Alcator C-Mod Run 1110127 Information

Miniproposals

Miniproposal: 587a

Date Filed: 11/25/2009

Title: The Parallel Structure and Dynamics of Blob/Filaments

First Author: Jim Terry

Session Leader: Jim Terry (shots 16-30)

Miniproposal: 635

Date Filed: 12/27/2010

Title: Effects of RF heating on the edge/SOL poloidal velocities

First Author: Istvan Cziegler

Session Leader: Istvan Cziegler (shots 1-15)

Operators
Session leader(s):	Istvan Cziegler,Jim Terry
Physics operator(s):	Robert Granetz,Steve Wukitch
Engineering operator(s):	Sam Pierson,Bill Parkin,Ed Fitzgerald

Engineering Operator Run Comment
MP#635 Effects of RF heating on the edge/SOL poloidal velocities

Session Leader Plans

Entered: Jan 26 2011 12:12:13:383PM

Author: Istvan Cziegler

1st 1/2 day

MP#635 Effects of RF heating on the edge/SOL poloidal velocities
SL: Cziegler
PO: Wukitch

Gas Setup:
fill NINJA plenum to 10 psi He

Plan:

USN RF L-modes -- start with 1100817016
I=0.8MA, but change B=5.4T (to compare best to ohmic 1091008 run)
USN, no cryopump necessary, I-mode not required
0.130s long He gas puff at AB limiter for GPI;
ICRF to scan from 1.0 MW input power to 3.5MW in 5 steps of 500kW

If effect is reproduced at low RF power (up to 1.2MW - single antenna):
ICRF power is increased during shot: 0 MW to 1.2MW, 0.2MW steps every 30ms;
repeat 3 times with all antennas separately (D, E and J);
repeat with a fine (0.1MW) power scan around critical values.

If the previously observed effects are not clear at low power:
increase power to the level where effect is developed
-- this should take 6 good shots;

outer gap is 0.7 mm for all shots first, repeat every shot with a 2cm gap
-- this should take 6 good shots extra,
for a total of 12 good shots in this half day.

Entered: Jan 27 2011 01:12:15:737PM

Author: Jim Terry

Run plan for 1110127 (2nd half of run)
SL: Jim Terry
PO: Steve Wukitch

applicable MP: 587a - this is a follow up to the 1100120 run

Prep:
Usual Overnight ECDC in D2
------------------------------
ECDC Parameters
------------------------------
gas and pressure: D2 at 2e-4 Torr
sweep: 44/45/103 cm
scan: 20/120 s

-- Working Gas Species: Deuterium
-- ICRF needed for ~2 shots, therefore keep on standby
-- Special gas puffing:
1psi Ar puff enabled, puff at 0.3s, 50ms in length
10psi He^4 NINJA puff enabled for GPI
-- A-Coils: Standard configuration

Desired Diagnostics and their setup:
1.) outboard midplane GPI (ADP array) - 2 MHz sample rate for 0.5 sec
2.) lower divertor flush-mounted probes at F port (digitized at 500 kHz)
3.) outboard midplane GPI (fast camera at 390 kfr/s digitized for 0.3 s)
4.) Edge TS
5.) ECE setup for 5.4 T

Run plan:

Toroidal Field: 3.6, 4.6, and 5.4 T see below
Plasma Currents: 0.63 to 1.05 MA see below
Working Gas Species: D2
Equilibrium configuration: LSN

Here is a concise version of the run plan:
load Shot 1100120023 - modify the Ip ramp slightly
Bt (T) Ip (MA) NL04(e19) # of shots
3.6 .79-.71 4 2
3.6 .79-.71 9 2
4.6 1.01-.91 5 2
3.6 .70-.63 3 2
3.6 .70-.63 8 2
5.4 .76-.67 5 4
5.4 .76-.67 5 4 with RF
5.4 1.03-.93 5 2

____________
We will examine the cross-correlation of outboard midplane
GPI (APD array) signals with lower divertor probes at F-port
with the mapping such that the fieldline connection
length between GPI and divertor probes is ~3 m. These
signals are correlated because the filaments/blobs
dominate the fluctuations and because the filaments are
field-aligned.

PART 1:
The plan is to establish the magnetic mapping such that
the cross-correlation between I_sat of divertor probe 9
and the GPI intensity fluctuations are maximum in or near the
center of the GPI view. After finding this mapping, then
scan density, followed by a 2nd setting for field &
current, while keeping q_95 the same (thus maintaining the
mapping).

In run 1100120 we showed that the desired magnetic mapping
occurred (shot 1100120023) when q_95 was 3.10 (Ip=0.783 MA,
Bt=3.6 T). (To see this, run
map_div_probes_to_midGPI,1100120023, 1.09,1.11,Bphi_mult=0.925)
Repeat these conditions to verify the good
cross-correlation.

Thus LOAD SHOT 1100120023, but with Ip programmed to peak
at 0.790 MA at 0.75 s and then ramp it down to 0.710 MA in
0.45 s (i.e. reaching 0.710 MA at 1.2 s).
Note NL04 for the target is 4e19 cm-2.
Some adjustment of the outer gap may be necessary.

Repeat shot with higher density (NL04=9e19 cm-2).
NOTE - it is important to keep the outer strike-point
the same as in shot 1100120023 for all of the following
Ip & Bt changes. 2 shots

Return to lower density (NL04=5e19 cm-2) but raise
Bt to 4.6 T and Ip to 1.01 MA at peak and 0.907 at
ramp end, keeping q const. 2 shots
____________
end of PART 1 - ~6 shots

PART 2
Now map div. probe 10 to the APD array view:
This occurs at a q_95 that is ~1.13 of the q for which
probe 9 has maximum cross-correlation. Thus
I expect that probe 10 maps for the Ip ramp
from 0.70 MA to 0.63 MA.
(to see this, run
map_div_probes_to_midGPI,1100120023, 1.09,1.11,Bphi_mult=1.13*.925
and note that this implies a nominal q of 3.1*1.13
or Ip=0.783/1.13 at 3.6 T.

Take 2 shots at Bt=3.6 T with an Ip ramp from 0.70 MA at 0.75 s
to 0.63 MA at 1.2 s - NL04~3xe19 cm-2
If good cross-cor is seen, then repeat at higher density,
NL04~8e19 cm-2
____________
end of PART 2 - ~4 shots

PART 3
Now map div. probe 8 to the APD array view:
This cannot be done in one half of a toriodal
circuit at an accessible q. A mapping occurs after
1.5 circuits at a q_95 that is 1.70 of the q for which
probe 9 has maximum cross-correlation. Thus
I expect that probe 8 maps at 5.4 T for the Ip ramp
from 0.76 MA to 0.67 MA.
(to see this, run
map_div_probes_to_midGPI,1100120023, 1.09,1.11,Bphi_mult=1.70*0.925
and note that this implies a nominal q of 3.1*1.70
or Ip=0.783/1.58 at 3.6 T or Ip=0.783/1.58*(5.4/3.6)=
0.740 MA at 5.4 T

Take 2 shots at Bt=5.40 T with an Ip ramp from 0.76 MA at 0.75 s
to 0.67 MA at 1.2 s - NL04~4xe19 cm-2
If good cross-cor is seen, then repeat at higher density,
NL04~8e19 cm-2.
If good cross-cor is seen, then repeat adding 2.5 MW of
ICRF in order to produce an EDA H-mode.
See if this perturbs the mapping as implied by Linda Sugiyama's
Ideas Form presentation.
____________
end of PART 3 - ~8 shots

PART 4 (if time allows)
If good cross-cor is seen with probe 8, then attempt to map
probe 7 after 1.5 toroidal circuits. This is predicted to occur at

(to see this,
run map_div_probes_to_midGPI,1100120023, 1.09,1.11,Bphi_mult=1.20)
and note that this implies a nominal q of 3.1*1.20
or Ip=0.783/1.20 at 3.6 T or Ip=0.783/1.20*(5.4/3.6)=
0.98 MA at 5.4 T)

Thus take 2 shots at Bt=5.40 T with an Ip ramp from 1.03 MA at 0.75 s
to 0.93 MA at 1.2 s - NL04~5xe19 cm-2

Code that are needed:
.r /home/terry/kn1d/map_div_probes_to_midGPI.pro
map_div_probes_to_midGPI,shot_num, start_time, stop_time
and
.r /home/terry/kn1d/show_fieldlines_from_div_to_GPI.pro
show_fieldlines_from_div_to_GPI,shot_num,time

To analyze the cross-correlation between a give divertor probe
and the APD signals, use
/home/terry/gpi/APDs/correlate_apd2probe.pro
correlate_apd2probe,1100120014,t_in=0.73,t_out=1.195,probe=3,/plotit
or
correlate_apd2probe,1100120014,t_in=0.73,t_out=1.195,probe=3,/png
where the probe # is
1 EDGE::top.probes.fmp.osd_10.p0:I_Slow
2 EDGE::top.probes.fmp.osd_10.p2:V_Slow
3 EDGE::top.probes.fmp.osd_09.p0:I_Slow
4 EDGE::top.probes.fmp.osd_09.p2:V_Slow
5 EDGE::top.probes.fmp.osd_08.p0:I_Slow
6 EDGE::top.probes.fmp.osd_08.p2:V_Slow
7 EDGE::top.probes.fmp.osd_07.p0:I_Slow
8 EDGE::top.probes.fmp.osd_07.p2:V_Slow
9 EDGE::top.probes.fmp.osd_06.p0:I_Slow
10 EDGE::top.probes.fmp.osd_06.p2:V_Slow

Physics Operators Plans

Entered: Jan 26 2011 04:26:48:807PM

Author: Steve Wukitch

Session Leader: Istvan Cziegler (1st half)/Jim Terry (2nd half)
Physics Operator: Steve Wukitch
MP635: Effects of RF heating on the edge/SOL poloidal velocities
MP587a: The Parallel Structure and Dynamics of Blob/Filaments

-----------------
Engineering Setup
-----------------

Run begins at 09:00 and ends at 14:00

Power systems as on: 1100817016

Acoil: +Dtop -Dbot -Jtop +Jbot (standard) Hybrid Enabled

Gas setup:

Fill B-Top with 6 psi D2 Hybrid enabled (PG4)
fill B-side lower with 1 psi Ar Hybrid DISABLED (PG1)
leave B-side upper as is Hybrid DISABLED (PG2)
fill B-main (C-side) with 40 psi D2 Hybrid enabled (PG3)
fill NINJA with 10 psi D2 DISABLED

Enable gate-valves and shutters: ECE, VUV, HiREX Sr, Xeus
Leave z-bolo shutter as is (should be open)

Torvac gatevalve toggle (yes/no): no

Boronization(yes/no): no
Overnight ECDC (yes/no): yes
ICRF(yes/no): yes
LH(yes/no): no
Cryopump (yes/no): no
DNB (yes/no): no

Vessel temperature: 50/50/50

------------------------------
ECDC Parameters (if requested)
------------------------------
gas and pressure: D2 at 2e-4 Torr
sweep: 44/45/103 cm
scan: 20/120 s

PO Plan

1) Start with USN discharges based on 1100817016 with BT set to 5.4 T;
account for no cryopump on startup by shortening the prepuff to 25
ms from 55 ms.

2) For second half, load LSN discharge based on 1100120023

Session Leader Summaries

Entered: Jan 30 2011 09:03:27:410PM

Author: Istvan Cziegler

This half run day was dedicated to MP#635
"Effects of RF heating on the edge/SOL poloidal velocities"

In this half day which constituted the first half of the MP
we wanted to reproduce all of the previously observed RF-heating
phenomena in the SOL and tie these phenomena to specific
operating parameters before we could perform a systematic
scan of major plasma parameters - like Ip, Bt and ne.

The run was very successful. We produced 14 good shots, and tested
all RF antenna-combinations at all the relevant heating powers.

The strong negative radial electric field developing in the far
SOL, near or right in front ofthe antennas was observed with all
individual antennas (E,D and J).

The critical heating power at which this phenomenon becomes
clearly discernible by GPI is around 600kW for all antennas in the
most typical 5.4T, 0.8MA, nl04=0.8-0.9e20m^-2 plasmas.
This treshold will be investigated in the second half of the MP.

The radial profile of this electric field is different for each
antenna. Whether this is depends on how well the region in front of
the antenna is connected magnetically to the A-B limiter, where
GPI measurements are made, will be addressed in the second half of
MP#635.

The previously rarely observed flow striation (EDD-IDD-EDD-IDD from
the wall towards the core) was produced most clearly with antennas
D+J at a minimum power of 800kW. A similar effect is seen with E+J
and another, weaker phenomenon with only J producing the same amount
of power.

The size of the OUTER GAP seems to have a strong effect on the above
striation pattern, which I provisionally attributed to the strong
positive radial electric field in the near SOL region, previously
measured by scanning probes.

Entered: Feb 9 2011 05:21:24:023PM

Author: Jim Terry

Summary for the 2nd half of run 1110127.

This was a continuation of MP 587a, where
we are investigating the parallel structure and
dynamics of the SOL filaments.

We were successful in finding good cross-correlations
between divertor probe (I_sat) signals and
the intensity fluctuations in the 2D outboard
midplane GPI view. The good cross-correlations
were established for divertor probe 9 (X-corr ~ 0.6)
and probe 10 (X-corr~0.75). The EFIT mapped-to-miplane
rhos for these probes were typically 10 mm outside
the rho of the array location where the maximum in the
cross-correlation. Also the mapping in Z was not as
predicted by EFIT; a reduction of Bt by 0.95 (or an
increase of Bp by 1.05 gives the best mapping of EFIT
to the location of the max correlation. These are
cross-correlations using filaments connected by fieldlines
mapping through ~0.5 toroidal turn.

We were not able to find a good cross-correlation between
probe 8 and the midplane after 1.5 toroidal turns.)

Divertor probe 8 maps to a midplane rho of ~ 5 mm
Divertor probe 9 maps to a midplane rho of ~ 9 mm
Divertor probe 10 maps to a midplane rho of ~11 mm

Delay times (between probe and miplane) were shorter at
higher field and current by ~5 usec.

Shot 030 has an Ohmic H-mode from 0.75-0.898 s with small ELM
bursts starting at 0.826 s. The ELMs have a growing 200 kHz
precursor oscillation. There is also a good QCM mode during
that time; it has a 13 km/s EDD poloidal velocity!

The detailed shot summary is:
[shot] [Ip range for good X-corr] [Bt] [gap] [X-corr] [Bt mult. assuming field-aligned] [delta R]
016 0.788-0.76 3.6 0.55 1.4 0.953 +8mm probe 9
017 0.791-0.757 3.6 0.55 1.15 0.97 +9mm probe 9
018 0.790-0.758 3.6 0.55 0.9 0.96 +8mm probe 9
019 1.013-0.99 4.63 0.50 0.9 0.949 +10mm probe 9
020 1.02-0.986 4.63 0.50 0.85 0.947 +10mm probe 9
021 0.703-0.680 3.6 0.60 0.9 0.958 +8-10mm probe 10
022 no mapping to probe 10 over Ip range 0.655-0.555 MA
023 disrupted before puff
024 0.730-0.720 3.6 0.75 1.7-1.3 0.958 +10-12mm probe 10
025 0.730-0.685 3.6 0.67 1.2 0.958 +10 mm probe 10
026 0.725-0.678 3.6 0.62 0.9 0.958 +10 mm probe 10
027 no mapping to probe 8 over Ip range 0.784-0.691 MA, Bt=5.45 T (gap=0.5)
it should have occurred at 1.01-1.05 s (Ip=0.73-0.718)
028 no mapping to probe 8 over Ip range 0.780-0.690 MA (gap=0.9)
029 0.714-0.678 3.6 0.70 1.25-1.4 0.955 +10 mm probe 10 higher ne than 024
030 0.715-0.690 3.6 0.70 0.6-1 0.941 +10 mm probe 10

Note that delta R is the difference in major radius for where the
EFIT mapping shows the probe's field line maps onto the array
MINUS the radius of max. correlation, i.e EFIT predicts the probe
maps to a larger rho than observed via the max cross-correlation.
At face value that means that the filament at the diverter is
radially outboard of the fieldline it is on at the midplane.

For this run we had Josh's/Bill Burke's CPCI timing system working.
To automatically put the timing-system-derived timebases in the tree
and tie them to the appropriate digitizers, we added special nodes in the
EDGE and SPECTROSCOPY trees under the appropriate digitizer nodes.

for the APD digitizers the corrected timebases are stored in the nodes
SPECTROSCOPY::TOP.GPI.APD_ARRAY.HARDWARE:DT132_1:T_SIG_BASE
SPECTROSCOPY::TOP.GPI.APD_ARRAY.HARDWARE:DT132_2:T_SIG_BASE
SPECTROSCOPY::TOP.GPI.APD_ARRAY.HARDWARE:DT132_3:T_SIG_BASE

The F-port divertor probe signals are stored using digitizer
EDGE::TOP.PROBES.CPCI_FPORT:DT196_01
for this run this digitizer did NOT have the timing signal. Rather
digitizer EDGE::TOP.PROBES.CPCI_FPORT:DT196_02 had the timing signal.
On run 1110131 Brian proved to himself that DT196_01 and DT196_02
had the same timebase. Thus the timebase for the signals read by
DT196_01 should be read by getting the corrected timebase
for DT196_02, i.e. node
EDGE::TOP.PROBES.CPCI_FPORT:DT196_02:T_SIG_BASE

This has been corrected for future runs, in which case each digitizer will have
its own corrected timebase. Also in the future, if timing signal is not present
for some reason, then this corrected-timebase-node
EDGE::TOP.PROBES.CPCI_FPORT:DT196_01:T_SIG_BASE
will default to the internal timebase on the digitizer and the node
EDGE::TOP.PROBES.CPCI_FPORT:DT196_01:T_SIG_SOURCE
will be set to 0. If the node is using the timing signal, then
EDGE::TOP.PROBES.CPCI_FPORT:DT196_01:T_SIG_SOURCE
will be set to 1.

Physics Operator Summaries

Entered: Jan 27 2011 05:07:12:100PM

Author: Steve Wukitch

We had an hour delay due to the snow storm. We started with MP635 to
investigate impact of ICRF power and antenna mapping to the GPI view
on the measured poloidal velocities. There was some vertical
instability for discharges with ~1.8 cm outer gap addressed by
lowering ZXU. We verified earlier observations and were able to scan
power, active antennas, and right gap. We moved to MP587a and
were able to switch without significant problems. We had a rough
stretch with disruptions in 23 and 24 that was addressed by raising
density. Otherwise it was much tweaking of gaps, density, currents and
magnetic fields.

Score Card

plasmas: 30
disruptions: 4
early disruptions (<0.5 s):
fizzles:
runaway shutdown: 1

Session Leader Comments

Jan 27 2011 10:16:57:700AM 1110127001 Istvan Cziegler Ip=0.8MA
Bt=5.4T
nl04=1e20m^-2
OUTER_GAP=2cm
shot disrupted at t=1.4s
He puff hits at t=1.1s
(starting puff 0.1s earllier on the next one)
Signals are good on all APD's, no saturation.
RF was lower than expected, repeat to get the required values.
EDD propagation in the far SOL is seen for
P_ICRF=1.0MW
already.
First column (farthest into SOL) has a fast IDD feature. Behind antenna?
Nominal R_major=91.1cm
Antenna R_major=91.3cm

Jan 27 2011 10:42:08:577AM 1110127002 Istvan Cziegler Full length shot.
nl04=0.95e20m^-2
OUTER_GAP=1.8cm
He puff hits at t=1.03s
(starting puff 0.02s earllier on the next one)
Signals are good on all APD's, no saturation.
RF OK, some trips at the highest power.
EDD propagation in the far SOL is seen for
P_ICRF=1.0MW
already.
First column (farthest into SOL) has a fast IDD feature.
Starting at
v=2.3km/s (IDD)
second column starting at
v=2.5km/s (EDD)
which would indicate the same potential drop scale length
(if it's the two faces of the antenna)

P_ICRF=2.5MW
1st col - EDD
2nd col - IDD
3rd col - EDD

Jan 27 2011 10:36:22:103AM 1110127003 Istvan Cziegler Disrupted at t=0.76s
No light on APD's.

Jan 27 2011 11:12:30:313AM 1110127004 Istvan Cziegler Full length shot.
nl04=1.2e20m^-2 (during RF)
OUTER_GAP=1.1cm
He puff hits before 1.0s (move it a tad later)
Signals are good on all APD's, no saturation.

P=1MW
col1 - v=-1.15km/s
col2 - v=2.1km/s
then more or less regular L-mode

P=1.7MW
col1 - v=-1.14km/s
col2 - v=1.9km/s
then reg L-mode

no power shows the EDD-IDD-EDD effect with a small gap!

The velocity of the EDD feature in the edge depends on RF.

Starting single antenna experiments.

Jan 27 2011 11:32:54:520AM 1110127005 Istvan Cziegler Full length shot.
RF: 0-1.2MW from D
nl04=0.85e20m^-2 (during RF)
OUTER_GAP=0.8-1.0cm
He puff hits at 1.0s (perfect)
Signals are good on all APD's, no saturation.

P=0.2MW
col1 - v=-940m/s
col2 - v=-1060m/s -- and v=1340m/s in EDD (weak)
then reg L-mode

P=0.4MW
col1 - v=-980m/s
col2 - v=-1200m/s -- and v=1500m/s in EDD (weak)
then reg L-mode

P=0.6MW
col1 - dominantly EDD: v=3.1km/s
rest reg L-mode

The effect gets stronger from here.

Next shot: repeat with a 2cm gap.

Jan 27 2011 11:40:47:250AM 1110127006 Istvan Cziegler Full length shot.
RF: 0-1.2MW from D
nl04=0.85e20m^-2 (during RF)
OUTER_GAP=1.8-2.0cm
He puff hits at 1.03s (bring it 30ms earlier)
Signals are good on all APD's, no saturation.

In previous ones the EDD propagation becomes dominant at:
P=0.6MW
col1 - strong EDD: v=6.9km/s
decays within 3 channels (~1.1cm)
rest reg L-mode

Next shot: repeat with the same power from E,
but ramp RF down at 1.35s to reduce MARFE

Jan 27 2011 11:55:19:940AM 1110127007 Istvan Cziegler Full length shot.
RF: 0-1.2MW from
nl04=0.83e20m^-2 (during RF)
OUTER_GAP=1.8-2.0cm
He puff hits at 0.97s (bring it 30ms earlier)
Signals are good on all APD's, no saturation.

In previous ones the EDD propagation becomes dominant at:
P=0.6MW
col1 - strong EDD: v=2.8km/s
decays within 2 channels (~.8cm)
rest reg L-mode

Next shot: repeat with small outer gap

Jan 27 2011 12:07:41:150PM 1110127008 Istvan Cziegler Full length shot.
RF: 0-1.2MW from
nl04=0.77e20m^-2 (during RF)
OUTER_GAP=1.0cm
He puff hits at 0.97s
Signals are good on all APD's, no saturation.

In previous ones the EDD propagation becomes dominant at:
P=0.6MW
col1 - very weak EDD: v=1.3km/s
col2 - weak but stronger EDD, same velocity
rest L-mode except for fast IDD feature close to LCFS

Next shot: repeat with J (both sides, so double the power)

Jan 27 2011 12:19:41:387PM 1110127009 Istvan Cziegler Early shutdown.
No data.

Jan 27 2011 12:49:19:223PM 1110127010 Istvan Cziegler Full length shot.
RF: 0-2.2MW from J
nl04=0.9-1.0e20m^-2 (during RF)
OUTER_GAP=0.9cm
He puff hits at 0.97s
Signals are good on all APD's, no saturation.

In previous ones the EDD propagation becomes dominant at:
P=0.6MW
so at P=0.8MW:
col1 - weak EDD: v=1.7km/s, IDD: v=-1.4km/s
col2 - dominant EDD (large v spread) v=3.0km/s
rest L-mode except for fast IDD feature close to LCFS

P=2.2MW
col1 both EDD (v=2.6km/s) and IDD (v=-2.1km/s) present
col2 EDD dominant (v=3.km/s)

Next shot: repeat with 2cm outer gap

Jan 27 2011 12:48:47:090PM 1110127011 Istvan Cziegler Full length shot.
RF: 0-2.2MW from J
nl04=0.85-0.98e20m^-2 (during RF)
OUTER_GAP=1.8-2.0cm
He puff hits at 0.97s
Signals are good on all APD's, no saturation.

In previous ones the EDD propagation becomes dominant at P=0.6MW
so at P=1.2MW (higher than that limit)
col1-2 strong, fast IDD
col3 EDD (!!)
switches back in ~2channels

but this is reproduced even with 0.4MW of power.

The OUTER GAP is key! Is this due to positive E_r just outside
the LCFS due to temperature gradient?

Next shot: repeat with E+D providing the power instead of J

Jan 27 2011 01:04:59:727PM 1110127012 Istvan Cziegler Full length shot.
RF: 0-2.2MW from D+E
nl04=0.77-1.0e20m^-2 (during RF)
OUTER_GAP=1.8-2.0cm
He puff hits at 0.97s
Signals are good on all APD's, no saturation.

In previous ones the EDD propagation becomes dominant at P=0.6MW
so at 0.8MW (higher than that limit)
col1 - strong, fast (v=6.0km/s) EDD feature
decays in 2 channels (~8mm)
rest is L-mode

at max power
col1 strong, extra sharp EDD (v=7.7km/s)
the same radial profile as with 400kW

Next shot: repeat with small gap

Jan 27 2011 01:16:29:010PM 1110127013 Istvan Cziegler Full length shot.
RF: 0-2.2MW from D+E
nl04=0.7-1.0e20m^-2 (during RF)
OUTER_GAP=0.9cm
He puff hits at 0.97s
Signals are good on all APD's, no saturation.

In previous ones the EDD propagation becomes dominant at P=0.6MW
so at 0.8MW (higher than that limit)
col1 - VERY weak EDD (v=1.5km/s)
falls off within ~8mm
the rest is L-mode with a fast IDD feature at LCFS
(this structure is unaffected by power)

Next shot: repeat with large gap and power provided by D+J (1-to-1)

Jan 27 2011 01:30:46:590PM 1110127014 Istvan Cziegler Full length shot.
RF: 0-2.4MW from D+J
nl04=0.7-1.0e20m^-2 (during RF)
OUTER_GAP=2.0cm
He puff hits at 0.97s
Signals are good on all APD's, no saturation.

In previous ones the EDD propagation becomes dominant at P=0.6MW
so at 0.9MW (higher than that limit)
col1 - strong, sharp EDD (v=3.4km/s)
col2 - strong, sharp, fast IDD (v=-3.3km/s)
col3 - switch over
col4 - strong, sharp EDD (v=4.2km/s)
decays over 4 columns (~1.5cm)

Next shot: repeat with power provided by E+J (1-to-1)

Jan 27 2011 01:46:48:423PM 1110127015 Istvan Cziegler Full length shot.
RF: 0-2.4MW from E+J
nl04=0.7-1.0e20m^-2 (during RF)
OUTER_GAP=1.9-2.0cm
He puff hits at 0.97s
Signals are good on all APD's, no saturation.

In previous ones the EDD propagation becomes dominant at P=0.6MW
so at 0.85MW (higher than that limit)
col1 - strong, sharp IDD (v=-2.5km/s) (weak EDD at v=5.5km/s)
col2 - strong, sharp IDD (v=-3.km/s)
col3 - switch over
col4 - strong, sharp EDD (v=4.2km/s)
decays over 4 columns (~1.5cm)

Thank you all for the successful half-run!

Jan 28 2011 10:48:16:423AM 1110127016 Jim Terry Set up for magnetic mapping of filaments between outboard
midplane GPI and divertor probe 9. This should occur
at Bt=3.6 T, Ip=0.780 MA.

Outer gap is 1.4 cm

NINJA puus at 0.63 s and 0.88 s
Phantom timing start at 0.95 s
APD timings set to 0.75 to 1.20 s

Good shot - just as programmed

good max correlation moves off of array at 0.95 s

max cor=0.51 at t=0.838 with R,Z=88.39,-3.00

repeat but with smaller outer gap (-> 0.8 cm) and
smaller ramp rate (Ip at 0.75 MA at 1.2 s).

Jan 28 2011 10:52:59:703AM 1110127017 Jim Terry Set up for magnetic mapping of filaments between outboard
midplane GPI and divertor probe 9. This should occur
at Bt=3.6 T, Ip=0.780 MA.

Outer gap is 1.1 cm

NINJA puus at 0.63 s and 0.88 s
Phantom timing start at 0.95 s
APD timings set to 0.75 to 1.20 s
great shot - just as programmed Ip ramped from 0.79 to 0.74 MA

good max correlation moves thru array and then off of array at 1.08 s

max cor=0.60 at t=0.831 found at R,Z=88.77,-2.64

repeat but with smaller outer gap (-> 0.8 cm), same ramp

Jan 28 2011 11:02:40:590AM 1110127018 Jim Terry Set up for magnetic mapping of filaments between outboard
midplane GPI and divertor probe 9. This should occur
at Bt=3.6 T, Ip=0.780 MA.

Outer gap is now 0.9 cm

NINJA puus at 0.63 s and 0.88 s
Phantom timing start at 0.95 s
APD timings set to 0.75 to 1.20 s
great shot - just as programmed Ip ramped from 0.79 to 0.74 MA

good max correlation moves thru array and then off of array at 1.08 s

max cor=0.58 at t=0.838 with R,Z=89.53,-2.24

Next shot: increase Ip and Bt (to 4.6 T) at const q

Jan 28 2011 11:08:02:813AM 1110127019 Jim Terry Set up for magnetic mapping of filaments between outboard
midplane GPI and divertor probe 9. This should occur
at Bt=4.63 T, Ip=0.990 MA.

Outer gap is now 0.9 cm

NINJA puus at 0.63 s and 0.88 s
Phantom timing start at 0.95 s
APD timings set to 0.75 to 1.20 s
great shot - just as programmed Ip ramped from 1.02 to 0.95 MA

good max correlation moves thru array, disturbed by injection at 0.95 s

max cor=0.55 at t=0.825 with R,Z=89.15,-3.00
max cor=0.55 at t=0.831 with R,Z=89.15,-2.61
max cor=0.54 at t=0.838 with R,Z=89.15,-3.00

Next shot: slightly higher Ip

Jan 28 2011 11:20:15:840AM 1110127020 Jim Terry Set up for magnetic mapping of filaments between outboard
midplane GPI and divertor probe 9. This should occur
at Bt=4.63 T, Ip=0.990 MA.

Outer gap is 0.9 cm

NINJA puus at 0.63 s and 0.88 s
Phantom timing start at 0.95 s
APD timings set to 0.75 to 1.20 s
good shot - Ip ramped from 1.02 to 0.97 MA
no obvious change in the mapping at these higher fields and currents.

good max correlation moves thru array and then off of array at 1.06 s

max cor=0.49 at t=0.953 with R,Z=89.15,-4.14
max cor=0.55 at t=0.959 with R,Z=89.15,-4.14
max cor=0.41 at t=0.966 with R,Z=89.15,-4.14
max cor=0.53 at t=0.980 with R,Z=89.15,-4.14
max cor=0.62 at t=0.982 with R,Z=89.15,-4.14

Next shot: try to map probe 10, which means going back to 3.6 T
and an Ip ramp from 0.70 to 0.63 MA

Jan 28 2011 01:47:08:410PM 1110127021 Jim Terry Set up for magnetic mapping of filaments between outboard
midplane GPI and divertor probe 10. This should occur
at Bt=3.6 T, Ip=0.680 MA.

Outer gap is 0.9 cm

NINJA puus at 0.63 s and 0.88 s
Phantom timing start at 0.95 s
APD timings set to 0.75 to 1.20 s
good shot, but mapping is not right - Ip ramped from 0.70 to 0.63 MA

max correlation is < 0.2

max cor=0.53 at t=0.786 with R,Z=89.92,-3.00
max cor=0.62 at t=0.792 with R,Z=89.92,-3.00
max cor=0.52 at t=0.799 with R,Z=89.53,-3.38
max cor=0.54 at t=0.805 with R,Z=89.53,-3.38
max cor=0.51 at t=0.812 with R,Z=89.53,-3.00
max cor=0.62 at t=0.818 with R,Z=89.53,-3.38
max cor=0.59 at t=0.825 with R,Z=89.53,-3.76
max cor=0.66 at t=0.831 with R,Z=89.53,-3.76
max cor=0.63 at t=0.838 with R,Z=89.53,-3.76

Next shot: reduce Ip ramp from 0.65 to 0.55 MA

Jan 28 2011 01:49:16:217PM 1110127022 Jim Terry Set up for magnetic mapping of filaments between outboard
midplane GPI and divertor probe 10. This should occur
at Bt=3.6 T, Ip=0.680 MA.

Outer gap is 0.9 cm

NINJA puffs at 0.63 s and 0.88 s
Phantom timing start at 0.95 s
APD timings set to 0.75 to 1.20 s
good shot, but mapping is not right - Ip ramped from 0.66 to 0.55 MA

max correlation is < 0.3

Next shot: increase gap to 1.3 cm, and go
back to nominal mapping-Ip-ramp from 0.66 to 0.56 MA

Jan 28 2011 01:58:50:103PM 1110127024 Jim Terry Set up for magnetic mapping of filaments between outboard
midplane GPI and divertor probe 10. This should occur
at Bt=3.6 T, Ip=0.680 MA.

Outer gap is 1.4 cm

NINJA puffs at 0.63 s and 0.88 s
Phantom timing start at 0.95 s
APD timings set to 0.75 to 1.20 s
disrupting shot - maps to top of array - Ip ramped from 0.73 to 0.72 MA
before it disrupts

max correlation is >0.7

max cor=0.68 at t=0.759 with R,Z=88.77,-1.11
max cor=0.69 at t=0.766 with R,Z=88.77,-1.11
max cor=0.73 at t=0.772 with R,Z=88.77,-1.11
max cor=0.74 at t=0.779 with R,Z=88.77,-1.11
max cor=0.72 at t=0.785 with R,Z=88.77,-1.11
max cor=0.76 at t=0.790 with R,Z=89.15,-1.08
max cor=0.81 at t=0.796 with R,Z=88.76,-1.89
max cor=0.73 at t=0.801 with R,Z=88.76,-1.89
max cor=0.81 at t=0.807 with R,Z=88.76,-1.89

Next shot: Ip-ramp from 0.76 to 0.66 MA

Jan 28 2011 02:15:35:953PM 1110127025 Jim Terry Set up for magnetic mapping of filaments between outboard
midplane GPI and divertor probe 10. This should occur
at Bt=3.6 T, Ip=0.680 MA.

Outer gap is 1.13 cm

NINJA puffs at 0.602 s and 0.88 s
Phantom timing start at 0.95 s
APD timings set to 0.75 to 1.20 s
good shot - great mapping - Ip ramped from 0.73 to 0.63 MA

max correlation is >0.6

max cor=0.69 at t=0.917 with R,Z=88.77,-2.27
max cor=0.69 at t=0.923 with R,Z=88.77,-2.27
max cor=0.68 at t=0.930 with R,Z=88.77,-2.27
max cor=0.63 at t=0.936 with R,Z=88.76,-1.89
max cor=0.68 at t=0.943 with R,Z=88.77,-2.64
max cor=0.72 at t=0.948 with R,Z=88.77,-2.27
max cor=0.74 at t=0.953 with R,Z=88.77,-2.27
max cor=0.70 at t=0.958 with R,Z=88.77,-2.64

Next shot: reduce gap to 0.8

Jan 28 2011 02:24:38:407PM 1110127026 Jim Terry Set up for magnetic mapping of filaments between outboard
midplane GPI and divertor probe 10. This should occur
at Bt=3.6 T, Ip=0.680 MA.

Outer gap is 0.8 cm

NINJA puffs at 0.602 s and 0.88 s
Phantom timing start at 0.95 s
APD timings set to 0.75 to 1.20 s
good shot - great mapping - Ip ramped from 0.73 to 0.63 MA
max cor moves down the array, off around 1.0 s
It has movesd in as well because of the smaller gap.

max correlation is >0.6

max cor=0.61 at t=0.838 with R,Z=89.53,-1.08
max cor=0.66 at t=0.845 with R,Z=89.53,-1.08
max cor=0.62 at t=0.851 with R,Z=89.53,-1.08
max cor=0.64 at t=0.858 with R,Z=89.53,-1.47
max cor=0.60 at t=0.864 with R,Z=89.53,-1.47
max cor=0.62 at t=0.871 with R,Z=89.92,-1.08
max cor=0.68 at t=0.877 with R,Z=89.53,-1.47
max cor=0.66 at t=0.881 with R,Z=89.53,-1.47

Next shot: try to map probe 8 with 1.5 circuits, i.e Bt=5.4 T
and Ip from 0.77 to 0.67 MA

Jan 27 2011 04:36:07:850PM 1110127027 Jim Terry Set up for magnetic mapping of filaments between outboard
midplane GPI and divertor probe 8. This should occur
at Bt=5.4 T, Ip=0.740 MA.

Outer gap is 0.8 cm

NINJA puffs at 0.602 s and 0.88 s
Phantom timing start at 0.95 s
APD timings set to 0.75 to 1.20 s
good shot - no correlation > 0.2

Next shot: increase the gap to 1.4 cm

Jan 27 2011 04:46:43:510PM 1110127028 Jim Terry Set up for magnetic mapping of filaments between outboard
midplane GPI and divertor probe 8. This should occur
at Bt=5.4 T, Ip=0.740 MA.

Outer gap is 0.8 cm

NINJA puffs at 0.602 s and 0.88 s
Phantom timing start at 0.95 s
APD timings set to 0.75 to 1.20 s
good shot - no correlation > 0.2

Next shot: reload shot 25 which had good correlation with
probe 10, but raise the density with a ramp from
NL04=0.6 to 1e20

Jun 8 2011 02:09:59:897PM 1110127029 Jim Terry Set up for magnetic mapping of filaments between outboard
midplane GPI and divertor probe 10. This should occur
at Bt=3.6 T, Ip=0.705 MA.

Outer gap is ~1.3 cm - changing

NINJA puffs at 0.602 s and 0.88 s
Phantom timing start at 0.95 s
APD timings set to 0.75 to 1.20 s
good shot - good max correlations during Ip ramp
Note increase in max correlation from t=0.75 to 0.86 s

max cor=0.75 at t=0.949 with R,Z=88.77,-2.64
max cor=0.76 at t=0.951 with R,Z=88.77,-2.64
max cor=0.74 at t=0.953 with R,Z=88.77,-2.64
max cor=0.72 at t=0.955 with R,Z=88.77,-2.64
max cor=0.72 at t=0.957 with R,Z=88.77,-2.64
max cor=0.64 at t=0.959 with R,Z=88.77,-2.64
max cor=0.72 at t=0.961 with R,Z=88.77,-2.64
max cor=0.83 at t=0.964 with R,Z=88.77,-2.64
max cor=0.78 at t=0.966 with R,Z=88.77,-2.64
max cor=0.75 at t=0.968 with R,Z=88.77,-2.64
max cor=0.80 at t=0.970 with R,Z=88.77,-2.64
max cor=0.73 at t=0.972 with R,Z=88.77,-3.03
max cor=0.74 at t=0.974 with R,Z=88.77,-3.03
max cor=0.81 at t=0.976 with R,Z=88.77,-3.03
max cor=0.81 at t=0.980 with R,Z=88.77,-3.03
max cor=0.76 at t=0.982 with R,Z=88.77,-3.03
max cor=0.80 at t=0.984 with R,Z=88.77,-2.64
max cor=0.73 at t=0.986 with R,Z=88.77,-3.03
max cor=0.73 at t=0.988 with R,Z=88.77,-3.03
max cor=0.79 at t=0.990 with R,Z=88.77,-3.03
max cor=0.76 at t=0.992 with R,Z=88.77,-3.41
max cor=0.76 at t=0.994 with R,Z=88.77,-3.41
max cor=0.77 at t=0.996 with R,Z=88.77,-3.41
max cor=0.75 at t=0.998 with R,Z=88.77,-3.41
max cor=0.68 at t=1.000 with R,Z=88.77,-3.03
max cor=0.71 at t=1.002 with R,Z=88.39,-3.38
max cor=0.72 at t=1.005 with R,Z=88.77,-3.41
max cor=0.77 at t=1.007 with R,Z=88.77,-3.78

Next shot: keep the density ramp but hold the current
constant so that the max correlation is in the middle of
the array

Jun 8 2011 03:33:42:360PM 1110127030 Jim Terry Set up for magnetic mapping of filaments between outboard
midplane GPI and divertor probe 10. This should occur
at Bt=3.6 T, Ip=0.705 MA.

Outer gap is ~1.3 cm - changing

NINJA puffs at 0.602 s and 0.88 s
Phantom timing start at 0.95 s
APD timings set to 0.75 to 1.20 s
good shot, but short Ohmic H-mode at 0.75-1.06
- good max correlations during Ip flattop

There is an Ohmic H-mode from 0.75-0.898 s
with small ELM bursts starting at 0.826 s. The
ELMs have a growing 200 kHz precursor oscillation.

There is also a good QCM mode during that time that
has a 13 km/s EDD poloidal velocity!
See entry under TOPIC GPI.

No EFIT mapping between 0.78 and 0.9, i.e. the H mode time, yet
there is still good mcax correlation (0.5-0.7)

max correlations ~0.6

max cor=0.60 at t=0.759 with R,Z=89.92,-1.47
max cor=0.69 at t=0.766 with R,Z=89.53,-1.08
max cor=0.66 at t=0.772 with R,Z=89.53,-1.08
max cor=0.57 at t=0.779 with R,Z=89.53,-1.08
max cor=0.55 at t=0.786 with R,Z=89.53,-1.08
max cor=0.52 at t=0.792 with R,Z=90.30,-1.08
max cor=0.51 at t=0.799 with R,Z=89.53,-1.08
max cor=0.35 at t=0.805 with R,Z=89.53,-1.08
max cor=0.50 at t=0.812 with R,Z=89.53,-1.08
max cor=0.52 at t=0.818 with R,Z=89.92,-1.08
max cor=0.63 at t=0.825 with R,Z=90.30,-1.08
max cor=0.52 at t=0.831 with R,Z=89.92,-1.08
max cor=0.60 at t=0.838 with R,Z=90.30,-1.08
max cor=0.67 at t=0.845 with R,Z=89.92,-1.08
max cor=0.68 at t=0.851 with R,Z=89.92,-1.08
max cor=0.59 at t=0.858 with R,Z=90.30,-1.08
max cor=0.60 at t=0.864 with R,Z=90.30,-1.08
max cor=0.66 at t=0.871 with R,Z=90.30,-1.08
max cor=0.49 at t=0.877 with R,Z=89.92,-1.08
max cor=0.68 at t=0.882 with R,Z=89.92,-1.08
max cor=0.54 at t=0.886 with R,Z=90.30,-1.08
max cor=0.57 at t=0.890 with R,Z=91.08,-1.08
max cor=0.62 at t=0.894 with R,Z=89.92,-1.08
max cor=0.66 at t=0.898 with R,Z=91.08,-1.08

Max correlation does not change much across the
H-to-L transition

Physics Operator Comments

Jan 27 2011 09:11:58:680AM Robert Granetz

Snowstorm last night/this morning. Start of run is delayed until 10:00. Granetz filling in as physics operator until Steve Wukitch can get in, probably around 10:30. I've loaded Steve's shot that he setup last evening: /home/wukitch/pcs_scratch/pcs_1110127000. Seg 1 is from yesterday, and has been adjusted to account for lack of cryopump today. Seg 2 is for Istvan's morning run. Seg 3 is for Jim Terry's afternoon run.

Jan 27 2011 09:43:24:940AM Robert Granetz

Steve Wukitch just made it in, so he will takeover now as physop. We still have 15 minutes before the run starts.

Jan 27 2011 10:20:11:650AM 1110127001 Steve Wukitch load from 1110126028 for seg1 startup with adjustment for no
cryopump (25 ms); seg#2 from 1100817016 for USN right gap near 2 cm

result: plasma, disruption ~1.4 s, vertical stability 1.3 (marginal at
1.2), MARFE

EF1_L magnet above PLC current limits

next:
lower zxu by 3 mm
slow density rise time to 0.6 @0.3 s and 0.9 at 0.7 s

Load at 27-Jan-2011 10:17:12.00

Jan 27 2011 10:32:50:000AM 1110127002 Steve Wukitch plasma - better shot but right gap was 1.8 cm at the time of interest
RF was faulting at higher
NINJA gas puff near 1 sec causes density rise

next: decrease outer gap to 0.7 cm
RCUR increased to 0.66 from 0.655

Load at 27-Jan-2011 10:32:31.00

Jan 27 2011 10:46:44:617AM 1110127003 Steve Wukitch plasma - disruption ~0.75 s
startup looks fine

suspect a killer brick

next: no changes but enabled 50 ms Ar at 0.3 s
Load at 27-Jan-2011 10:44:08.00

Jan 27 2011 11:16:03:937AM 1110127004 Steve Wukitch plasma - still marfe-ing
second MARFE is related to the RF turning off with high nl_04
first MARFE
start up okay

next: tweak density rise to try to avoid early MARFE
Load at 27-Jan-2011 11:03:36.00

Jan 27 2011 11:26:26:877AM 1110127005 Steve Wukitch plasma - right gap decreased to 0.8 cm from 1 cm on previous
RF power was stair stepped to 1.3 MW
start up unchanged (reasonable)

next: increase gap to 1.8 cm from 0.8 cm
Load at 27-Jan-2011 11:25:05.00

Jan 27 2011 11:40:16:437AM 1110127006 Steve Wukitch plasma - right gap = 1.8 cm at 1 s
vertical unstable toward end of discharge
change antennas but keep waveform same

next: adjust zxu down 2 mm to avoid vertical instability
lower density to 0.7 to avoid late MARFE

Jan 27 2011 11:54:00:550AM 1110127007 Steve Wukitch plasma - right gap 1.8 cm at 1 s
vertical stability was better

next: reduce outer gap to ~0.8 cm by increasing RCUR to 0.66 from 0.653
Load at 27-Jan-2011 11:53:43.00

Jan 27 2011 12:10:13:790PM 1110127008 Steve Wukitch plasma right gap ~0.8-1 cm
moly brick at 1.2 s - does not kill the plasma
density has drifted down
start up okay

next: change to J antenna and higher power
anticipate the push from RF - request smaller outer gap by 1 mm
Load at 27-Jan-2011 12:09:38.00

Jan 27 2011 12:30:41:580PM 1110127009 Steve Wukitch plasma - runaway startup - looks like something increases Zeff at
0.03 s and loop voltage jumps and hard x-rays follow.

next: repeat without runaways

Jan 27 2011 12:30:24:590PM 1110127010 Steve Wukitch plasma - no hards this time - late MARFE
right gap 0.8 at 1 s
startup okay

next: increase outer gap to 1.8 cm
Load at 27-Jan-2011 12:29:46.00

Jan 27 2011 12:46:10:113PM 1110127011 Steve Wukitch plasma - two injections from J antenna front tiles/FS correlate with trips
right gap ~1.8 cm at 1 s

next: change to D and E antennas and repeat
Load at 27-Jan-2011 12:45:48.00

Jan 27 2011 01:00:36:173PM 1110127012 Steve Wukitch plasma - injection around 1.2 s
right gap ~1.8 cm at 1 s
start up looks okay

next: reduce right gap to ~0.8 cm (RCUR to 0.661)
Load at 27-Jan-2011 12:58:11.00

Jan 27 2011 01:16:47:570PM 1110127013 Steve Wukitch USN plasma - no injection this time
right gap ~0.9 cm

next: right gap to ~1.8 cm
Load at 27-Jan-2011 13:10:50.00

Jan 27 2011 01:27:26:183PM 1110127014 Steve Wukitch USN plasma - good shot
right gap ~0.9 cm

next: repeat with different ICRF

Jan 27 2011 01:45:48:290PM 1110127015 Steve Wukitch 015 USN plasma - good shot
right gap ~0.9 cm

next: switch to MP587a, switch segment #3 on segment #2 off, LSN
Load at 27-Jan-2011 13:42:31.00

cell access to power cycle FRCECE CPCI crate

Jan 27 2011 02:05:06:977PM 1110127016 Steve Wukitch LSN plasma into ramp down
good repeat of 1100120023

next: raise current to 0.75 s at 1.25 sec
decrease outer gap to 0.8 from 1.4 cm (RCUR from 0.657 to 0.66)
Load at 27-Jan-2011 14:03:44.00

Jan 27 2011 02:14:43:270PM 1110127017 Steve Wukitch LSN plasma into ramp down
right gap only went to 1.1 cm

next: increase outer gap further (RCUR from 0.66 to 0.663)
Load at 27-Jan-2011 14:10:07.00

Jan 27 2011 02:33:18:170PM 1110127018 Steve Wukitch LSN plasma into ramp down
right gap 0.8-1 cm

next: raise BT to 4.6 T (127 kA), IP 1.02-0.95 MA, nl_04=5
Load at 27-Jan-2011 14:29:27.00

Jan 27 2011 02:44:30:487PM 1110127019 Steve Wukitch LSN plasma into ramp down, 4.6 T, Ip= 1. MA
right gap 0.8 cm

next: raise Ip to 1.07 - 0.97 MA
Load at 27-Jan-2011 14:43:43.00

Jan 27 2011 02:58:31:330PM 1110127020 Steve Wukitch LSN plasma into rampdown

next: return to 3.6 T (-96.5 kA), IP=0.7-0.63 MA
Load at 27-Jan-2011 14:57:52.00

Jan 27 2011 03:15:48:313PM 1110127021 Steve Wukitch LSN plasma into rampdown, 3.6 T

next: tweak early outer gap to hold it more constant
tweak current to .65-.53 MA
Load at 27-Jan-2011 15:15:29.00

Jan 27 2011 03:43:21:393PM 1110127023 Steve Wukitch LSN plasma, disruption ~0.64 s
OH commutation failure

next: repeat
Load at 27-Jan-2011 15:43:00.00

Jan 27 2011 03:55:57:260PM 1110127024 Steve Wukitch LSN plasma, disruption ~0.8 s
startup is okay
lots of junk from 0.035 s
density may be too low

next: raise density to 4x10^19, modify current to 0.66 MA at 1.25 s
Load at 27-Jan-2011 15:54:54.00

Jan 27 2011 04:08:32:680PM 1110127025 Steve Wukitch LSN plasma, right gap ~1.2 cm

next: decrease right gap to 0.8 cm
Load at 27-Jan-2011 16:06:13.00

Jan 27 2011 04:18:26:453PM 1110127026 Steve Wukitch LSN plasma, right gap ~0.8 cm

next: 5.4 T (-150 kA), I=0.77-0.67 MA, nl04~5x10^19
Load at 27-Jan-2011 16:17:11.00

Jan 27 2011 04:32:42:370PM 1110127027 Steve Wukitch LSN plasma, right gap ~0.5 cm at 1 s, 5.4 T

next: tweak gap a bit with RCUR for larger gap
Load at 27-Jan-2011 16:32:17.00

Jan 27 2011 04:46:42:683PM 1110127028 Steve Wukitch LSN plasma, right gap ~1 cm at 1 s, 5.4 T

next: reload 025 and increase density to 1x10^20 at 1 s.
Load at 27-Jan-2011 16:45:39.00

Jan 27 2011 04:57:24:090PM 1110127029 Steve Wukitch LSN plasma, right gap ~1.2 cm at 1 s, 3.6 T, nl04~0.9

next: decrease right gap, Ip to 0.705 MA
Load at 27-Jan-2011 16:56:08.00

Jan 27 2011 05:06:57:407PM 1110127030 Steve Wukitch LSN plasma - ohmic H-mode

End of run

Engineering Operator Comments

Shot Time Type Status Comment

1 09:55:46:760AM Plasma Ok

2 10:18:45:303AM Plasma Ok

3 10:33:16:973AM Plasma Ok

4 10:46:40:047AM Plasma Ok

5 11:16:05:950AM Plasma Ok

6 11:29:31:087AM Plasma Ok

7 11:43:31:093AM Plasma Ok

8 11:56:31:023AM Plasma Ok

9 12:11:13:030PM Plasma Ok

10 12:23:54:957PM Plasma Ok

11 12:37:53:700PM Plasma Ok

12 12:51:24:527PM Plasma Ok

13 01:06:02:410PM Plasma Ok

14 01:22:08:497PM Plasma Ok

15 01:38:47:273PM Plasma Ok

16 01:52:12:453PM Plasma Ok

17 02:05:25:270PM Plasma Ok

18 02:18:51:600PM Plasma Ok

19 02:31:24:017PM Plasma Ok

20 02:44:57:677PM Plasma Ok

21 02:58:42:653PM Plasma Ok

22 03:15:57:653PM Plasma Ok

23 03:29:39:040PM Plasma Bad Oh commfailure

24 03:43:38:777PM Plasma Ok

25 03:56:11:417PM Plasma Ok

26 04:08:43:287PM Plasma Ok

27 04:21:05:187PM Plasma Ok

28 04:35:32:557PM Plasma Ok

29 04:48:51:313PM Plasma Ok

30 05:01:31:567PM Plasma Ok

System Availability

Jan 27 2011 09:55:31:393AM

System Available Comment Availability
Changed Owner Description Who Can
Change
Active MHD no secured - tagged out Jun 02 2008 11:03AM (sears) Joe Snipes Active MHD Antenna sears,snipes
BES yes BES system is online Oct 21 2010 11:33AM (bespam) Bill Rowan Beam Emission Spectroscopy bespam,liao,rowan
Bolometers yes 2pi (D+F) working. All midplane and off-midplane diode arrays working except WB1AX. Midplane foils calibrated and PRAD_MAIN is being filled. Divertor/Ledge foils not yet ready. Jul 15 2010 08:27AM (mlreinke) Matt Reinke Bolometers hutch,mlreinke
Boronization yes Nov 16 2010 02:36PM (dekow) Jim Irby Boronization dekow,irby
CNPA yes Multiple channel CNPA available Oct 21 2010 07:11PM (parker) Ron Parker Compact Neutral Analyzer parker
Cryopump - Upper Divertor no Shut down. Helium dewar removed. LN2 manual valve and solenoid valves are closed and tagged. Apr 06 2010 10:51AM (labombard) Brian LaBombard Upper Divertor Cryopump irby,labombard
CXRS yes Wide-view CXRS system is online Oct 21 2010 11:33AM (bespam) Bill Rowan Charge Exchange Spectroscopy bespam,blip,liao,rachmcd,rowan
D Alpha yes \ha2_bright is available; \SPECTROSCOPY::TOP.VUV.VIS_SIGNALS:MCP_VIS_SIG1 is not available Jul 01 2009 09:45AM (terry) Jim Terry Balmer Alpha Monitor irby,terry,wolfe
Dalsa yes system is aligned; new calibrations (relative brightness and position) not yet implemented Jun 29 2010 10:27AM (marmar) Earl Marmar Visible Bremsstrahlung marmar
Disruption Mitigation yes operational, but turned off Nov 03 2009 04:59PM (granetz) Robert Granetz Gas Jet granetz,whyte
Divertor IR no Mar 06 2007 10:50AM Glen Wurden Divertor IR Digital Video gwurden,terry
Divertor IR Spectroscopy no Mar 06 2007 10:51AM Glen Wurden Divertor IR Spectroscopy gwurden,terry
DNB no in test mode only Nov 03 2009 05:01PM (granetz) Robert Granetz Diagnostic Neutral Beam dterry,granetz,gung
ECDC yes Operational Jun 26 2010 09:28PM (irby) Jim Irby 2.45 GHz, 3 kW, discharge cleaning system dekow,irby,pfeiffer
FRC-ECE yes All channels working and calibrated. Oct 27 2010 03:41PM (phillips) Perry Phillips Heterodyne ECE-32 channels phillips
G-Side Ratiomatic yes Gauges are operational. Jun 28 2010 08:02PM (labombard) Brian LaBombard G-side ratiomatic ionization gauge labombard,toland
Glow Discharge no Plugs for Power Supply and Controls have been unplugged and red tagged making system safe for In-Vessel Access. Apr 05 2010 11:18AM (dekow) Jim Irby 1 kV, 5 A, glow discharge system dekow,dterry,irby
GPC yes Operational. Jul 28 2009 04:23PM (hubbard) Amanda Hubbard ECE Polychromater hubbard,schmidt
GPC2 yes Most channels operational. Oct 22 2010 11:46AM (hubbard) Amanda Hubbard ECE Polychromater hubbard,schmidt
GPI yes The Xpt-view, the midplane-view cameras are operational. The innerwall GPI (coupled to the fast-diodes) is available. Jul 01 2009 09:45AM (terry) Jim Terry Gas Puff Imaging terry,zweben
H/D yes operating normally Jun 29 2010 10:26AM (marmar) Earl Marmar H/D Ratio marmar
HEAT yes Jun 26 2010 11:19PM (dekow) Gary Dekow - Machine Heaters - burke,dekow
Hirex Jr yes Hirex-Jr has been installed Jun 28 2010 03:36PM (rice) John Rice High Resolution X-Ray ince,rice
Hirex Sr yes System installed and aligned. Inverted Profiles for Ti are available upon request. Vtor profiles still under revision. Dec 17 2010 09:25AM (ypodpaly) John Rice High Resolution X-Ray ince,rice,ypodpaly
HXR yes 32 Channels operational Oct 23 2010 01:41PM (parker) Ron Parker Hard X-Ray Array faust,parker,schmidt
ICRF D-Antenna yes system checked out ok on 11006728. Jun 28 2010 04:57PM (ylin) Steve Wukitch D-port antenna wukitch,ylin
ICRF E-Antenna yes system checked out ok on 1100628 Jun 28 2010 04:57PM (ylin) Steve Wukitch E-port antenna wukitch,ylin
ICRF J-Antenna yes system checked out ok. conditioned to vacuum. Jun 28 2010 04:58PM (ylin) Steve Wukitch J-port antenna wukitch,ylin
Laser Blow-Off yes operational and tested Jul 20 2010 04:42PM (g) Martin Greenwald Impurity Injection System g,nthoward
Lower Hybrid yes LH working. New directional couplers installed at input to each klystron. Oct 21 2010 11:42AM (dterry) Ron Parker Lower Hybrid dterry,parker,wallaceg
Lower Hybrid Reflectometer yes 50GHz: up-, 60 GHz up- and down- Oct 21 2010 11:31AM (sgbaek) Arturo Dominguez Lower Hybrid Reflectometer dominguez,marmar,parker,sgbaek
Lower Hybrid SOL reflectometer yes profiles and fluctuations both working. If requested, please request LH launcher to be moved in. Jan 18 2011 03:07PM (cornwall) Cornwall Lau Lower Hybrid SOL reflectometer cornwall,wukitch,ylin
LPI no Beam line removed May 30 2008 02:09PM (bose) Earl Marmar Lithium Pellet Injector bose,marmar
Ly-alpha no WB4LY and LLY working but not during ICRF. WB1LY not attached due to pickup problems. LYMID attached but have profile problems. Aug 24 2010 09:17AM (mlreinke) Matt Reinke Lyman alpha cameras labombard,mlreinke
McPherson yes Spectra being collected and tree filled. Wavelength scan is broken so fixed on the Mo XXXI and XXXII lines. Jul 15 2010 08:28AM (mlreinke) Jim Terry VUV Spectrometer mlreinke,terry
Michelson yes Operational. Oct 22 2010 11:46AM (hubbard) Amanda Hubbard ECE Te Profiles hubbard,schmidt
MKS yes Gauges are operational Jun 28 2010 08:02PM (labombard) Brian LaBombard Baratron pressure gauges labombard
MLP no System is in edge lab. Version 2 drivers ready to test. Needs a student to help work on it. Jul 14 2009 09:20PM (labombard) Brian LaBombard Mirror Langmuir Probe Electronics System labombard
MSE no As of 6/10/09, MSE is calibrated & ready to go. Awaiting DNB. Jun 10 2009 10:34AM (sscott) Steve Scott Motional Stark Effect jinseok,sscott
Neutrons yes All systems are on and functional Jun 29 2010 12:56PM (fiore) Catherine Fiore Neutron Detectors fiore
Neuts and Hards yes PMT Neuts_hards, ssd_x01, ssd_x02, ssd_x03 Jun 26 2010 09:21PM (irby) Jim Irby X-Ray/Neutron Detectors at K-Hor irby
NINJA no Capillaries tested in-vessel. Jun 28 2010 08:08PM (labombard) Brian LaBombard NINJA gas puff labombard,terry
PCI yes Operational. AM (2 * 39.51) MHz. Dec 13 2010 05:29PM (ntsujii) Miklos Porkolab Phase Contrast Imaging ennever,ntsujii,porkolab
Penning Gauges no High voltage power supplies are turned off, waiting for work at A-port horizontal to be finished. Jun 28 2010 08:07PM (labombard) Brian LaBombard Penning Ionization Gauges labombard
Plasma TV yes WIDE1, WIDE2 (chan 33), DANT, JANT and DIV are operational. Jul 01 2009 09:46AM (terry) Jim Terry Video of plasma via several cameras dekow,irby,terry,wolfe
Polarimeter no Safe for Machine Entry Sep 14 2007 12:17PM (irby) Jim Irby C-Mod Polarimeter irby
Power - Alternator Air Switch yes Jun 26 2010 11:19PM (dekow) Gary Dekow feeds all the other supplies cochran,dekow,dterry,irby
Power - PEI yes Jun 26 2010 11:19PM (dekow) Gary Dekow PEI System cochran,dekow,dterry,irby
Power - TMX yes Jun 26 2010 11:19PM (dekow) Gary Dekow Ef2s,. EFCs and A-Coils byford,cochran,dekow,dterry,irby
Power Systems yes Jun 26 2010 11:20PM (dekow) Jim Irby C-Mod Magnet Supplies byford,cochran,dekow,dterry,irby
Probe Array - ISD yes Operational. Jun 28 2010 08:03PM (labombard) Brian Labombard Inner Lower Divertor Probe Array labombard
Probe Array - LH yes Operational. Jun 28 2010 08:03PM (labombard) Brian LaBombard Lower Hybrid Probe Array labombard
Probe Array - OSD yes F and J outer divertor probes are operational. Jun 28 2010 08:04PM (labombard) Brian LaBombard Outer Lower Divertor Probe Array labombard
Probe Array - UDIV yes Operational, except probe#13 Jun 28 2010 08:04PM (labombard) Brian LaBombard Upper Divertor Probe Array labombard
Reflectometer yes As of 1101123, the 60, 88u, 88l, 140 and variable set at 115GHz are operational. The 50, 75 and 112 are nonoperational. On 1101123, the noise band at ~200kHz is again seen on the 88u and 88l channels. Nov 23 2010 09:30AM (dominguez) Earl Marmar Reflectometer dominguez,marmar
Scanning Probe - ASP yes Operational. New Langmuir-Mach probe head installed. Jun 28 2010 08:05PM (labombard) Brian LaBombard A-Port Scanning Probe labombard
Scanning Probe - FSP yes Operational. Jun 28 2010 08:05PM (labombard) Brian LaBombard F-Port Scanning Probe labombard
Scanning Probe - WASP yes Both A and K units are operational. Coil polarity needs to be checked. Jun 28 2010 08:06PM (labombard) Brian LaBombard Inner Wall Scanning Probe labombard,nsmick
Sparker yes HV supply on, cable run to sparker at k-hor Jun 23 2010 02:41PM (irby) Jim Irby Field Emission Preionization for C-Mod dekow,irby,parkin
Surface Science Station yes SSS installed and leak tested. Oct 21 2010 11:31AM (ochoukov) Bruce Lipschultz Radially scanning probe located on K-port blip,ochoukov
TCI yes No new CO2 detector, so still missing edge channels Jun 23 2010 02:40PM (irby) Jim Irby Two-Color Interferometer irby,murray
TS - Core yes Operating with 2 lasers Oct 22 2010 01:06PM (jwhughes) Jerry Hughes Core Thomson scattering jwhughes,yma
TS - Edge yes Operational Jul 14 2010 11:54AM (jwhughes) Jerry Hughes Millimeter resolution edge Thomson scattering jwhughes,yma
Vispec no 350 and 670 nm, 4 spatial channels Nov 28 2007 09:58AM (agraf) Alex Graf Visible Spectrometer agraf
XEUS yes Raw spectra stored but not line brightness time histories are going into the tree yet. Jan 20 2011 10:45AM (mlreinke) Matt Reinke X-ray Extended Ultraviolet Spectrometer mlreinke
XTOMO yes Core system working. Edge system waiting for H-modes. Jul 01 2010 11:55AM (mlreinke) Bob Granetz X-Ray Tomography granetz,mlreinke

Session Leader Comments
Jan 27 2011 10:16:57:700AM	1110127001	Istvan Cziegler	Ip=0.8MA Bt=5.4T nl04=1e20m^-2 OUTER_GAP=2cm shot disrupted at t=1.4s He puff hits at t=1.1s (starting puff 0.1s earllier on the next one) Signals are good on all APD's, no saturation. RF was lower than expected, repeat to get the required values. EDD propagation in the far SOL is seen for P_ICRF=1.0MW already. First column (farthest into SOL) has a fast IDD feature. Behind antenna? Nominal R_major=91.1cm Antenna R_major=91.3cm
Jan 27 2011 10:42:08:577AM	1110127002	Istvan Cziegler	Full length shot. nl04=0.95e20m^-2 OUTER_GAP=1.8cm He puff hits at t=1.03s (starting puff 0.02s earllier on the next one) Signals are good on all APD's, no saturation. RF OK, some trips at the highest power. EDD propagation in the far SOL is seen for P_ICRF=1.0MW already. First column (farthest into SOL) has a fast IDD feature. Starting at v=2.3km/s (IDD) second column starting at v=2.5km/s (EDD) which would indicate the same potential drop scale length (if it's the two faces of the antenna) P_ICRF=2.5MW 1st col - EDD 2nd col - IDD 3rd col - EDD
Jan 27 2011 10:36:22:103AM	1110127003	Istvan Cziegler	Disrupted at t=0.76s No light on APD's.
Jan 27 2011 11:12:30:313AM	1110127004	Istvan Cziegler	Full length shot. nl04=1.2e20m^-2 (during RF) OUTER_GAP=1.1cm He puff hits before 1.0s (move it a tad later) Signals are good on all APD's, no saturation. P=1MW col1 - v=-1.15km/s col2 - v=2.1km/s then more or less regular L-mode P=1.7MW col1 - v=-1.14km/s col2 - v=1.9km/s then reg L-mode no power shows the EDD-IDD-EDD effect with a small gap! The velocity of the EDD feature in the edge depends on RF. Starting single antenna experiments.
Jan 27 2011 11:32:54:520AM	1110127005	Istvan Cziegler	Full length shot. RF: 0-1.2MW from D nl04=0.85e20m^-2 (during RF) OUTER_GAP=0.8-1.0cm He puff hits at 1.0s (perfect) Signals are good on all APD's, no saturation. P=0.2MW col1 - v=-940m/s col2 - v=-1060m/s -- and v=1340m/s in EDD (weak) then reg L-mode P=0.4MW col1 - v=-980m/s col2 - v=-1200m/s -- and v=1500m/s in EDD (weak) then reg L-mode P=0.6MW col1 - dominantly EDD: v=3.1km/s rest reg L-mode The effect gets stronger from here. Next shot: repeat with a 2cm gap.
Jan 27 2011 11:40:47:250AM	1110127006	Istvan Cziegler	Full length shot. RF: 0-1.2MW from D nl04=0.85e20m^-2 (during RF) OUTER_GAP=1.8-2.0cm He puff hits at 1.03s (bring it 30ms earlier) Signals are good on all APD's, no saturation. In previous ones the EDD propagation becomes dominant at: P=0.6MW col1 - strong EDD: v=6.9km/s decays within 3 channels (~1.1cm) rest reg L-mode Next shot: repeat with the same power from E, but ramp RF down at 1.35s to reduce MARFE
Jan 27 2011 11:55:19:940AM	1110127007	Istvan Cziegler	Full length shot. RF: 0-1.2MW from nl04=0.83e20m^-2 (during RF) OUTER_GAP=1.8-2.0cm He puff hits at 0.97s (bring it 30ms earlier) Signals are good on all APD's, no saturation. In previous ones the EDD propagation becomes dominant at: P=0.6MW col1 - strong EDD: v=2.8km/s decays within 2 channels (~.8cm) rest reg L-mode Next shot: repeat with small outer gap
Jan 27 2011 12:07:41:150PM	1110127008	Istvan Cziegler	Full length shot. RF: 0-1.2MW from nl04=0.77e20m^-2 (during RF) OUTER_GAP=1.0cm He puff hits at 0.97s Signals are good on all APD's, no saturation. In previous ones the EDD propagation becomes dominant at: P=0.6MW col1 - very weak EDD: v=1.3km/s col2 - weak but stronger EDD, same velocity rest L-mode except for fast IDD feature close to LCFS Next shot: repeat with J (both sides, so double the power)
Jan 27 2011 12:19:41:387PM	1110127009	Istvan Cziegler	Early shutdown. No data.
Jan 27 2011 12:49:19:223PM	1110127010	Istvan Cziegler	Full length shot. RF: 0-2.2MW from J nl04=0.9-1.0e20m^-2 (during RF) OUTER_GAP=0.9cm He puff hits at 0.97s Signals are good on all APD's, no saturation. In previous ones the EDD propagation becomes dominant at: P=0.6MW so at P=0.8MW: col1 - weak EDD: v=1.7km/s, IDD: v=-1.4km/s col2 - dominant EDD (large v spread) v=3.0km/s rest L-mode except for fast IDD feature close to LCFS P=2.2MW col1 both EDD (v=2.6km/s) and IDD (v=-2.1km/s) present col2 EDD dominant (v=3.km/s) Next shot: repeat with 2cm outer gap
Jan 27 2011 12:48:47:090PM	1110127011	Istvan Cziegler	Full length shot. RF: 0-2.2MW from J nl04=0.85-0.98e20m^-2 (during RF) OUTER_GAP=1.8-2.0cm He puff hits at 0.97s Signals are good on all APD's, no saturation. In previous ones the EDD propagation becomes dominant at P=0.6MW so at P=1.2MW (higher than that limit) col1-2 strong, fast IDD col3 EDD (!!) switches back in ~2channels but this is reproduced even with 0.4MW of power. The OUTER GAP is key! Is this due to positive E_r just outside the LCFS due to temperature gradient? Next shot: repeat with E+D providing the power instead of J
Jan 27 2011 01:04:59:727PM	1110127012	Istvan Cziegler	Full length shot. RF: 0-2.2MW from D+E nl04=0.77-1.0e20m^-2 (during RF) OUTER_GAP=1.8-2.0cm He puff hits at 0.97s Signals are good on all APD's, no saturation. In previous ones the EDD propagation becomes dominant at P=0.6MW so at 0.8MW (higher than that limit) col1 - strong, fast (v=6.0km/s) EDD feature decays in 2 channels (~8mm) rest is L-mode at max power col1 strong, extra sharp EDD (v=7.7km/s) the same radial profile as with 400kW Next shot: repeat with small gap
Jan 27 2011 01:16:29:010PM	1110127013	Istvan Cziegler	Full length shot. RF: 0-2.2MW from D+E nl04=0.7-1.0e20m^-2 (during RF) OUTER_GAP=0.9cm He puff hits at 0.97s Signals are good on all APD's, no saturation. In previous ones the EDD propagation becomes dominant at P=0.6MW so at 0.8MW (higher than that limit) col1 - VERY weak EDD (v=1.5km/s) falls off within ~8mm the rest is L-mode with a fast IDD feature at LCFS (this structure is unaffected by power) Next shot: repeat with large gap and power provided by D+J (1-to-1)
Jan 27 2011 01:30:46:590PM	1110127014	Istvan Cziegler	Full length shot. RF: 0-2.4MW from D+J nl04=0.7-1.0e20m^-2 (during RF) OUTER_GAP=2.0cm He puff hits at 0.97s Signals are good on all APD's, no saturation. In previous ones the EDD propagation becomes dominant at P=0.6MW so at 0.9MW (higher than that limit) col1 - strong, sharp EDD (v=3.4km/s) col2 - strong, sharp, fast IDD (v=-3.3km/s) col3 - switch over col4 - strong, sharp EDD (v=4.2km/s) decays over 4 columns (~1.5cm) Next shot: repeat with power provided by E+J (1-to-1)
Jan 27 2011 01:46:48:423PM	1110127015	Istvan Cziegler	Full length shot. RF: 0-2.4MW from E+J nl04=0.7-1.0e20m^-2 (during RF) OUTER_GAP=1.9-2.0cm He puff hits at 0.97s Signals are good on all APD's, no saturation. In previous ones the EDD propagation becomes dominant at P=0.6MW so at 0.85MW (higher than that limit) col1 - strong, sharp IDD (v=-2.5km/s) (weak EDD at v=5.5km/s) col2 - strong, sharp IDD (v=-3.km/s) col3 - switch over col4 - strong, sharp EDD (v=4.2km/s) decays over 4 columns (~1.5cm) Thank you all for the successful half-run!
Jan 28 2011 10:48:16:423AM	1110127016	Jim Terry	Set up for magnetic mapping of filaments between outboard midplane GPI and divertor probe 9. This should occur at Bt=3.6 T, Ip=0.780 MA. Outer gap is 1.4 cm NINJA puus at 0.63 s and 0.88 s Phantom timing start at 0.95 s APD timings set to 0.75 to 1.20 s Good shot - just as programmed good max correlation moves off of array at 0.95 s max cor=0.51 at t=0.838 with R,Z=88.39,-3.00 repeat but with smaller outer gap (-> 0.8 cm) and smaller ramp rate (Ip at 0.75 MA at 1.2 s).
Jan 28 2011 10:52:59:703AM	1110127017	Jim Terry	Set up for magnetic mapping of filaments between outboard midplane GPI and divertor probe 9. This should occur at Bt=3.6 T, Ip=0.780 MA. Outer gap is 1.1 cm NINJA puus at 0.63 s and 0.88 s Phantom timing start at 0.95 s APD timings set to 0.75 to 1.20 s great shot - just as programmed Ip ramped from 0.79 to 0.74 MA good max correlation moves thru array and then off of array at 1.08 s max cor=0.60 at t=0.831 found at R,Z=88.77,-2.64 repeat but with smaller outer gap (-> 0.8 cm), same ramp
Jan 28 2011 11:02:40:590AM	1110127018	Jim Terry	Set up for magnetic mapping of filaments between outboard midplane GPI and divertor probe 9. This should occur at Bt=3.6 T, Ip=0.780 MA. Outer gap is now 0.9 cm NINJA puus at 0.63 s and 0.88 s Phantom timing start at 0.95 s APD timings set to 0.75 to 1.20 s great shot - just as programmed Ip ramped from 0.79 to 0.74 MA good max correlation moves thru array and then off of array at 1.08 s max cor=0.58 at t=0.838 with R,Z=89.53,-2.24 Next shot: increase Ip and Bt (to 4.6 T) at const q
Jan 28 2011 11:08:02:813AM	1110127019	Jim Terry	Set up for magnetic mapping of filaments between outboard midplane GPI and divertor probe 9. This should occur at Bt=4.63 T, Ip=0.990 MA. Outer gap is now 0.9 cm NINJA puus at 0.63 s and 0.88 s Phantom timing start at 0.95 s APD timings set to 0.75 to 1.20 s great shot - just as programmed Ip ramped from 1.02 to 0.95 MA good max correlation moves thru array, disturbed by injection at 0.95 s max cor=0.55 at t=0.825 with R,Z=89.15,-3.00 max cor=0.55 at t=0.831 with R,Z=89.15,-2.61 max cor=0.54 at t=0.838 with R,Z=89.15,-3.00 Next shot: slightly higher Ip
Jan 28 2011 11:20:15:840AM	1110127020	Jim Terry	Set up for magnetic mapping of filaments between outboard midplane GPI and divertor probe 9. This should occur at Bt=4.63 T, Ip=0.990 MA. Outer gap is 0.9 cm NINJA puus at 0.63 s and 0.88 s Phantom timing start at 0.95 s APD timings set to 0.75 to 1.20 s good shot - Ip ramped from 1.02 to 0.97 MA no obvious change in the mapping at these higher fields and currents. good max correlation moves thru array and then off of array at 1.06 s max cor=0.49 at t=0.953 with R,Z=89.15,-4.14 max cor=0.55 at t=0.959 with R,Z=89.15,-4.14 max cor=0.41 at t=0.966 with R,Z=89.15,-4.14 max cor=0.53 at t=0.980 with R,Z=89.15,-4.14 max cor=0.62 at t=0.982 with R,Z=89.15,-4.14 Next shot: try to map probe 10, which means going back to 3.6 T and an Ip ramp from 0.70 to 0.63 MA
Jan 28 2011 01:47:08:410PM	1110127021	Jim Terry	Set up for magnetic mapping of filaments between outboard midplane GPI and divertor probe 10. This should occur at Bt=3.6 T, Ip=0.680 MA. Outer gap is 0.9 cm NINJA puus at 0.63 s and 0.88 s Phantom timing start at 0.95 s APD timings set to 0.75 to 1.20 s good shot, but mapping is not right - Ip ramped from 0.70 to 0.63 MA max correlation is < 0.2 max cor=0.53 at t=0.786 with R,Z=89.92,-3.00 max cor=0.62 at t=0.792 with R,Z=89.92,-3.00 max cor=0.52 at t=0.799 with R,Z=89.53,-3.38 max cor=0.54 at t=0.805 with R,Z=89.53,-3.38 max cor=0.51 at t=0.812 with R,Z=89.53,-3.00 max cor=0.62 at t=0.818 with R,Z=89.53,-3.38 max cor=0.59 at t=0.825 with R,Z=89.53,-3.76 max cor=0.66 at t=0.831 with R,Z=89.53,-3.76 max cor=0.63 at t=0.838 with R,Z=89.53,-3.76 Next shot: reduce Ip ramp from 0.65 to 0.55 MA
Jan 28 2011 01:49:16:217PM	1110127022	Jim Terry	Set up for magnetic mapping of filaments between outboard midplane GPI and divertor probe 10. This should occur at Bt=3.6 T, Ip=0.680 MA. Outer gap is 0.9 cm NINJA puffs at 0.63 s and 0.88 s Phantom timing start at 0.95 s APD timings set to 0.75 to 1.20 s good shot, but mapping is not right - Ip ramped from 0.66 to 0.55 MA max correlation is < 0.3 Next shot: increase gap to 1.3 cm, and go back to nominal mapping-Ip-ramp from 0.66 to 0.56 MA
Jan 28 2011 01:58:50:103PM	1110127024	Jim Terry	Set up for magnetic mapping of filaments between outboard midplane GPI and divertor probe 10. This should occur at Bt=3.6 T, Ip=0.680 MA. Outer gap is 1.4 cm NINJA puffs at 0.63 s and 0.88 s Phantom timing start at 0.95 s APD timings set to 0.75 to 1.20 s disrupting shot - maps to top of array - Ip ramped from 0.73 to 0.72 MA before it disrupts max correlation is >0.7 max cor=0.68 at t=0.759 with R,Z=88.77,-1.11 max cor=0.69 at t=0.766 with R,Z=88.77,-1.11 max cor=0.73 at t=0.772 with R,Z=88.77,-1.11 max cor=0.74 at t=0.779 with R,Z=88.77,-1.11 max cor=0.72 at t=0.785 with R,Z=88.77,-1.11 max cor=0.76 at t=0.790 with R,Z=89.15,-1.08 max cor=0.81 at t=0.796 with R,Z=88.76,-1.89 max cor=0.73 at t=0.801 with R,Z=88.76,-1.89 max cor=0.81 at t=0.807 with R,Z=88.76,-1.89 Next shot: Ip-ramp from 0.76 to 0.66 MA
Jan 28 2011 02:15:35:953PM	1110127025	Jim Terry	Set up for magnetic mapping of filaments between outboard midplane GPI and divertor probe 10. This should occur at Bt=3.6 T, Ip=0.680 MA. Outer gap is 1.13 cm NINJA puffs at 0.602 s and 0.88 s Phantom timing start at 0.95 s APD timings set to 0.75 to 1.20 s good shot - great mapping - Ip ramped from 0.73 to 0.63 MA max correlation is >0.6 max cor=0.69 at t=0.917 with R,Z=88.77,-2.27 max cor=0.69 at t=0.923 with R,Z=88.77,-2.27 max cor=0.68 at t=0.930 with R,Z=88.77,-2.27 max cor=0.63 at t=0.936 with R,Z=88.76,-1.89 max cor=0.68 at t=0.943 with R,Z=88.77,-2.64 max cor=0.72 at t=0.948 with R,Z=88.77,-2.27 max cor=0.74 at t=0.953 with R,Z=88.77,-2.27 max cor=0.70 at t=0.958 with R,Z=88.77,-2.64 Next shot: reduce gap to 0.8
Jan 28 2011 02:24:38:407PM	1110127026	Jim Terry	Set up for magnetic mapping of filaments between outboard midplane GPI and divertor probe 10. This should occur at Bt=3.6 T, Ip=0.680 MA. Outer gap is 0.8 cm NINJA puffs at 0.602 s and 0.88 s Phantom timing start at 0.95 s APD timings set to 0.75 to 1.20 s good shot - great mapping - Ip ramped from 0.73 to 0.63 MA max cor moves down the array, off around 1.0 s It has movesd in as well because of the smaller gap. max correlation is >0.6 max cor=0.61 at t=0.838 with R,Z=89.53,-1.08 max cor=0.66 at t=0.845 with R,Z=89.53,-1.08 max cor=0.62 at t=0.851 with R,Z=89.53,-1.08 max cor=0.64 at t=0.858 with R,Z=89.53,-1.47 max cor=0.60 at t=0.864 with R,Z=89.53,-1.47 max cor=0.62 at t=0.871 with R,Z=89.92,-1.08 max cor=0.68 at t=0.877 with R,Z=89.53,-1.47 max cor=0.66 at t=0.881 with R,Z=89.53,-1.47 Next shot: try to map probe 8 with 1.5 circuits, i.e Bt=5.4 T and Ip from 0.77 to 0.67 MA
Jan 27 2011 04:36:07:850PM	1110127027	Jim Terry	Set up for magnetic mapping of filaments between outboard midplane GPI and divertor probe 8. This should occur at Bt=5.4 T, Ip=0.740 MA. Outer gap is 0.8 cm NINJA puffs at 0.602 s and 0.88 s Phantom timing start at 0.95 s APD timings set to 0.75 to 1.20 s good shot - no correlation > 0.2 Next shot: increase the gap to 1.4 cm
Jan 27 2011 04:46:43:510PM	1110127028	Jim Terry	Set up for magnetic mapping of filaments between outboard midplane GPI and divertor probe 8. This should occur at Bt=5.4 T, Ip=0.740 MA. Outer gap is 0.8 cm NINJA puffs at 0.602 s and 0.88 s Phantom timing start at 0.95 s APD timings set to 0.75 to 1.20 s good shot - no correlation > 0.2 Next shot: reload shot 25 which had good correlation with probe 10, but raise the density with a ramp from NL04=0.6 to 1e20
Jun 8 2011 02:09:59:897PM	1110127029	Jim Terry	Set up for magnetic mapping of filaments between outboard midplane GPI and divertor probe 10. This should occur at Bt=3.6 T, Ip=0.705 MA. Outer gap is ~1.3 cm - changing NINJA puffs at 0.602 s and 0.88 s Phantom timing start at 0.95 s APD timings set to 0.75 to 1.20 s good shot - good max correlations during Ip ramp Note increase in max correlation from t=0.75 to 0.86 s max cor=0.75 at t=0.949 with R,Z=88.77,-2.64 max cor=0.76 at t=0.951 with R,Z=88.77,-2.64 max cor=0.74 at t=0.953 with R,Z=88.77,-2.64 max cor=0.72 at t=0.955 with R,Z=88.77,-2.64 max cor=0.72 at t=0.957 with R,Z=88.77,-2.64 max cor=0.64 at t=0.959 with R,Z=88.77,-2.64 max cor=0.72 at t=0.961 with R,Z=88.77,-2.64 max cor=0.83 at t=0.964 with R,Z=88.77,-2.64 max cor=0.78 at t=0.966 with R,Z=88.77,-2.64 max cor=0.75 at t=0.968 with R,Z=88.77,-2.64 max cor=0.80 at t=0.970 with R,Z=88.77,-2.64 max cor=0.73 at t=0.972 with R,Z=88.77,-3.03 max cor=0.74 at t=0.974 with R,Z=88.77,-3.03 max cor=0.81 at t=0.976 with R,Z=88.77,-3.03 max cor=0.81 at t=0.980 with R,Z=88.77,-3.03 max cor=0.76 at t=0.982 with R,Z=88.77,-3.03 max cor=0.80 at t=0.984 with R,Z=88.77,-2.64 max cor=0.73 at t=0.986 with R,Z=88.77,-3.03 max cor=0.73 at t=0.988 with R,Z=88.77,-3.03 max cor=0.79 at t=0.990 with R,Z=88.77,-3.03 max cor=0.76 at t=0.992 with R,Z=88.77,-3.41 max cor=0.76 at t=0.994 with R,Z=88.77,-3.41 max cor=0.77 at t=0.996 with R,Z=88.77,-3.41 max cor=0.75 at t=0.998 with R,Z=88.77,-3.41 max cor=0.68 at t=1.000 with R,Z=88.77,-3.03 max cor=0.71 at t=1.002 with R,Z=88.39,-3.38 max cor=0.72 at t=1.005 with R,Z=88.77,-3.41 max cor=0.77 at t=1.007 with R,Z=88.77,-3.78 Next shot: keep the density ramp but hold the current constant so that the max correlation is in the middle of the array
Jun 8 2011 03:33:42:360PM	1110127030	Jim Terry	Set up for magnetic mapping of filaments between outboard midplane GPI and divertor probe 10. This should occur at Bt=3.6 T, Ip=0.705 MA. Outer gap is ~1.3 cm - changing NINJA puffs at 0.602 s and 0.88 s Phantom timing start at 0.95 s APD timings set to 0.75 to 1.20 s good shot, but short Ohmic H-mode at 0.75-1.06 - good max correlations during Ip flattop There is an Ohmic H-mode from 0.75-0.898 s with small ELM bursts starting at 0.826 s. The ELMs have a growing 200 kHz precursor oscillation. There is also a good QCM mode during that time that has a 13 km/s EDD poloidal velocity! See entry under TOPIC GPI. No EFIT mapping between 0.78 and 0.9, i.e. the H mode time, yet there is still good mcax correlation (0.5-0.7) max correlations ~0.6 max cor=0.60 at t=0.759 with R,Z=89.92,-1.47 max cor=0.69 at t=0.766 with R,Z=89.53,-1.08 max cor=0.66 at t=0.772 with R,Z=89.53,-1.08 max cor=0.57 at t=0.779 with R,Z=89.53,-1.08 max cor=0.55 at t=0.786 with R,Z=89.53,-1.08 max cor=0.52 at t=0.792 with R,Z=90.30,-1.08 max cor=0.51 at t=0.799 with R,Z=89.53,-1.08 max cor=0.35 at t=0.805 with R,Z=89.53,-1.08 max cor=0.50 at t=0.812 with R,Z=89.53,-1.08 max cor=0.52 at t=0.818 with R,Z=89.92,-1.08 max cor=0.63 at t=0.825 with R,Z=90.30,-1.08 max cor=0.52 at t=0.831 with R,Z=89.92,-1.08 max cor=0.60 at t=0.838 with R,Z=90.30,-1.08 max cor=0.67 at t=0.845 with R,Z=89.92,-1.08 max cor=0.68 at t=0.851 with R,Z=89.92,-1.08 max cor=0.59 at t=0.858 with R,Z=90.30,-1.08 max cor=0.60 at t=0.864 with R,Z=90.30,-1.08 max cor=0.66 at t=0.871 with R,Z=90.30,-1.08 max cor=0.49 at t=0.877 with R,Z=89.92,-1.08 max cor=0.68 at t=0.882 with R,Z=89.92,-1.08 max cor=0.54 at t=0.886 with R,Z=90.30,-1.08 max cor=0.57 at t=0.890 with R,Z=91.08,-1.08 max cor=0.62 at t=0.894 with R,Z=89.92,-1.08 max cor=0.66 at t=0.898 with R,Z=91.08,-1.08 Max correlation does not change much across the H-to-L transition

Physics Operator Comments
Jan 27 2011 09:11:58:680AM		Robert Granetz	Snowstorm last night/this morning. Start of run is delayed until 10:00. Granetz filling in as physics operator until Steve Wukitch can get in, probably around 10:30. I've loaded Steve's shot that he setup last evening: /home/wukitch/pcs_scratch/pcs_1110127000. Seg 1 is from yesterday, and has been adjusted to account for lack of cryopump today. Seg 2 is for Istvan's morning run. Seg 3 is for Jim Terry's afternoon run.
Jan 27 2011 09:43:24:940AM		Robert Granetz	Steve Wukitch just made it in, so he will takeover now as physop. We still have 15 minutes before the run starts.
Jan 27 2011 10:20:11:650AM	1110127001	Steve Wukitch	load from 1110126028 for seg1 startup with adjustment for no cryopump (25 ms); seg#2 from 1100817016 for USN right gap near 2 cm result: plasma, disruption ~1.4 s, vertical stability 1.3 (marginal at 1.2), MARFE EF1_L magnet above PLC current limits next: lower zxu by 3 mm slow density rise time to 0.6 @0.3 s and 0.9 at 0.7 s Load at 27-Jan-2011 10:17:12.00
Jan 27 2011 10:32:50:000AM	1110127002	Steve Wukitch	plasma - better shot but right gap was 1.8 cm at the time of interest RF was faulting at higher NINJA gas puff near 1 sec causes density rise next: decrease outer gap to 0.7 cm RCUR increased to 0.66 from 0.655 Load at 27-Jan-2011 10:32:31.00
Jan 27 2011 10:46:44:617AM	1110127003	Steve Wukitch	plasma - disruption ~0.75 s startup looks fine suspect a killer brick next: no changes but enabled 50 ms Ar at 0.3 s Load at 27-Jan-2011 10:44:08.00
Jan 27 2011 11:16:03:937AM	1110127004	Steve Wukitch	plasma - still marfe-ing second MARFE is related to the RF turning off with high nl_04 first MARFE start up okay next: tweak density rise to try to avoid early MARFE Load at 27-Jan-2011 11:03:36.00
Jan 27 2011 11:26:26:877AM	1110127005	Steve Wukitch	plasma - right gap decreased to 0.8 cm from 1 cm on previous RF power was stair stepped to 1.3 MW start up unchanged (reasonable) next: increase gap to 1.8 cm from 0.8 cm Load at 27-Jan-2011 11:25:05.00
Jan 27 2011 11:40:16:437AM	1110127006	Steve Wukitch	plasma - right gap = 1.8 cm at 1 s vertical unstable toward end of discharge change antennas but keep waveform same next: adjust zxu down 2 mm to avoid vertical instability lower density to 0.7 to avoid late MARFE
Jan 27 2011 11:54:00:550AM	1110127007	Steve Wukitch	plasma - right gap 1.8 cm at 1 s vertical stability was better next: reduce outer gap to ~0.8 cm by increasing RCUR to 0.66 from 0.653 Load at 27-Jan-2011 11:53:43.00
Jan 27 2011 12:10:13:790PM	1110127008	Steve Wukitch	plasma right gap ~0.8-1 cm moly brick at 1.2 s - does not kill the plasma density has drifted down start up okay next: change to J antenna and higher power anticipate the push from RF - request smaller outer gap by 1 mm Load at 27-Jan-2011 12:09:38.00
Jan 27 2011 12:30:41:580PM	1110127009	Steve Wukitch	plasma - runaway startup - looks like something increases Zeff at 0.03 s and loop voltage jumps and hard x-rays follow. next: repeat without runaways
Jan 27 2011 12:30:24:590PM	1110127010	Steve Wukitch	plasma - no hards this time - late MARFE right gap 0.8 at 1 s startup okay next: increase outer gap to 1.8 cm Load at 27-Jan-2011 12:29:46.00
Jan 27 2011 12:46:10:113PM	1110127011	Steve Wukitch	plasma - two injections from J antenna front tiles/FS correlate with trips right gap ~1.8 cm at 1 s next: change to D and E antennas and repeat Load at 27-Jan-2011 12:45:48.00
Jan 27 2011 01:00:36:173PM	1110127012	Steve Wukitch	plasma - injection around 1.2 s right gap ~1.8 cm at 1 s start up looks okay next: reduce right gap to ~0.8 cm (RCUR to 0.661) Load at 27-Jan-2011 12:58:11.00
Jan 27 2011 01:16:47:570PM	1110127013	Steve Wukitch	USN plasma - no injection this time right gap ~0.9 cm next: right gap to ~1.8 cm Load at 27-Jan-2011 13:10:50.00
Jan 27 2011 01:27:26:183PM	1110127014	Steve Wukitch	USN plasma - good shot right gap ~0.9 cm next: repeat with different ICRF
Jan 27 2011 01:45:48:290PM	1110127015	Steve Wukitch	015 USN plasma - good shot right gap ~0.9 cm next: switch to MP587a, switch segment #3 on segment #2 off, LSN Load at 27-Jan-2011 13:42:31.00 cell access to power cycle FRCECE CPCI crate
Jan 27 2011 02:05:06:977PM	1110127016	Steve Wukitch	LSN plasma into ramp down good repeat of 1100120023 next: raise current to 0.75 s at 1.25 sec decrease outer gap to 0.8 from 1.4 cm (RCUR from 0.657 to 0.66) Load at 27-Jan-2011 14:03:44.00
Jan 27 2011 02:14:43:270PM	1110127017	Steve Wukitch	LSN plasma into ramp down right gap only went to 1.1 cm next: increase outer gap further (RCUR from 0.66 to 0.663) Load at 27-Jan-2011 14:10:07.00
Jan 27 2011 02:33:18:170PM	1110127018	Steve Wukitch	LSN plasma into ramp down right gap 0.8-1 cm next: raise BT to 4.6 T (127 kA), IP 1.02-0.95 MA, nl_04=5 Load at 27-Jan-2011 14:29:27.00
Jan 27 2011 02:44:30:487PM	1110127019	Steve Wukitch	LSN plasma into ramp down, 4.6 T, Ip= 1. MA right gap 0.8 cm next: raise Ip to 1.07 - 0.97 MA Load at 27-Jan-2011 14:43:43.00
Jan 27 2011 02:58:31:330PM	1110127020	Steve Wukitch	LSN plasma into rampdown next: return to 3.6 T (-96.5 kA), IP=0.7-0.63 MA Load at 27-Jan-2011 14:57:52.00
Jan 27 2011 03:15:48:313PM	1110127021	Steve Wukitch	LSN plasma into rampdown, 3.6 T next: tweak early outer gap to hold it more constant tweak current to .65-.53 MA Load at 27-Jan-2011 15:15:29.00
Jan 27 2011 03:43:21:393PM	1110127023	Steve Wukitch	LSN plasma, disruption ~0.64 s OH commutation failure next: repeat Load at 27-Jan-2011 15:43:00.00
Jan 27 2011 03:55:57:260PM	1110127024	Steve Wukitch	LSN plasma, disruption ~0.8 s startup is okay lots of junk from 0.035 s density may be too low next: raise density to 4x10^19, modify current to 0.66 MA at 1.25 s Load at 27-Jan-2011 15:54:54.00
Jan 27 2011 04:08:32:680PM	1110127025	Steve Wukitch	LSN plasma, right gap ~1.2 cm next: decrease right gap to 0.8 cm Load at 27-Jan-2011 16:06:13.00
Jan 27 2011 04:18:26:453PM	1110127026	Steve Wukitch	LSN plasma, right gap ~0.8 cm next: 5.4 T (-150 kA), I=0.77-0.67 MA, nl04~5x10^19 Load at 27-Jan-2011 16:17:11.00
Jan 27 2011 04:32:42:370PM	1110127027	Steve Wukitch	LSN plasma, right gap ~0.5 cm at 1 s, 5.4 T next: tweak gap a bit with RCUR for larger gap Load at 27-Jan-2011 16:32:17.00
Jan 27 2011 04:46:42:683PM	1110127028	Steve Wukitch	LSN plasma, right gap ~1 cm at 1 s, 5.4 T next: reload 025 and increase density to 1x10^20 at 1 s. Load at 27-Jan-2011 16:45:39.00
Jan 27 2011 04:57:24:090PM	1110127029	Steve Wukitch	LSN plasma, right gap ~1.2 cm at 1 s, 3.6 T, nl04~0.9 next: decrease right gap, Ip to 0.705 MA Load at 27-Jan-2011 16:56:08.00
Jan 27 2011 05:06:57:407PM	1110127030	Steve Wukitch	LSN plasma - ohmic H-mode End of run

Engineering Operator Comments
Shot	Time	Type	Status	Comment
1	09:55:46:760AM	Plasma	Ok
2	10:18:45:303AM	Plasma	Ok
3	10:33:16:973AM	Plasma	Ok
4	10:46:40:047AM	Plasma	Ok
5	11:16:05:950AM	Plasma	Ok
6	11:29:31:087AM	Plasma	Ok
7	11:43:31:093AM	Plasma	Ok
8	11:56:31:023AM	Plasma	Ok
9	12:11:13:030PM	Plasma	Ok
10	12:23:54:957PM	Plasma	Ok
11	12:37:53:700PM	Plasma	Ok
12	12:51:24:527PM	Plasma	Ok
13	01:06:02:410PM	Plasma	Ok
14	01:22:08:497PM	Plasma	Ok
15	01:38:47:273PM	Plasma	Ok
16	01:52:12:453PM	Plasma	Ok
17	02:05:25:270PM	Plasma	Ok
18	02:18:51:600PM	Plasma	Ok
19	02:31:24:017PM	Plasma	Ok
20	02:44:57:677PM	Plasma	Ok
21	02:58:42:653PM	Plasma	Ok
22	03:15:57:653PM	Plasma	Ok
23	03:29:39:040PM	Plasma	Bad	Oh commfailure
24	03:43:38:777PM	Plasma	Ok
25	03:56:11:417PM	Plasma	Ok
26	04:08:43:287PM	Plasma	Ok
27	04:21:05:187PM	Plasma	Ok
28	04:35:32:557PM	Plasma	Ok
29	04:48:51:313PM	Plasma	Ok
30	05:01:31:567PM	Plasma	Ok