Alcator C-Mod Run 1100311 Information

Miniproposals

Miniproposal: 579

Date Filed: 9/3/2009

Title: Characterization and optimization of I-mode

First Author: Dennis Whyte

Session Leader: Dennis Whyte (shots 1-25)

Operators
Session leader(s):	Dennis Whyte
Physics operator(s):	Ron Parker
Engineering operator(s):	Bill Parkin,Bill Byford,Gary Dekow

Engineering Operator Run Comment
MP: 579 Characterization and optimization of I-mode

Session Leader Plans

Entered: Mar 11 2010 08:51:09:460AM

Author: Dennis Whyte

Characterization and Optimization of I-mode
----------------------------------

Day 4: Shape Scan & ~8 Tesla

The purpose of these experiments is to characterize the necessary parameters to obtain I-mode while documenting I-mode plasma characteristics and optimizing I-mode towards its application in Alcator C-Mod for high confinement at low density.

This day will be split into two parts

Part 1) Shaping sensitivity at ~5.6 T & Check I-mode /w seeding
Starting Reference shot: 1091016033 (1.2 MA, 5.6 T)

Part 2) I-mode at 8 Tesla
Starting Reference shot: 1100210008 (1MA, 8 T)

Cryopump ON
Toroidal Field: 5.0 - 8 T (clockwise)
Plasma Current: 0.8 - 1.5 MA
Working Gas Species: D2
Density: Target NL04 densities from 0.5 to 1.5 (1e20)
Boronization Requested: NO
ICRF Power: > 5 MW, Most shots will have 4 steps in RF of 200 ms each.

Diagnostics:
ECE with varying B field
Edge TS with alignment for pedestal/edge as reference shot
Note: DNB is offline so no pedestal diagnosis available from CXRS

Run Plan
-------

Part I Shape Scan at 5.6 Tesla

I.1 Establish I-mode /w impurity seeding
(a concern is that the machine has been running more dirty,
so we need to assure ourselves that we can establish
standard I-mode from last year)
-use #1091016033 reference shot, but remove the upper X-point sweep
(target triangularity ~ 0.7)
- Prf - 4.5 MW
- NL04 ~1e20

a) N2 pressure scan and/or NL04 to optimize RF/plasma cleanliness (~5 shots)

I.2. Increase κ to ~1.7, same triangularity ~ 0.7
Ip = 1.2 MA, Bt = 5.6 T, q95 ~ 3.2, NL04 = 1.0e20,
Prf steps: 4, 4.4, 4.8, 5.2

I.3 Increase κ to ~1.8 (or max.), same triangularity ~ 0.7
Ip = 1.2 MA, Bt = 5.6 T, q95 > 3.2, NL04 = 1.0e20,
Prf steps: 4, 4.4, 4.8, 5.2

I.4 Keep κ at ~1.8 (or max.), increase triangularity to 0.8
Ip = 1.2 MA, Bt = 5.6 T, q95 > 3.2, NL04 = 1.0e20,
Prf steps: 4, 4.4, 4.8, 5.2

I.5 Same shape: check q95/Ip dependence
Ip - 1.35 MA, Bt = 5.6 T, q95 ~ 3.2, NL04 ~ 1e20
Prf steps: 4, 4.4, 4.8, 5.2

I.6 Reduce κ to ~1.7 (or max.), keep triangularity at 0.8
Ip = 1.2 MA, Bt = 5.6 T, q95 > 3.2, NL04 = 1.0e20,
Prf steps: 4, 4.4, 4.8, 5.2

Part II I-mode at 8 Tesla

Reference shot from Feb. 2010: #1100210008
This shot exhibited I-mode like behaviour (Prad reduction,
QQC). We will use N2 seeding as developed at 5.4 T

The general plan will be to explore optimal density (which was
coarsely scanned in February) since we know both 3He minority heating
and I-mode access are sensitive to density.

We (hopefully) will not be able to get H-modes but we still
want power scans in the shots to diagnose I-mode transitions

II.1 Ip= 1 MA, Bt= 7.8 T, q95 ~5.3 (to move heating slightly off-axis)
Prf = 4.5 MW (0.6 - 0.8s), 5 MW (0.8 - 1s), 5.5 (1 - 1.3s)
a) NL04 = 0.5e20
b) NL04 = 0.6e20
c) NL04 = 0.7e20
d) NL04 = 0.8e20

II.2 Based on results of II.1 we will pick optimal density
and scan q95/Ip,
Prf = 4.5 MW (0.6 - 0.8s), 5 MW (0.8 - 1s), 5.5 (1 - 1.3s)
a) Ip = 1.15 MA, q95 ~ 4.6
b) Ip = 1.3 MA, q95 ~ 4
c) Ip= 1.45 MA, q95 ~ 3.6

Physics Operators Plans

Entered: Mar 10 2010 05:03:35:647PM

Author: Ron Parker

Physop plan and Engineering Setup for Thursday, Mar 11, 2010

MP: 579 Characterization and optimization of I-mode

Session Leader D. Whyte
Physics Operator: R. Parker

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

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

Run begins at 09:00 and ends at 17:00

Cryopump required for all shots

Power systems as on: 1091016033

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 0.5 psi Ar and 9.5 psi N2 Hybrid ENABLED (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 Hybrid DISABLED

Enable gatevalves and shutters: ECE, VUV, HiREX Sr, B-spectrometer, Z-bolo

Torvac gatevalve toggle (yes/no): no

Boronization(yes/no): no
Overnight ECDC (yes/no): yes
ICRF(yes/no): Yes, full power
LH(yes/no): no
Cryopump (yes/no): Yes

Vessel temperature: 35/35/35

Physop plan: See SL Plan

Session Leader Summaries

Entered: Mar 11 2010 05:11:45:987PM

Author: Dennis Whyte

An interesting but challenging day.

I-modes showed up right away in Part I at 5.6 Tesla
Shot 3 particularly stands out as a great example
of LI transition and then an IL transition.. despite
other parameters staying constant throughout.
Shot 4 had an I-mode that kept evolving, i.e. the stored
energy, edge Te, neutrons kept increasing throughout
despite again other parameters including heating being
very constant.
Should be very interesting to examine these for profile effects.

We were successful at heating 8 T shots. While these
did not trigger H-mode at full power (5 MW), neither did
this triggered I-mode, although we were certainly at high q95.
Also we found good N2 puffing and density (NL04 ~ 0.7) regimes
at 8 Tesla.

Reflectometry got lots of great data. There was a very
high frequency broad feature showing up

However the main challenge of today was battling the
frequent injections. Our experience today points strongly at the
upper divertor since moving strikepoint around definitely had
strong effect. The corner is certainly suspect in this.

Physics Operator Summaries

Entered: Mar 11 2010 05:06:52:183PM

Author: Ron Parker

Machine ran OK at 5.4 and 7.75 T, but many disruptions. The disruptions appeared to be associated with the position of the upper strike point. Moving it on the inner wall was generally bad, moving it onto the upper wall of the vessel was generally better. Sweeping also seemed to help. N2 was injected to help the performance of the ICRH, which was generally good.

There were no engineering or data system problems in this run.

Scorecard: 25 attempts at plasma, 0 fizzles, 0 duds

11 Disruptions before rampdown, 4 disruptions during rampdown, 10 full length

Session Leader Comments

Mar 11 2010 10:25:40:973AM 1100311001 Dennis Whyte Density increased with RF power
Got brief I-modes based on edge ECE followed by brief H-modes
(got 3 H-modes)
Just to need to clean this up more

Mar 11 2010 10:26:15:600AM 1100311003 Dennis Whyte Put the X-point jog in again to help
avoid the injection (upper divertor heating)

NL04 constant at 1e20

No Mo injection, low radiate power (N2 puffing seems
to be working very well)

Clear I-mode transition at 0.95 seconds, then
very constant I=mode up to 1.3 seconds
(H98~0.9)

A very interesting back transition to L-mode
at 1.35 seconds..the edge Te changes with subsequent
slower degradation of core. Not sure what caused this transition
since everything seems quite constant. Possible culprits are
slowly increasing (but low) Prad and the triangularity is
slowly evolving for strike point sweep.

Mar 11 2010 10:26:51:537AM 1100311004 Dennis Whyte I-mode transition again.

This I-mode is wild. Stored energy, neutrons, edge Te
keep increasing throughoug the I-mode despite
constant PRf? Should examine profiles of this.

Get back transition from an RF trip

Mar 11 2010 10:24:20:610AM 1100311005 Dennis Whyte Increased N2 pressure to 15 psi

Cleaner RF, Prad, so N2 seems to work very well

but no I-mode!

It looks like we're just below the threshold, and
we are seeing (as usual) a complex interplay between the
seeding and Rf power.

Increase power to see I-mode on next shot

Mar 11 2010 10:32:40:073AM 1100311006 Dennis Whyte I-mode at 1.34 with 4.5 MW RF

Late I-mode transition in this, probably from
the triangularity jog we have in to keep upper
divertor from overheating... my guess right now
is that the problem was not the upper divertor and
the N2 seeding seems to be working, so we'll take the
jog out.

The I-mode is starting to look very good (1e14 n/s) by
end of flattop. Interesting that the I-mode seems to
last into rampdown and we get ELMs.

Mar 11 2010 10:59:41:670AM 1100311007 Dennis Whyte Started to used waveform control on the N2 puffing

Late I-mode transition at 1.35 seconds. Not sure
if this is from decreasing the N2 puffing later or
from the X-point jog

Mar 11 2010 11:15:16:437AM 1100311008 Dennis Whyte Took out the X-point jog and got lots of injections.

The culprit may be moving the innerstrikepoint to
the corner, since this coincides with the first injection

Move X-point out for next shot

Mar 11 2010 11:16:59:987AM 1100311009 Dennis Whyte disruption-inducing injection.
Again this coincided exactly with the time that
the ISP hits the corner.

Mar 11 2010 11:34:23:740AM 1100311010 Dennis Whyte Large injection, but plasma recovered (partially)
Again correlating to the ISP at the corner

Let's move the ISP to the inner wall

Mar 11 2010 12:39:11:017PM 1100311010 Dennis Whyte Large injection, but plasma recovered (partially)
Again correlating to the ISP at the corner

Let's move the ISP to the inner wall

Mar 11 2010 12:39:06:690PM 1100311012 Dennis Whyte Injection

Mar 11 2010 12:40:05:190PM 1100311013 Dennis Whyte Tried to move ISP way over, disrupted

I think we've found out we cannot place ISP anywhere
near the inner wall (and therefore we cannot really
do the shaping study we wanted to do). Apparently we
got W injections!

Mar 11 2010 12:46:36:870PM 1100311014 Dennis Whyte Back to the jog

And it worked.

Very constant RF, Prad and a late I-mode transition
at 1.3 s.

I think this result precludes our shaping study, we just
have to find a way of sweeping that the divertor likes
best

Mar 11 2010 12:51:40:720PM 1100311015 Dennis Whyte Using jog

Increased power to 5 MW to see if we could get I-mode earlier.

injection terminated shot at 1.45 s (guess what ISP near inner wall again!)

I-mode transition late (1.3 s). This is frustrating because
it looks like triangularity affects the I-mode access but
we have to sweep tri. and X-point to avoid injections.

Mar 11 2010 01:35:51:490PM 1100311017 Dennis Whyte First 8 Tesla shot

NL04=0.5

No H-mode or I-mode

Based on our previous experience this is too low
a density to get I-mode.

Will start the density scan now.

Mar 11 2010 02:19:22:663PM 1100311018 Dennis Whyte NL04=0.6

Moved RF heating ramp to earlier

No H-mode

This is a toasty shot (1e14 n/s) but would not say this
is I-mode: no obvious Te pedestal or transition.
Yet reflectometry sees some very broad feature.

Mar 11 2010 02:59:18:193PM 1100311019 Dennis Whyte NL04=0.7

Early injection
RF tripped so wimpy power

Mar 11 2010 03:04:11:810PM 1100311020 Dennis Whyte NL04=0.7

Early injection and injection.
Will slow down the power injection ramp to
avoid problems when ISP is near the corner.

Mar 11 2010 03:30:55:760PM 1100311021 Dennis Whyte NL04=0.7

Good shot up to the disruption caused by an injection

Got steady RF power at 4.5 MW (about the limit today), low radiated power, steady
density but no I-mode, steady neutron rate. So this looks like the optimal density

Will introduce a jog in the Xpt to avoid injection (presumed cause
of injection since everything fine up to 1.1 second)

Will start Ip scan with this density

Mar 11 2010 03:45:39:107PM 1100311022 Dennis Whyte NL04=0.7
Ip = 1.2 MA

Decent shot until injection start at 0.8
First injection are tungsten?!
Second set of injection are Mo.

Despite this got 1e14 n/s

Have to figure out how to avoid injections
Try more N2 injection

Mar 11 2010 04:44:13:627PM 1100311024 Dennis Whyte NL04=0.7
Ip = 1.2 MA

Moved X-point further out. Decent performance (constant
1.15e14 n/s) but higher stead Prad too.

No H-mode, No I-mode.

An injection disrupted plasma at 1.15 s.

Mar 11 2010 05:02:00:787PM 1100311025 Dennis Whyte NL04=0.7
Ip = 1.4 MA

Disrupted early at 0.7 s before we even go to full power

Perhaps coincidence but got a disruption when
the ISP hit the corner

Physics Operator Comments

Mar 11 2010 09:13:56:797AM 1100311001 Ron Parker First shot disrupted, not surprising considering the requested N2 puff

Not too hopeful for next shot

Mar 11 2010 11:14:24:810AM 1100311002 Ron Parker Good news: It started up; Bad news: it disrupted again

Mar 11 2010 11:15:12:263AM 1100311002 Ron Parker For shot 3, we are putting the jog back into RXU

Mar 11 2010 11:15:44:813AM 1100311003 Ron Parker Shot 3 went full length

Mar 11 2010 09:58:22:177AM 1100311004 Ron Parker Shot 4 ran full length.

Next: Add 5 ms more fill gas to mitigate runaways

Mar 11 2010 10:29:54:057AM 1100311005 Ron Parker Shot 5 ran until 1.5, disrupted during rampdown, hards were down

Mar 11 2010 10:27:44:913AM 1100311006 Ron Parker Shot 6 ran full length, lots of neuts toward end of shot

Next: We are going to chop N2 puff, Full on 0.5 - 1.2, ramp down from 1.2 - 1.5 s

Mar 11 2010 10:37:01:207AM 1100311007 Ron Parker Shot 7 ran full length, hards up again

Next: Take out RXU jog

Mar 11 2010 11:04:26:877AM 1100311008 Ron Parker Shot 8 ran full length, not very pretty

Next: Move upper strike point away from inner wall

Mar 11 2010 11:13:09:280AM 1100311009 Ron Parker Shot disrupted @ 1s. Strkie point still seems to move to upper inner corner

Next: Move SP out further, also add a little more PG 3 gas near breakdown

Mar 11 2010 11:27:43:357AM 1100311010 Ron Parker Shot 10 ran full length, no runaways

Mar 11 2010 11:41:28:873AM 1100311011 Ron Parker Shot 11 disrupted, inner strike seems to be still in corner.

Next: Move strike point out further

Mar 11 2010 11:58:55:690AM 1100311012 Ron Parker Shot 12 disrupted again, strike point seems to want to reside in corner even with further decreases in RXU

Next: Move RXU in ~ 1.5 cm

Mar 11 2010 12:14:54:973PM 1100311013 Ron Parker Shot 13 disrupted, even though the upper inner strike point was on the inside wall.

So we'll give up on moving the strike inside, and go back to the jog, shot 7.

Mar 11 2010 12:32:41:383PM 1100311014 Ron Parker Shot 14 made it to rampdown, although it disrupted there, so it seems best to keep strike point off inner wall.

Mar 11 2010 12:45:41:353PM 1100311015 Ron Parker Shot 15 disrupted. but made it to 1.4 s

Next: Keep sweep moving toward outside, keeping strike off corner.

Mar 11 2010 01:38:14:773PM 1100311016 Ron Parker Shot 16 ran full length

Mar 11 2010 01:44:15:000PM 1100311017 Ron Parker Shot 17 was a good, full length ~8T shot

Next: Increase density to 6e19 m-2, He3 pulse to 125 ms.

Mar 11 2010 02:01:48:737PM 1100311018 Ron Parker Shot 18 ran full lenght, a little ratty on the current rise

Neuts almost 1e14

Next: nl04=7e19

Mar 11 2010 02:30:53:537PM 1100311019 Ron Parker Shot 19 ran full length but RF tripped, so we'll repeat

Mar 11 2010 02:49:39:073PM 1100311020 Ron Parker Disruption at 0.8 s.

Mar 11 2010 03:22:40:873PM 1100311021 Ron Parker Shot 21 made it to 1.14 s, but still disrupted

Next: Sweep upper X-point inwards 1.5 cm, go to 1.2 MA.

Mar 11 2010 03:44:21:870PM 1100311022 Ron Parker Shot 22 full length for flattop, disrupted during rampdown.

Next: Increase N2 puffing to 100 V (from 70)

Mar 11 2010 04:19:37:287PM 1100311023 Ron Parker Shot 23 disrupted @ 0.83 s.

Next: Move upper strike point onto top (off of inner wall)

Mar 11 2010 04:43:08:763PM 1100311024 Ron Parker Shot ran almost to full length on flat top. Neuts ~ 1.1e14

Next: 1.4 MA, move ZXU up 1.5 cm, move RXU out 1 cm

Mar 11 2010 05:07:54:747PM 1100311025 Ron Parker Shot 25 disrupted early, ~ .7 s

Engineering Operator Comments

Shot Time Type Status Comment

1 09:00:17:250AM Plasma Ok

2 09:15:46:770AM Plasma Ok

3 09:29:00:970AM Plasma Ok

4 09:43:57:177AM Plasma Ok

5 09:59:50:757AM Plasma Ok

6 10:14:32:930AM Plasma Ok

7 10:29:59:823AM Plasma Ok

8 10:48:10:220AM Plasma Ok

9 11:02:56:593AM Plasma Ok

10 11:16:49:610AM Plasma Ok

11 11:32:10:177AM Plasma Ok

12 11:49:08:523AM Plasma Ok

13 12:05:11:727PM Plasma Ok

14 12:19:07:730PM Plasma Ok

15 12:38:54:300PM Plasma Ok

16 12:52:15:127PM Plasma Ok

17 01:21:40:677PM Plasma Ok

18 01:48:57:707PM Plasma Ok

19 02:20:13:587PM Plasma Ok

20 02:46:10:447PM Plasma Ok

21 03:10:34:067PM Plasma Ok

22 03:33:28:430PM Plasma Ok

23 04:01:07:687PM Plasma Ok

24 04:29:17:687PM Plasma Ok

25 04:56:58:127PM Plasma Ok

System Availability

Mar 11 2010 08:59:57:220AM

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 7 horizontal views spread out R_maj=[0.72-0.9m], 3 cm over the tokamak midplane (beam) Jul 09 2009 05:12PM (bespam) Bill Rowan Beam Emission Spectroscopy bespam,liao,rowan
Bolometers yes 2pi (diode+foil), AXA, AXJ, WB3AX, WB4AX, LEDGE-AX working fine. MID-FOILS working fine. The LEDGE/DIV foils still need calibrations applied Aug 27 2009 09:09AM (mlreinke) Matt Reinke Bolometers hutch,mlreinke
Boronization yes Nov 13 2009 06:37AM (dekow) Jim Irby Boronization dekow,irby
CNPA no Single channel CNPA available as of 12/1707 Jun 10 2009 10:22AM (twf) Ron Parker Compact Neutral Analyzer parker
Cryopump - Upper Divertor yes Operational Nov 09 2009 09:12AM (irby) Brian LaBombard Upper Divertor Cryopump irby,labombard
CXRS yes The wide-view toroidal array was installed, spatially and absolutely calibrated. There are 7 toroidal chords intersect the beam at the major_R_range=[74.2:83.6]cm. Spatial resolution: 1.2 cm. The F-top wide-view poloidal array was installed and spatially calibrated. There are 19 chords intersect the beam at the major_R_range=[0.65:0.9.]m. Spatial resolution: 1.22 cm. Jul 09 2009 05:16PM (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 and operating; not yet calibrated Jul 14 2009 02:22PM (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 Nov 09 2009 09:13AM (irby) Jim Irby 2.45 GHz, 3 kW, discharge cleaning system dekow,irby,pfeiffer
FRC-ECE yes All channels working and calibrated. Feb 02 2010 09:56AM (phillips) Perry Phillips Heterodyne ECE-32 channels phillips
G-Side Ratiomatic yes Gauge installed. Controller repaired. Aug 23 2009 10:36PM (toland) Brian LaBombard G-side ratiomatic ionization gauge labombard,toland
Glow Discharge no 6/10/09: Paddles meggered at 1000 v to machine ground (>300 Mohm) prior to closing the vacuum chamber. Plugs for Power Supply and Controls Unplugged and Red Tagged, Safe for In-Vessel Access Jun 10 2009 01:47PM (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. Jul 28 2009 04:23PM (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 poses no safety hazard for people working around the machine Jun 18 2009 01:04PM (marmar) Earl Marmar H/D Ratio marmar
HEAT yes Oct 27 2009 10:39AM (dekow) Gary Dekow - Machine Heaters - burke,dekow
Hirex Jr yes Hirex-Jr has been installed and tested Jun 17 2009 11:54AM (rice) John Rice High Resolution X-Ray ince,rice
Hirex Sr yes currently only one detector is operational, off-axis He-like argon emission Jul 14 2009 10:01AM (rice) John Rice High Resolution X-Ray ince,rice
HXR no In safe mode (high voltage turned off) May 27 2008 09:19PM (schmidt) Ron Parker Hard X-Ray Array parker,schmidt
ICRF D-Antenna yes operational at 80 MHz Jul 21 2009 04:49PM (wukitch) Steve Wukitch D-port antenna wukitch,ylin
ICRF E-Antenna yes antenna and FFT operational Jul 21 2009 04:49PM (wukitch) Steve Wukitch E-port antenna wukitch,ylin
ICRF J-Antenna yes available at 80 MHz and [0,pi,0,pi] phasing Sep 04 2009 10:01AM (wukitch) Steve Wukitch J-port antenna wukitch,ylin
Laser Blow-Off yes Requires some advance notice for laser start-up Oct 16 2009 12:46PM (g) Martin Greenwald Impurity Injection System g,nthoward
Lower Hybrid no Breaker locked and tagged out. Waveguide disassembly started. Open Waveguides have been shorted. May 28 2008 09:47AM (dterry) Ron Parker Lower Hybrid dterry,parker,wallaceg
LPI no Beam line removed May 30 2008 02:09PM (bose) Earl Marmar Lithium Pellet Injector bose,marmar
Ly-alpha yes Midplane, WB4-LY, LEDGE-LY all collecting data. WB1-LY not attached. Aug 27 2009 09:10AM (mlreinke) Matt Reinke Lyman alpha cameras labombard,mlreinke
McPherson yes Operating normally Aug 27 2009 09:10AM (mlreinke) Jim Terry VUV Spectrometer mlreinke,terry
Michelson yes Operational. Recalibrated 7/27/09. Jul 28 2009 04:22PM (hubbard) Amanda Hubbard ECE Te Profiles hubbard,schmidt
MKS yes Gauges are on. B-bottom is not operating - bad sensor head? Jul 14 2009 09:12PM (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 Neutron detectors are calibrated and ready to go. Voltages will be turned on prior to first plasma. Jun 10 2009 10:35AM (fiore) Catherine Fiore Neutron Detectors fiore
Neuts and Hards yes Power back on morning of 11/09 before run Nov 09 2009 09:10AM (irby) Jim Irby X-Ray/Neutron Detector at K-Hor irby
NINJA no Capillaries were tested in-vessel. Plenum has a leak and needs fixing. Jul 14 2009 09:14PM (labombard) Brian LaBombard NINJA gas puff labombard,terry
PCI yes Operational. Nov 12 2009 02:36PM (ntsujii) Miklos Porkolab Phase Contrast Imaging arai,ennever,ntsujii,porkolab
Penning Gauges yes High voltage is enabled (on during INIT, off during RECOOL). Jun 30 2009 09:42PM (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 Checked and Operational as of 06/18/09 Jun 19 2009 08:04AM (irby) Gary Dekow feeds all the other supplies cochran,dekow,dterry,irby
Power - PEI yes Nov 13 2009 06:38AM (dekow) Gary Dekow PEI System cochran,dekow,dterry,irby
Power - TMX yes Checked out and ready for Magnet Tests as of 06/18/09 Jun 19 2009 08:07AM (irby) Gary Dekow Ef2s,. EFCs and A-Coils byford,cochran,dekow,dterry,irby
Power Systems yes Checked out and ready for Magnet Tests as of 06/18/09 Jun 19 2009 08:07AM (irby) Jim Irby C-Mod Magnet Supplies byford,cochran,dekow,dterry,irby
Probe Array - ISD yes Array is operational with new cPCI data system. Probe 14 has open circuit. Jul 14 2009 09:17PM (labombard) Brian Labombard Inner Lower Divertor Probe Array labombard
Probe Array - LH no LH launcher not installed. Cables are unplugged at the A-port rack. Jul 14 2009 09:16PM (labombard) Brian LaBombard Lower Hybrid Probe Array labombard
Probe Array - OSD yes Array is operational with new cPCI data system. Jul 14 2009 09:16PM (labombard) Brian LaBombard Outer Lower Divertor Probe Array labombard
Probe Array - UDIV yes Array is operational with new cPCI data system. Probe 13 has a bad cable (open). Jul 14 2009 09:17PM (labombard) Brian LaBombard Upper Divertor Probe Array labombard
Reflectometer yes Since 1100120000 the system is operational except for channel 110 which is not installed Jan 20 2010 09:17AM (dominguez) Earl Marmar Reflectometer dominguez,marmar
Scanning Probe - ASP yes Probe is operational. Needs plasma conditioning. Jul 14 2009 09:18PM (labombard) Brian LaBombard A-Port Scanning Probe labombard
Scanning Probe - FSP yes Probe is operational. Needs plasma conditioning. Jul 14 2009 09:18PM (labombard) Brian LaBombard F-Port Scanning Probe labombard
Scanning Probe - WASP yes System connected to A-port WASP. Needs plasma testing. Jul 14 2009 09:19PM (labombard) Brian LaBombard Inner Wall Scanning Probe labombard,nsmick
Sparker yes Sparker back in operation before 11/09 run Nov 09 2009 09:11AM (irby) Jim Irby Field Emission Preionization for C-Mod dekow,irby,parkin
TCI yes System restarted and aligned. Several chords available including NL04. Density Feedback available. Ready for plasma. Jun 18 2009 09:15AM (murray) Jim Irby Two-Color Interferometer irby,murray
TS - Core yes 2 lasers working. 15 spatial channels operational. Calibrated Oct 13 2009 07:49PM (yma) Jerry Hughes Core Thomson scattering jwhughes,yma,zhang
TS - Edge yes Operational, and calibrated. Oct 11 2009 03:01PM (jwhughes) Jerry Hughes Millimeter resolution edge Thomson scattering jwhughes,yma,zhang
Vispec no 350 and 670 nm, 4 spatial channels Nov 28 2007 09:58AM (agraf) Alex Graf Visible Spectrometer agraf
XTOMO yes Operating normally Aug 27 2009 09:10AM (mlreinke) Bob Granetz X-Ray Tomography granetz,mlreinke

Mar 11 2010 04:00:47:543PM

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 7 horizontal views spread out R_maj=[0.72-0.9m], 3 cm over the tokamak midplane (beam) Jul 09 2009 05:12PM (bespam) Bill Rowan Beam Emission Spectroscopy bespam,liao,rowan
Bolometers yes 2pi (diode+foil), AXA, AXJ, WB3AX, WB4AX, LEDGE-AX working fine. MID-FOILS working fine. The LEDGE/DIV foils still need calibrations applied Aug 27 2009 09:09AM (mlreinke) Matt Reinke Bolometers hutch,mlreinke
Boronization yes Nov 13 2009 06:37AM (dekow) Jim Irby Boronization dekow,irby
CNPA no Single channel CNPA available as of 12/1707 Jun 10 2009 10:22AM (twf) Ron Parker Compact Neutral Analyzer parker
Cryopump - Upper Divertor yes Operational Nov 09 2009 09:12AM (irby) Brian LaBombard Upper Divertor Cryopump irby,labombard
CXRS yes The wide-view toroidal array was installed, spatially and absolutely calibrated. There are 7 toroidal chords intersect the beam at the major_R_range=[74.2:83.6]cm. Spatial resolution: 1.2 cm. The F-top wide-view poloidal array was installed and spatially calibrated. There are 19 chords intersect the beam at the major_R_range=[0.65:0.9.]m. Spatial resolution: 1.22 cm. Jul 09 2009 05:16PM (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 and operating; not yet calibrated Jul 14 2009 02:22PM (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 Nov 09 2009 09:13AM (irby) Jim Irby 2.45 GHz, 3 kW, discharge cleaning system dekow,irby,pfeiffer
FRC-ECE yes All channels working and calibrated. Feb 02 2010 09:56AM (phillips) Perry Phillips Heterodyne ECE-32 channels phillips
G-Side Ratiomatic yes Gauge installed. Controller repaired. Aug 23 2009 10:36PM (toland) Brian LaBombard G-side ratiomatic ionization gauge labombard,toland
Glow Discharge no 6/10/09: Paddles meggered at 1000 v to machine ground (>300 Mohm) prior to closing the vacuum chamber. Plugs for Power Supply and Controls Unplugged and Red Tagged, Safe for In-Vessel Access Jun 10 2009 01:47PM (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. Jul 28 2009 04:23PM (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 poses no safety hazard for people working around the machine Jun 18 2009 01:04PM (marmar) Earl Marmar H/D Ratio marmar
HEAT yes Oct 27 2009 10:39AM (dekow) Gary Dekow - Machine Heaters - burke,dekow
Hirex Jr yes Hirex-Jr has been installed and tested Jun 17 2009 11:54AM (rice) John Rice High Resolution X-Ray ince,rice
Hirex Sr yes currently only one detector is operational, off-axis He-like argon emission Jul 14 2009 10:01AM (rice) John Rice High Resolution X-Ray ince,rice
HXR no In safe mode (high voltage turned off) May 27 2008 09:19PM (schmidt) Ron Parker Hard X-Ray Array parker,schmidt
ICRF D-Antenna yes operational at 80 MHz Jul 21 2009 04:49PM (wukitch) Steve Wukitch D-port antenna wukitch,ylin
ICRF E-Antenna yes antenna and FFT operational Jul 21 2009 04:49PM (wukitch) Steve Wukitch E-port antenna wukitch,ylin
ICRF J-Antenna yes available at 80 MHz and [0,pi,0,pi] phasing Sep 04 2009 10:01AM (wukitch) Steve Wukitch J-port antenna wukitch,ylin
Laser Blow-Off yes Requires some advance notice for laser start-up Oct 16 2009 12:46PM (g) Martin Greenwald Impurity Injection System g,nthoward
Lower Hybrid no Breaker locked and tagged out. Waveguide disassembly started. Open Waveguides have been shorted. May 28 2008 09:47AM (dterry) Ron Parker Lower Hybrid dterry,parker,wallaceg
LPI no Beam line removed May 30 2008 02:09PM (bose) Earl Marmar Lithium Pellet Injector bose,marmar
Ly-alpha yes Midplane, WB4-LY, LEDGE-LY all collecting data. WB1-LY not attached. Aug 27 2009 09:10AM (mlreinke) Matt Reinke Lyman alpha cameras labombard,mlreinke
McPherson yes Operating normally Aug 27 2009 09:10AM (mlreinke) Jim Terry VUV Spectrometer mlreinke,terry
Michelson yes Operational. Recalibrated 7/27/09. Jul 28 2009 04:22PM (hubbard) Amanda Hubbard ECE Te Profiles hubbard,schmidt
MKS yes Gauges are on. B-bottom is not operating - bad sensor head? Jul 14 2009 09:12PM (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 Neutron detectors are calibrated and ready to go. Voltages will be turned on prior to first plasma. Jun 10 2009 10:35AM (fiore) Catherine Fiore Neutron Detectors fiore
Neuts and Hards yes Power back on morning of 11/09 before run Nov 09 2009 09:10AM (irby) Jim Irby X-Ray/Neutron Detector at K-Hor irby
NINJA no Capillaries were tested in-vessel. Plenum has a leak and needs fixing. Jul 14 2009 09:14PM (labombard) Brian LaBombard NINJA gas puff labombard,terry
PCI yes Operational. Nov 12 2009 02:36PM (ntsujii) Miklos Porkolab Phase Contrast Imaging arai,ennever,ntsujii,porkolab
Penning Gauges yes High voltage is enabled (on during INIT, off during RECOOL). Jun 30 2009 09:42PM (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 Checked and Operational as of 06/18/09 Jun 19 2009 08:04AM (irby) Gary Dekow feeds all the other supplies cochran,dekow,dterry,irby
Power - PEI yes Nov 13 2009 06:38AM (dekow) Gary Dekow PEI System cochran,dekow,dterry,irby
Power - TMX yes Checked out and ready for Magnet Tests as of 06/18/09 Jun 19 2009 08:07AM (irby) Gary Dekow Ef2s,. EFCs and A-Coils byford,cochran,dekow,dterry,irby
Power Systems yes Checked out and ready for Magnet Tests as of 06/18/09 Jun 19 2009 08:07AM (irby) Jim Irby C-Mod Magnet Supplies byford,cochran,dekow,dterry,irby
Probe Array - ISD yes Array is operational with new cPCI data system. Probe 14 has open circuit. Jul 14 2009 09:17PM (labombard) Brian Labombard Inner Lower Divertor Probe Array labombard
Probe Array - LH no LH launcher not installed. Cables are unplugged at the A-port rack. Jul 14 2009 09:16PM (labombard) Brian LaBombard Lower Hybrid Probe Array labombard
Probe Array - OSD yes Array is operational with new cPCI data system. Jul 14 2009 09:16PM (labombard) Brian LaBombard Outer Lower Divertor Probe Array labombard
Probe Array - UDIV yes Array is operational with new cPCI data system. Probe 13 has a bad cable (open). Jul 14 2009 09:17PM (labombard) Brian LaBombard Upper Divertor Probe Array labombard
Reflectometer yes Since 1100120000 the system is operational except for channel 110 which is not installed Jan 20 2010 09:17AM (dominguez) Earl Marmar Reflectometer dominguez,marmar
Scanning Probe - ASP yes Probe is operational. Needs plasma conditioning. Jul 14 2009 09:18PM (labombard) Brian LaBombard A-Port Scanning Probe labombard
Scanning Probe - FSP yes Probe is operational. Needs plasma conditioning. Jul 14 2009 09:18PM (labombard) Brian LaBombard F-Port Scanning Probe labombard
Scanning Probe - WASP yes System connected to A-port WASP. Needs plasma testing. Jul 14 2009 09:19PM (labombard) Brian LaBombard Inner Wall Scanning Probe labombard,nsmick
Sparker yes Sparker back in operation before 11/09 run Nov 09 2009 09:11AM (irby) Jim Irby Field Emission Preionization for C-Mod dekow,irby,parkin
TCI yes System restarted and aligned. Several chords available including NL04. Density Feedback available. Ready for plasma. Jun 18 2009 09:15AM (murray) Jim Irby Two-Color Interferometer irby,murray
TS - Core yes 2 lasers working. 15 spatial channels operational. Calibrated Oct 13 2009 07:49PM (yma) Jerry Hughes Core Thomson scattering jwhughes,yma,zhang
TS - Edge yes Operational, and calibrated. Oct 11 2009 03:01PM (jwhughes) Jerry Hughes Millimeter resolution edge Thomson scattering jwhughes,yma,zhang
Vispec no 350 and 670 nm, 4 spatial channels Nov 28 2007 09:58AM (agraf) Alex Graf Visible Spectrometer agraf
XTOMO yes Operating normally Aug 27 2009 09:10AM (mlreinke) Bob Granetz X-Ray Tomography granetz,mlreinke

Session Leader Comments
Mar 11 2010 10:25:40:973AM	1100311001	Dennis Whyte	Density increased with RF power Got brief I-modes based on edge ECE followed by brief H-modes (got 3 H-modes) Just to need to clean this up more
Mar 11 2010 10:26:15:600AM	1100311003	Dennis Whyte	Put the X-point jog in again to help avoid the injection (upper divertor heating) NL04 constant at 1e20 No Mo injection, low radiate power (N2 puffing seems to be working very well) Clear I-mode transition at 0.95 seconds, then very constant I=mode up to 1.3 seconds (H98~0.9) A very interesting back transition to L-mode at 1.35 seconds..the edge Te changes with subsequent slower degradation of core. Not sure what caused this transition since everything seems quite constant. Possible culprits are slowly increasing (but low) Prad and the triangularity is slowly evolving for strike point sweep.
Mar 11 2010 10:26:51:537AM	1100311004	Dennis Whyte	I-mode transition again. This I-mode is wild. Stored energy, neutrons, edge Te keep increasing throughoug the I-mode despite constant PRf? Should examine profiles of this. Get back transition from an RF trip
Mar 11 2010 10:24:20:610AM	1100311005	Dennis Whyte	Increased N2 pressure to 15 psi Cleaner RF, Prad, so N2 seems to work very well but no I-mode! It looks like we're just below the threshold, and we are seeing (as usual) a complex interplay between the seeding and Rf power. Increase power to see I-mode on next shot
Mar 11 2010 10:32:40:073AM	1100311006	Dennis Whyte	I-mode at 1.34 with 4.5 MW RF Late I-mode transition in this, probably from the triangularity jog we have in to keep upper divertor from overheating... my guess right now is that the problem was not the upper divertor and the N2 seeding seems to be working, so we'll take the jog out. The I-mode is starting to look very good (1e14 n/s) by end of flattop. Interesting that the I-mode seems to last into rampdown and we get ELMs.
Mar 11 2010 10:59:41:670AM	1100311007	Dennis Whyte	Started to used waveform control on the N2 puffing Late I-mode transition at 1.35 seconds. Not sure if this is from decreasing the N2 puffing later or from the X-point jog
Mar 11 2010 11:15:16:437AM	1100311008	Dennis Whyte	Took out the X-point jog and got lots of injections. The culprit may be moving the innerstrikepoint to the corner, since this coincides with the first injection Move X-point out for next shot
Mar 11 2010 11:16:59:987AM	1100311009	Dennis Whyte	disruption-inducing injection. Again this coincided exactly with the time that the ISP hits the corner.
Mar 11 2010 11:34:23:740AM	1100311010	Dennis Whyte	Large injection, but plasma recovered (partially) Again correlating to the ISP at the corner Let's move the ISP to the inner wall
Mar 11 2010 12:39:11:017PM	1100311010	Dennis Whyte	Large injection, but plasma recovered (partially) Again correlating to the ISP at the corner Let's move the ISP to the inner wall
Mar 11 2010 12:39:06:690PM	1100311012	Dennis Whyte	Injection
Mar 11 2010 12:40:05:190PM	1100311013	Dennis Whyte	Tried to move ISP way over, disrupted I think we've found out we cannot place ISP anywhere near the inner wall (and therefore we cannot really do the shaping study we wanted to do). Apparently we got W injections!
Mar 11 2010 12:46:36:870PM	1100311014	Dennis Whyte	Back to the jog And it worked. Very constant RF, Prad and a late I-mode transition at 1.3 s. I think this result precludes our shaping study, we just have to find a way of sweeping that the divertor likes best
Mar 11 2010 12:51:40:720PM	1100311015	Dennis Whyte	Using jog Increased power to 5 MW to see if we could get I-mode earlier. injection terminated shot at 1.45 s (guess what ISP near inner wall again!) I-mode transition late (1.3 s). This is frustrating because it looks like triangularity affects the I-mode access but we have to sweep tri. and X-point to avoid injections.
Mar 11 2010 01:35:51:490PM	1100311017	Dennis Whyte	First 8 Tesla shot NL04=0.5 No H-mode or I-mode Based on our previous experience this is too low a density to get I-mode. Will start the density scan now.
Mar 11 2010 02:19:22:663PM	1100311018	Dennis Whyte	NL04=0.6 Moved RF heating ramp to earlier No H-mode This is a toasty shot (1e14 n/s) but would not say this is I-mode: no obvious Te pedestal or transition. Yet reflectometry sees some very broad feature.
Mar 11 2010 02:59:18:193PM	1100311019	Dennis Whyte	NL04=0.7 Early injection RF tripped so wimpy power
Mar 11 2010 03:04:11:810PM	1100311020	Dennis Whyte	NL04=0.7 Early injection and injection. Will slow down the power injection ramp to avoid problems when ISP is near the corner.
Mar 11 2010 03:30:55:760PM	1100311021	Dennis Whyte	NL04=0.7 Good shot up to the disruption caused by an injection Got steady RF power at 4.5 MW (about the limit today), low radiated power, steady density but no I-mode, steady neutron rate. So this looks like the optimal density Will introduce a jog in the Xpt to avoid injection (presumed cause of injection since everything fine up to 1.1 second) Will start Ip scan with this density
Mar 11 2010 03:45:39:107PM	1100311022	Dennis Whyte	NL04=0.7 Ip = 1.2 MA Decent shot until injection start at 0.8 First injection are tungsten?! Second set of injection are Mo. Despite this got 1e14 n/s Have to figure out how to avoid injections Try more N2 injection
Mar 11 2010 04:44:13:627PM	1100311024	Dennis Whyte	NL04=0.7 Ip = 1.2 MA Moved X-point further out. Decent performance (constant 1.15e14 n/s) but higher stead Prad too. No H-mode, No I-mode. An injection disrupted plasma at 1.15 s.
Mar 11 2010 05:02:00:787PM	1100311025	Dennis Whyte	NL04=0.7 Ip = 1.4 MA Disrupted early at 0.7 s before we even go to full power Perhaps coincidence but got a disruption when the ISP hit the corner

Physics Operator Comments
Mar 11 2010 09:13:56:797AM	1100311001	Ron Parker	First shot disrupted, not surprising considering the requested N2 puff Not too hopeful for next shot
Mar 11 2010 11:14:24:810AM	1100311002	Ron Parker	Good news: It started up; Bad news: it disrupted again
Mar 11 2010 11:15:12:263AM	1100311002	Ron Parker	For shot 3, we are putting the jog back into RXU
Mar 11 2010 11:15:44:813AM	1100311003	Ron Parker	Shot 3 went full length
Mar 11 2010 09:58:22:177AM	1100311004	Ron Parker	Shot 4 ran full length. Next: Add 5 ms more fill gas to mitigate runaways
Mar 11 2010 10:29:54:057AM	1100311005	Ron Parker	Shot 5 ran until 1.5, disrupted during rampdown, hards were down
Mar 11 2010 10:27:44:913AM	1100311006	Ron Parker	Shot 6 ran full length, lots of neuts toward end of shot Next: We are going to chop N2 puff, Full on 0.5 - 1.2, ramp down from 1.2 - 1.5 s
Mar 11 2010 10:37:01:207AM	1100311007	Ron Parker	Shot 7 ran full length, hards up again Next: Take out RXU jog
Mar 11 2010 11:04:26:877AM	1100311008	Ron Parker	Shot 8 ran full length, not very pretty Next: Move upper strike point away from inner wall
Mar 11 2010 11:13:09:280AM	1100311009	Ron Parker	Shot disrupted @ 1s. Strkie point still seems to move to upper inner corner Next: Move SP out further, also add a little more PG 3 gas near breakdown
Mar 11 2010 11:27:43:357AM	1100311010	Ron Parker	Shot 10 ran full length, no runaways
Mar 11 2010 11:41:28:873AM	1100311011	Ron Parker	Shot 11 disrupted, inner strike seems to be still in corner. Next: Move strike point out further
Mar 11 2010 11:58:55:690AM	1100311012	Ron Parker	Shot 12 disrupted again, strike point seems to want to reside in corner even with further decreases in RXU Next: Move RXU in ~ 1.5 cm
Mar 11 2010 12:14:54:973PM	1100311013	Ron Parker	Shot 13 disrupted, even though the upper inner strike point was on the inside wall. So we'll give up on moving the strike inside, and go back to the jog, shot 7.
Mar 11 2010 12:32:41:383PM	1100311014	Ron Parker	Shot 14 made it to rampdown, although it disrupted there, so it seems best to keep strike point off inner wall.
Mar 11 2010 12:45:41:353PM	1100311015	Ron Parker	Shot 15 disrupted. but made it to 1.4 s Next: Keep sweep moving toward outside, keeping strike off corner.
Mar 11 2010 01:38:14:773PM	1100311016	Ron Parker	Shot 16 ran full length
Mar 11 2010 01:44:15:000PM	1100311017	Ron Parker	Shot 17 was a good, full length ~8T shot Next: Increase density to 6e19 m-2, He3 pulse to 125 ms.
Mar 11 2010 02:01:48:737PM	1100311018	Ron Parker	Shot 18 ran full lenght, a little ratty on the current rise Neuts almost 1e14 Next: nl04=7e19
Mar 11 2010 02:30:53:537PM	1100311019	Ron Parker	Shot 19 ran full length but RF tripped, so we'll repeat
Mar 11 2010 02:49:39:073PM	1100311020	Ron Parker	Disruption at 0.8 s.
Mar 11 2010 03:22:40:873PM	1100311021	Ron Parker	Shot 21 made it to 1.14 s, but still disrupted Next: Sweep upper X-point inwards 1.5 cm, go to 1.2 MA.
Mar 11 2010 03:44:21:870PM	1100311022	Ron Parker	Shot 22 full length for flattop, disrupted during rampdown. Next: Increase N2 puffing to 100 V (from 70)
Mar 11 2010 04:19:37:287PM	1100311023	Ron Parker	Shot 23 disrupted @ 0.83 s. Next: Move upper strike point onto top (off of inner wall)
Mar 11 2010 04:43:08:763PM	1100311024	Ron Parker	Shot ran almost to full length on flat top. Neuts ~ 1.1e14 Next: 1.4 MA, move ZXU up 1.5 cm, move RXU out 1 cm
Mar 11 2010 05:07:54:747PM	1100311025	Ron Parker	Shot 25 disrupted early, ~ .7 s

Engineering Operator Comments
Shot	Time	Type	Status	Comment
1	09:00:17:250AM	Plasma	Ok
2	09:15:46:770AM	Plasma	Ok
3	09:29:00:970AM	Plasma	Ok
4	09:43:57:177AM	Plasma	Ok
5	09:59:50:757AM	Plasma	Ok
6	10:14:32:930AM	Plasma	Ok
7	10:29:59:823AM	Plasma	Ok
8	10:48:10:220AM	Plasma	Ok
9	11:02:56:593AM	Plasma	Ok
10	11:16:49:610AM	Plasma	Ok
11	11:32:10:177AM	Plasma	Ok
12	11:49:08:523AM	Plasma	Ok
13	12:05:11:727PM	Plasma	Ok
14	12:19:07:730PM	Plasma	Ok
15	12:38:54:300PM	Plasma	Ok
16	12:52:15:127PM	Plasma	Ok
17	01:21:40:677PM	Plasma	Ok
18	01:48:57:707PM	Plasma	Ok
19	02:20:13:587PM	Plasma	Ok
20	02:46:10:447PM	Plasma	Ok
21	03:10:34:067PM	Plasma	Ok
22	03:33:28:430PM	Plasma	Ok
23	04:01:07:687PM	Plasma	Ok
24	04:29:17:687PM	Plasma	Ok
25	04:56:58:127PM	Plasma	Ok