Alcator C-Mod Run 1080403 Information

Miniproposals

Miniproposal: 489

Date Filed: 4/30/2007

Title: Damping Rate of Toroidal Alfvén Eigenmodes at the Threshold of Stability in the Presence of ICRF He

First Author: Jason Sears

Session Leader: Jason Sears (shots 1-30)

Operators
Session leader(s):	Jason Sears
Physics operator(s):	Jim Irby
Engineering operator(s):	Bill Parkin,Andy Pfeiffer,Gary Dekow

Engineering Operator Run Comment
MP#489 "Damping rate of TAEs near stability threshold with ICRF fast ion

Session Leader Plans

Entered: Apr 2 2008 06:03:35:937PM

Author: Jason Sears

MP#489 "Damping rate of TAEs near stability threshold with ICRF fast ions"

Goal
****
Confirm anomolous stability behavior of TAEs at moderate ICRF power as observed in conditions of 1070605 and 1070626, as opposed to monotonic decrease in damping rate to the point of instability as observed in 1080110. Seek trophy resonances in representative shots. Fill in the frequency range of non-resonant coupling behavior of the Active MHD diagnostic.

Run Preparation
***************
* Prepare cryopump for last couple shots
* Prepare argon for HIREX
* Setup GPC2 gratings for -5.9 T
* Set CNPA aperture to 208, bias voltage to 45V
* Operate DNB during interval: 0.6:1.5
* Operate Thomson
* Observe CXRS for core boron density measurements
* Operate PCI if available
* Enable the dpcs_ftae2 procedure in DPCS
* Turn on Active MHD and set qAE to 1.5, AE_order to 2

Shot Sequence
*************

1-8
Load 1080110012;
Scan RF in 0.5 MW increments from 0.5 to 3. Repeat 2 and 2.5 MW if time permits. If 3MW shot goes into H-mode, postpone to cryopump session at end of run.

9-11
From 1080110012, change right gap to 1.1;
ICRF = 2; 2.5; 3MW

12-14
From 1080110012, change density to nebar=1.4;
ICRF = 2; 2.5; 3MW

15-17
Load 1070626020-like configuration (limited)
ICRF = 2; 2.5; 3MW

18-20
Load 1070626020;
ICRF=2; 2.5; 3 MW
slow Active MHD frequency sweep for high resolution resonance

21-24
Load 1080110012;
ICRF=2; 2.5; 3 MW
slow Active MHD frequency sweep for high resolution resonance
+ 1 ambient coupling, broad sweep shot

25-29
Load 1080110012;
cryopump on
puff argon 1psi 0.3-1.3s to avoid H-mode
ICRF=3.5MW, 4MW, 1xregular sweep, 1xhigh-res sweep
+ 1 ambient coupling, broad sweep shot

Physics Operators Plans

Entered: Apr 3 2008 07:44:53:430AM

Author: Jim Irby

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

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

Power systems as on:1080110012

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 gatevalves and shutters: ECE, VUV, DNB, Z-bolo

Torvac gatevalve toggle (yes/no): no

Boronization(yes/no): no
Overnight ECDC (yes/no): yes
ICRF(yes/no): yes
LH(yes/no): no
DNB(yes/no): yes
Cryopump (yes/no): yes --- later in run --- 1 hour notice required

Vessel temperature: 35/35/35

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

Session Leader Summaries

Entered: Apr 3 2008 05:35:05:603PM

Author: Jason Sears

The run did not confirm anomolous stability behavior as seen in 1070626; rather a monotonic decrease of damping rate was observed as on 1080110, independent of the configuration, density or outer gap differences between those two runs. The difference in observations between those two runs will still have to be explained. Slow frequency sweeps were accomplished in both configurations to achieve 'trophy' resonances. A wide frequency sweep was achieved in diverted conditions but not in the limited config to examine the background antenna coupling to probes.

Early in the run we tried 3MW shots and had two disruptions; therefore we limited RF to 2.5MW until late in the run, when we attempted higher power again. We had a 3MW shot. Then we prepared the cryopump to be used in conjunction with argon to stay out of H-mode. However this cooling process seems to cause some helium leaks and we had a few bad shots. But we ended with a 3.5MW shot.

Bob Granetz did a great job translating the segments from 1070626020 in 10min 2s (counting his encounter with a garbage can on the way to hit the button).

There were MARFEs in the first seven shots before the density request was decreased to 0.6e20. These may influence the TAE behavior and must be considered in analysis.

Goals not achieved from the run plan were 3MW shots in all conditions and 4MW and 4.5MW shots in the diverted configuration.

Shot summary:

Shot result RF_net condition
***********************************************************************
1080403001 no plasma - upper diverted
1080403002 Plasma 0.5 upper diverted
1080403003 Plasma 0.8 upper diverted
1080403004 Fizzle - upper diverted
1080403005 Plasma 1.75 upper diverted
1080403006 Plasma 2.1 upper diverted
1080403007 Plasma 2.5 upper diverted
1080403008 Plasma 1.75 upper diverted
1080403009 disrupt at 1.4s 2.5 upper diverted
1080403010 Plasma 2 upper diverted
1080403011 disrupt at 0.75s 3 upper diverted
1080403012 disrupt at 0.45s 0 upper diverted
1080403013 Plasma 2 rgap=1.1
1080403014 Plasma 2.5 rgap=1.1
1080403015 Plasma 2 rgap=1.1
1080403016 Plasma 2 upper diverted
1080403017 Plasma 2.5 upper diverted
1080403018 Plasma 2.5 upper diverted
1080403019 Plasma 1.5 nl_04=8
1080403020 Plasma 2.5 nl_04=8
1080403021 Plasma 2.5 calibration
1080403022 Plasma 2.5 limited
1080403023 Plasma 2.5 limited
1080403024 Plasma 2.5 limited
1080403025 Plasma 2 limited
1080403026 Disruption - calibration
1080403027 Plasma 3 diverted high power
1080403028 no power - diverted high power
1080403029 disrupt at 0.7s - diverted high power
1080403030 Plasma 3.5 diverted high power

Physics Operator Summaries

Entered: Apr 3 2008 05:28:49:103PM

Author: Jim Irby

The machine ran well today. We ran most of the day with upper divertor
plasmas but also ran inner wall limited almost double null (which Bob
Granetz got set up). Startup was very good with only a couple of
discharges that did not run full length. We had trouble with MARFEs
early in the run. Higher ICRF and a 10% increase in density pretty much
fixed this problem.

Late in the run the cryopump was successfully run again, though it took
several trys and over an hour of work to get it going. We had to run
one no power shot (shot 28) when the pump dumped right before the shot.
Shot 29 was the first shot with the cryopump running. It had early
runaways and died by 0.7 s. I increased the prefill and shot 30 ran
into rampdown with the cryopump and over 3.7 MW of ICRF. So I hope we
are ready for Amanda's run tomorrow. Brian plans to monitor that run
closely. It will be very important to monitor the RGA during tomorrow's run.

Shot 04 was a 50ms, 90 kA "fizzle". Mass49 and other gases pumped away
following this shot (gettering). Neuts/hards saturated from 30 ms on.

Mass49 was generally much lower today than yesterday which was much
better than Tuesday. So the machine is returning to normal.

Session Leader Comments

Apr 3 2008 09:13:58:587AM 1080403001 Jason Sears Configuration: 1080110012-like: nl_04 7e19/m^2; Ip 600 kA; Bt 5.9T; no argon
RFpower: 0.5MW

Result: no plasma, a power supply problem?

Next shot: try again

Apr 3 2008 09:48:34:947AM 1080403002 Jason Sears Configuration: 1080110012-like: nl_04 7e19/m^2; Ip 600 kA; Bt 5.9T; no argon
RFpower: 0.5MW

Result: plasma

Next shot: go to 1MW

Apr 3 2008 09:48:08:117AM 1080403003 Jason Sears Configuration: 1080110012-like: nl_04 7e19/m^2; Ip 600 kA; Bt 5.9T; no argon
RFpower: 1MW

Result: plasma, 0.8MW

Next shot: go to 1.5MW and change cnpa aperture to 206

Apr 3 2008 10:01:03:807AM 1080403004 Jason Sears Configuration: 1080110012-like: nl_04 7e19/m^2; Ip 600 kA; Bt 5.9T; no argon
RFpower: 1.5MW

Result: fizzle

Next shot: try 1.5MW again

Apr 3 2008 10:11:53:367AM 1080403005 Jason Sears Configuration: 1080110012-like: nl_04 7e19/m^2; Ip 600 kA; Bt 5.9T; no argon
RFpower: 1.5MW

Result: plasma, marfing

Next shot: go to 2.0MW

Apr 3 2008 10:57:02:757AM 1080403006 Jason Sears Configuration: 1080110012-like: nl_04 7e19/m^2; Ip 600 kA; Bt 5.9T; no argon
RFpower: 2MW

Result: plasma, marfing

Next shot: go to 2.5MW

Apr 3 2008 11:20:17:977AM 1080403007 Jason Sears Configuration: 1080110012-like: nl_04 7e19/m^2; Ip 600 kA; Bt 5.9T;
RFpower: 2.5MW

Result: plasma, fuzzy RF between 1.5 and 2.5 MW

Next shot: 2.5MW

Apr 3 2008 11:19:05:150AM 1080403008 Jason Sears Configuration: 1080110012-like: nl_04 7e19/m^2; Ip 600 kA; Bt 5.9T;
RFpower: 2MW

Result: plasma, 1.8 MW, very high Active freq (due to decreased density)

Next shot:

Apr 3 2008 11:24:35:587AM 1080403009 Jason Sears Configuration: 1080110012-like: nl_04 7e19/m^2; Ip 600 kA; Bt 5.9T;
RFpower: 2.5MW

Result: plasma, disrupt at 1.4

Next shot: 2MW again

Apr 3 2008 11:25:40:900AM 1080403010 Jason Sears Configuration: 1080110012-like: nl_04 7e19/m^2; Ip 600 kA; Bt 5.9T
RFpower: 2MW

Result: plasma
Next shot: 3MW again

Apr 3 2008 11:41:34:497AM 1080403011 Jason Sears Configuration: 1080110012-like: nl_04 7e19/m^2; Ip 600 kA; Bt 5.9T
RFpower: 3MW

Result: plasma, disrupt at 0.75s
Next shot: 3MW again

Apr 3 2008 12:00:11:460PM 1080403012 Jason Sears Configuration: 1080110012-like: nl_04 7e19/m^2; Ip 600 kA; Bt 5.9T
RFpower: 3MW

Result: plasma, disrupt at 0.45s
Next shot: 2MW again, increase right gap to 1.1cm. Delay 3MW attempts to later in the day.

Apr 3 2008 12:23:28:277PM 1080403013 Jason Sears Configuration: 1080110012-like: nl_04 7e19/m^2; Ip 600 kA; Bt 5.9T;
RFpower: 2MW
rgap: 11mm

Result: plasma
Next shot: 2.5MW

Apr 3 2008 12:47:54:980PM 1080403014 Jason Sears Configuration: 1080110012-like: nl_04 7e19/m^2; Ip 600 kA; Bt 5.9T;
RFpower: 2.5MW
rgap: 11mm

Result: plasma
Next shot: 2MW, do over with more refined 1.1cm rgap

Apr 3 2008 01:12:02:150PM 1080403015 Jason Sears Configuration: 1080110012-like: nl_04 7e19/m^2; Ip 600 kA; Bt 5.9T;
RFpower: 2MW
rgap: 11mm

Result: plasma
Next shot: 2MW, slow ramp to seek trophy resonances

Apr 3 2008 01:26:19:430PM 1080403016 Jason Sears Configuration: 1080110012-like: nl_04 7e19/m^2; Ip 600 kA; Bt 5.9T;
RFpower: 2MW
rgap: 5mm
sweep: 0.5 MHz/s

Result: plasma
Next shot: 2.5MW,

Apr 3 2008 01:55:14:480PM 1080403017 Jason Sears Configuration: 1080110012-like: nl_04 7e19/m^2; Ip 600 kA; Bt 5.9T;
RFpower: 2.5MW
rgap: 5mm
sweep: 0.5 MHz/s

Result: plasma
Next shot: 2.5MW,

Apr 3 2008 01:55:56:710PM 1080403018 Jason Sears Configuration: 1080110012-like: nl_04 7e19/m^2; Ip 600 kA; Bt 5.9T;
RFpower: 2.5MW
rgap: 5mm
sweep: 0.5 MHz/s, qAE=1.5

Result: plasma
Next shot: 2MW, go to nebar=1.4e18 shots

Apr 3 2008 02:01:37:730PM 1080403019 Jason Sears Configuration: 1080110012-like: nl_04 7e19/m^2; Ip 600 kA; Bt 5.9T;
RFpower: 2.5MW
rgap: 5mm
sweep: 1.5 MHz/s, qAE=1.5
nebar: 1.4e18

Result: plasma
Next shot: 2.5MW

Apr 3 2008 02:42:50:540PM 1080403020 Jason Sears Configuration: 1080110012-like: nl_04 7e19/m^2; Ip 600 kA; Bt 5.9T;
RFpower: 2.5MW
rgap: 5mm
sweep: 1.5 MHz/s, qAE=1.5
nebar: 1.4e18

Result: plasma
Next shot: 2.5MW, wide frequency sweep

Apr 3 2008 02:44:58:790PM 1080403021 Jason Sears Configuration: 1080110012-like: nl_04 7e19/m^2; Ip 600 kA; Bt 5.9T;
RFpower: 2.5MW
rgap: 5mm
sweep: 1.5 MHz/s, wideband
nebar: 1.25e18

Result: plasma
Next shot: 1070626020-like configuration

Apr 3 2008 03:05:08:417PM 1080403022 Jason Sears Configuration:
RFpower: 2MW
sweep: 1.5 MHz/s
config: limited

Result: plasma
Next shot: 2MW

Apr 3 2008 03:35:46:620PM 1080403023 Jason Sears Configuration:
RFpower: 2.5MW
sweep: 1.5 MHz/s
config: limited

Result: plasma
Next shot: 2MW

Apr 3 2008 03:36:00:790PM 1080403024 Jason Sears Configuration:
RFpower: 2.5MW
sweep: 1.5 MHz/s
config: limited

Result: plasma, slow sweep
Next shot: 2MW

Apr 3 2008 04:15:16:277PM 1080403025 Jason Sears Configuration:
RFpower: 2.5MW
sweep: 1.5 MHz/s
config: limited

Result: plasma, slow sweep
Next shot: 2MW

Apr 3 2008 04:28:03:980PM 1080403026 Jason Sears Configuration:
RFpower:
sweep: attempt calibration shot
config: limited

Result: disruption, due to cryo cooling?
Next shot: 3.5MW

Apr 3 2008 04:25:56:557PM 1080403027 Jason Sears Configuration:
RFpower: 3MW
sweep: attempt calibration shot
config: diverted

Result: plasma
Next shot:

Apr 3 2008 04:45:43:837PM 1080403028 Jason Sears Configuration:
RFpower: 3.5MW
sweep: regular
config: diverted

Result: no power, helium burp from cryo
Next shot:

Apr 3 2008 04:55:05:603PM 1080403029 Jason Sears Configuration:
RFpower: 3.5MW
sweep: regular
config: diverted

Result: disrupt at 0.7s
Next shot:

Apr 3 2008 05:15:01:353PM 1080403030 Jason Sears Configuration:
RFpower: 3.5MW
sweep: regular
config: diverted

Result: plasma! 3.5MW
Next shot:

Physics Operator Comments

Apr 3 2008 09:10:38:273AM 1080403001 Jim Irby load from 1080110012 --- using seg01 and seg03, nl_04 7e19/m^2,Ip 600 kA, Bt 5.9T
loaded

Import seg 1 from 1080402036 into seg 1
loaded

TF PLC current limit at 165 kA with a measured current on 1080110012 of 163 kA. It worked so leave it alone.

BP 2.8e-7 Torr at 08:10

RGA indicated good cleanup from yesterday. Levels about a factor of two lower at ecdc startup yesterday compared to previous day.

prepuff from 19 to 22 ms
loaded

dpcs_ftae2 procedure turned on and loaded

Note: RCUR at 1000, Br0 at -0.0005 T

new 10% diborane bottle installed (replaced 20% bottle) at 09:40

BP 2.2e-7 Torr at 09:42

Mass49 at 8.5e-10 Torr

-----------------------------
no TMX supplies ---- I2t fault was not cleared for the TXM supplies

Apr 3 2008 09:29:12:587AM 1080403002 Jim Irby no dpcs changes

plasma --- MARFEs galore --- carbon low, normal levels

mass49 approx 1e-8 Torr, diborane lines high

ICRF looks good

Thomson midplane Ne low compared to 1080110012

efit params very close to 1080110012 values

h/(h+d) < 3%

Apr 3 2008 09:44:10:757AM 1080403003 Jim Irby prepuff from 22 to 24 ms

plasma --- still have Marfe, but better

ICRF very clean at 900 kW

Apr 3 2008 10:05:07:663AM 1080403004 Jim Irby slowed down density rise request a little more (before 0.400 s)
loaded

mass49 at 8e-9 Torr

90 kA discharge --- lasts about 50 ms

neuts/hards saturated

RGA indicates pumpout following the shot

Apr 3 2008 10:14:01:460AM 1080403005 Jim Irby plasma --- MARFE worse

ICRF seems to cause MARFE?

Apr 3 2008 10:28:06:663AM 1080403006 Jim Irby prepuff from 24 to 26 ms
reduced programmed gas in seg03

plasma --- Marfe with ICRF --- injection early -- almost lost plasma at 0.16 s

mass49 back up following discharge

Apr 3 2008 10:40:41:523AM 1080403007 Jim Irby no dpcs changes

plasma --- J-Port faulting --- still have MARFE with ICRF

mass49 at 1e-8 Torr level

Apr 3 2008 11:05:02:477AM 1080403008 Jim Irby Jason goes into cell --- took a while to clear oxygen

nl_04 density request to 6e19 from 7e19/m^2
loaded

out of cell --- 22:50 into recool

plasma --- MARFE gone --- 1.8 MW of ICRF --- no D-Port

SL happy with shot

Apr 3 2008 11:18:40:040AM 1080403009 Jim Irby repeat dpcs

burst of mass 28 just before shot??

plasma --- runaways early --- disruption at 1.42 s
injection starts at 1.416 s --- 2.5 MW ICRF

m49 > 1e-8

Apr 3 2008 11:30:33:023AM 1080403010 Jim Irby prefill from 26 to 27 ms --- probably unwise following a disruption
loaded

m49 and m32 lines up following disruption on shot 09

bp 1e-6 Torr at pulse

plasma into rampdown --- early thrash gone

ICRF clean at 2 MW

Apr 3 2008 11:53:23:410AM 1080403011 Jim Irby no dpcs changes

plasma --- disruption at 0.713 s
injection starting around 0.6 s
icrf up to 3 MW

Apr 3 2008 12:14:37:947PM 1080403012 Jim Irby no dpcs changes

plasma for 0.45 s
big injection starting around 0.25 s --- current dropping by .24 s

Steve just noticed that mass28 was on the rise before this shot
Cooling off ---- vessel at 18C --- pumpspeed was at 8 psi

Apr 3 2008 12:29:02:540PM 1080403013 Jim Irby RCUR reduced by 5 mm
loaded

plasma into rampdown --- outer gap from 15 to 12 mm from 0.5 to 1.5 s
will trim RCUR for next shot

Apr 3 2008 12:44:39:960PM 1080403014 Jim Irby RCUR increased by 2 mm early with ramp back in -- try to keep 11 mm gap
loaded

plasma --- Outer gap now about 10 mm, but flat --- not a very good physop

Apr 3 2008 01:10:11:837PM 1080403015 Jim Irby dcps repeat

plasma into rampdown --- some hards early

Apr 3 2008 01:21:17:180PM 1080403016 Jim Irby import seg 3 from 1080403012 into seg 3
loaded --- go back to smaller outer gap

plasma into rampdown --- outer gap good

Apr 3 2008 01:42:33:103PM 1080403017 Jim Irby increased programmed gas a little in seg01 --- hards early on 16
loaded

plasma into rampdown ---- hards better

Apr 3 2008 01:50:22:133PM 1080403018 Jim Irby no dpcs changes

plasma into rampdown --- lots of injections --- lucky to have survived

Apr 3 2008 02:10:24:620PM 1080403019 Jim Irby nl_04 request back to 7e19/m^2 -- hope higher power will continue to tame the MARFE.
loaded

plasma into rampdown

Apr 3 2008 02:28:10:400PM 1080403020 Jim Irby dcps repeat -- ICRF power change

nitrogen coming up again --- cooling reduced at t=10 minutes
waiting for m28 to come back down
physop ready button pushed at t=19 minutes -- m28 lower than on previous shot

plasma into rampdown ---

Apr 3 2008 02:39:37:777PM 1080403021 Robert Granetz Granetz taking over as physics operator for Jim Irby for an hour or so.
Jim has already made all DPCS changes for shot 21.

Apr 3 2008 03:21:30:573PM 1080403021 Robert Granetz Shot 21 -- Plasma. Good shot.

Next shot: Switch to inner wall limited. Session leader requests 1070626020. I couldn't find
a more recent one, so I'll bite the bullet and load his and update all the magnetics estimators.
It was in segment 2, and I'll load it into segment 2. The routine DPCS_FTAE2 will remain
active, since I only imported segment 2.

Apr 3 2008 04:06:14:133PM 1080403021 Jim Irby nl_04_request to 6e19/m^2 from 7e19/m^2

Apr 3 2008 03:08:24:040PM 1080403022 Robert Granetz Shot 22 -- Plasma. Good shot. Inner wall limited, 0.6 MA, 5.9 T, all as requested.
Prf=2.5 MW (using all three antennas)

Next shot: no DPCS changes

Apr 3 2008 03:28:45:370PM 1080403023 Robert Granetz Shot 23 -- Plasma. Good shot. Inner wall limited. Prf=2.5 MW, no faults.

Next shot: decrease nl_04 to 0.6e20 m-2 (from 0.7)

Apr 3 2008 03:47:01:277PM 1080403024 Robert Granetz Shot 24 -- Plasma. Good shot. Inner wall limited. Prf=2.5 MW.

Next shot: no DPCS changes

Apr 3 2008 03:54:48:837PM 1080403025 Robert Granetz Shot 25 -- Plasma. Good shot. Inner wall limited. Prf=2.0 MW.

Next shot: no DPCS changes

Apr 3 2008 04:15:30:573PM 1080403026 Jim Irby plasma for 0.287 s

Apr 3 2008 04:19:55:290PM 1080403026 Robert Granetz Shot 26 -- Plasma, but terminated very early. The cryopump was being prepared for
operation on the next shot, but it caused a sharp rise in N2 in the vessel
prior to this shot. We waited until the N2 came back to normal levels, but
we suspect that this still caused this shot to radiate to an early death.

Next shot: Jim Irby will take over as physics operator again.

Apr 3 2008 04:33:11:417PM 1080403027 Jim Irby seg2 off, seg3 on --- back to upper null

cryopump at ln2 temps --- LHe has been purged

plasma into rampdown

Apr 3 2008 04:42:20:430PM 1080403028 Jim Irby This shot will be with cryopump
prefill to 54 ms
loaded

helium following continuously to make sure we continue to pump
m28,32,etc very low
bp 1.2e-7 Torr

no power shot ---- cryopump dumped and got to the 1e-5 Torr range

Apr 3 2008 05:04:38:260PM 1080403029 Jim Irby try again with cryopump

bp 9.5e-8 Torr as we entered INIT

bp 9.3e-8 Torr in CHECK

plasma for 0.72 s ----

Apr 3 2008 05:21:20:510PM 1080403030 Jim Irby another try with the cryopump
prefill to 59 ms

plasma into rampdown --- 3.7 MW of ICRF

Engineering Operator Comments

Shot Time Type Status Comment

1 09:05:04:600AM Plasma Bad TMX breakers were open

2 09:18:31:913AM Plasma Ok

3 09:33:07:290AM Plasma Ok

4 09:48:34:603AM Plasma Ok

5 10:02:47:070AM Plasma Ok

6 10:15:20:117AM Plasma Ok

7 10:28:15:900AM Plasma Ok

8 10:55:49:820AM Plasma Ok

9 11:08:52:477AM Plasma Ok

10 11:23:26:150AM Plasma Ok

11 11:38:38:623AM Plasma Ok

12 11:51:28:940AM Plasma Ok

13 12:20:46:853PM Plasma Ok

14 12:33:09:150PM Plasma Ok

15 12:58:26:523PM Plasma Ok

16 01:12:22:853PM Plasma Ok

17 01:27:31:760PM Plasma Ok

18 01:40:50:823PM Plasma Ok

19 01:59:05:040PM Plasma Ok

20 02:23:27:883PM Plasma Ok

21 02:42:21:370PM Plasma Ok

22 02:59:50:883PM Plasma Ok

23 03:12:29:977PM Plasma Ok

24 03:29:15:243PM Plasma Ok

25 03:42:20:680PM Plasma Ok

26 04:06:20:133PM Plasma Ok

27 04:22:19:353PM Plasma Ok

28 04:38:35:620PM Plasma Bad Cryopump Problems

29 04:52:11:073PM Plasma Ok

30 05:04:28:743PM Plasma Ok

System Availability

Apr 3 2008 09:04:54:913AM

System Available Comment Availability
Changed Owner Description Who Can
Change
Active MHD yes Fully operational Mar 28 2007 09:19PM (sears) Joe Snipes Active MHD Antenna sears,snipes
BES yes vertical array of six views at R ~ 87.3 cm, radial array of three views out to R ~ 89 cm, both at outboard midplane. Three discrete fiber views of beam at R ~ 70.0, 76.5 and 82.5 cm. Feb 06 2007 10:00AM (bravenec) Ron Bravenec Beam Emission Spectroscopy bravenec,rowan
Bolometers yes Diode 2pi working fine, foil 2pi being low-pass filtered to remove noise. Outboard miidplane AXUV has a grounded channel which is disrupting the whole array OFFLINE for now. Midplane foils working fine, but need to fill tree with calibrations. 2D AXUV arrays are being digitized but need further debugging and calibration. Mar 14 2008 11:09AM (mlreinke) Matt Reinke Bolometers hutch,mlreinke
Boronization no First Boronization 5/9/07 Bottle has been removed from the cell Sep 14 2007 12:42PM (dekow) Jim Irby Boronization dekow,irby
CNPA yes Single channel CNPA available as of 12/1707 Dec 17 2007 05:48PM (parker) Ron Parker Compact Neutral Analyzer parker
Cryopump - Upper Divertor yes Cryopump is operational Dec 11 2007 10:13AM (labombard) Brian LaBombard Upper Divertor Cryopump irby,labombard
CXRS yes The pedestal toroidal array was installed, spatially and absolutely calibrated. There are 10 chords intersect the beam at the major_R_range=[74.2:86.3]cm. Spatial resolution: 1.2 cm. The F-top poloidal array was installed and spatially calibrated. There are 19 chords intersect the beam at the major_R_range=[67.8:91.0]cm. Spatial resolution: 1.22 cm. Nov 27 2007 10:21AM (bespam) Bill Rowan Charge Exchange Spectroscopy bespam,blip,rachmcd,rowan
D Alpha yes \ha2_bright and \SPECTROSCOPY::TOP.VUV.VIS_SIGNALS:MCP_VIS_SIG1 are available Nov 26 2007 04:23PM (terry) Jim Terry Balmer Alpha Monitor irby,terry,wolfe
Dalsa yes optics repaired, camera re-installed, and view has been re-calibrated Nov 27 2007 09:54AM (marmar) Earl Marmar Visible Bremsstrahlung marmar
Disruption Mitigation no Nov 20 2007 10:47PM (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 Nov 20 2007 10:47PM (granetz) Robert Granetz Diagnostic Neutral Beam beals,granetz
FRC-ECE yes 16 Channels now working - low freq. side - outer Rmids Feb 19 2008 09:56AM (phillips) Perry Phillips Heterodyne ECE-32 channels phillips
G-Side Ratiomatic yes Gauge is operational and calibrated against G-side MKS on shot#1071127002 Nov 27 2007 01:25PM (labombard) Brian LaBombard G-side ratiomatic ionization gauge labombard,toland
GPC yes All 9 channels operational as of new year. Jan 03 2008 09:31AM (hubbard) Amanda Hubbard ECE Polychromater hubbard,schmidt
GPC2 yes Most channels operational. Jan 02 2008 12:22PM (hubbard) Amanda Hubbard ECE Polychromater hubbard,schmidt
GPI no Neither the Xpt-view nor the midplane-view camera is operational. Nov 26 2007 04:25PM (terry) Jim Terry Gas Puff Imaging terry,zweben
H/D yes Should be operational for the FY08 campaign Nov 27 2007 09:54AM (marmar) Earl Marmar H/D Ratio marmar
Hirex Jr yes Mar 06 2007 08:59AM (rice) John Rice High Resolution X-Ray ince,rice
Hirex Sr no Be Window has a leak and so the gate valve is closed Nov 23 2007 12:50PM (ince) John Rice High Resolution X-Ray ince,rice
HXR yes Something might be wrong with channel 26; all others working fine. Mar 23 2007 10:43AM (schmidt) Ron Parker Hard X-Ray Array parker,schmidt
ICRF D-Antenna yes available (quarter-wave transformer for pre-matching) Dec 11 2007 09:01AM (ylin) Steve Wukitch D-port antenna wukitch,ylin
ICRF E-Antenna yes available (with FFT for automatical matching) Dec 11 2007 09:01AM (ylin) Steve Wukitch E-port antenna wukitch,ylin
ICRF J-Antenna yes normally in [0,pi,pi,0] phase for heating. current drive phase available if requested. Dec 11 2007 09:03AM (ylin) Steve Wukitch J-port antenna wukitch,ylin
Lower Hybrid yes Body I Fault Circuits Repaired and tested. High power tests completed Dec 05 2007 06:40PM (dterry) Ron Parker Lower Hybrid dterry,parker
LPI yes 1/9/08 Jan 09 2008 03:23PM (bose) Earl Marmar Lithium Pellet Injector bose,marmar
Ly-alpha yes Midplane working fine, emissivity profiles being stored in tree, but still need to apply in-vessel calibrations to data. WB1-LY being digitized, but not processed in tree. Dec 09 2007 06:53PM (mlreinke) Matt Reinke Lyman alpha cameras labombard,mlreinke
McPherson no Problems with detector. No quantitative line brightnesses possible. Qualitative tasks like impurity identification possible. Feb 15 2008 02:07PM (mlreinke) Jim Terry VUV Spectrometer mlreinke,terry
Michelson yes Working, moderate speed for now. Jan 02 2008 01:19PM (hubbard) Amanda Hubbard ECE Te Profiles hubbard,schmidt
MKS yes E-Top, E-Bottom, F-top (cryo), G-side, and B-bottom are operational. F-top gauge has a 'sniffer tube' to measure pressures in cryopump gas box. Mar 20 2007 06:42PM (g) Brian LaBombard Baratron pressure gauges labombard
MLP no Initial tests on the A-port scanning probe went well. We need to take care of some control glitches that caused some component failures. May 30 2007 08:01PM (labombard) Brian LaBombard Mirror Langmuir Probe Electronics System labombard
MSE no We are basically awaiting the DNB & its new aperture. MSE itself is OK. Feb 21 2008 08:51AM (jinseok) Steve Scott Motional Stark Effect jinseok,sscott
Neutrons yes Voltage is on for the He3 bank. Voltage will be turned on for the global system at the first plasma attempts. Nov 26 2007 08:31AM (fiore) Catherine Fiore Neutron Detectors fiore
Neuts and Hards yes calibration unchanged from 2007 campaign Dec 04 2007 08:56PM (irby) Jim Irby X-Ray/Neutron Detector at K-Hor irby
NINJA yes All capillaries displayed by the NINJA_CONTROL GUI have been tested. Nov 26 2007 04:26PM (terry) Brian LaBombard NINJA gas puff labombard,terry
PCI yes working Feb 29 2008 07:00PM (lianglin) Miklos Porkolab Phase Contrast Imaging edlund,lianglin,ntsujii,porkolab
Penning Gauges yes All gauges except B_DivL are operating Nov 27 2007 01:31PM (labombard) Brian LaBombard Penning Ionization Gauges labombard
Plasma TV yes WIDE1, WIDE2 (chan 33), DANT, JANT and DIV are operational. Nov 26 2007 04:27PM (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
Probe Array - ISD yes Operational Nov 27 2007 01:40PM (labombard) Brian Labombard Inner Lower Divertor Probe Array labombard
Probe Array - LH yes Operational Nov 27 2007 01:40PM (labombard) Brian LaBombard Lower Hybrid Probe Array labombard
Probe Array - OSD yes Operational Nov 27 2007 01:41PM (labombard) Brian LaBombard Outer Lower Divertor Probe Array labombard
Probe Array - UDIV yes Operational Nov 27 2007 01:41PM (labombard) Brian LaBombard Upper Divertor Probe Array labombard
Reflectometer yes System is partially connected....88 and 110 are connected. variable freq. and 140 are also connected Apr 01 2008 09:44AM (dominguez) Earl Marmar Reflectometer dominguez,marmar
Scanning Probe - ASP yes Operational, but needs to be checked with plasma. Nov 27 2007 01:45PM (labombard) Brian LaBombard A-Port Scanning Probe labombard
Scanning Probe - FSP yes FSP is operational Dec 11 2007 10:13AM (labombard) Brian LaBombard F-Port Scanning Probe labombard
Scanning Probe - WASP yes A- and K-port WASP electrodes have been replaced/tested. Nov 27 2007 01:44PM (labombard) Brian LaBombard Inner Wall Scanning Probe labombard,nsmick
TCI yes CO2 Laser is on --- initial alignment complete Nov 16 2007 01:23PM (irby) Jim Irby Two-Color Interferometer irby,murray
TS - Core yes 12 polychromators (#1~8,9,11,13,15), 1 laser. Density is calibrated for YAG1 based on ECE cutoff data taken on Mar11. YAG2 is offline. Mar 14 2008 09:59AM (jwhughes) Jerry Hughes Core Thomson scattering jwhughes,yma
TS - Edge yes System is working with 3 out of 4 spectral channels and should be believable for Te>50eV, ne>3e19. Density is calibrated from both Raman scattering in D2 (3/2/08) and from edge ECE cutoffs in high-density H-modes (1080228014). Mar 17 2008 10:26AM (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
XTOMO yes system operational, but channels have been dying...stay tuned. Mar 14 2008 11:10AM (mlreinke) Bob Granetz X-Ray Tomography granetz,mlreinke

Apr 3 2008 12:33:02:493PM

System Available Comment Availability
Changed Owner Description Who Can
Change
Active MHD yes Fully operational Mar 28 2007 09:19PM (sears) Joe Snipes Active MHD Antenna sears,snipes
BES yes vertical array of six views at R ~ 87.3 cm, radial array of three views out to R ~ 89 cm, both at outboard midplane. Three discrete fiber views of beam at R ~ 70.0, 76.5 and 82.5 cm. Feb 06 2007 10:00AM (bravenec) Ron Bravenec Beam Emission Spectroscopy bravenec,rowan
Bolometers yes Diode 2pi working fine, foil 2pi being low-pass filtered to remove noise. Outboard miidplane AXUV has a grounded channel which is disrupting the whole array OFFLINE for now. Midplane foils working fine, but need to fill tree with calibrations. 2D AXUV arrays are being digitized but need further debugging and calibration. Mar 14 2008 11:09AM (mlreinke) Matt Reinke Bolometers hutch,mlreinke
Boronization no First Boronization 5/9/07 Bottle has been removed from the cell Sep 14 2007 12:42PM (dekow) Jim Irby Boronization dekow,irby
CNPA yes Single channel CNPA available as of 12/1707 Dec 17 2007 05:48PM (parker) Ron Parker Compact Neutral Analyzer parker
Cryopump - Upper Divertor yes Cryopump is operational Dec 11 2007 10:13AM (labombard) Brian LaBombard Upper Divertor Cryopump irby,labombard
CXRS yes The pedestal toroidal array was installed, spatially and absolutely calibrated. There are 10 chords intersect the beam at the major_R_range=[74.2:86.3]cm. Spatial resolution: 1.2 cm. The F-top poloidal array was installed and spatially calibrated. There are 19 chords intersect the beam at the major_R_range=[67.8:91.0]cm. Spatial resolution: 1.22 cm. Nov 27 2007 10:21AM (bespam) Bill Rowan Charge Exchange Spectroscopy bespam,blip,rachmcd,rowan
D Alpha yes \ha2_bright and \SPECTROSCOPY::TOP.VUV.VIS_SIGNALS:MCP_VIS_SIG1 are available Nov 26 2007 04:23PM (terry) Jim Terry Balmer Alpha Monitor irby,terry,wolfe
Dalsa yes optics repaired, camera re-installed, and view has been re-calibrated Nov 27 2007 09:54AM (marmar) Earl Marmar Visible Bremsstrahlung marmar
Disruption Mitigation no Nov 20 2007 10:47PM (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 Nov 20 2007 10:47PM (granetz) Robert Granetz Diagnostic Neutral Beam beals,granetz
FRC-ECE yes 16 Channels now working - low freq. side - outer Rmids Feb 19 2008 09:56AM (phillips) Perry Phillips Heterodyne ECE-32 channels phillips
G-Side Ratiomatic yes Gauge is operational and calibrated against G-side MKS on shot#1071127002 Nov 27 2007 01:25PM (labombard) Brian LaBombard G-side ratiomatic ionization gauge labombard,toland
GPC yes All 9 channels operational as of new year. Jan 03 2008 09:31AM (hubbard) Amanda Hubbard ECE Polychromater hubbard,schmidt
GPC2 yes Most channels operational. Jan 02 2008 12:22PM (hubbard) Amanda Hubbard ECE Polychromater hubbard,schmidt
GPI no Neither the Xpt-view nor the midplane-view camera is operational. Nov 26 2007 04:25PM (terry) Jim Terry Gas Puff Imaging terry,zweben
H/D yes Should be operational for the FY08 campaign Nov 27 2007 09:54AM (marmar) Earl Marmar H/D Ratio marmar
Hirex Jr yes Mar 06 2007 08:59AM (rice) John Rice High Resolution X-Ray ince,rice
Hirex Sr no Be Window has a leak and so the gate valve is closed Nov 23 2007 12:50PM (ince) John Rice High Resolution X-Ray ince,rice
HXR yes Something might be wrong with channel 26; all others working fine. Mar 23 2007 10:43AM (schmidt) Ron Parker Hard X-Ray Array parker,schmidt
ICRF D-Antenna yes available (quarter-wave transformer for pre-matching) Dec 11 2007 09:01AM (ylin) Steve Wukitch D-port antenna wukitch,ylin
ICRF E-Antenna yes available (with FFT for automatical matching) Dec 11 2007 09:01AM (ylin) Steve Wukitch E-port antenna wukitch,ylin
ICRF J-Antenna yes normally in [0,pi,pi,0] phase for heating. current drive phase available if requested. Dec 11 2007 09:03AM (ylin) Steve Wukitch J-port antenna wukitch,ylin
Lower Hybrid yes Body I Fault Circuits Repaired and tested. High power tests completed Dec 05 2007 06:40PM (dterry) Ron Parker Lower Hybrid dterry,parker
LPI yes 1/9/08 Jan 09 2008 03:23PM (bose) Earl Marmar Lithium Pellet Injector bose,marmar
Ly-alpha yes Midplane working fine, emissivity profiles being stored in tree, but still need to apply in-vessel calibrations to data. WB1-LY being digitized, but not processed in tree. Dec 09 2007 06:53PM (mlreinke) Matt Reinke Lyman alpha cameras labombard,mlreinke
McPherson no Problems with detector. No quantitative line brightnesses possible. Qualitative tasks like impurity identification possible. Feb 15 2008 02:07PM (mlreinke) Jim Terry VUV Spectrometer mlreinke,terry
Michelson yes Working, moderate speed for now. Jan 02 2008 01:19PM (hubbard) Amanda Hubbard ECE Te Profiles hubbard,schmidt
MKS yes E-Top, E-Bottom, F-top (cryo), G-side, and B-bottom are operational. F-top gauge has a 'sniffer tube' to measure pressures in cryopump gas box. Mar 20 2007 06:42PM (g) Brian LaBombard Baratron pressure gauges labombard
MLP no Initial tests on the A-port scanning probe went well. We need to take care of some control glitches that caused some component failures. May 30 2007 08:01PM (labombard) Brian LaBombard Mirror Langmuir Probe Electronics System labombard
MSE no We are basically awaiting the DNB & its new aperture. MSE itself is OK. Feb 21 2008 08:51AM (jinseok) Steve Scott Motional Stark Effect jinseok,sscott
Neutrons yes Voltage is on for the He3 bank. Voltage will be turned on for the global system at the first plasma attempts. Nov 26 2007 08:31AM (fiore) Catherine Fiore Neutron Detectors fiore
Neuts and Hards yes calibration unchanged from 2007 campaign Dec 04 2007 08:56PM (irby) Jim Irby X-Ray/Neutron Detector at K-Hor irby
NINJA yes All capillaries displayed by the NINJA_CONTROL GUI have been tested. Nov 26 2007 04:26PM (terry) Brian LaBombard NINJA gas puff labombard,terry
PCI yes working Feb 29 2008 07:00PM (lianglin) Miklos Porkolab Phase Contrast Imaging edlund,lianglin,ntsujii,porkolab
Penning Gauges yes All gauges except B_DivL are operating Nov 27 2007 01:31PM (labombard) Brian LaBombard Penning Ionization Gauges labombard
Plasma TV yes WIDE1, WIDE2 (chan 33), DANT, JANT and DIV are operational. Nov 26 2007 04:27PM (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
Probe Array - ISD yes Operational Nov 27 2007 01:40PM (labombard) Brian Labombard Inner Lower Divertor Probe Array labombard
Probe Array - LH yes Operational Nov 27 2007 01:40PM (labombard) Brian LaBombard Lower Hybrid Probe Array labombard
Probe Array - OSD yes Operational Nov 27 2007 01:41PM (labombard) Brian LaBombard Outer Lower Divertor Probe Array labombard
Probe Array - UDIV yes Operational Nov 27 2007 01:41PM (labombard) Brian LaBombard Upper Divertor Probe Array labombard
Reflectometer yes 50, 60, 88 and 110 are connected (75 is being repaired). variable freq. and 140 are also connected but not functioning properly Apr 03 2008 12:20PM (dominguez) Earl Marmar Reflectometer dominguez,marmar
Scanning Probe - ASP yes Operational, but needs to be checked with plasma. Nov 27 2007 01:45PM (labombard) Brian LaBombard A-Port Scanning Probe labombard
Scanning Probe - FSP yes FSP is operational Dec 11 2007 10:13AM (labombard) Brian LaBombard F-Port Scanning Probe labombard
Scanning Probe - WASP yes A- and K-port WASP electrodes have been replaced/tested. Nov 27 2007 01:44PM (labombard) Brian LaBombard Inner Wall Scanning Probe labombard,nsmick
TCI yes CO2 Laser is on --- initial alignment complete Nov 16 2007 01:23PM (irby) Jim Irby Two-Color Interferometer irby,murray
TS - Core yes 12 polychromators (#1~8,9,11,13,15), 1 laser. Density is calibrated for YAG1 based on ECE cutoff data taken on Mar11. YAG2 is offline. Mar 14 2008 09:59AM (jwhughes) Jerry Hughes Core Thomson scattering jwhughes,yma
TS - Edge yes System is working with 3 out of 4 spectral channels and should be believable for Te>50eV, ne>3e19. Density is calibrated from both Raman scattering in D2 (3/2/08) and from edge ECE cutoffs in high-density H-modes (1080228014). Mar 17 2008 10:26AM (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
XTOMO yes system operational, but channels have been dying...stay tuned. Mar 14 2008 11:10AM (mlreinke) Bob Granetz X-Ray Tomography granetz,mlreinke

Session Leader Comments
Apr 3 2008 09:13:58:587AM	1080403001	Jason Sears	Configuration: 1080110012-like: nl_04 7e19/m^2; Ip 600 kA; Bt 5.9T; no argon RFpower: 0.5MW Result: no plasma, a power supply problem? Next shot: try again
Apr 3 2008 09:48:34:947AM	1080403002	Jason Sears	Configuration: 1080110012-like: nl_04 7e19/m^2; Ip 600 kA; Bt 5.9T; no argon RFpower: 0.5MW Result: plasma Next shot: go to 1MW
Apr 3 2008 09:48:08:117AM	1080403003	Jason Sears	Configuration: 1080110012-like: nl_04 7e19/m^2; Ip 600 kA; Bt 5.9T; no argon RFpower: 1MW Result: plasma, 0.8MW Next shot: go to 1.5MW and change cnpa aperture to 206
Apr 3 2008 10:01:03:807AM	1080403004	Jason Sears	Configuration: 1080110012-like: nl_04 7e19/m^2; Ip 600 kA; Bt 5.9T; no argon RFpower: 1.5MW Result: fizzle Next shot: try 1.5MW again
Apr 3 2008 10:11:53:367AM	1080403005	Jason Sears	Configuration: 1080110012-like: nl_04 7e19/m^2; Ip 600 kA; Bt 5.9T; no argon RFpower: 1.5MW Result: plasma, marfing Next shot: go to 2.0MW
Apr 3 2008 10:57:02:757AM	1080403006	Jason Sears	Configuration: 1080110012-like: nl_04 7e19/m^2; Ip 600 kA; Bt 5.9T; no argon RFpower: 2MW Result: plasma, marfing Next shot: go to 2.5MW
Apr 3 2008 11:20:17:977AM	1080403007	Jason Sears	Configuration: 1080110012-like: nl_04 7e19/m^2; Ip 600 kA; Bt 5.9T; RFpower: 2.5MW Result: plasma, fuzzy RF between 1.5 and 2.5 MW Next shot: 2.5MW
Apr 3 2008 11:19:05:150AM	1080403008	Jason Sears	Configuration: 1080110012-like: nl_04 7e19/m^2; Ip 600 kA; Bt 5.9T; RFpower: 2MW Result: plasma, 1.8 MW, very high Active freq (due to decreased density) Next shot:
Apr 3 2008 11:24:35:587AM	1080403009	Jason Sears	Configuration: 1080110012-like: nl_04 7e19/m^2; Ip 600 kA; Bt 5.9T; RFpower: 2.5MW Result: plasma, disrupt at 1.4 Next shot: 2MW again
Apr 3 2008 11:25:40:900AM	1080403010	Jason Sears	Configuration: 1080110012-like: nl_04 7e19/m^2; Ip 600 kA; Bt 5.9T RFpower: 2MW Result: plasma Next shot: 3MW again
Apr 3 2008 11:41:34:497AM	1080403011	Jason Sears	Configuration: 1080110012-like: nl_04 7e19/m^2; Ip 600 kA; Bt 5.9T RFpower: 3MW Result: plasma, disrupt at 0.75s Next shot: 3MW again
Apr 3 2008 12:00:11:460PM	1080403012	Jason Sears	Configuration: 1080110012-like: nl_04 7e19/m^2; Ip 600 kA; Bt 5.9T RFpower: 3MW Result: plasma, disrupt at 0.45s Next shot: 2MW again, increase right gap to 1.1cm. Delay 3MW attempts to later in the day.
Apr 3 2008 12:23:28:277PM	1080403013	Jason Sears	Configuration: 1080110012-like: nl_04 7e19/m^2; Ip 600 kA; Bt 5.9T; RFpower: 2MW rgap: 11mm Result: plasma Next shot: 2.5MW
Apr 3 2008 12:47:54:980PM	1080403014	Jason Sears	Configuration: 1080110012-like: nl_04 7e19/m^2; Ip 600 kA; Bt 5.9T; RFpower: 2.5MW rgap: 11mm Result: plasma Next shot: 2MW, do over with more refined 1.1cm rgap
Apr 3 2008 01:12:02:150PM	1080403015	Jason Sears	Configuration: 1080110012-like: nl_04 7e19/m^2; Ip 600 kA; Bt 5.9T; RFpower: 2MW rgap: 11mm Result: plasma Next shot: 2MW, slow ramp to seek trophy resonances
Apr 3 2008 01:26:19:430PM	1080403016	Jason Sears	Configuration: 1080110012-like: nl_04 7e19/m^2; Ip 600 kA; Bt 5.9T; RFpower: 2MW rgap: 5mm sweep: 0.5 MHz/s Result: plasma Next shot: 2.5MW,
Apr 3 2008 01:55:14:480PM	1080403017	Jason Sears	Configuration: 1080110012-like: nl_04 7e19/m^2; Ip 600 kA; Bt 5.9T; RFpower: 2.5MW rgap: 5mm sweep: 0.5 MHz/s Result: plasma Next shot: 2.5MW,
Apr 3 2008 01:55:56:710PM	1080403018	Jason Sears	Configuration: 1080110012-like: nl_04 7e19/m^2; Ip 600 kA; Bt 5.9T; RFpower: 2.5MW rgap: 5mm sweep: 0.5 MHz/s, qAE=1.5 Result: plasma Next shot: 2MW, go to nebar=1.4e18 shots
Apr 3 2008 02:01:37:730PM	1080403019	Jason Sears	Configuration: 1080110012-like: nl_04 7e19/m^2; Ip 600 kA; Bt 5.9T; RFpower: 2.5MW rgap: 5mm sweep: 1.5 MHz/s, qAE=1.5 nebar: 1.4e18 Result: plasma Next shot: 2.5MW
Apr 3 2008 02:42:50:540PM	1080403020	Jason Sears	Configuration: 1080110012-like: nl_04 7e19/m^2; Ip 600 kA; Bt 5.9T; RFpower: 2.5MW rgap: 5mm sweep: 1.5 MHz/s, qAE=1.5 nebar: 1.4e18 Result: plasma Next shot: 2.5MW, wide frequency sweep
Apr 3 2008 02:44:58:790PM	1080403021	Jason Sears	Configuration: 1080110012-like: nl_04 7e19/m^2; Ip 600 kA; Bt 5.9T; RFpower: 2.5MW rgap: 5mm sweep: 1.5 MHz/s, wideband nebar: 1.25e18 Result: plasma Next shot: 1070626020-like configuration
Apr 3 2008 03:05:08:417PM	1080403022	Jason Sears	Configuration: RFpower: 2MW sweep: 1.5 MHz/s config: limited Result: plasma Next shot: 2MW
Apr 3 2008 03:35:46:620PM	1080403023	Jason Sears	Configuration: RFpower: 2.5MW sweep: 1.5 MHz/s config: limited Result: plasma Next shot: 2MW
Apr 3 2008 03:36:00:790PM	1080403024	Jason Sears	Configuration: RFpower: 2.5MW sweep: 1.5 MHz/s config: limited Result: plasma, slow sweep Next shot: 2MW
Apr 3 2008 04:15:16:277PM	1080403025	Jason Sears	Configuration: RFpower: 2.5MW sweep: 1.5 MHz/s config: limited Result: plasma, slow sweep Next shot: 2MW
Apr 3 2008 04:28:03:980PM	1080403026	Jason Sears	Configuration: RFpower: sweep: attempt calibration shot config: limited Result: disruption, due to cryo cooling? Next shot: 3.5MW
Apr 3 2008 04:25:56:557PM	1080403027	Jason Sears	Configuration: RFpower: 3MW sweep: attempt calibration shot config: diverted Result: plasma Next shot:
Apr 3 2008 04:45:43:837PM	1080403028	Jason Sears	Configuration: RFpower: 3.5MW sweep: regular config: diverted Result: no power, helium burp from cryo Next shot:
Apr 3 2008 04:55:05:603PM	1080403029	Jason Sears	Configuration: RFpower: 3.5MW sweep: regular config: diverted Result: disrupt at 0.7s Next shot:
Apr 3 2008 05:15:01:353PM	1080403030	Jason Sears	Configuration: RFpower: 3.5MW sweep: regular config: diverted Result: plasma! 3.5MW Next shot:

Physics Operator Comments
Apr 3 2008 09:10:38:273AM	1080403001	Jim Irby	load from 1080110012 --- using seg01 and seg03, nl_04 7e19/m^2,Ip 600 kA, Bt 5.9T loaded Import seg 1 from 1080402036 into seg 1 loaded TF PLC current limit at 165 kA with a measured current on 1080110012 of 163 kA. It worked so leave it alone. BP 2.8e-7 Torr at 08:10 RGA indicated good cleanup from yesterday. Levels about a factor of two lower at ecdc startup yesterday compared to previous day. prepuff from 19 to 22 ms loaded dpcs_ftae2 procedure turned on and loaded Note: RCUR at 1000, Br0 at -0.0005 T new 10% diborane bottle installed (replaced 20% bottle) at 09:40 BP 2.2e-7 Torr at 09:42 Mass49 at 8.5e-10 Torr ----------------------------- no TMX supplies ---- I2t fault was not cleared for the TXM supplies
Apr 3 2008 09:29:12:587AM	1080403002	Jim Irby	no dpcs changes plasma --- MARFEs galore --- carbon low, normal levels mass49 approx 1e-8 Torr, diborane lines high ICRF looks good Thomson midplane Ne low compared to 1080110012 efit params very close to 1080110012 values h/(h+d) < 3%
Apr 3 2008 09:44:10:757AM	1080403003	Jim Irby	prepuff from 22 to 24 ms plasma --- still have Marfe, but better ICRF very clean at 900 kW
Apr 3 2008 10:05:07:663AM	1080403004	Jim Irby	slowed down density rise request a little more (before 0.400 s) loaded mass49 at 8e-9 Torr 90 kA discharge --- lasts about 50 ms neuts/hards saturated RGA indicates pumpout following the shot
Apr 3 2008 10:14:01:460AM	1080403005	Jim Irby	plasma --- MARFE worse ICRF seems to cause MARFE?
Apr 3 2008 10:28:06:663AM	1080403006	Jim Irby	prepuff from 24 to 26 ms reduced programmed gas in seg03 plasma --- Marfe with ICRF --- injection early -- almost lost plasma at 0.16 s mass49 back up following discharge
Apr 3 2008 10:40:41:523AM	1080403007	Jim Irby	no dpcs changes plasma --- J-Port faulting --- still have MARFE with ICRF mass49 at 1e-8 Torr level
Apr 3 2008 11:05:02:477AM	1080403008	Jim Irby	Jason goes into cell --- took a while to clear oxygen nl_04 density request to 6e19 from 7e19/m^2 loaded out of cell --- 22:50 into recool plasma --- MARFE gone --- 1.8 MW of ICRF --- no D-Port SL happy with shot
Apr 3 2008 11:18:40:040AM	1080403009	Jim Irby	repeat dpcs burst of mass 28 just before shot?? plasma --- runaways early --- disruption at 1.42 s injection starts at 1.416 s --- 2.5 MW ICRF m49 > 1e-8
Apr 3 2008 11:30:33:023AM	1080403010	Jim Irby	prefill from 26 to 27 ms --- probably unwise following a disruption loaded m49 and m32 lines up following disruption on shot 09 bp 1e-6 Torr at pulse plasma into rampdown --- early thrash gone ICRF clean at 2 MW
Apr 3 2008 11:53:23:410AM	1080403011	Jim Irby	no dpcs changes plasma --- disruption at 0.713 s injection starting around 0.6 s icrf up to 3 MW
Apr 3 2008 12:14:37:947PM	1080403012	Jim Irby	no dpcs changes plasma for 0.45 s big injection starting around 0.25 s --- current dropping by .24 s Steve just noticed that mass28 was on the rise before this shot Cooling off ---- vessel at 18C --- pumpspeed was at 8 psi
Apr 3 2008 12:29:02:540PM	1080403013	Jim Irby	RCUR reduced by 5 mm loaded plasma into rampdown --- outer gap from 15 to 12 mm from 0.5 to 1.5 s will trim RCUR for next shot
Apr 3 2008 12:44:39:960PM	1080403014	Jim Irby	RCUR increased by 2 mm early with ramp back in -- try to keep 11 mm gap loaded plasma --- Outer gap now about 10 mm, but flat --- not a very good physop
Apr 3 2008 01:10:11:837PM	1080403015	Jim Irby	dcps repeat plasma into rampdown --- some hards early
Apr 3 2008 01:21:17:180PM	1080403016	Jim Irby	import seg 3 from 1080403012 into seg 3 loaded --- go back to smaller outer gap plasma into rampdown --- outer gap good
Apr 3 2008 01:42:33:103PM	1080403017	Jim Irby	increased programmed gas a little in seg01 --- hards early on 16 loaded plasma into rampdown ---- hards better
Apr 3 2008 01:50:22:133PM	1080403018	Jim Irby	no dpcs changes plasma into rampdown --- lots of injections --- lucky to have survived
Apr 3 2008 02:10:24:620PM	1080403019	Jim Irby	nl_04 request back to 7e19/m^2 -- hope higher power will continue to tame the MARFE. loaded plasma into rampdown
Apr 3 2008 02:28:10:400PM	1080403020	Jim Irby	dcps repeat -- ICRF power change nitrogen coming up again --- cooling reduced at t=10 minutes waiting for m28 to come back down physop ready button pushed at t=19 minutes -- m28 lower than on previous shot plasma into rampdown ---
Apr 3 2008 02:39:37:777PM	1080403021	Robert Granetz	Granetz taking over as physics operator for Jim Irby for an hour or so. Jim has already made all DPCS changes for shot 21.
Apr 3 2008 03:21:30:573PM	1080403021	Robert Granetz	Shot 21 -- Plasma. Good shot. Next shot: Switch to inner wall limited. Session leader requests 1070626020. I couldn't find a more recent one, so I'll bite the bullet and load his and update all the magnetics estimators. It was in segment 2, and I'll load it into segment 2. The routine DPCS_FTAE2 will remain active, since I only imported segment 2.
Apr 3 2008 04:06:14:133PM	1080403021	Jim Irby	nl_04_request to 6e19/m^2 from 7e19/m^2
Apr 3 2008 03:08:24:040PM	1080403022	Robert Granetz	Shot 22 -- Plasma. Good shot. Inner wall limited, 0.6 MA, 5.9 T, all as requested. Prf=2.5 MW (using all three antennas) Next shot: no DPCS changes
Apr 3 2008 03:28:45:370PM	1080403023	Robert Granetz	Shot 23 -- Plasma. Good shot. Inner wall limited. Prf=2.5 MW, no faults. Next shot: decrease nl_04 to 0.6e20 m-2 (from 0.7)
Apr 3 2008 03:47:01:277PM	1080403024	Robert Granetz	Shot 24 -- Plasma. Good shot. Inner wall limited. Prf=2.5 MW. Next shot: no DPCS changes
Apr 3 2008 03:54:48:837PM	1080403025	Robert Granetz	Shot 25 -- Plasma. Good shot. Inner wall limited. Prf=2.0 MW. Next shot: no DPCS changes
Apr 3 2008 04:15:30:573PM	1080403026	Jim Irby	plasma for 0.287 s
Apr 3 2008 04:19:55:290PM	1080403026	Robert Granetz	Shot 26 -- Plasma, but terminated very early. The cryopump was being prepared for operation on the next shot, but it caused a sharp rise in N2 in the vessel prior to this shot. We waited until the N2 came back to normal levels, but we suspect that this still caused this shot to radiate to an early death. Next shot: Jim Irby will take over as physics operator again.
Apr 3 2008 04:33:11:417PM	1080403027	Jim Irby	seg2 off, seg3 on --- back to upper null cryopump at ln2 temps --- LHe has been purged plasma into rampdown
Apr 3 2008 04:42:20:430PM	1080403028	Jim Irby	This shot will be with cryopump prefill to 54 ms loaded helium following continuously to make sure we continue to pump m28,32,etc very low bp 1.2e-7 Torr no power shot ---- cryopump dumped and got to the 1e-5 Torr range
Apr 3 2008 05:04:38:260PM	1080403029	Jim Irby	try again with cryopump bp 9.5e-8 Torr as we entered INIT bp 9.3e-8 Torr in CHECK plasma for 0.72 s ----
Apr 3 2008 05:21:20:510PM	1080403030	Jim Irby	another try with the cryopump prefill to 59 ms plasma into rampdown --- 3.7 MW of ICRF

Engineering Operator Comments
Shot	Time	Type	Status	Comment
1	09:05:04:600AM	Plasma	Bad	TMX breakers were open
2	09:18:31:913AM	Plasma	Ok
3	09:33:07:290AM	Plasma	Ok
4	09:48:34:603AM	Plasma	Ok
5	10:02:47:070AM	Plasma	Ok
6	10:15:20:117AM	Plasma	Ok
7	10:28:15:900AM	Plasma	Ok
8	10:55:49:820AM	Plasma	Ok
9	11:08:52:477AM	Plasma	Ok
10	11:23:26:150AM	Plasma	Ok
11	11:38:38:623AM	Plasma	Ok
12	11:51:28:940AM	Plasma	Ok
13	12:20:46:853PM	Plasma	Ok
14	12:33:09:150PM	Plasma	Ok
15	12:58:26:523PM	Plasma	Ok
16	01:12:22:853PM	Plasma	Ok
17	01:27:31:760PM	Plasma	Ok
18	01:40:50:823PM	Plasma	Ok
19	01:59:05:040PM	Plasma	Ok
20	02:23:27:883PM	Plasma	Ok
21	02:42:21:370PM	Plasma	Ok
22	02:59:50:883PM	Plasma	Ok
23	03:12:29:977PM	Plasma	Ok
24	03:29:15:243PM	Plasma	Ok
25	03:42:20:680PM	Plasma	Ok
26	04:06:20:133PM	Plasma	Ok
27	04:22:19:353PM	Plasma	Ok
28	04:38:35:620PM	Plasma	Bad	Cryopump Problems
29	04:52:11:073PM	Plasma	Ok
30	05:04:28:743PM	Plasma	Ok