Alcator C-Mod Run 1120815 Information

Miniproposals

Miniproposal: 709

Date Filed: 6/22/2012

Title: Pedestal profile and fluctuation evolution in ELMy H-Mode

First Author: Ahmed Diallo

Session Leader: Ahmed Diallo (shots 1-34)

Session Leader: Jerry Hughes (shots 17-26)

Operators
Session leader(s):	Ahmed Diallo,Jerry Hughes
Physics operator(s):	Greg Wallace
Engineering operator(s):	Bill Cochran,Sam Pierson,Thomas Toland

Engineering Operator Run Comment
Pedestal profile and fluctuation evolution in ELMy H-Mode

Session Leader Plans

Physics Operators Plans

Entered: Aug 14 2012 03:07:16:353PM

Author: Greg Wallace

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

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

Power systems as on: 1120621025

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

Gas setup:

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

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

Torvac gatevalve toggle (yes/no): no

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

Vessel temperature: 35/35/35

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

------------------------------
PO Setup
------------------------------
Load from 1120621025 and increase target nl_04 to 1e20. Seg 1 is startup, seg 4 is active.

Session Leader Summaries

Entered: Aug 15 2012 05:50:55:503PM

Author: Ahmed Diallo

The run was overall successful.
We marched through the run plan. The day started with good EDA-H modes during which the ASP probe was scanned and dwelled (near the limiter). We also obtained good fluctuation data with both GPI systems, and reflectometer. During the EDA-M mode part of the run plan, we conditioned the LH antenna to observe the density pumpout at the pedestal.This was no successful. The LH was kept in order to get fluctuation suppression data. Part II of the run plan started with a scan in density to decrease the collisionality. At nl04 = 0.5, and with reduced ICRF power, we observed ELMs. The remainder of the run day focused on slowing down the ELM frequency for both good profile reconstructions and enough time resolution to characterize the inter-ELM fluctuations.We used all the tricks in the bag with no success. This was made difficult as the wall condition deteriorated toward the end of the day. Overall, we accumulated enough data for analysis of the pedestal evolution.

Physics Operator Summaries

Entered: Aug 15 2012 05:12:52:280PM

Author: Greg Wallace

Today's run was very successful. C-Mod and all subsystems were operating properly. 34 shot cycles, 32 plasmas, and two fizzles. The first fizzle was fixed by reducing the early PG4 puff, and the second was corrected by undoing the first fix. PG4 puffs were at 18 ms for shots 1-2 and 8-34 and 16 ms for shots 3-7. We were running the JFT2M all day and had many discharges with ELMs. The first few shots had a very good confinement mode around 1.3 s as the outer divertor leg hit the shelf, but this behaviour disappeared with no input from the physop.

Session Leader Comments

Aug 15 2012 07:59:53:333AM Ahmed Diallo Shot plan:

I. Load from 1120621025.
Apply ICRF 3 MW from 0.6 until end of discharge.
Adjust ICRF between 2 -3 MW to insure good coupling
Achieve EDA-H mode with JFT-2M shape (3-6 shots)
Dwell the magnetic probes (start time tbd)
Verify passive diagnostics (shoelace antenna)

II. Establish a good baseline for the fluctuations diagnostics
CXRS
GPI start puff at 1.2 s
Plunge probe at 1.2 s (this will be determined on the shot to shot basis)

III. Start LH (700 kW) at 1.0 s (2 shots)
Stop gas puffs and probe plunges to achieve a LH base case
If successful
Initiate probe plunges at different times (TBD)
Start GPI

IV. Start density scan
nl04 = 0.9 to 0.5 in steps of 0.1 (2 shots each)
Find a suitable ELMy H-mode through this scan
Repeat at constant ICRF
Try LH (700 kW) at 1.0 s (if time permitting)
Make sure all the fluctuations diagnostics have good data
(SL will direct changes to ICRF, LHRF programs, puff timing for NINJA based diagnostics)

Aug 15 2012 09:23:05:347AM 1120815001 Ahmed Diallo Good first shot
Overall matched target shot 1120621025
Increased stored energy at 1.2s
Looks like EDA-H mode was achieved.

Aug 15 2012 09:28:05:650AM 1120815002 Ahmed Diallo Repeat with Ar puff for HIREX

Results:
Disruption!

Aug 15 2012 09:28:15:123AM 1120815002 Ahmed Diallo Repeat with Ar puff for HIREX

Results:
Disruption!

Aug 15 2012 09:43:38:887AM 1120815003 Ahmed Diallo Repeat with reduced gas puff

Results:
Good repeat with enhanced pedestal at 1.27s

Aug 15 2012 09:57:50:370AM 1120815004 Ahmed Diallo Repeat
Scan ASP probe: 0.95s & 1.27s
GPI start at 1.2 s

Results:

Drop in Wmhd at 1.15 s due to small glitch in Halpha

Aug 15 2012 10:09:58:507AM 1120815005 Ahmed Diallo Repeat:

Results:
Good
same as previous shot

Aug 15 2012 10:22:05:187AM 1120815006 Ahmed Diallo Repeat with only one probe plunge and keeping GPI

Results:
The spike in Halpha remains at 1.23s

Aug 15 2012 10:35:18:527AM 1120815007 Ahmed Diallo Repeat:

Revert to the dwell the ASP probe.
Delay GPI to 1.3s to avoid confusion with Halpha glitch

Results:
Fizzle

Aug 15 2012 10:55:20:690AM 1120815008 Ahmed Diallo Repeat!

Results:
The glitch tracks the GPI puff.

Aug 15 2012 11:07:19:263AM 1120815009 Ahmed Diallo Rescan the ASP probe
Stop NINJA gas

Results:
No ASP scan
The glitch is still there.
We will proceed in our scan to accumulate fluctuation data

Aug 15 2012 11:19:39:917AM 1120815010 Ahmed Diallo Repeat
Good shot.

Aug 15 2012 11:34:41:713AM 1120815011 Ahmed Diallo Try LH at 980 ms to create an overlap with ASP probe.

Results:
No LH coupling otherwise good shot.

Aug 15 2012 11:59:23:180AM 1120815012 Ahmed Diallo Delay LH to 1.3s
Start the density scan with nl04 = 0.9

Good

Aug 15 2012 12:09:24:050PM 1120815013 Ahmed Diallo Drop nl04 to 0.8

Results:
Good: Steadily decreasing the density

Aug 15 2012 12:32:33:337PM 1120815014 Ahmed Diallo Decrease nl04 = 0.7

Results:
Spike in dalpha at 0.9s back transition!

Aug 15 2012 12:37:13:353PM 1120815015 Ahmed Diallo nl04 = 0.6
Outer gap has been increased (see PO)
Results:
More back transitions. Coupling difficulties in ICRF after 1.0 s

Aug 15 2012 12:54:16:687PM 1120815017 Jerry Hughes I am filling in as SL while Ahmed has a conference call.

Shot 17 will be a locked-mode calibration shot for hirexsr.

Aug 15 2012 01:42:30:703PM 1120815018 Jerry Hughes Shot 18.

Repeat shot 16 with a lower initial RF power.

Result: Looks like some ELMS.
Some nice modes visible on the ASP mag head.

Aug 15 2012 01:40:27:457PM 1120815019 Jerry Hughes Shot 19

Excellent. Steady phase with with somewhat irregular ELMs form 0.8 to 0.95s.
An ok phase from 1.05 to 1.15.

Got ASP plunges, 1 pre-ELMs and 2 after ELMs begin.

Confinement degrades and ELMs disappear around the time of the He NINJA puff.
JT didn't get data, so we will try again.

No LH.

Aug 15 2012 01:46:28:250PM 1120815020 Jerry Hughes Shot 20.

Very nice regular ELMy period obtained with only 2MW ICRF from about 0.8 to 1.0s.

Aug 15 2012 02:40:08:390PM 1120815021 Jerry Hughes Shot 21

Made RF constant at 2MW throughout flattop.

Good long ELMy H-mode, variable ELM frequency.

He puff raises density late.

Aug 15 2012 02:51:11:683PM 1120815022 Jerry Hughes Shot 22

RF still constant at 2MW throughout flattop.

Good long ELMy H-mode, variable ELM frequency.

He + D2 puff this time, larger density rise.

Aug 15 2012 02:52:41:547PM 1120815023 Jerry Hughes Shot 23

RF still constant at 2MW throughout flattop.

Long ELMy H-mode, very fast ELMs. D2 puff only with reduced density rate of
rise. ELMs sustained, and perhaps slowed by the density rise.

ASP is in dwell mode. Getting good data.

Aug 15 2012 03:03:42:667PM 1120815024 Jerry Hughes Shot 24

RF still constant at 2MW throughout flattop.

Nice long ELM period between 0.72 and 0.76, with 3 Thomson points included.

A D2 puff was added at 0.72s. H-mode is killed too soon.

Aug 15 2012 03:06:25:807PM 1120815025 Jerry Hughes Shot 25

Attempted to add some feedback to control the density in H-mode, and
continued with D2 from NINJA.

RF faulting early. Density is not well controlled. Good ELMs early.

Aug 15 2012 03:38:00:520PM 1120815026 Ahmed Diallo Changed the density programming to be 0.7
Results:
Fast ELMs

Aug 15 2012 03:39:29:273PM 1120815027 Ahmed Diallo Modulate ICRF to get three H-modes
Results:
Good good ELMs in the second phase

Aug 15 2012 03:51:27:337PM 1120815028 Ahmed Diallo Repeat with three H-mode phases

Results:
Second ICRF phase has two good ELMs
Not so great!

Aug 15 2012 05:14:18:900PM 1120815029 Ahmed Diallo Extend the second ICRF until the 1.5s
Puff He and D2 at 1.2s

Results:
Good but not enough ELMs

Aug 15 2012 05:16:06:150PM 1120815030 Ahmed Diallo adding a ramp to 4 MW on the ICRF at 1.1

Results:
Yet not able to reduce the ELM frequency

Aug 15 2012 05:18:30:223PM 1120815031 Ahmed Diallo Extend the ICRF through the discharge starting at 0.6s
Add the ramp to 4 MW at 1.1s

Result;
Occurrence of ELMs
with slight reduction of frequency during the ramp up

Aug 15 2012 05:19:34:773PM 1120815032 Ahmed Diallo Start the ramp at 1s with the NINJA puffs

result:
very small and very fast ELMs

Aug 15 2012 05:21:19:783PM 1120815033 Ahmed Diallo Extend the LH

Result:
Too many trips
Few grassy ELMs around 0.6s

Aug 15 2012 05:22:29:253PM 1120815034 Ahmed Diallo Last shot
Revert to shot 32
adding NINJ puffs
Result:

Few good ELMs

Physics Operator Comments

Aug 15 2012 09:18:20:460AM 1120815001 Greg Wallace Changes: Load seg 1 from 1120810018 (2012 non-cryopump startup) into seg 1 ON.
Load seg 4 from 1120621025 (0.9 MA JFT2M) into seg 2 ON. Increase NL_04 demand to 1e20.
Load seg 3 from 1120807033 (0.8 MA LSN locked mode) into seg 3 OFF.

Result: Plasma through rampdown. Startup looks OK. Strange "transition" from H-mode to better H-mode at 1.3 s.

Next shot: Enable 50 ms PG1 Ar puff. Otherwise repeat.

Aug 15 2012 09:26:53:560AM 1120815002 Greg Wallace Changes: Enable 50 ms PG1 Ar puff. Otherwise repeat.

Result: Fizzle. Lots of CIII emission starting at 10 ms. F-side pressure is 25% higher than shot 1.

Next shot: Reduce early PG4 puff from 18 to 16 ms.

Aug 15 2012 09:42:15:093AM 1120815003 Greg Wallace Changes: Reduce early PG4 puff from 18 to 16 ms.

Result: Plasma. Still have sudden increase in confinement around 1.3 s as outer leg of x-point hits the inner divertor shelf.

Next shot: Repeat. No DPCS changes.

Aug 15 2012 09:55:39:727AM 1120815004 Greg Wallace Changes: Repeat. No DPCS changes.

Result: Plasma. Current ramp is a little slow starting at ~12 ms. No increase in confinement at 1.3 s this time---seems to be correlated with the outer leg not hitting the shelf as it did in the earlier shots?

Next shot: Repeat. No DPCS changes.

Aug 15 2012 10:10:00:660AM 1120815005 Greg Wallace Changes: Repeat. No DPCS changes.

Result: Plasma. Still some hesitation in the current ramp at ~15 ms. Will keep watching for now. Again the confinement drops at ~1.2 s and outer divertor leg does not hit the shelf until ~1.5 s. No programmed changes in RXL or ZXL during flat top. Suspect the scanning probes may be the source of the problem.

Next shot: Repeat without second scanning probe plunge. No DPCS changes.

Aug 15 2012 10:29:23:880AM 1120815006 Greg Wallace Changes: Repeat without second scanning probe plunge. No DPCS changes.

Result: Plasma. Still have problem with confinement decreasing at 1.24 s.

Next shot: Increase seg 2 TF current from 153567 A to 155304 A to increase TF from 5.5136 T to 5.5760 T.

Aug 15 2012 10:40:18:240AM 1120815007 Greg Wallace Changes: Increase seg 2 TF current from 153567 A to 155304 A to increase TF from 5.5136 T to 5.5760 T.

Result: Fizzle. Lots of CIII emission.

Next shot: Increase early PG4 puff from 16 to 18 ms.

Aug 15 2012 10:53:29:383AM 1120815008 Greg Wallace Changes: Increase early PG4 puff from 16 to 18 ms.

Result: Plasma. Still having decrease in confinement, about 1.3 s on this shot.

Next shot: Repeat. No DPCS changes.

Aug 15 2012 11:14:47:187AM 1120815009 Greg Wallace Changes: Repeat. No DPCS changes.

Result: Plasma.

Next shot: No DPCS changes.

Aug 15 2012 11:21:44:090AM 1120815010 Greg Wallace Changes: No DPCS changes.

Result: Plasma. Still having decrease in confinement at 1.3 s.

Next shot: No DPCS changes. Add LH from 0.98 to 1.48 s.

Aug 15 2012 11:39:31:303AM 1120815011 Greg Wallace Changes: No DPCS changes. Add LH from 0.98 to 1.48 s.

Result: Plasma. LH faulted out.

Next shot: Decrease target nl_04 to 0.9e20. Move LH pulse to 1.4-1.5 s. Turn off D-port and increase power from E- and J-port accordingly.

Aug 15 2012 11:59:43:340AM 1120815012 Greg Wallace Changes: Decrease target nl_04 to 0.9e20. Move LH pulse to 1.4-1.5 s. Turn off D-port and increase power from E- and J-port accordingly.

Result: Plasma. Didn't quite get the lower density we wanted.

Next shot: Decrease nl_04 target to 0.8e20.

Aug 15 2012 12:12:03:027PM 1120815012 Greg Wallace Changes: Decrease nl_04 target to 0.8e20.

Result: Plasma.

Next shot: Decrease nl_04 target to 0.7e20.

Aug 15 2012 12:37:00:633PM 1120815014 Greg Wallace Changes: Decrease nl_04 target to 0.7e20.

Result: Plasma.

Next shot: Increase outer gap between 1.35 and 1.5 s by decreasing RCUR from 0.660 to 0.6575 to see if that helps with LH breakdown. Decrease nl_04 demand to 0.6e20.

Aug 15 2012 12:45:27:773PM 1120815015 Greg Wallace Changes: Increase outer gap between 1.35 and 1.5 s by decreasing RCUR from 0.660 to 0.6575 to see if that helps with LH breakdown. Decrease nl_04 demand to 0.6e20.

Result: Plasma. LH had fewer faults with bigger outer gap.

Next shot: Decrease nl_04 demand to 0.5e20. Increase outer gap by an additional 5mm (decrease RCUR from 0.6575 to 0.655) during LH pulse.

Aug 15 2012 12:52:50:597PM 1120815016 Greg Wallace Changes: Decrease nl_04 demand to 0.5e20. Increase outer gap by an additional 5mm (decrease RCUR from 0.6575 to 0.655) during LH pulse.

Result: Plasma. LH looks much better with bigger outer gap.

Next shot: Locked mode shot. Turn seg 2 off and seg 3 on. Reduce PG1 puff from 300 ms to 200 ms.

Aug 15 2012 01:02:54:203PM 1120815017 Greg Wallace Changes: Locked mode shot. Turn seg 2 off and seg 3 on. Reduce PG1 puff from 300 ms to 200 ms.

Result: Plasma. Good locked mode.

Next shot: Re-run shot 16. Turn off seg 3 and turn on seg 2.

Aug 15 2012 01:25:09:370PM 1120815018 Greg Wallace Changes: Re-run shot 16. Turn off seg 3 and turn on seg 2.

Result: Plasma. ELMs! Clean LH pulse. ICRF coupling seems to have been perturbed by ELMs. No ELMs during LH---possibly due to NINJA puff, bigger outer gap, or LH?

Next shot: No DPCS changes.

Aug 15 2012 01:39:57:560PM 1120815019 Greg Wallace Changes: No DPCS changes.

Result: Plasma. No LH due to klystron body current fault.

Next shot: Repeat. No DPCS changes.

Aug 15 2012 01:58:29:197PM 1120815020 Greg Wallace Changes: Repeat. No DPCS changes.

Result: Plasma.

Next shot: No DPCS changes.

Aug 15 2012 02:08:26:107PM 1120815021 Greg Wallace Changes: No DPCS changes.

Result: Plasma.

Next shot: No DPCS changes.

Aug 15 2012 02:23:14:810PM 1120815022 Greg Wallace Changes: No DPCS changes.

Result: Plasma.

Next shot: No DPCS changes.

Aug 15 2012 02:36:54:077PM 1120815023 Greg Wallace Changes: No DPCS changes.

Result: Plasma. Poor LH coupling. Looks like too little density now that NINJA puff has moved.

Next shot: Increase RCUR from 0.655 to 0.6575 to improve LH coupling.

Aug 15 2012 02:51:16:313PM 1120815024 Greg Wallace Changes: Increase RCUR from 0.655 to 0.6575 to improve LH coupling.

Result: Plasma. No LH due to HV module failure.

Next shot: Increase nl_04 demand to 1e20 starting at 0.8 s.

Aug 15 2012 03:04:23:090PM 1120815025 Greg Wallace Changes: Increase nl_04 demand to 1e20 starting at 0.8 s.

Result: Plasma.

Next shot: Change nl_04 demand to 0.7e20 starting at 0.8 s.

Aug 15 2012 03:22:29:510PM 1120815026 Greg Wallace Changes: Change nl_04 demand to 0.7e20 starting at 0.8 s.

Result: Plasma.

Next shot: No DPCS changes.

Aug 15 2012 03:47:19:217PM 1120815027 Greg Wallace Changes: No DPCS changes.

Result: Plasma.

Next shot: No DPCS changes.

Aug 15 2012 03:55:53:250PM 1120815028 Greg Wallace Changes: No DPCS changes.

Result: Plasma.

Next shot: Decrease nl_04 demand to 0.5e20 during flattop.

Aug 15 2012 04:08:47:160PM 1120815029 Greg Wallace Changes: Decrease nl_04 demand to 0.5e20 during flattop.

Result: Plasma.

Next shot: No DPCS changes.

Aug 15 2012 04:21:43:250PM 1120815030 Greg Wallace Changes: No DPCS changes.

Result: Plasma.

Next shot: No DPCS changes.

Aug 15 2012 04:36:58:087PM 1120815031 Greg Wallace Changes: No DPCS changes.

Result: Plasma.

Next shot: Move LH pulse to 1.2-1.5 s. No DPCS changes.

Aug 15 2012 04:48:57:730PM 1120815032 Greg Wallace Changes: Move LH pulse to 1.2-1.5 s. No DPCS changes.

Result: Plasma.

Next shot: Move RCUR change from 1.35 s to 0.9 s. LH pulse will be 1.1-1.5 s.

Aug 15 2012 05:01:31:870PM 1120815033 Greg Wallace Changes: Move RCUR change from 1.35 s to 0.9 s. LH pulse will be 1.1-1.5 s.

Result: Plasma. LH faulted out.

Next shot: Reload shot 32 seg 2. LH timing 1.35-1.45 s.

Aug 15 2012 05:06:11:040PM 1120815033 Greg Wallace Changes: Reload shot 32 seg 2. LH timing 1.35-1.45 s.

Result: Plasma. Last shot of the day.

Engineering Operator Comments

Shot Time Type Status Comment

1 09:02:08:193AM Plasma Ok

2 09:18:24:753AM Plasma Ok

3 09:30:57:527AM Plasma Ok

4 09:44:10:390AM Plasma Ok

5 09:57:53:237AM Plasma Ok

6 10:10:39:250AM Plasma Ok

7 10:30:04:783AM Plasma Ok

8 10:42:53:147AM Plasma Ok

9 10:57:47:547AM Plasma Ok

10 11:10:20:243AM Plasma Ok

11 11:26:43:310AM Plasma Ok

12 11:41:01:570AM Plasma Ok

13 11:59:37:043AM Plasma Ok

14 12:14:00:573PM Plasma Ok

15 12:28:23:707PM Plasma Ok

16 12:42:45:950PM Plasma Ok

17 12:56:27:690PM Plasma Ok

18 01:10:58:277PM Plasma Ok

19 01:25:46:930PM Plasma Ok

20 01:39:56:680PM Plasma Ok

21 01:53:43:647PM Plasma Ok

22 02:08:35:073PM Plasma Ok

23 02:23:13:160PM Plasma Ok

24 02:36:48:190PM Plasma Ok

25 02:51:28:330PM Plasma Ok

26 03:05:05:343PM Plasma Ok

27 03:22:31:760PM Plasma Ok

28 03:37:40:820PM Plasma Ok

29 03:53:44:010PM Plasma Ok

30 04:09:29:903PM Plasma Ok

31 04:24:17:250PM Plasma Ok

32 04:37:31:163PM Plasma Ok

33 04:50:37:753PM Plasma Ok

34 05:02:56:320PM Plasma Ok

System Availability

Aug 15 2012 09:01:49:697AM

System Available Comment Availability
Changed Owner Description Who Can
Change
Active MHD no secured - tagged out Jun 2 2008 11:03:58:433AM (sears) Joe Snipes Active MHD Antenna golfit
BES yes BES system is online Nov 22 2011 02:21:12:050PM (bespam) Bill Rowan Beam Emission Spectroscopy bespam,liao,rowan
Bolometers yes Midplane diodes functioning properly. Midplane bolometers working and calibrated. DIV bolometers installed but not yet toaster calibrated Apr 20 2012 09:57:29:520AM (mlreinke) Matt Reinke Bolometers hutch,mlreinke
Boronization yes Jun 15 2012 05:02:46:313PM (dekow) Jim Irby Boronization dekow,irby
CECE yes The system is currently operational for Te tilde measurement. Talk to Choongki about the current configuration Jul 3 2012 04:38:00:317PM (nthoward) Anne White Correlation ECE nthoward,sck83,whitea
CNPA yes Multiple channel CNPA available, no safety risk for in-vessel access Apr 14 2011 12:01:59:693PM (parker) Ron Parker Compact Neutral Analyzer parker
Cryopump - Upper Divertor yes Jun 15 2012 05:02:31:550PM (dekow) Brian LaBombard Upper Divertor Cryopump dekow,irby,labombard
CXRS yes core-CXRS system is online Nov 22 2011 02:21:22:280PM (bespam) Bill Rowan Charge Exchange Spectroscopy bespam,blip,liao,rachmcd,rowan
CXRS edge yes Michael CHurchill has primary responsibility at the moment Apr 19 2011 11:44:46:247AM (blip) Bruce Lipshultz Measurement of CXR light in the pedestal region at both the high- and low-field sides blip,rmchurch
D Alpha yes \ha2_bright is available; \SPECTROSCOPY::TOP.VUV.VIS_SIGNALS:MCP_VIS_SIG1 is not available Jul 1 2009 09:45:41:090AM (terry) Jim Terry Balmer Alpha Monitor irby,terry,wolfe
Dalsa no system is is installed and aligned, but not functional (appears to be a broken cable) Dec 5 2011 02:41:42:867PM (marmar) Earl Marmar Visible Bremsstrahlung Imaging marmar
Disruption Mitigation yes two gas jet valves active as of Feb 2012 May 15 2012 10:09:23:597AM (granetz) Robert Granetz Gas Jet granetz,whyte
Divertor IR no Mar 6 2007 10:50:41:677AM Glen Wurden Divertor IR Digital Video gwurden,terry
Divertor IR Spectroscopy no Mar 6 2007 10:51:39:897AM Glen Wurden Divertor IR Spectroscopy gwurden,terry
DMBolo AXUV diodes yes Diodes are taking usable data. Not all post-processing code is working yet. Feb 1 2012 01:24:23:953PM (golynyk) Geoff Olynyk Set of six AXUV diodes in a toroidal array of midplane wall boxes. golynyk,granetz,mlreinke,whyte
DNB yes "The beam could break at any moment." May 15 2012 10:09:52:470AM (granetz) Robert Granetz Diagnostic Neutral Beam dterry,granetz,mochung
ECDC yes Apr 26 2012 03:23:19:057PM (dekow) Jim Irby 2.45 GHz, 3 kW, discharge cleaning system dekow,irby,pfeiffer
FRC-ECE yes FRC-ECE is online May 14 2012 11:53:01:693AM (bespam) Perry Phillips Heterodyne ECE-32 channels bespam,liao,phillips,rowan,whitea
FTCI yes System Operational May 14 2012 11:50:45:590AM (irby) Jim Irby Fast two-color interferometer irby
G-Side Ratiomatic yes Installed April 25,2012. New controller installed 5/29/2012 Jun 7 2012 10:40:00:957AM (toland) Brian LaBombard G-side ratiomatic ionization gauge labombard,toland
Glow Discharge no HV cables disconnected and power supplies off. Electrical plugs have been disconnected, capped and red tagged. Mar 5 2012 10:21:53:460AM (dekow) Jim Irby 1 kV, 5 A, glow discharge system dekow,dterry,irby
GPC yes Operational Apr 27 2012 07:41:46:907AM (hubbard) Amanda Hubbard ECE Polychromater hubbard
GPC2 yes Operational Apr 27 2012 07:42:03:317AM (hubbard) Amanda Hubbard ECE Polychromater hubbard
GPI yes The Xpt-view, the midplane-view cameras are operational. The innerwall GPI (coupled to the fast-diodes) is available. Jul 1 2009 09:45:50:933AM (terry) Jim Terry Gas Puff Imaging terry,zweben
H/D yes system is functional and taking data Dec 5 2011 02:42:29:857PM (marmar) Earl Marmar H/D Ratio marmar
HEAT yes Apr 26 2012 03:23:49:607PM (dekow) Gary Dekow - Machine Heaters - burke,dekow
Hirex Jr yes Hirex-Jr has been installed Jun 28 2010 03:36:33:420PM (rice) John Rice High Resolution X-Ray ince,rice
Hirex Sr yes Installed and aligned. Will be available for Ti/Vr profiles after focusing tests and locked modes are taken. Dec 6 2011 08:21:02:453AM (ypodpaly) John Rice High Resolution X-Ray cgao,ldelgado,rice,ypodpaly
HXR yes 32 Channels operational,, no safety risk for in-vessel access Apr 14 2011 12:05:24:810PM (parker) Ron Parker Hard X-Ray Array faust,parker,schmidt
ICRF D-Antenna yes May 31 2012 09:20:06:827AM (wukitch) Steve Wukitch D-port antenna wukitch,ylin
ICRF E-Antenna yes May 31 2012 09:19:57:640AM (wukitch) Steve Wukitch E-port antenna wukitch,ylin
ICRF J-Antenna yes May 31 2012 09:19:47:443AM (wukitch) Steve Wukitch J-port antenna wukitch,ylin
Impurity Spectroscopy yes Being upgraded with better optics and new spectrographs. Dan Miller has primary responsibility. Apr 19 2011 11:46:02:193AM (blip) Bruce Lipshultz Measurement of recycling light and impurity source rates at multiple surfaces around the tokamak blip,miller
Laser Blow-Off yes Pumped Down, Laser has not yet been tested but otherwise operational May 14 2012 04:31:17:037PM (nthoward) Martin Greenwald Impurity Injection System g,nthoward
Lower Hybrid yes LH is now available for plasma operation up to ~900 kW net power. Jul 3 2012 02:50:00:693PM (wallaceg) Ron Parker Lower Hybrid dterry,parker,wallaceg
Lower Hybrid Reflectometer no off Apr 15 2011 08:24:27:930AM (dominguez) Arturo Dominguez Lower Hybrid Reflectometer dominguez,marmar,parker,sgbaek
LoWEUS yes LoWEUS viewing the 10-30 nm region, spectral brightness vs. lambda and time are being stored in tree. Apr 20 2012 10:43:34:077AM (mlreinke) Matthew L. Reinke Long Wavelength Extreme Ultraviolet Spectrometer markchil,mlreinke
LPI no Beam line removed May 30 2008 02:09:12:833PM (bose) Earl Marmar Lithium Pellet Injector bose,marmar
Ly-alpha no Midplane Lyman-a not functioning. New B-PORT Lyman (BPLY) still being debugged. Jul 12 2012 08:52:28:233AM (mlreinke) Matt Reinke Lyman alpha cameras faustian,labombard,mlreinke
Magnetics yes Dec 1 2011 11:51:51:970AM (g) Robert Granetz Bp coils and flux loops for equilibrium control granetz,wolfe
McPherson no McPherson under vacuum but is not run on a day-to-day basis. Can be requested if desired. LoWEUS has taken over as the primary Mo monitor. Jul 12 2012 08:53:14:937AM (mlreinke) Jim Terry VUV Spectrometer markchil,mlreinke,terry
Michelson yes Vacuum 3-4e-8 T. Starting with Michelson at reduced speed. Apr 27 2012 07:42:41:960AM (hubbard) Amanda Hubbard ECE Te Profiles hubbard,schmidt
MKS yes Dec 2 2011 12:27:47:163PM (toland) Brian LaBombard Baratron pressure gauges labombard,toland
MLP yes Operational. Connected to A-port probe system May 10 2012 08:40:19:910AM (labombard) Brian LaBombard Mirror Langmuir Probe Electronics System labombard
MSE yes 2/29/2012 MSE operational. No HV or vacuum safety issues Feb 29 2012 12:26:13:863PM (sscott) Steve Scott Motional Stark Effect jinseok,sscott
Neutrons yes Voltage is on for He3 detectors on J port. Remaining voltages will be turned on for the first run. Apr 23 2012 09:31:22:063AM (fiore) Catherine Fiore Neutron Detectors fiore
Neuts and Hards yes All detectors Powered On --- Waiting for neutrons for calibration Nov 22 2011 01:05:24:380PM (irby) Jim Irby X-Ray/Neutron Detectors at K-Hor irby
NINJA yes C-bottom and new F-bottom system ready. Dec 2 2011 12:28:44:843PM (toland) Brian LaBombard NINJA gas puff labombard,terry,toland
PCI yes Operational. Jul 10 2012 07:08:06:883PM (ntsujii) Miklos Porkolab Phase Contrast Imaging emd,ennever,ntsujii,porkolab
Penning Gauges yes HV power supplies turned ON in INIT, off in RECOOL May 10 2012 08:41:03:000AM (labombard) Brian LaBombard Penning Ionization Gauges labombard
Plasma TV yes WIDE1, WIDE2 (chan 33), DANT, JANT and DIV are operational. Jul 1 2009 09:46:29:543AM (terry) Jim Terry Video of plasma via several cameras dekow,irby,terry,wolfe
Polarimeter yes 3 chords operational but with high noise level Jan 6 2012 04:22:20:903PM (irby) Jim Irby C-Mod Polarimeter irby
Power - Alternator Air Switch yes Apr 26 2012 03:24:21:607PM (dekow) Gary Dekow Alternator to Power Room Power Supply Connection cochran,dekow,dterry,irby
Power - PEI yes Apr 26 2012 03:24:41:250PM (dekow) Gary Dekow PEI System cochran,dekow,dterry,irby
Power - TMX yes Apr 26 2012 03:24:57:153PM (dekow) Gary Dekow Ef2s,. EFCs and A-Coils byford,cochran,dekow,dterry,irby
Power Systems yes Apr 26 2012 03:25:14:497PM (dekow) Jim Irby C-Mod Magnet Supplies byford,cochran,dekow,dterry,irby
Probe Array - ISD yes Operational. Some dead probes. May 10 2012 08:41:58:120AM (labombard) Brian Labombard Inner Lower Divertor Probe Array labombard
Probe Array - LH yes Operational. 4 out of 6 probes working. May 10 2012 08:41:40:557AM (labombard) Brian LaBombard Lower Hybrid Probe Array labombard
Probe Array - OSD yes Operational. May 10 2012 08:42:13:733AM (labombard) Brian LaBombard Outer Lower Divertor Probe Array (F and J) labombard
Probe Array - UDIV yes Operational. Some dead probes. May 10 2012 08:42:32:663AM (labombard) Brian LaBombard Upper Divertor Probe Array labombard
Reflectometer yes On 1120608, the high frequency channels: 112, 140 and the variable, have been disconnected for some troubleshooting. All other channels are connected Jun 14 2012 11:28:59:603AM (dominguez) Earl Marmar Reflectometer dominguez,marmar
Scanning Probe - ASP yes Operational. A variety of probe heads are ready for use. May 10 2012 08:43:10:937AM (labombard) Brian LaBombard A-Port Scanning Probe labombard
Scanning Probe - FSP yes Operational. May 10 2012 08:43:24:887AM (labombard) Brian LaBombard F-Port Scanning Probe labombard
Scanning Probe - WASP no Not functioning. Probe tips are melted. Repair not performed during break. May 10 2012 08:44:43:137AM (labombard) Brian LaBombard Inner Wall Scanning Probe labombard,nsmick
Shoelace Antenna yes Operational May 10 2012 08:45:08:320AM (labombard) Brian LaBombard High-k active MHD antenna, for QCM, WCM studies golfit,labombard
SOL reflectometer yes c-port (top, middle, bottom) and h-port available. Only 1 of 4 locations can be used for each discharge May 1 2012 04:54:58:820PM (cornwall) Cornwall Lau SOL reflectometer cornwall,wukitch,ylin
Sparker yes Sparker Power Supply powered up. Connected at K port using red cable 4/23/12 9:25AM Apr 23 2012 12:06:10:983PM (parkin) Jim Irby Field Emission Preionization for C-Mod dekow,irby,parkin
Surface Science Station yes SSS is under vacuum and fully available. Jul 3 2012 02:46:59:753PM (ochoukov) Bruce Lipschultz Radially scanning probe located on K-port blip,ochoukov
TCI yes TCI lasers in operation May 14 2012 11:51:18:700AM (irby) Jim Irby Two-Color Interferometer irby,murray
TS - Core yes Operating with both lasers, density calibration ongoing. Jul 19 2012 10:20:09:220AM (jrwalk) Jerry Hughes Core Thomson scattering jrwalk,jwhughes,yma
TS - Edge yes Operating with both lasers, density calibration ongoing. Jul 19 2012 10:20:28:323AM (jrwalk) Jerry Hughes Millimeter resolution edge Thomson scattering jrwalk,jwhughes,yma
Vispec no 350 and 670 nm, 4 spatial channels Nov 28 2007 09:58:35:493AM (agraf) Alex Graf Visible Spectrometer agraf
XEUS yes XEUS viewing the 1-6 nm region, spectral brightness vs. lambda and time are being stored in tree. Apr 20 2012 10:43:43:107AM (mlreinke) Matt Reinke X-ray Extended Ultraviolet Spectrometer markchil,mlreinke
XTOMO yes ARRAY1->5 available. Specific channels on various arrays display issues. Apr 20 2012 05:36:28:523PM (faustian) Robert Granetz X-Ray Tomography faustian,granetz,mlreinke

Session Leader Comments
Aug 15 2012 07:59:53:333AM		Ahmed Diallo	Shot plan: I. Load from 1120621025. Apply ICRF 3 MW from 0.6 until end of discharge. Adjust ICRF between 2 -3 MW to insure good coupling Achieve EDA-H mode with JFT-2M shape (3-6 shots) Dwell the magnetic probes (start time tbd) Verify passive diagnostics (shoelace antenna) II. Establish a good baseline for the fluctuations diagnostics CXRS GPI start puff at 1.2 s Plunge probe at 1.2 s (this will be determined on the shot to shot basis) III. Start LH (700 kW) at 1.0 s (2 shots) Stop gas puffs and probe plunges to achieve a LH base case If successful Initiate probe plunges at different times (TBD) Start GPI IV. Start density scan nl04 = 0.9 to 0.5 in steps of 0.1 (2 shots each) Find a suitable ELMy H-mode through this scan Repeat at constant ICRF Try LH (700 kW) at 1.0 s (if time permitting) Make sure all the fluctuations diagnostics have good data (SL will direct changes to ICRF, LHRF programs, puff timing for NINJA based diagnostics)
Aug 15 2012 09:23:05:347AM	1120815001	Ahmed Diallo	Good first shot Overall matched target shot 1120621025 Increased stored energy at 1.2s Looks like EDA-H mode was achieved.
Aug 15 2012 09:28:05:650AM	1120815002	Ahmed Diallo	Repeat with Ar puff for HIREX Results: Disruption!
Aug 15 2012 09:28:15:123AM	1120815002	Ahmed Diallo	Repeat with Ar puff for HIREX Results: Disruption!
Aug 15 2012 09:43:38:887AM	1120815003	Ahmed Diallo	Repeat with reduced gas puff Results: Good repeat with enhanced pedestal at 1.27s
Aug 15 2012 09:57:50:370AM	1120815004	Ahmed Diallo	Repeat Scan ASP probe: 0.95s & 1.27s GPI start at 1.2 s Results: Drop in Wmhd at 1.15 s due to small glitch in Halpha
Aug 15 2012 10:09:58:507AM	1120815005	Ahmed Diallo	Repeat: Results: Good same as previous shot
Aug 15 2012 10:22:05:187AM	1120815006	Ahmed Diallo	Repeat with only one probe plunge and keeping GPI Results: The spike in Halpha remains at 1.23s
Aug 15 2012 10:35:18:527AM	1120815007	Ahmed Diallo	Repeat: Revert to the dwell the ASP probe. Delay GPI to 1.3s to avoid confusion with Halpha glitch Results: Fizzle
Aug 15 2012 10:55:20:690AM	1120815008	Ahmed Diallo	Repeat! Results: The glitch tracks the GPI puff.
Aug 15 2012 11:07:19:263AM	1120815009	Ahmed Diallo	Rescan the ASP probe Stop NINJA gas Results: No ASP scan The glitch is still there. We will proceed in our scan to accumulate fluctuation data
Aug 15 2012 11:19:39:917AM	1120815010	Ahmed Diallo	Repeat Good shot.
Aug 15 2012 11:34:41:713AM	1120815011	Ahmed Diallo	Try LH at 980 ms to create an overlap with ASP probe. Results: No LH coupling otherwise good shot.
Aug 15 2012 11:59:23:180AM	1120815012	Ahmed Diallo	Delay LH to 1.3s Start the density scan with nl04 = 0.9 Good
Aug 15 2012 12:09:24:050PM	1120815013	Ahmed Diallo	Drop nl04 to 0.8 Results: Good: Steadily decreasing the density
Aug 15 2012 12:32:33:337PM	1120815014	Ahmed Diallo	Decrease nl04 = 0.7 Results: Spike in dalpha at 0.9s back transition!
Aug 15 2012 12:37:13:353PM	1120815015	Ahmed Diallo	nl04 = 0.6 Outer gap has been increased (see PO) Results: More back transitions. Coupling difficulties in ICRF after 1.0 s
Aug 15 2012 12:54:16:687PM	1120815017	Jerry Hughes	I am filling in as SL while Ahmed has a conference call. Shot 17 will be a locked-mode calibration shot for hirexsr.
Aug 15 2012 01:42:30:703PM	1120815018	Jerry Hughes	Shot 18. Repeat shot 16 with a lower initial RF power. Result: Looks like some ELMS. Some nice modes visible on the ASP mag head.
Aug 15 2012 01:40:27:457PM	1120815019	Jerry Hughes	Shot 19 Excellent. Steady phase with with somewhat irregular ELMs form 0.8 to 0.95s. An ok phase from 1.05 to 1.15. Got ASP plunges, 1 pre-ELMs and 2 after ELMs begin. Confinement degrades and ELMs disappear around the time of the He NINJA puff. JT didn't get data, so we will try again. No LH.
Aug 15 2012 01:46:28:250PM	1120815020	Jerry Hughes	Shot 20. Very nice regular ELMy period obtained with only 2MW ICRF from about 0.8 to 1.0s.
Aug 15 2012 02:40:08:390PM	1120815021	Jerry Hughes	Shot 21 Made RF constant at 2MW throughout flattop. Good long ELMy H-mode, variable ELM frequency. He puff raises density late.
Aug 15 2012 02:51:11:683PM	1120815022	Jerry Hughes	Shot 22 RF still constant at 2MW throughout flattop. Good long ELMy H-mode, variable ELM frequency. He + D2 puff this time, larger density rise.
Aug 15 2012 02:52:41:547PM	1120815023	Jerry Hughes	Shot 23 RF still constant at 2MW throughout flattop. Long ELMy H-mode, very fast ELMs. D2 puff only with reduced density rate of rise. ELMs sustained, and perhaps slowed by the density rise. ASP is in dwell mode. Getting good data.
Aug 15 2012 03:03:42:667PM	1120815024	Jerry Hughes	Shot 24 RF still constant at 2MW throughout flattop. Nice long ELM period between 0.72 and 0.76, with 3 Thomson points included. A D2 puff was added at 0.72s. H-mode is killed too soon.
Aug 15 2012 03:06:25:807PM	1120815025	Jerry Hughes	Shot 25 Attempted to add some feedback to control the density in H-mode, and continued with D2 from NINJA. RF faulting early. Density is not well controlled. Good ELMs early.
Aug 15 2012 03:38:00:520PM	1120815026	Ahmed Diallo	Changed the density programming to be 0.7 Results: Fast ELMs
Aug 15 2012 03:39:29:273PM	1120815027	Ahmed Diallo	Modulate ICRF to get three H-modes Results: Good good ELMs in the second phase
Aug 15 2012 03:51:27:337PM	1120815028	Ahmed Diallo	Repeat with three H-mode phases Results: Second ICRF phase has two good ELMs Not so great!
Aug 15 2012 05:14:18:900PM	1120815029	Ahmed Diallo	Extend the second ICRF until the 1.5s Puff He and D2 at 1.2s Results: Good but not enough ELMs
Aug 15 2012 05:16:06:150PM	1120815030	Ahmed Diallo	adding a ramp to 4 MW on the ICRF at 1.1 Results: Yet not able to reduce the ELM frequency
Aug 15 2012 05:18:30:223PM	1120815031	Ahmed Diallo	Extend the ICRF through the discharge starting at 0.6s Add the ramp to 4 MW at 1.1s Result; Occurrence of ELMs with slight reduction of frequency during the ramp up
Aug 15 2012 05:19:34:773PM	1120815032	Ahmed Diallo	Start the ramp at 1s with the NINJA puffs result: very small and very fast ELMs
Aug 15 2012 05:21:19:783PM	1120815033	Ahmed Diallo	Extend the LH Result: Too many trips Few grassy ELMs around 0.6s
Aug 15 2012 05:22:29:253PM	1120815034	Ahmed Diallo	Last shot Revert to shot 32 adding NINJ puffs Result: Few good ELMs

Physics Operator Comments
Aug 15 2012 09:18:20:460AM	1120815001	Greg Wallace	Changes: Load seg 1 from 1120810018 (2012 non-cryopump startup) into seg 1 ON. Load seg 4 from 1120621025 (0.9 MA JFT2M) into seg 2 ON. Increase NL_04 demand to 1e20. Load seg 3 from 1120807033 (0.8 MA LSN locked mode) into seg 3 OFF. Result: Plasma through rampdown. Startup looks OK. Strange "transition" from H-mode to better H-mode at 1.3 s. Next shot: Enable 50 ms PG1 Ar puff. Otherwise repeat.
Aug 15 2012 09:26:53:560AM	1120815002	Greg Wallace	Changes: Enable 50 ms PG1 Ar puff. Otherwise repeat. Result: Fizzle. Lots of CIII emission starting at 10 ms. F-side pressure is 25% higher than shot 1. Next shot: Reduce early PG4 puff from 18 to 16 ms.
Aug 15 2012 09:42:15:093AM	1120815003	Greg Wallace	Changes: Reduce early PG4 puff from 18 to 16 ms. Result: Plasma. Still have sudden increase in confinement around 1.3 s as outer leg of x-point hits the inner divertor shelf. Next shot: Repeat. No DPCS changes.
Aug 15 2012 09:55:39:727AM	1120815004	Greg Wallace	Changes: Repeat. No DPCS changes. Result: Plasma. Current ramp is a little slow starting at ~12 ms. No increase in confinement at 1.3 s this time---seems to be correlated with the outer leg not hitting the shelf as it did in the earlier shots? Next shot: Repeat. No DPCS changes.
Aug 15 2012 10:10:00:660AM	1120815005	Greg Wallace	Changes: Repeat. No DPCS changes. Result: Plasma. Still some hesitation in the current ramp at ~15 ms. Will keep watching for now. Again the confinement drops at ~1.2 s and outer divertor leg does not hit the shelf until ~1.5 s. No programmed changes in RXL or ZXL during flat top. Suspect the scanning probes may be the source of the problem. Next shot: Repeat without second scanning probe plunge. No DPCS changes.
Aug 15 2012 10:29:23:880AM	1120815006	Greg Wallace	Changes: Repeat without second scanning probe plunge. No DPCS changes. Result: Plasma. Still have problem with confinement decreasing at 1.24 s. Next shot: Increase seg 2 TF current from 153567 A to 155304 A to increase TF from 5.5136 T to 5.5760 T.
Aug 15 2012 10:40:18:240AM	1120815007	Greg Wallace	Changes: Increase seg 2 TF current from 153567 A to 155304 A to increase TF from 5.5136 T to 5.5760 T. Result: Fizzle. Lots of CIII emission. Next shot: Increase early PG4 puff from 16 to 18 ms.
Aug 15 2012 10:53:29:383AM	1120815008	Greg Wallace	Changes: Increase early PG4 puff from 16 to 18 ms. Result: Plasma. Still having decrease in confinement, about 1.3 s on this shot. Next shot: Repeat. No DPCS changes.
Aug 15 2012 11:14:47:187AM	1120815009	Greg Wallace	Changes: Repeat. No DPCS changes. Result: Plasma. Next shot: No DPCS changes.
Aug 15 2012 11:21:44:090AM	1120815010	Greg Wallace	Changes: No DPCS changes. Result: Plasma. Still having decrease in confinement at 1.3 s. Next shot: No DPCS changes. Add LH from 0.98 to 1.48 s.
Aug 15 2012 11:39:31:303AM	1120815011	Greg Wallace	Changes: No DPCS changes. Add LH from 0.98 to 1.48 s. Result: Plasma. LH faulted out. Next shot: Decrease target nl_04 to 0.9e20. Move LH pulse to 1.4-1.5 s. Turn off D-port and increase power from E- and J-port accordingly.
Aug 15 2012 11:59:43:340AM	1120815012	Greg Wallace	Changes: Decrease target nl_04 to 0.9e20. Move LH pulse to 1.4-1.5 s. Turn off D-port and increase power from E- and J-port accordingly. Result: Plasma. Didn't quite get the lower density we wanted. Next shot: Decrease nl_04 target to 0.8e20.
Aug 15 2012 12:12:03:027PM	1120815012	Greg Wallace	Changes: Decrease nl_04 target to 0.8e20. Result: Plasma. Next shot: Decrease nl_04 target to 0.7e20.
Aug 15 2012 12:37:00:633PM	1120815014	Greg Wallace	Changes: Decrease nl_04 target to 0.7e20. Result: Plasma. Next shot: Increase outer gap between 1.35 and 1.5 s by decreasing RCUR from 0.660 to 0.6575 to see if that helps with LH breakdown. Decrease nl_04 demand to 0.6e20.
Aug 15 2012 12:45:27:773PM	1120815015	Greg Wallace	Changes: Increase outer gap between 1.35 and 1.5 s by decreasing RCUR from 0.660 to 0.6575 to see if that helps with LH breakdown. Decrease nl_04 demand to 0.6e20. Result: Plasma. LH had fewer faults with bigger outer gap. Next shot: Decrease nl_04 demand to 0.5e20. Increase outer gap by an additional 5mm (decrease RCUR from 0.6575 to 0.655) during LH pulse.
Aug 15 2012 12:52:50:597PM	1120815016	Greg Wallace	Changes: Decrease nl_04 demand to 0.5e20. Increase outer gap by an additional 5mm (decrease RCUR from 0.6575 to 0.655) during LH pulse. Result: Plasma. LH looks much better with bigger outer gap. Next shot: Locked mode shot. Turn seg 2 off and seg 3 on. Reduce PG1 puff from 300 ms to 200 ms.
Aug 15 2012 01:02:54:203PM	1120815017	Greg Wallace	Changes: Locked mode shot. Turn seg 2 off and seg 3 on. Reduce PG1 puff from 300 ms to 200 ms. Result: Plasma. Good locked mode. Next shot: Re-run shot 16. Turn off seg 3 and turn on seg 2.
Aug 15 2012 01:25:09:370PM	1120815018	Greg Wallace	Changes: Re-run shot 16. Turn off seg 3 and turn on seg 2. Result: Plasma. ELMs! Clean LH pulse. ICRF coupling seems to have been perturbed by ELMs. No ELMs during LH---possibly due to NINJA puff, bigger outer gap, or LH? Next shot: No DPCS changes.
Aug 15 2012 01:39:57:560PM	1120815019	Greg Wallace	Changes: No DPCS changes. Result: Plasma. No LH due to klystron body current fault. Next shot: Repeat. No DPCS changes.
Aug 15 2012 01:58:29:197PM	1120815020	Greg Wallace	Changes: Repeat. No DPCS changes. Result: Plasma. Next shot: No DPCS changes.
Aug 15 2012 02:08:26:107PM	1120815021	Greg Wallace	Changes: No DPCS changes. Result: Plasma. Next shot: No DPCS changes.
Aug 15 2012 02:23:14:810PM	1120815022	Greg Wallace	Changes: No DPCS changes. Result: Plasma. Next shot: No DPCS changes.
Aug 15 2012 02:36:54:077PM	1120815023	Greg Wallace	Changes: No DPCS changes. Result: Plasma. Poor LH coupling. Looks like too little density now that NINJA puff has moved. Next shot: Increase RCUR from 0.655 to 0.6575 to improve LH coupling.
Aug 15 2012 02:51:16:313PM	1120815024	Greg Wallace	Changes: Increase RCUR from 0.655 to 0.6575 to improve LH coupling. Result: Plasma. No LH due to HV module failure. Next shot: Increase nl_04 demand to 1e20 starting at 0.8 s.
Aug 15 2012 03:04:23:090PM	1120815025	Greg Wallace	Changes: Increase nl_04 demand to 1e20 starting at 0.8 s. Result: Plasma. Next shot: Change nl_04 demand to 0.7e20 starting at 0.8 s.
Aug 15 2012 03:22:29:510PM	1120815026	Greg Wallace	Changes: Change nl_04 demand to 0.7e20 starting at 0.8 s. Result: Plasma. Next shot: No DPCS changes.
Aug 15 2012 03:47:19:217PM	1120815027	Greg Wallace	Changes: No DPCS changes. Result: Plasma. Next shot: No DPCS changes.
Aug 15 2012 03:55:53:250PM	1120815028	Greg Wallace	Changes: No DPCS changes. Result: Plasma. Next shot: Decrease nl_04 demand to 0.5e20 during flattop.
Aug 15 2012 04:08:47:160PM	1120815029	Greg Wallace	Changes: Decrease nl_04 demand to 0.5e20 during flattop. Result: Plasma. Next shot: No DPCS changes.
Aug 15 2012 04:21:43:250PM	1120815030	Greg Wallace	Changes: No DPCS changes. Result: Plasma. Next shot: No DPCS changes.
Aug 15 2012 04:36:58:087PM	1120815031	Greg Wallace	Changes: No DPCS changes. Result: Plasma. Next shot: Move LH pulse to 1.2-1.5 s. No DPCS changes.
Aug 15 2012 04:48:57:730PM	1120815032	Greg Wallace	Changes: Move LH pulse to 1.2-1.5 s. No DPCS changes. Result: Plasma. Next shot: Move RCUR change from 1.35 s to 0.9 s. LH pulse will be 1.1-1.5 s.
Aug 15 2012 05:01:31:870PM	1120815033	Greg Wallace	Changes: Move RCUR change from 1.35 s to 0.9 s. LH pulse will be 1.1-1.5 s. Result: Plasma. LH faulted out. Next shot: Reload shot 32 seg 2. LH timing 1.35-1.45 s.
Aug 15 2012 05:06:11:040PM	1120815033	Greg Wallace	Changes: Reload shot 32 seg 2. LH timing 1.35-1.45 s. Result: Plasma. Last shot of the day.

Engineering Operator Comments
Shot	Time	Type	Status	Comment
1	09:02:08:193AM	Plasma	Ok
2	09:18:24:753AM	Plasma	Ok
3	09:30:57:527AM	Plasma	Ok
4	09:44:10:390AM	Plasma	Ok
5	09:57:53:237AM	Plasma	Ok
6	10:10:39:250AM	Plasma	Ok
7	10:30:04:783AM	Plasma	Ok
8	10:42:53:147AM	Plasma	Ok
9	10:57:47:547AM	Plasma	Ok
10	11:10:20:243AM	Plasma	Ok
11	11:26:43:310AM	Plasma	Ok
12	11:41:01:570AM	Plasma	Ok
13	11:59:37:043AM	Plasma	Ok
14	12:14:00:573PM	Plasma	Ok
15	12:28:23:707PM	Plasma	Ok
16	12:42:45:950PM	Plasma	Ok
17	12:56:27:690PM	Plasma	Ok
18	01:10:58:277PM	Plasma	Ok
19	01:25:46:930PM	Plasma	Ok
20	01:39:56:680PM	Plasma	Ok
21	01:53:43:647PM	Plasma	Ok
22	02:08:35:073PM	Plasma	Ok
23	02:23:13:160PM	Plasma	Ok
24	02:36:48:190PM	Plasma	Ok
25	02:51:28:330PM	Plasma	Ok
26	03:05:05:343PM	Plasma	Ok
27	03:22:31:760PM	Plasma	Ok
28	03:37:40:820PM	Plasma	Ok
29	03:53:44:010PM	Plasma	Ok
30	04:09:29:903PM	Plasma	Ok
31	04:24:17:250PM	Plasma	Ok
32	04:37:31:163PM	Plasma	Ok
33	04:50:37:753PM	Plasma	Ok
34	05:02:56:320PM	Plasma	Ok