Miniproposals

Miniproposal: 704 Date Filed: 5/30/2012 Title: Observation of current density profile change in LH discharged with polarimeter system First Author: Peng Xu Session Leader: Jim Irby (shots 16-29)

Miniproposal: 705 Date Filed: 6/6/2012 Title: Current profile measurements in plasmas with strong Lower Hybrid current drive First Author: Bob Mumgaard Session Leader: Bob Mumgaard (shots 1-15)

Engineering Operator Run Comment

MP 705: Current profile measurements in plasmas with Strong LHCD

Session Leader Plans

Entered: Jun 11 2012 05:24:20:947PM

Author: Jim Irby

Session leaders for afternoon: Peng/Irby Combination of MP676, 677, 704 Conditions similar to 1120608018 or best LH results from morning run We may ask to: Start TF rampup at -1.1 s Make Ip gain change as early as possible ( < 0.65 s )

Entered: Jun 11 2012 05:53:30:000PM

Author: Bob Mumgaard

Today we will continue (finish?) running MP705 which was run for the second half of 1120608. This will be the first half of the run day today. MP 705: Current profile measurements in plasmas with Strong LHCD SL: Mumgaard PO: Hutchison Required subsystems: LH DNB no Cryopump, no ICRF Overnight ECDC in D. This will be part c of the MP, a shot-to-shot density scan followed by a limited discharge. We will use extended discharges to enable us to monitor the decay of the current drive back to Ohmic. Target plasma: 1120608023. Increase current to 550kA. Note th extended flattop. Beam prescription: 16 pulses starting at 0.3s, 75ms on, 25ms off, 48-50keV, > 6.5A. Check MSE data between shots, repeat if necessary. ================ Shot Plan =============================================== (1) MSE plasma size scan Ref 1120608011. Try to flatten nebar. (2) Bring LH power up to 800kWnet. No need for long flattop, (ref 1120608014 @ 550kA). LH start at 0.7s, end at 1.4s. Note MHD activity at high power. If present increase Ip. (3) Shot-to-shot density scan. LH at 75deg, 800kWnet. Adjust forward power shot to shot to try to keep net same. - 0.3 nel04 - 0.4 - 0.5 - 0.6 - 0.75 - 0.9 (only if we saw some LH effect in 0.75nel04 shot) (4) Limited discharge. Modify target shot or recalculate predictors for shot 1100820003. Flattop to 1.7s, LH at 75deg, 800kWnet 0.7s to 1.4s. If time: (5) Quasicontinous LH phase scan. LH 1s long starting at 0.7s. Phase scan from 60-105deg with 5deg changes every 100ms. endif (6) Repeat MSE plasma sweep from part 1 (7) Locked mode. See HiReX Sr team for reference. 11 different conditions + LH checkout. May require some repeats. ================ Required Diagnostics ================================== MSE-DNB. ECE, Hard X-ray camera, Lyman-alpha array, Thomson, Reflectometer:C-middle horn, TCI, Xtomo

Physics Operators Plans

Entered: Jun 11 2012 04:40:34:393PM

Author: Ian Hutchinson

As far as I know the first part of Tuesday is an extension of the research of last Friday. Therefore settings should be taken from that run. I'm assuming we should ECDC according to whatever regimen we have been following. In addition we have a request for: Fill H-bottom with 6 psi He4 Hybrid DISABLED (PG5) Which is to enable a trace of Helium to be added.

Session Leader Summaries

Entered: Jun 12 2012 10:10:50:510PM

Author: Bob Mumgaard

Today we ran MP705 which has three parts. a) LH power scan at constant phase, density and Ip b) LH phase scan at constant density, Ip and high power c) Density scan at constant LH power, phase and density. We did part c today We started at 9:00am and went to 1:00pm. Shot 1 was a successful MSE plasma sweep. Brought LH up to 560kW on shot 2 but lost invertors early in the beam pulse shot 3 brought LH up to 700kW. shot 4 bought power up to >800kW, but had no beam. Only slight MHD in toward the end of the LH. We then did a plasma density scan. PO Hutchison did a good job of flattening out the density trace on these shots. 5: 0.4 nel04 6: 0.5 7: 0.6 w/ LH faults, marked drop off in current drive. 8: 0.6 again, LH faults 9: 0.7 with LH faults. By this point we have no CD. Decide to go back down in density before moving onto limited. 10: 0.55 11: No LH, so this is an Ohmic ref. 12: 0.5 Then move to limited discharge. We modified the existing discharge to be limited. 13: Just barely limited at 0.7nel04, some CD. 14: Early disruption due to Mo injection. 15: Fully limited at 0.7nel04, some CD. Note that shots 6 and 12 are great shots for repro comparison. Looking at the data it seems here is more noise in the MSE polarization angle than we'd like. There is also drift which the ISC does not account for. We'll have to look into this. Overall a sucessful run. Seung Gyou had some good data concerning parametric decay. Raising the current a bit from Fri successfully avoided the MHD that plagued the earlier running of this MP and we finished part c of the MP. Need to review data to make sure we've covered everything. Good shots: 1,3,5,6,7,8,9,10,12,13,15 (11) DNB errors: 2,4 Ohmic: 11 Early disruption: 14 11/15 (73%)

Entered: Jun 18 2012 10:32:03:463AM

Author: Jim Irby

Work continued on MP704, "observation of current density profile changes in LH discharges with the polarimeter system". The best current drive case from the morning was determined and re-run for several discharges to judge reproducibility of the polarimeter signals. Several Ohmic discharges without LH were also taken for comparison. The inner two polarimeter chords showed a significant reduction in rotation during the lower hybrid pulse. It was also clear from these data that changes made to the position of the polarimeter detectors relative to the focal plane of the focusing mirrors had reduced the vibrational noise levels. In addition, small changes to the TF current programming improved the signal baselines and reduced the drift.

Physics Operator Summaries

Entered: Jun 12 2012 05:15:22:407PM

Author: Ian Hutchinson

Overall _______ Tokamak ran very well. MSE and Polarimetry well. Beam pretty well. LH not too bad. Most of the objectives were attained. Learned something about the fizzle detector which slowed us down. Scorecard --------- Shot,Duration(s),Ipmax(MA),Result Shot,Duration(s),Ipmax,Result | 01 1.813 0.784 Plasma | 02 1.948 0.604 Plasma | | 03 1.951 0.593 Plasma | 04 1.942 0.601 Plasma | | 05 1.938 0.592 Plasma | 06 1.943 0.590 Plasma | | 07 2.000 0.585 Plasma | 08 2.010 0.587 Plasma | | 09 2.010 0.584 Plasma | 10 2.060 0.577 Plasma | | 11 2.000 0.581 Plasma | 12 2.010 0.586 Plasma | | 13 2.000 0.586 Plasma | 14 0.510 0.581 Plasma | | 15 2.014 0.575 Plasma | 16 2.013 0.583 Plasma | | 17 1.722 0.584 Plasma | 18 1.895 0.588 Plasma | | 19 0.000 0.004 Dud | 20 1.896 0.585 Plasma | | 21 1.891 0.585 Plasma | 22 1.697 0.592 Plasma | | 23 1.724 0.582 Plasma | 24 1.711 0.578 Plasma | | 25 1.602 0.817 Plasma | 26 1.946 0.827 Plasma | | 27 1.957 0.834 Plasma | 28 1.946 0.831 Plasma | | 29 1.693 0.811 Plasma Date 1120612: 29 shots. 28 plasmas. 0 fizzles. 1 no-power 0 System Error Total plasma duration: 51.84 s (exceeding -78 kA)

Session Leader Comments
Jun 12 2012 09:05:30:093AM	1120612001	Bob Mumgaard	This will be a outer gap scan MSE calibration shot. Ref shot 1120608011. Density adjusted. Result: Beam looks good, MSE looks good, ISC looks good. In the future extend the Bt flattop to get 5.4T into the entire rampdown. Next: Load 112060823 with current at 550kA. LH at ~500kW, 75deg, 0.7s-1.4s.
Jun 12 2012 09:26:19:723AM	1120612002	Bob Mumgaard	Result: Good ISC. Beam looses 2 inverters after 0.7s. 560kWn LH, cut out a bit early due to collector over temperature. Cell access to ajust gain on Mo camera. Next: Increase LH power. All 8 beam invertors. Enable Ar, Enable He
Jun 12 2012 09:38:51:530AM	1120612003	Bob Mumgaard	Result: Good ISC. Beam blows fuses at 1.6s. 700kWn LH, solid pulse. Cell access to replace DNB fuses. Next: Increase LH power to 800kWn.
Jun 12 2012 09:56:40:867AM	1120612004	Bob Mumgaard	Result: Good ISC. Beam fails to fire, limit amp was left out. 810kWn LH, solid pulse out to 1.4s. Good density, though has a dip at 1.0s. This is our target for the density scan. Next: Repeat with DNB.
Jun 12 2012 10:16:59:540AM	1120612005	Bob Mumgaard	Result: Good ISC. Good beam. 810kWn LH, solid pulse out to 1.4s. Good density, flatter this time. This is our low density baseline. Next: Up density to 0.5
Jun 12 2012 10:26:51:313AM	1120612006	Bob Mumgaard	Result: Good ISC. Good beam. 810kWn LH, solid pulse out to 1.4s. Good density. Some MHD on at the end of the LH pulse. More heating on the LH launcher. Next: Up density to 0.6. Extend the Ip and Bt flattop by 75ms to give a good penultimate beam pulse showing return to ohmic. LH will adjust gap a bit to limit coupler heating. We'll see what happens with the MHD as we go up in density.
Jun 12 2012 10:50:30:860AM	1120612007	Bob Mumgaard	Result: Good ISC. Good beam. 810kWn LH, faults out at 1.0s. Good density. Some MHD at 10-15kHz with its harmonic spins up and down. Not saw tooth stabilized. Markedly less pitch angle changes. Next: Lengthen Bt flatop. Increase Rgap for better LH coupling. Repeat. Same density and same Plh.
Jun 12 2012 11:02:28:560AM	1120612008	Bob Mumgaard	Result: Good ISC. Good beam. 810kWn LH, faults out at 1.1s and restrikes. Very nice density. More MHD at 10-15kHz with its harmonic spins up and down, less than last shot. Not saw tooth stabilized. Very small pitch angle changes. Flattop looks good, includes the penultimate beam pulse. Next: We will go up once more in density and then revisit the lower densities. Next is 0.7 nel04. Increase outer gap a bit for LH. Shoelace will shoot into 0.5-0.55s.
Jun 12 2012 11:18:56:087AM	1120612009	Bob Mumgaard	Result: Good ISC. Good beam. 810kWn LH, faults out at 0.9s and restrikes twice. Very nice density at 0.7. Some broadband MHD. Does not look to be driving any current. Background subtraction issues during the LH restrikes. Next: We are going to go to 0.55 on density to get a finer resolution of the drop off in current drive. Reload the gap from shot 7 for LH. Everything else stays the same.
Jun 12 2012 11:52:19:177AM	1120612010	Bob Mumgaard	Result: Good ISC. Good beam. 825kWn LH, Solid pulse. Very nice density at 0.55. Get the spin up snake-like MHD. Drives significant current. Drive decreases when density bumps up at the end of LH. Next: Go down in density to 0.5. This will repeat shot 6.
Jun 12 2012 11:55:36:030AM	1120612011	Bob Mumgaard	Result: Good ISC. Good beam. No LH power due to body fault. This is the ohmic shot. Next: Repeat once more. Then Limited.
Jun 12 2012 12:13:16:333PM	1120612012	Bob Mumgaard	Result: Good ISC. Good beam. Solid LH power throughout. Good density. Some minor MHD at the very end of the LH pulse. Good pitch angle profiles. Next: Limited shot with same current and LH power.
Jun 12 2012 12:32:26:830PM	1120612013	Bob Mumgaard	Result: Good ISC. Good beam. LH faults once. Good density at 0.66nel04. Just between limited and diverted. No MHD. Good pitch angle profiles. Next: Repeat with shape more limited.
Jun 12 2012 12:57:03:570PM	1120612013	Bob Mumgaard	Result: Early disruption. Lots of Mo. Next: Try one more time for this limited discharge. Decrease Ar. Last shot of my allotment.
Jun 12 2012 01:04:05:460PM	1120612014	Bob Mumgaard	Result: Early disruption with lots of Mo. Next: Repeat. turn off Ar. Hope.
Jun 12 2012 01:03:37:717PM	1120612015	Bob Mumgaard	Result: Good shot. Good beam. Good ISC. Good limited discharge. Good density. Some loop voltage change. Pitch angles change. Next: Done with my allotment. Handover to polarimetry.
Jun 12 2012 01:20:40:097PM	1120612016	Jim Irby	Start with shot 5 Failure to load --- repeat of shot 15...
Jun 12 2012 01:44:48:373PM	1120612017	Jim Irby	Try for shot 05 again. For better polar baselines: TF start from -1.0 to -1.1 s TF rampdown starts at 2.0 s Ip rampdown starts at 1.6 s results ---- Much better polar baselines.
Jun 12 2012 02:10:04:490PM	1120612018	Jim Irby	changes -------------------------------- LH start from 0.7 to 0.8 s results -------------------------------- plasma into rampdown mhd starts around 1.3 s polar signals good.
Jun 12 2012 02:24:17:897PM	1120612019	Jim Irby	changes -------------------------------- no power shot to diagnose PCS issue results --------------------------------
Jun 12 2012 02:55:05:527PM	1120612020	Jim Irby	changes -------------------------------- try for plasma results -------------------------------- Good shot. Nice flat density
Jun 12 2012 03:03:57:573PM	1120612021	Jim Irby	changes -------------------------------- repeat results -------------------------------- plasma into rampdown very good baselines at t=0, but offset at end-of-shot
Jun 12 2012 03:11:46:490PM	1120612022	Jim Irby	changes -------------------------------- repeat results -------------------------------- No LH --- Ohmic baseline....
Jun 12 2012 03:40:56:813PM	1120612023	Jim Irby	changes -------------------------------- another Ohmic shot results -------------------------------- good baselines
Jun 12 2012 03:51:59:220PM	1120612024	Jim Irby	changes -------------------------------- no changes --- no LH --- check PCS results -------------------------------- baselines good.
Jun 12 2012 04:15:09:143PM	1120612025	Jim Irby	changes -------------------------------- try for 800 kA and LH --- same density results -------------------------------- 800 kA, but only LH retries..
Jun 12 2012 04:30:57:610PM	1120612026	Jim Irby	changes -------------------------------- should have LH results -------------------------------- two short LH pulses --- enough to thump the loop voltage
Jun 12 2012 05:02:12:047PM	1120612027	Jim Irby	changes -------------------------------- try for more LH results -------------------------------- beautiful LH pulse!
Jun 12 2012 05:13:13:113PM	1120612028	Jim Irby	changes -------------------------------- repeat results -------------------------------- good shot
Jun 12 2012 05:34:15:437PM	1120612029	Jim Irby	changes -------------------------------- try for LH starting at 0.9 s to 1.4 s results -------------------------------- no LH --- spike at 0.9 s...

Physics Operator Comments
Jun 12 2012 08:34:46:493AM		Ian Hutchinson	Load from 1120608011 Draw flat density at 0.5e20. Delay TF rampdown start to 2s. Load
Jun 12 2012 09:21:00:500AM	1120612001	Ian Hutchinson	Plasma till 1.8s. Load from 1120608023 Draw IP to 540kA (was 500kA). Reduce He puff (PG5 H-bottom) to 30ms. Load
Jun 12 2012 09:33:24:177AM	1120612002	Ian Hutchinson	Plasma to 1.95s. Enable Ar. Puff to 50ms. Forgot to enable H-bottom He puff. Enable from now. Flatten the NL04 trace. Load.
Jun 12 2012 09:48:13:220AM	1120612003	Ian Hutchinson	Plasma till 1.9s ICEF4 to -1280A from -1270A. Load
Jun 12 2012 10:07:35:273AM	1120612004	Ian Hutchinson	Plasma. No beam. Ar puff to 60ms. Lower nl04 gain to 6 at .2s
Jun 12 2012 10:26:42:530AM	1120612005	Ian Hutchinson	Plasma NL04 gain switch moved earlier to .1s. So whole segment is at 6. NL04 value set to 0.5e20 Load.
Jun 12 2012 10:33:14:110AM	1120612006	Ian Hutchinson	Plasma. Lengthen shot my moving Ip rampdown start to 1.78s. NL04 to 0.6e20 Rcur to .659 from .661 to increase outer gap.
Jun 12 2012 10:54:35:530AM	1120612007	Ian Hutchinson	Plasma to 2s. ICEF4 to -1290. Move Bt rampdown start to 1.78s. Slow the Rcur ramp during rampdown. Move invert times to 2.3s from 2.0s Rcur to .6575 Load
Jun 12 2012 11:15:26:867AM	1120612008	Ian Hutchinson	Plasma to 2s ICEF4 to -1300A Adjust Rcur and zxl in rampdown. Rcur to .656 NL04 to 7 Load
Jun 12 2012 11:20:35:047AM	1120612009	Ian Hutchinson	Plasma Rcur gain to 2.2s. Also zcur, clearin. Rcur to .659 nl04 to .65e20
Jun 12 2012 11:40:14:837AM	1120612010	Ian Hutchinson	Plasma. Ip gain stretched to 2.2s. Also ICEF4 rx,zx. NL04 to .5e20 Load
Jun 12 2012 12:10:37:520PM	1120612011	Ian Hutchinson	Plasma. No LH. No changes.
Jun 12 2012 12:26:03:903PM	1120612012	Ian Hutchinson	Plasma. Move to limited plasma. Clearin to -0.015 from -0.001 Rcur to .650 from .659. This should give outer gap of about 1.8cm. NL04 to 0.7e20 Load
Jun 12 2012 12:42:49:293PM	1120612013	Ian Hutchinson	Plasma. Only just limited. Clearin to -0.02 Rcur to 0.648 Load
Jun 12 2012 12:59:57:767PM	1120612014	Ian Hutchinson	Plasma till .5s. Big radiative event starts at .44s. Ar puff to 50ms. ICEF4 to -1310A
Jun 12 2012 01:07:35:623PM	1120612015	Ian Hutchinson	Plasma to 2s. Load from shot 5. TF start to -1.1s in segment 1. TF rampdown start to 2.0s in seg 2.
Jun 12 2012 01:30:06:660PM	1120612016	Ian Hutchinson	Plasma. Forgot to load. That shot was a repeat of the limited. Ip rampdown start to 1.6s. Load
Jun 12 2012 02:37:19:003PM	1120612017	Ian Hutchinson	Plasma to 1.73s. Vertical instability. Set other parameter ramps to start at 1.6s Load. NL04 gain switch to 0.1s. Load. ICEF4 to -1310A Load
Jun 12 2012 02:39:05:917PM	1120612018	Ian Hutchinson	Plasma. There is a PCS error at 1.8666s. PIDs all take a jump. Time taken to try to track down the cause.
Jun 12 2012 02:39:23:340PM	1120612019	Ian Hutchinson	No power shot test.
Jun 12 2012 02:51:22:920PM	1120612020	Ian Hutchinson	Plasma repeat. Same strange PCS problem at the same time. Reload shot 17. Failed to load.
Jun 12 2012 03:06:45:660PM	1120612021	Ian Hutchinson	Plasma. PCS problem remains. Actually it is at 1.8656 on an unsmoothed trace. Load
Jun 12 2012 03:20:52:067PM	1120612022	Ian Hutchinson	Plasma disrupts like shot 17 which is where it came from. No sign of the PCS problem at 1.865s as with 18-21. NL04 gain switch to .1s. Set clearin ramp to start at 1.6s. Set clearin to -0.02 at 2s. Set NL04 ramp start to 1.6s Load.
Jun 12 2012 03:43:45:280PM	1120612023	Ian Hutchinson	Plasma. Still disrupted early in rampdown. No obvious PCS problems. Start rcur, zcur, rxu, zxu, zxl ramps at 1.6s. Load
Jun 12 2012 04:01:09:820PM	1120612024	Ian Hutchinson	Plasma still does not ramp down. No convincing sign of the 1.8656s problem. Ip to 0.8MA Clearin ramp started at 1.55s. Load.
Jun 12 2012 04:09:44:250PM	1120612025	Ian Hutchinson	Plasma till 1.61s Keep Ip flat till 1.6s. Load.
Jun 12 2012 04:37:31:500PM	1120612026	Ian Hutchinson	Plasma. The strange PCS glitch happens at 1.92498s. Mover rcur out to reduce the outer gap. Load.
Jun 12 2012 05:02:32:180PM	1120612027	Ian Hutchinson	Plasma. Move Engineering fizzle detector off time to 1.7s from 2.3s.
Jun 12 2012 05:13:07:240PM	1120612028	Ian Hutchinson	Plasma. Confirmed that the current glitch at the end is caused by the fizzle detector. Wolfe would have known. The fizzle detector also somehow controls the OH double swing. That was changed at about 10:30am because of OH warnings. Actually shot 7 seems to be where the double-swing was enhanced. Fizzle Detector off time to 1.9s.
Jun 12 2012 05:13:27:247PM	1120612029	Ian Hutchinson	Plasma to 1.7s.

Engineering Operator Comments
Shot	Time	Type	Status	Comment
1	08:56:58:703AM	Plasma	Ok
2	09:13:28:203AM	Plasma	Ok
3	09:27:03:487AM	Plasma	Ok
4	09:46:26:230AM	Plasma	Ok
5	10:03:08:387AM	Plasma	Ok
6	10:16:47:310AM	Plasma	Ok
7	10:32:26:360AM	Plasma	Ok
8	10:48:13:780AM	Plasma	Ok
9	11:04:33:610AM	Plasma	Ok
10	11:26:01:027AM	Plasma	Ok
11	11:44:37:637AM	Plasma	Ok
12	12:01:30:730PM	Plasma	Ok
13	12:19:26:603PM	Plasma	Ok
14	12:38:42:177PM	Plasma	Ok
15	12:53:53:707PM	Plasma	Ok
16	01:09:19:720PM	Plasma	Ok
17	01:26:36:183PM	Plasma	Ok
18	01:44:49:260PM	Plasma	Ok
19	02:24:29:733PM	Test	Ok	No Power Test shot
20	02:33:48:930PM	Plasma	Ok
21	02:47:41:357PM	Plasma	Ok
22	03:03:11:130PM	Plasma	Ok
23	03:18:36:657PM	Plasma	Ok
24	03:37:57:107PM	Plasma	Ok
25	03:55:52:863PM	Plasma	Ok
26	04:14:57:727PM	Plasma	Ok
27	04:34:27:977PM	Plasma	Ok
28	04:52:24:187PM	Plasma	Ok
29	05:08:35:717PM	Plasma	Ok

System Availability

Jun 12 2012 08:56:39:040AM

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 no Bottle has been disconnected from gas lines and plugged. It is being stored in the diborane cabinet. Feb 29 2012 07:47:39:617AM (dekow) Jim Irby Boronization dekow,irby CECE no   Jan 6 2012 03:48:47:060PM  Anne White Correlation ECE 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 no Off line. Helium dewar to be installed Monday 5/14/12 May 10 2012 08:45:54:900AM (labombard) 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 no LH is now safe for manned entry into machine. Positioner locked and tagged off. Switches locked in dummy load position. Mar 2 2012 02:34:28:943PM (dterry) 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 yes Midplane Lyman-a. New B-PORT Lyman (BPLY) still being debugged. Apr 20 2012 10:44:00:540AM (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 viewing the 10-14 nm region for molybdenum monitoring. It's days are numbered as LoWEUS has demonstrated superiority. Apr 20 2012 10:44:10:937AM (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. May 1 2012 08:31:33:743AM (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 As of 1120508, the 60, 75, 88s, 112, 140 and variable are connected and turned on. May 8 2012 10:33:21:567AM (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 no SSS is up to air, no safety issues. Feb 27 2012 01:51:48:783PM (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 one 50Hz laser, precise density calibration still required. May 9 2012 03:12:32:050PM (jwhughes) Jerry Hughes Core Thomson scattering jrwalk,jwhughes,yma TS - Edge yes Operating with one 50Hz laser, precise density calibration still required. May 9 2012 03:12:51:363PM (jwhughes) 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

Jun 12 2012 01:25:22:607PM

MHD at 5 khz at end of LH seen on chords 1 and 2