Miniproposals

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 1-24)

Engineering Operator Run Comment

MP705 - Current profile measurements in LHCD and documentation of LH den

Session Leader Plans

Entered: Jun 7 2012 07:26:16:417PM

Author: Bob Mumgaard

Today we will run the MP we were planning on running yesterday half day. It will be a full day. We exped delays in the morning to troubleshoot the TF. MP 705: Current profile measurements in plasmas with Strong LHCD SL: Mumgaard PO: Parker This will be part a, b and c of the MP Part a will be abridge a bit as we obtained a good power scan on 1120606 during the Polarimeter shake-down. Target plasma: 1120601025. We will extend flat top to 1.7s and then to 1.9s if engineering allows it. nl04: 0.35e20 m^-2 Ip = 500kA, vary to avoid MHD, but then run fixed for phase and density scans. Bt = 5.4 T 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 1120516020. Flatten density. Decrease Ar puff. (2) LH power shot to shot scan to establish reliable LH performance at 800-900kW at 75deg phasing, stable density, no MHD, significant current drive and 0.7s LH pulse length starting at 0.7s. These can be typical shot length. - 200kW - 600kW - 900kW - 1MW if it looks promising. (3) LH Phase scan. Extend to 1.7s (1.9s if allowed). LH pulse from 0.7s-1.4s - 60 deg - 75 deg - 90 deg - 105 deg (4) Quasicontinous LH phase scan. LH 1s long starting at 0.7s. Phase scan from 60-105deg with 5deg changes every 100ms. (5) Shot-to-Shot density scan. LH at 75deg, 0.7s starting at 0.7s, 900kW. - 0.3 nel04 - 0.4 - 0.5 - 0.6 - 0.75 - 0.9 (only if we saw some LH effect in 0.75nel04 shot) (6) Limited discharge. Ref 1100820003 with flattop to 1.9s and LH 0.7s long at 0.7s. (7) Repeat MSE plasma sweep from part 1 (8) Locked mode. See HiReX Sr team for reference. 18 different conditions. 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 7 2012 01:39:49:400PM

Author: Bill Rowan

9am to 1pm MP705 - Current profile measurements in LHCD and documentation of LH density limit SL: Mumgaard Required systems: LH, DNB, MSE, HIREX, ... 1pm to 5pm MP355 - ICRF (J-port) conditioning SL: Wukitch/Lin Required systems: ICRF J-port, GPI PO: Rowan ----------------- Engineering Setup ----------------- Run begins at 09:00 and ends at 17:00 Power systems as on: 1120516020 (position scan for MSE calibration) 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 H-Bottom with 6 psi He4 DISABLED (PG5) 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): 9am - 1pm: no; 1pm - 5pm: YES LH(yes/no): YES Cryopump (yes/no): no DNB (yes/no): YES 9am - 1pm: Required systems : LH, DNB, MSE, HIREX, ... 1pm - 5pm: Required systems: ICRF J-port, GPI 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

Session Leader Summaries

Entered: Jun 11 2012 01:36:39:657PM

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 a shortened version of part a and then attempted part b. Starting at about 1pm after the TF testing. We did a sucessful MSE plasma sweep for shot 11. Shot 12 was at 200kW but had the beam loose inverters. We then did a small LH power scan at 75deg 13: 200kW 14: 600kW; Noted that Vloop and MSE had a big change between these, will want to revisit 400kW. 16: 800kW with ~3kHz MHD at 1.28s We paused to decide what to do about the MHD. Noted the MHD occured with what appeared to be Parametric decay on Seung Gyou's traces and a distinct density profile flattening. Though in this case the MHD didn't appear to significantly affect the loop voltage. The effect on density made us think we could puff our way through it, other ideas included increasing current or lowering the power to move onto the phase scan. We decided to move forward with the power scan and see if the MHD got worse. Requested 900kW of forward power. This would at least tell us how sensitive the MHD onset was to power. 17: Beam didn't fire, had lots of MHD starting earlier, hit LH only 830kW due to coupling. Density was about the same. We stopped to decided what to do about the MHD. It looked like it was triggering at a slow creep down in density. We decided to put in a bit higher density demand at the LH turn on. The idea was that this might prevent the onset of the MHD and the resulting flattening of the density profile. 18: Didn't have the MHD after a more stable density trace. This looked good. Decided to move forward with the phase scan at this power and density traces. 19: Changed phase to 90deg. This had more noise in the MSE pitch angles than we would like. Decided to proceed with the phase scan and revisit later. 20: Requested 60deg phasing. LH faulted out, resulting in an ohmic shot. 21: Repeat. LH faulted again. LH found a problem with the restrikes. Decided to retry. Syunichi pointed out later that the coupling at 60deg is very poor. 22: Lots of LH faulting (cart 3?) Next time try at a higher phasing. 23: Back at 90 deg. Lots of MHD with early onset. 24: 105deg. Same story with the MHD. Overall we learned not to operate the LH a the onset of MHD which appears to depend very sensitively on density and power and we think it might depend on current as well. Overall we had a breakdown of: Nice usable shots: 11, 13, 14, 16, 18, 19. Lots of MHD 23, 24 LH faults: 22, 20 (ohmic), 21 (ohmic) Bad beam : 12, 17 Early disrupt: 15 Giving us 8 usable and 6 not usable. Next time we run this MP we will revisit the phase scan but at 65deg or more and do a continuous phase scan. We will do a density scan and possibly revisit the power scan. The MHD is going to be a problem. Perhaps when we boronize it will become more avoidable.

Physics Operator Summaries

Session Leader Comments
Jun 8 2012 01:11:48:523PM	1120608011	Bob Mumgaard	First (real) shot will be a MSE plasma sweep calibration. Using shot 1120606032 as a starting point and turning off Ar and decreasing density demand to try to keep nebar constant at Cornwall's request.
Jun 8 2012 01:31:35:733PM	1120608011	Bob Mumgaard	Good sweep. Better density, still creeps. Good ISC and beam and MSE data. Done with MSE sweep. Move on to bringing up the LH power. Next: Target 1120601025 with nel04 0.35. LH at 200kW, 75deg starting at 0.7 until 1.4. ICRF will pulse Jant at 1.6s to check out.
Jun 8 2012 01:43:45:170PM	1120608012	Bob Mumgaard	Beam lost 2 invertors on the pulses after 1s. Good ISC, good density. No LH faults. MSE looks good. Some changes in pitch angle, Repeat to get later beam pulses. Next: Repeat with same LH to get all the beam pulses. Up Argon to 65ms. ICRF checks out again.
Jun 8 2012 02:18:35:223PM	1120608013	Bob Mumgaard	Beam was good throughout. Good ISC, good density. Good LH at ~200kW MSE looks good. Doesn't changes in pitch angle, doesn't come all the way back, (no time) Next: Up the LH to 600kW, no other changes.
Jun 8 2012 02:19:33:393PM	1120608014	Bob Mumgaard	Beam was good throughout. Good ISC, good density. Good LH at ~400kW MSE looks good. Large changes in pitch angle, doesn't come all the way back, (still no time) Next: Up the LH to 800kW, flattop to 1.9s.
Jun 8 2012 02:25:36:303PM	1120608015	Bob Mumgaard	Nope. Next: Repeat
Jun 8 2012 03:08:50:453PM	1120608016	Bob Mumgaard	No beam. Good ISC. LH looks good, only +30kW in net. Gets MHD at 1.0+s. Possibly due to a sliding down in density. Next: Same, just add a bit of puff to up density to see if that prevents onset.
Jun 8 2012 03:18:43:577PM	1120608018	Bob Mumgaard	Good beam. Good ISC. LH looks good, density stays up. No MHD onset. MSE data looks good, big changes and comes back to Ohmic. Next: Change phase to 90deg. All else the same.
Jun 8 2012 03:36:17:060PM	1120608019	Bob Mumgaard	Good beam. Good ISC. LH looks good, density stays up, then creeps down toward the end and we get MHD at 1.3s MSE data looks noisier. Will revisit. Next: Change phase to 60deg. All else the same.
Jun 8 2012 03:48:12:077PM	1120608020	Bob Mumgaard	Good beam. Good ISC. LH faults before doing much. This will be our Ohmic shot. Next: Repeat.
Jun 8 2012 04:43:33:203PM	1120608021	Bob Mumgaard	Good beam. Good ISC. No LH, dies early. This is another Ohmic shot. Next: Repeat, LH thinks they know the problem.
Jun 8 2012 04:39:17:643PM	1120608022	Bob Mumgaard	Good beam. Good ISC. LH has coupling problems. Next: Go back to 90deg phasing.
Jun 8 2012 08:43:24:407PM	1120608024	Bob Mumgaard	Ran well. Good beam and ISC. MSE data looks good. Lots of MHD, starting early in the pulse. Thanks to the everybody for staying late.

Physics Operator Comments
Jun 8 2012 08:11:01:740AM		Bill Rowan	Revision to run plan. Entire day for MP 705 Start with MSE plasma size scan using shot 1120516020 as the reference Load shot 1120606032. This is the same MSE plasma size scan and it also contains a recent startup The plasma size scan is in segment 3 which is on
Jun 8 2012 01:18:36:287PM	1120608001	Bill Rowan	001. Cycle test Next shot Reduce the argon puff, PG1 to 0 Reduce nl_04 linearly from about 0.65 s Reduce demand at 1.5 s from 0.9e+20 to 0.5e+20 The nl_04 change is intended to refine the MSE position scan by holding the density approx constant.
Jun 8 2012 09:35:40:760AM	1120608002	Bill Rowan	002. TF test: 50 kA test shot.
Jun 8 2012 09:51:03:280AM	1120608003	Bill Rowan	003. TF test: 50 kA test shot
Jun 8 2012 10:45:37:607AM	1120608004	Bill Rowan	004. TF test: 50 kA test shot
Jun 8 2012 10:57:14:990AM	1120608005	Bill Rowan	005. TF test: 100 kA test shot
Jun 8 2012 11:11:06:330AM	1120608006	Bill Rowan	006. TF test: 120 kA test shot ACK failure
Jun 8 2012 11:26:31:960AM	1120608007	Bill Rowan	007. TF test: 120 kA test shot
Jun 8 2012 12:47:47:970PM	1120608009	Bill Rowan	009. TF test: 150 kA test shot
Jun 8 2012 01:18:23:993PM	1120608010	Bill Rowan	010. TF test: 150 kA test shot Next shot Back to plasmas Reduce the argon puff, PG1 to 0 Reduce nl_04 linearly from about 0.65 s Reduce demand at 1.5 s from 0.9e+20 to 0.5e+20
Jun 8 2012 01:28:24:223PM	1120608011	Bill Rowan	011 plasma, disruption just into ramp down completes step 1 in the SL plan next shot. Load 1120601025, segment 2 is on Import segment 1 from 1120608011
Jun 8 2012 01:42:42:170PM	1120608012	Bill Rowan	012. plasma full length next shot. increase the pg1 pulse to 65 ms, Argon, pg1 from 0.3 to 0.365 enable H-bottom, PG5, helium, on from 0.3 to 0.34
Jun 8 2012 02:13:23:303PM	1120608013	Bill Rowan	013 plasma full length next shot. no pcs changes
Jun 8 2012 02:13:37:513PM	1120608014	Bill Rowan	014. plasma full length next shot increase flat top from 1.5 s to 1.7 s
Jun 8 2012 02:39:19:627PM	1120608016	Bill Rowan	016. plasma flat top properly extended but for BT next shot. increase Bt flat top from 1.5 s to 1.7 s
Jun 8 2012 03:03:14:683PM	1120608017	Bill Rowan	017. plasma full length next shot insert a density ramp from 0.7 to 1.4 to find whether it will affect MHD
Jun 8 2012 03:15:09:593PM	1120608018	Bill Rowan	018. plasma full length next shot no pcs changes
Jun 8 2012 03:30:12:633PM	1120608019	Bill Rowan	019. Plasma full length next shot no pcs changes
Jun 8 2012 03:46:41:707PM	1120608020	Bill Rowan	020. Plasma full length next shot no pcs changes
Jun 8 2012 04:15:32:957PM	1120608021	Bill Rowan	021. Plasma full length next shot no pcs changes
Jun 8 2012 04:35:05:150PM	1120608022	Bill Rowan	022. Plasma full length next shot no pcs changes
Jun 8 2012 04:56:31:657PM	1120608023	Bill Rowan	023 plasma full length next shot no pcs changes

Engineering Operator Comments
Shot	Time	Type	Status	Comment
1	08:22:43:837AM	Test	Ok	Shot Cycle Test
2	09:32:08:507AM	Test	Ok
3	09:50:22:247AM	Test	Ok
4	10:41:08:840AM	Plasma	Ok
5	10:54:20:540AM	Test	Ok
6	11:07:36:703AM	Test	Bad	AFailure during change of state from check to pulse
7	11:23:27:023AM	Test	Ok
8	12:27:53:713PM	Test	Ok
9	12:43:50:603PM	Test	Ok
10	12:57:06:087PM	Test	Ok
11	01:16:19:827PM	Plasma	Ok
12	01:32:39:393PM	Plasma	Ok
13	01:46:44:250PM	Plasma	Ok
14	02:02:43:700PM	Plasma	Ok
15	02:19:53:613PM	Plasma	Ok
16	02:33:44:733PM	Plasma	Ok
17	02:49:24:593PM	Plasma	Ok
18	03:06:12:447PM	Plasma	Ok
19	03:23:22:847PM	Plasma	Ok
20	03:40:48:763PM	Plasma	Ok
21	04:07:12:120PM	Plasma	Ok
22	04:29:30:413PM	Plasma	Ok
23	04:52:58:787PM	Plasma	Ok
24	05:22:21:233PM	Plasma	Ok

System Availability

Jun 8 2012 08:22:20:080AM

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