Miniproposals

Miniproposal: 665 Date Filed: 9/6/2011 Title: Field, Current and q-dependence of the LH Density Limit First Author: Ron Parker Session Leader: Greg Wallace (shots 16-16) Session Leader: Greg Wallace (shots 18-31)

Miniproposal: 667 Date Filed: 9/6/2011 Title: Commissioning of new SOL probes First Author: Dan Brunner Session Leader: Dan Brunner (shots 1-15) Session Leader: Dan Brunner (shots 16-17) Session Leader: Dan Brunner (shots 17-17)

Engineering Operator Run Comment

AM: MP667, New SOL Probes, PM: MP665, LH Density Limit

Session Leader Plans

Entered: Aug 8 2012 10:25:38:787AM

Author: Dan Brunner

MP667: Commissioning of new SOL probes 9:00-12:30, budgeting for maximum of 12 plasmas. Due to limited number of plasmas, unlikely to repeat shots. The purpose of this run is to operate the new A-port scanning (ASP) retarding field analyzer (RFA) to measure ion and electron temperatures to the sepratrix. These will be used for comparison with (and hopefully validation of) ion temperature data with the ion sensitive probe (ISP). The ISP data covers a density scan at both 0.58 and 0.80 MA. There is already good data with the RFA at low densities and 0.8 MA. Reload shot 1120726019, 0.58 MA, 0.4e20 m^-2. Target probes. Increase density by ~0.1e20 m^-2 per shot until at ~0.8e20 m^-2. (total ~6 shots) Increase plasma current to 0.80 MA, decrease density to 0.7e20 m^-2. Target probes. Increase density by ~0.1e20 m^-2 per shot until time runs out. May take coarser density scan if time is running out. (total ~6 shots) Hand over to LH. Will piggyback with RFA to look for changes to electron/ion distributions with/without LH. CXRS will be puffing helium to get B+5 temperature profiles for comparison: Fill NINJA plenum with 6 psi Helium DISABLED.

Entered: Aug 9 2012 11:48:15:120AM

Author: Greg Wallace

Session leader plan for 1120809 MP665: Field, current, and q dependence of LH density limit SL: G. Wallace PO: R. Parker This will be the second attempt at MP665. The first attempt on 1120724 had difficulty getting to the desired low field conditions. Some data was obtained at 3 T, 0.55 MA and 4.1 T, 0.55 MA. This run will focus more on the low field, lower current discharges and try for some of the high field discharges as well. LH Setup: 90 deg phasing, 150 kW/klystron, launcher at 1278. Shot plan: 0) Load from 1120710020 (5.4 T, 550 kA, USN, no cryopump). Repeat as programmed with TS this time. 1) Load from 1120724012. Decrease Ip to 0.3 MA. Scan density from nl_04=4-8e19. 2) Repeat 1 at 0.4 MA. 3) Repeat 1 at 4.1 T, 0.3 MA. 4) Repeat 3 at 4.1 T, 0.4 MA. 5) Load from 1120727023 (6.3 T, 0.8 MA). Target nl_04 is 7e19. Note that target shot was in H with a He3 minority, so adjust density feedback and gas puffing accordingly. This shot will be to directly compare the H discharges from 1120727 with D discharges at the same Ip and Bt. 6) Repeat step 5 at 7 T, 0.8 MA. 7) Repeat step 5 at 7 T, 0.5 MA. 8) Repeat step 5 at 7 T, 1.1 MA.

Physics Operators Plans

Entered: Aug 8 2012 05:02:13:700PM

Author: Ron Parker

Engineering setup for Thursday, Aug 9, 2012 AM: MP667 Commissioning of New SOL Probes PM: MP665 Field, Current and q-dependence of the LH Density Limit Session leader: Dan Brunner (AM) Greg Wallace (PM) Physics operator: Ron Parker Power systems as on: 1120808020 A-coil configuration: +Dtop -Dbot -Jtop +Jbot; Hybrid enabled (standard configuration) 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) leave H-bottom as is Hybrid DISABLED (PG5) leave B-div as is Hybrid DISABLED (PG6) leave H-div as is Hybrid DISABLED (PG7) Fill NINJA with 6 psi He Disabled Enable the following gate valves and shutters, assuming no vacuum problems: ECE, VUV, Z-bolo, HIREX-Sr, B-spectrometer GV, Xeus, LoWEUS Torvac setup: keep gate valves open during pulse Required systems: cryopump Required diagnostics: AM: scanning ISP, emissive & RFA as well as AB-RFA; PM: TS, TCI, ECE, x-ray camera, PDI probes Desired diagnostics: edge Thomson and X-mode reflectometer ------------------------------------------------------------------------------ Boronization overnight: No ICRF: No LH: Yes, in PM Impurity injector: No DNB: Not required, may be useful in PM if available Cryopump: Yes, in PM ------------------------------------------------------------------------------ Run plan: Refer to SL's plans

Session Leader Summaries

Entered: Aug 9 2012 01:39:36:267PM

Author: Dan Brunner

Good run. Set out to get density scan at 0.58 and 0.80 MA and completed both. Nearly perfect shot performance. Only first shot disrupted, injection and slow death. Got extra innings while LH sorted out trouble moving launcher in. Got two low density points at 1.2 and 1.1 MA. Far SOL only. Now have RFA ion and electron temperature to compare to ISP. Unlike previous runs, there was no arcing or shots between the electrodes and ground between scans! The solution was complete coverage with mica. Mica tight through all of the corners and mica extending out past the electrodes. Although a new source of arcing is now differentiated: during the plasma scans. There were arcs during the first scans of the day, likely the grids cleaning up? Then there were arcs mainly during the first scan, ionizing the neutral gas built up between shots? Then there were arcs when scanned to at least a certain depth, too much plasma recycling inside the probe (something like this has been seen on other machines, e.g. JET's RFA RSI). Time to polish up RFA analysis code and compare profiles to ISP.

Entered: Aug 10 2012 06:01:19:527PM

Author: Greg Wallace

A very interesting run today. We started at low field (3 and 3.9 T) and had not much success. We then went to higher fields (6.3 and 7 T) and had great success. Preliminary analysis shows non-trivial current drive at nebar = 1.1-1.3e20 at the higher fields and 800 kA! This result is very encouraging but also very confusing. Seung Gyou reports that PDI is stronger as compared to the 6.3 T H2 discharge, but current drive seems nearly identical. We will need to compare x-ray results with the old 7 T data from 2008, but this will require re-analyzing the 2008 HXR raw data with the latest analysis technique.

Physics Operator Summaries

Entered: Aug 9 2012 05:56:27:927PM

Author: Ron Parker

A good day! Machine ran well and good progress was made toward the goals of both MP's For MP667, Ohmic shots were run with currents ranging from 0.5 - 1.2 MA, and with density scans at each current. We took advantage of a delay inpreparing the LH system to extend this part of the run by 2 shots. All shots called for on the SL plan were run. For MP665, we had difficulty running and coupling to a 3 T plasma, so we decided to move on to 4 T (actually 3.8 T). It wasn't perfect because LH was faulting but good enough to determine the "density limit". We then moved on to 6.3 T, where we found evidence of current drive up to n_bar = 1.3e20 m-3. We then ran a 7 T shot for comparison, and again found reduction of loop voltage at 1.3e20 m-3. we ran out of time for this part of the run and could use about 2 more hours to complete it. The remaining question is: is the higher "density limit" we seem to be finding with the USN plasmas due to q or field? There were a couple of delays during the run, one due to problems in inserting the LH antenna, the other due to a drop of water pressure in the alternator house. Nevertheless we ran 31 shots most of which were useful. Scorecard: 30 plasma attempts, one no power (water pressure), two disruptions before rampdown, one runaway shutdown, no fizzles (a robust startup!) and the rest full length.

Session Leader Comments
Aug 9 2012 08:38:59:720AM	1120809001	Dan Brunner	Setup: Reload shot 1120726019, make no changes. Result: Next Shot:
Aug 9 2012 08:57:48:023AM	1120809001	Dan Brunner	Delay due to alternator. First shot may be ~9:15.
Aug 9 2012 09:19:31:237AM	1120809001	Dan Brunner	Setup: Reload shot 1120726019, make no changes. Result: Strange shot, radiation and density increase, current and temperature decrease, then disruption. Next Shot: Try again.
Aug 9 2012 09:31:33:153AM	1120809002	Dan Brunner	Setup: Try again. Result: Good plasma, everything seems to be working. Next Shot: Repeat, push probe in deeper, enable NINJA.
Aug 9 2012 09:46:01:343AM	1120809003	Dan Brunner	Setup: Try again. Result: Good plasma, everything seems to be working, some arcing between grids at deepest insertion. Next Shot: Increase density by 0.1e20 m^-2.
Aug 9 2012 09:59:01:560AM	1120809004	Dan Brunner	Setup: Increase density by 0.1e20 m^-2. Result: Good plasma, still arcing at peak insertion, third scan looks ok. Next Shot: Increase density by 0.1e20 m^-2.
Aug 9 2012 10:11:23:390AM	1120809005	Dan Brunner	Setup: Increase density by 0.1e20 m^-2. Result: Good plasma, data looks ok. Next Shot: Increase density by 0.1e20 m^-2.
Aug 9 2012 10:24:55:620AM	1120809006	Dan Brunner	Setup: Increase density by 0.1e20 m^-2. Result: Good plasma, data looks good. Next Shot: Increase density by 0.1e20 m^-2.
Aug 9 2012 10:40:18:060AM	1120809007	Dan Brunner	Setup: Increase density by 0.1e20 m^-2. Result: Good plasma, data looks good. Next Shot: Increase plasma current to 0.8 MA, keep density at 0.7e20 m^-2.
Aug 9 2012 11:00:43:420AM	1120809008	Dan Brunner	Setup: Increase plasma current to 0.8 MA, keep density at 0.7e20 m^-2. Result: Good plasma. Next Shot: Repeat, probe in deeper.
Aug 9 2012 11:12:46:407AM	1120809009	Dan Brunner	Setup: Repeat, probe in deeper. Result: Good plasma, good data. Next Shot: Increase density by 0.1e20 m^-2.
Aug 9 2012 11:26:59:777AM	1120809010	Dan Brunner	Setup: Increase density by 0.1e20 m^-2. Result: Good plasma, good data. Next Shot: Increase density by 0.1e20 m^-2.
Aug 9 2012 11:41:00:240AM	1120809011	Dan Brunner	Setup: Increase density by 0.1e20 m^-2. Result: Good plasma, good data. Next Shot: Increase density by 0.1e20 m^-2.
Aug 9 2012 11:53:00:490AM	1120809012	Dan Brunner	Setup: Increase density by 0.1e20 m^-2. Result: Good plasma, good data. Next Shot: Increase density by 0.1e20 m^-2.
Aug 9 2012 12:07:31:267PM	1120809013	Dan Brunner	Setup: Increase density by 0.1e20 m^-2. Result: Good plasma, good data. Next Shot: Increase density by 0.1e20 m^-2.
Aug 9 2012 12:20:20:440PM	1120809014	Dan Brunner	Setup: Increase density by 0.1e20 m^-2. Result: Good plasma, good data. Next Shot: Repeat shot 3 (0.58 MA, 0.38e20 m^-2).
Aug 9 2012 01:13:40:987PM	1120809015	Dan Brunner	Setup: Repeat shot 3. Result: Good plasma, good data. Next Shot: Extra innings while LH sorts out some issues. Increase plasma current to 1.1 MA.
Aug 9 2012 01:26:07:963PM	1120809016	Dan Brunner	Setup: Extra innings while LH sorts out some issues. Increase plasma current to 1.1 MA. Result: Good plasma, good data, current accidentally 1.2 MA. Next Shot: Increase density by 0.1e20 m^-2, decrease current to 1.1 MA, push probe in deeper.
Aug 9 2012 01:37:29:447PM	1120809017	Dan Brunner	Setup: Increase density by 0.1e20 m^-2, decrease plasma current to 1.1 MA, push probe in deeper. Result: Good plasma, good data. Next Shot: LH fixed my sabotage! Handing run back over. Thanks for the extra two shots.
Aug 9 2012 01:45:12:180PM	1120809018	Greg Wallace	Runaway shutdown. First attempt at repeating shot 1120710020. Try again.
Aug 9 2012 02:08:12:157PM	1120809019	Greg Wallace	Repeat attempt of shot 1120710020. Want 700 kW, 5.4 T, 550 kA, nebar=1.2e20. Got 450 kW at 110 kW/klystron, 90 deg. Got other parameters right. One fault, possible breakdown on plasma side based on reflected power but nothing visible on cameras. Next shot will repeat with 150 kW/klystron and reduce outer gap by 5 mm.
Aug 9 2012 02:19:35:967PM	1120809020	Greg Wallace	Three early faults at 150 kW/klystron, 90 deg. Looks like could be plasma side breakdown on reflected power signals but nothing on camera. Discharge nearly goes limited just before the LH pulse starts. Crossover problem? Try one more time for this condition.
Aug 9 2012 02:38:38:193PM	1120809021	Greg Wallace	One fault early in the LH pulse at 150 kW/klystron. Change in outer gap did not come through. Next shot will try again to repeat the same conditions as 1120710020, including longer LH pulse length (0.6-1.4 s) and outer gap reduced by 5 mm.
Aug 9 2012 02:49:17:797PM	1120809022	Greg Wallace	Sufficiently similar to shot 1120710020. One fault early when the plasma tries to go inner wall limited. Next shot will move on to 3T, 300 kA with density ramp (step 1 of run plan). LH parameters will remain constant.
Aug 9 2012 03:08:11:437PM	1120809023	Greg Wallace	Shot cycle hung.
Aug 9 2012 03:32:26:607PM	1120809024	Greg Wallace	Poor LH coupling. Disruption at 1.15 s. Plasma does not look very good. Next shot will move on to step 4, 4.1 T, 0.4 MA.
Aug 9 2012 03:45:24:807PM	1120809025	Greg Wallace	Field a little lower than expected (3.75 vs 4.1 T). Lots of tripping, looks like it might be due to breakdown on the vacuum side? Next shot will repeat with lower LH power (120 kW/klystron) to try to keep it from arcing(?).
Aug 9 2012 03:55:03:683PM	1120809026	Greg Wallace	Many faults again, but a little better. Perhaps the outer gap is too small at the higher density and that is causing the breakdown on the plasma side? Next shot will ramp RCUR by 5 mm between 0.6 and 1.4 s.
Aug 9 2012 04:11:20:413PM	1120809027	Greg Wallace	LH coupling better now, but still not great. Outer gap scan seemed to help. Next shot will go on to step 5 (6.3 T, 800 kA; repeat of 1120727023).
Aug 9 2012 04:32:45:513PM	1120809028	Greg Wallace	Good shot! Clean LH pulse. Next shot will repeat at higher power (170 kW/klystron) and decrease pulse length (0.8-1.3 s) to better match 1120727023.
Aug 9 2012 04:40:58:327PM	1120809029	Greg Wallace	Clean LH pulse at 170 kW/klystron, 90 deg, 6.3 T, 800 kA! Vloop changes almost exactly the same as shot 1120727023!!! Next shot will repeat with a density scan.
Aug 9 2012 04:57:52:073PM	1120809030	Greg Wallace	Another good shot! Still driving current! Not a huge density ramp but we will move on and try for one shot at 7 T, otherwise same conditions as shot 29.
Aug 9 2012 05:15:46:960PM	1120809031	Greg Wallace	Another good shot. 7T, clean LH. Last shot of the day. Still looks like some current drive. Very confused.

Physics Operator Comments
Aug 9 2012 09:21:07:997AM	1120809001	Ron Parker	Shot 1 disrupted early, around 0.65 s.
Aug 9 2012 09:30:29:423AM	1120809002	Ron Parker	Shot 2 ran full length.
Aug 9 2012 09:42:39:557AM	1120809003	Ron Parker	Shot 3 ran full length
Aug 9 2012 10:01:38:483AM	1120809004	Ron Parker	Shot 4 ran full length, density was increased by 0.1e20 m-2 relative to shots 2 and 3 Next shot will have an additional programmed increase in n of 0.1e20 m-2.
Aug 9 2012 10:19:50:013AM	1120809005	Ron Parker	Shot 5 ran full length. Continue to add 0.1e19 m-2 to the shot.
Aug 9 2012 10:42:15:297AM	1120809006	Ron Parker	Shot 6 ran full length, continuing to increment density
Aug 9 2012 10:43:05:250AM	1120809007	Ron Parker	Shot 7 ran full length. Next: Same density, ramping current up to 800 kA
Aug 9 2012 10:55:49:887AM	1120809008	Ron Parker	Shot 8 ran full length
Aug 9 2012 11:13:56:150AM	1120809009	Ron Parker	Shot 9 ran full length. Next: Increase density by 0.1e20 m-2
Aug 9 2012 11:27:45:657AM	1120809010	Ron Parker	Shot 10 ran full length Next: Increment density by 0.1e20 m-2
Aug 9 2012 11:40:37:683AM	1120809011	Ron Parker	Shot 11 ran full length Next: Increment density by 0.1e20 m-2
Aug 9 2012 11:56:31:707AM	1120809012	Ron Parker	Shot 12 ran full length. Continue ot increment density
Aug 9 2012 12:09:02:923PM	1120809013	Ron Parker	Shot 14 ran full length. Continue to increment density by 0.1e20 m-2/shot
Aug 9 2012 12:28:45:267PM	1120809014	Ron Parker	Shot 14 ran full length. Next: Reproduce (or at least reload) shot 3
Aug 9 2012 12:40:20:003PM	1120809015	Ron Parker	Shot 15 ran full length. This comletes Dan Brunner's par of the run (MP667) We will now begin with the MP665 part of the run, with Greg Wallace as SL. The first shot will be loaded from 1120710020
Aug 9 2012 01:10:06:380PM	1120809015	Ron Parker	We're having trouble moving the LH launcher in. So while this is being worked on (out of the cell!), we'll resume Dan's run. Beging by loading a 1.1 MA, nlo4 ~ 0.6e20 m-2
Aug 9 2012 01:23:52:800PM	1120809016	Ron Parker	Shot 16 ran full elngth, first shot at 1.1 MA in Dan's run Oops, make that 1.2 MA (but it should have been 1.1 MA, which will nbe programmed of next shot.)
Aug 9 2012 01:39:15:057PM	1120809017	Ron Parker	Shot 17 ran full length. LH launcher is fixed and in position. we'll start now on MP 665 beginning with a 5.4 T shot, 1120710020.
Aug 9 2012 01:49:50:550PM	1120809018	Ron Parker	Runaway shutdown. We attempted to go USN which may have cleaned the upper divertor. Try again with 5 ms more prefill
Aug 9 2012 02:21:14:383PM	1120809019	Ron Parker	Shot 19 came back, ran full length and had LH Next: same shot, increase LH power, and reduce outer gap by 1 cm
Aug 9 2012 02:23:17:967PM	1120809020	Ron Parker	Shot 20 ran full length, same outer gap, so the R_cur change must not have been loaded. Try again, decreasing outer gap by 1 cm, hopefully
Aug 9 2012 03:01:41:120PM	1120809021	Ron Parker	Shot 21 ran full length, same as 20
Aug 9 2012 03:00:07:250PM	1120809022	Ron Parker	Shot 22 ran with reduced outer gap, more or less reproducung 1120710020. Now we'll move on to lower field as described on the runplan, starting with 1120724012 but with a density ramp and I_p = 300 kA
Aug 9 2012 03:05:09:140PM	1120809023	Ron Parker	Shot 23 was a no power shot, water pressure in the alternator supply had dropped and forced a trip
Aug 9 2012 03:08:53:540PM	1120809023	Ron Parker	There are stillproblems in the alternator house -- alternator is not ramping up
Aug 9 2012 03:58:54:080PM	1120809024	Ron Parker	Shot 24 ran (300 kA, 3 T) but disrupted around 1.15 s. Rather than tune this shot, we'll start with shots at ~ 4 T
Aug 9 2012 03:39:25:637PM	1120809025	Ron Parker	Shot 25 ran full length, 400 kA, 3.8 T Good shot, but LH keeps tripping
Aug 9 2012 03:59:51:200PM	1120809026	Ron Parker	Shot 26 ran FL, but LH still tripping
Aug 9 2012 04:26:52:957PM	1120809027	Ron Parker	Shot 27 ran fulllength. LH better with an R_cur sweep, but still faulting
Aug 9 2012 04:25:40:563PM	1120809028	Ron Parker	Shot 28 ran full length and seems to have some current drive at 1.3e20
Aug 9 2012 04:43:34:473PM	1120809029	Ron Parker	Shot 29 ran FL. Good LH pulse, clear heating and current drive
Aug 9 2012 05:17:12:407PM	1120809031	Ron Parker	Full length. Good LH pulse, and clear falloff of LH efficiency at 6.9 T.

Engineering Operator Comments
Shot	Time	Type	Status	Comment
1	09:14:10:377AM	Plasma	Ok
2	09:26:46:140AM	Plasma	Ok
3	09:39:26:430AM	Plasma	Ok
4	09:52:04:600AM	Plasma	Ok
5	10:06:19:670AM	Plasma	Ok
6	10:19:57:980AM	Plasma	Ok
7	10:34:24:227AM	Plasma	Ok
8	10:53:30:773AM	Plasma	Ok
9	11:07:15:303AM	Plasma	Ok
10	11:20:43:627AM	Plasma	Ok
11	11:34:24:657AM	Plasma	Ok
12	11:47:51:573AM	Plasma	Ok
13	12:01:07:313PM	Plasma	Ok
14	12:14:40:637PM	Plasma	Ok
15	12:27:54:600PM	Plasma	Ok
16	01:14:57:627PM	Plasma	Ok
17	01:27:35:700PM	Plasma	Ok
18	01:42:05:013PM	Plasma	Ok
19	01:57:32:280PM	Plasma	Ok
20	02:10:16:840PM	Plasma	Ok
21	02:22:53:453PM	Plasma	Ok
22	02:38:07:957PM	Plasma	Ok
23	03:00:07:280PM	Plasma	Bad	ALT City H2o was low, No power shot.
24	03:20:26:793PM	Plasma	Ok
25	03:34:14:953PM	Plasma	Ok
26	03:47:29:107PM	Plasma	Ok
27	04:00:09:760PM	Plasma	Ok
28	04:18:54:257PM	Plasma	Ok
29	04:33:06:957PM	Plasma	Ok
30	04:49:37:380PM	Plasma	Ok
31	05:06:51:513PM	Plasma	Ok

System Availability

Aug 9 2012 09:13:52:407AM

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

Aug 9 2012 09:33:50:767AM

He Ninja gas puff (6 PSI) from C-Port plenum, LFS and HFS Hits plasma approximately at 1.3s trig1: 1.16s, 0.08s-> E_Top trig2: 1.22s, 0.08s-> B16-001

Aug 9 2012 10:31:48:387AM

Increase plenum pressure to 9 PSI Otherwise, everything unchanged: He Ninja gas puff (9 PSI) from C-Port plenum, LFS and HFS Hits plasma approximately at 1.3s trig1: 1.16s, 0.08s-> E_Top trig2: 1.22s, 0.08s-> B16-001

Aug 9 2012 10:48:34:400AM

Use F-port plenum for HFS puff now; He Ninja gas puff (9 PSI) from C-Port/F-port plenum, LFS/HFS Hits plasma approximately at 1.3s trig1: 1.16s, 0.08s-> E_Top trig2: 1.22s, 0.08s-> B16-001

Aug 9 2012 10:51:21:747AM

shutter sync fails. Try shutterless operation on Ph1 covered views: A1, A16, B1, C1, C16

Aug 9 2012 11:21:49:743AM

go also shutterless on Ph2. covered fibers: A1, A17, B1, B17, C1, C17

Aug 9 2012 11:52:20:210AM

Increased plenum pressure to 13 PSI