Miniproposals

Miniproposal: 706 Date Filed: 6/14/2012 Title: Fluctuation-induced heat and particle transport in the boundary plasma connection to criticlal gradi First Author: Brian Labombard Session Leader: Brian Labombard (shots 1-30)

Engineering Operator Run Comment

MP#706 - Fluctuation-induced heat and particle transport MP: 706 (LaBomb

Session Leader Plans

Entered: Jul 10 2012 01:48:41:160PM

Author: Brian Labombard

MP#706 - Fluctuation-induced heat and particle transport in the boundary plasma connection to critical gradient behavior and heat flux width scalings Goal: We will be using the new Mirror Probe System on the A-port drive in conjuction with GPI to record temperature, density and potential fluctations and the resultant transport fluxes. We will also gather some long-time series samples of fluctuations at the limiter radius with the mirror system. Diagnostic setup: Mirror system on A-port drive F-port scanning probe GPI with helium puffs Edge Thomson No ICRF, no LH, no cryopump Overnight ECDC in helium, standard parameters. Reload from Shot#1111208005. Establish 5.4 tesla, 0.55 MA discharge. Start at lowest density, NL04 ~ 0.3e20 A. 0.55 MA Shot #1 3 NL04 ~ 0.3 Optimize gaps and probe targeting Shot #4 5 NL04 ~ 0.45 Shot #6 7 NL04 ~ 0.6 Shot #8 9 NL04 ~ 0.75 B. Change to 0.8 MA Shot #10 11 NL04 ~ 0.45 Optimize gaps and probe targeting Shot #12 NL04 ~ 0.45 Dwell-scan ASP at limiter radius Shot #13 14 NL04 ~ 0.65 Shot #15 16 NL04 ~ 0.85 Shot #17 NL04 ~ 0.85 Dwell-scan ASP at limiter radius Shot #18 19 NL04 ~ 1.0 Shot #20 21 NL04 ~ 1.2 Shot #22 NL04 ~ 1.2 Dwell-scan ASP at limiter radius C. Change to 1.1 MA Shot #23 24 NL04 ~ 0.6 Optimize gaps and probe targeting Shot #25 26 NL04 ~ 0.9 Shot #27 28 NL04 ~ 1.3

Physics Operators Plans

Entered: Jul 10 2012 04:07:26:977PM

Author: Ron Parker

Physop plan and engineering setup for Wednesday, July 11, 2012. MP: 706 (LaBombard) PO: Parker ----------------- Engineering Setup ----------------- Run begins at 09:00 and ends at 17:00 Power systems as on: 1120629013 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 Enabled (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): NO LH(yes/no):NO Cryopump (yes/no): NO DNB (yes/no): not required Vessel temperature: 35/35/35 ------------------------------ ECDC Parameters (if requested) ------------------------------ gas and pressure: He at 5e-5 Torr sweep: 44/45/103 cm scan: 20/120 s

Session Leader Summaries

Entered: Jul 11 2012 09:00:25:803PM

Author: Brian Labombard

Run Summary for 1120711 MP#706 - Fluctuation-induced heat and particle transport in the boundary plasma -- connection to critical gradient behavior and heat flux width scaling The principal goal of this run was to collect profile data over a range of plasma conditions from the Mirror Langmuir Probe (MLP) drive system connected to the A-port scanning probe. This system has the unique capability of making simultaneous measurements of electron temperature, floating potential and ion saturation currents at each location of the four electrodes in a scanning probe (12 data signals total), all at ~1 MHz. From these data, fluctuation-induced heat and particle transport can in principle be computed - hence the title of the MP. This was a productive run, achieving much of the experimental plan. The effort began during yesterday's run, where the ASP, FSP and A-WASP probe systems were operated to support MP662 and to condition the ASP probe head for the mirror probe drive system. This ASP was successfully conditioned yesterday, although perhaps a bit too aggressively. Post-run inspection of the ASP probe head indicated some melt damage on the electron-drift side of the moly probe head, indicating that slide-away plasmas take their toll on scanning probes. Still, the ASP head performed well. The FSP also operated very well. Unfortunately, the A-WASP got damaged during yesterday's run (hit by the familiar power supply cross-over lurch which cases the inner gap to go to zero), and was not available for use today (electrodes shorted to ground or to each other). Just prior to the run, the MLP system was connected to the A-port scanning probe, with a standard Mach-probe head installed. The drive system operated flawlessly today, providing detailed Te, Vf, Isat measurements from each of the probe electrodes. Electron temperature fluctuations with peak values up to 100 eV were recorded by the system. Detailed analyses will need to be performed and critically assessed, but at face-value, the system appears to be a dream come true -- just plug it in to a probe and Te, Vf, and Isat data streams directly into your digitizer channels; all bias settings are handled automatically by the MLP. The MP called for performing density scans at each of three values of plasma current (0.55, 0.8, 1.1 MA) with 5.4 tesla field and to operate the probe in scanning and fixed position modes (at the limiter radius). We managed to finish the 0.55 and 0.8 MA portion of the MP with the probe scanning, but ran out of time and could not take the fixed-position data (0.8 MA). We did not have time to even attempt a 1.1 MA plasma. GPI was operated almost all day, puffing helium after 1.2 s in most discharges. This caused the density to rise above the programmed value after this time -- something we were willing to live with. Detailed Shot Log: A. Tuning-up discharges 01 - LSN, 0.56 MA, 5.4T, NL04 ~ 0.4 no probes scanning helium NINJA puff at 1.2 seconds raises density 02 - LSN, 0.56 MA, 5.4T, NL04 ~ 0.4 ASP(5), FSP(-20) @ 0.7, 1.0, 1.3s FSP at 40 eV ASP at 20 eV 03 - LSN, 0.56 MA, 5.4T, NL04 ~ 0.4 ASP(0), FSP(-17) @ 0.7, 1.0, 1.3s FSP at 50 eV ASP at 40 eV 04 - LSN, 0.56 MA, 5.4T, NL04 ~ 0.4 ASP(+2), FSP(-15) @ 0.7, 1.0, 1.3s FSP at 60 eV ASP at 50 eV B. Density Scan at 0.56 MA 05 - LSN, 0.56 MA, 5.4T, NL04 ~ 0.35 ASP(+3.5), FSP(-15) @ 0.7, 1.0, 1.3s 06 - LSN, 0.56 MA, 5.4T, NL04 ~ 0.55 ASP(+4), FSP(-15) @ 0.7, 1.0, 1.3s 07 - LSN, 0.56 MA, 5.4T, NL04 ~ 0.55 ASP(+4), FSP(-15) @ 0.7, 1.0, 1.3s 08 - LSN, 0.56 MA, 5.4T, NL04 ~ 0.7 ASP(+4), FSP(-15) @ 0.7, 1.0, 1.3s 09 - LSN, 0.56 MA, 5.4T, NL04 ~ 0.7 ASP(+4), FSP(-16) @ 0.7, 1.0, 1.3s ASP - arcing on first scan 10 - LSN, 0.56 MA, 5.4T, NL04 ~ 0.85 ASP(+4), FSP(-16) @ 0.7, 1.0, 1.3s Colder edge. Need to move probes deeper 11 - LSN, 0.56 MA, 5.4T, NL04 ~ jumps at MARFE, ~1.0 after ASP(+5), FSP(-15) @ 0.7, 1.0, 1.3s Upper x-point MARFE 0.588 to 1.1 s 12 - LSN, 0.56 MA, 5.4T, NL04 ~0.7 ASP(+5), FSP(-15) @ 0.7, 1.0, 1.3s 13- fizzle C. Density Scan at 0.8 MA 14 - LSN, 0.8 MA, 5.4T, NL04 ~0.4 ASP(+2), FSP(-18) @ 0.7, 1.0, 1.3s FSP too deep on last scan - modify ZXL ASP too shallow on last scan - modify RCUR 15 - LSN, 0.8 MA, 5.4T, NL04 ~0.4 ASP(+2), FSP(-17) @ 0.7, 1.0, 1.3s first dwell-scan attempt 16 - LSN, 0.8 MA, 5.4T, NL04 ~0.4 ASP(-6 dwell), FSP(-17) @ 0.7, 1.0, 1.3s FSP - NE,NW - floating, SE,SW - Isat ASP - 2 mm in front of limiter - dwell Injection at 0.94s causes disruption. Probes are ok. No evidence that probe(s) caused it. ** decision here to hold off on dwell scan data to the end ** 17 - fizzle 18 - fizzle 19 - LSN, 0.8 MA, 5.4T, NL04 ~0.65 ASP(+3), FSP(-17) @ 0.7, 1.0, 1.3s UFOs flying into plasma around ~1s FSP - sweep mode - could be deeper ASP - scanning - could be deeper 20 - LSN, 0.8 MA, 5.4T, NL04~0.65 ASP(+4), FSP(-16) @ 0.7, 1.0, 1.3s FSP - NE,NW - floating, SE,SW - Isat ASP - scanning 21 - LSN, 0.8 MA, 5.4T, NL04~0.87 ASP(+4), FSP(-16) @ 0.7, 1.0, 1.3s FSP - sweep mode ASP - scanning 22 - LSN, 0.8 MA, 5.4T, NL04~0.85 ASP(+4), FSP(-16) @ 0.7, 1.0, 1.3s FSP - NE,NW - floating, SE,SW - Isat ASP - scanning 23 - LSN, 0.8 MA, 5.4T, NL04~0.95 ramping ASP(+4), FSP(-17) @ 0.7, 1.0, 1.3s FSP - sweep mode ASP - scanning 24 - LSN, 0.8 MA, 5.4T, NL04~1.0 ASP(+4.5), FSP(-17) @ 0.7, 1.0, 1.3s FSP - NE,NW - floating, SE,SW - Isat ASP - scanning 25 - LSN, 0.8 MA, 5.4T, NL04~1.2 ASP(+4), FSP(-17) @ 0.7, 1.0, 1.3s FSP - sweep mode ASP - scanning 26 - fizzle 27 - LSN, 0.8 MA, 5.4T, NL04~1.2 ASP(+4), FSP(-17) @ 0.7, 1.0, 1.3s FSP - NE,NW - floating, SE,SW - Isat ASP - scanning D. Failed attempts to get dwell-scan data at NL04~1.2 and NL04~0.8 28- fizzle 29 -fizzle 30- fizzle E. No time for 1.1 MA plasmas

Physics Operator Summaries

Entered: Jul 11 2012 05:18:13:800PM

Author: Ron Parker

No problems today with running the shots, i.e., the data system, power supplies, PLC's etc. all ran without a hitch. The main issue that developed during the latter half of the run had to do with fizzles, most often but not always (see shot 13) caused by disruptions. A major disruption (mid pulse) occured on shot 16 and that required two fizzles to "clean up". Fizzles began to occur more regularly beginnning with shot 26. (On shot 25 and subsequent shots there were density limit disruptions during rampdown.)There is a strong correlation between the fizzles and a preceding disruption, but it is not clear how to tune the machine parameters to avoid them. It is conjectured that a disruption kicks up "dirt" which leaves the wall in a contaminated state and leads to a problem "burning out" on the subsequent shot. One or more fizzles then clean the wall, and eventually burnout occurs allowing a proper plasma to form. Since valuable machine time is lost due to fizzles it might be worthwhile to develop a mitigation method, e.g., between shot discharge cleaning.

Session Leader Comments
Jul 11 2012 09:16:54:873AM	1120711001	Brian Labombard	MLP connected on A-port drive. Reload from shot#1111208005 AWASP is not operating today 01 - LSN, 0.56 MA, 5.4T, NL04 ~ 0.4 no probes scanning helium NINJA puff at 1.2 seconds raises density gaps are good
Jul 11 2012 09:30:50:203AM	1120711002	Brian Labombard	02 - LSN, 0.56 MA, 5.4T, NL04 ~ 0.4 ASP(5), FSP(-20) @ 0.7, 1.0, 1.3s FSP at 40 eV ASP at 20 eV Next: repeat with probes deeper
Jul 11 2012 09:47:39:283AM	1120711003	Brian Labombard	03 - LSN, 0.56 MA, 5.4T, NL04 ~ 0.4 ASP(0), FSP(-17) @ 0.7, 1.0, 1.3s FSP at 50 eV ASP at 40 eV Next: repeat with probes deeper
Jul 11 2012 10:02:14:423AM	1120711004	Brian Labombard	04 - LSN, 0.56 MA, 5.4T, NL04 ~ 0.4 ASP(+3), FSP(-15) @ 0.7, 1.0, 1.3s FSP at 60 eV ASP at 50 eV Next: repeat with ASP deeper
Jul 11 2012 10:20:17:100AM	1120711005	Brian Labombard	05 - LSN, 0.56 MA, 5.4T, NL04 ~ 0.35 ASP(+3.5), FSP(-15) @ 0.7, 1.0, 1.3s Next: raise density
Jul 11 2012 10:39:02:677AM	1120711006	Brian Labombard	06 - LSN, 0.56 MA, 5.4T, NL04 ~ 0.55 ASP(+4), FSP(-15) @ 0.7, 1.0, 1.3s Next: repeat
Jul 11 2012 10:57:42:753AM	1120711007	Brian Labombard	07 - LSN, 0.56 MA, 5.4T, NL04 ~ 0.55 ASP(+4), FSP(-15) @ 0.7, 1.0, 1.3s Next: go to NL04 = 0.65
Jul 11 2012 11:17:07:600AM	1120711008	Brian Labombard	08 - LSN, 0.56 MA, 5.4T, NL04 ~ 0.7 ASP(+4), FSP(-15) @ 0.7, 1.0, 1.3s Next: repeat with improved outer gap program
Jul 11 2012 11:33:03:327AM	1120711009	Brian Labombard	09 - LSN, 0.56 MA, 5.4T, NL04 ~ 0.7 ASP(+4), FSP(-16) @ 0.7, 1.0, 1.3s ASP - arcing on first scan Next: increase to NL04 ~ 0.8
Jul 11 2012 11:52:42:103AM	1120711010	Brian Labombard	10 - LSN, 0.56 MA, 5.4T, NL04 ~ 0.85 ASP(+4), FSP(-16) @ 0.7, 1.0, 1.3s Colder edge. Need to move probes deeper Next: repeat, also with gap change
Jul 11 2012 12:04:29:680PM	1120711011	Brian Labombard	11 - LSN, 0.56 MA, 5.4T, NL04 ~ jumps at MARFE, ~1.0 after ASP(+5), FSP(-15) @ 0.7, 1.0, 1.3s Upper x-point MARFE 0.588 to 1.1 s Next: repeat with NL04 program at 0.7
Jul 11 2012 12:33:36:930PM	1120711012	Brian Labombard	12 - LSN, 0.56 MA, 5.4T, NL04 ~0.7 ASP(+5), FSP(-15) @ 0.7, 1.0, 1.3s Next: go to 0.8MA, NL04~0.4
Jul 11 2012 01:06:39:723PM	1120711014	Brian Labombard	14 - LSN, 0.8 MA, 5.4T, NL04 ~0.4 ASP(+2), FSP(-18) @ 0.7, 1.0, 1.3s FSP too deep on last scan - modify ZXL ASP too shallow on last scan - modify RCUR Next: repeat
Jul 11 2012 01:41:25:920PM	1120711016	Brian Labombard	16 - LSN, 0.8 MA, 5.4T, NL04 ~0.4 ASP(-6 dwell), FSP(-17) @ 0.7, 1.0, 1.3s FSP - NE,NW - floating, ES,SW - Isat ASP - 2 mm in front of limiter - dwell Injection at 0.94s causes disruption. Probes are ok. No evidence that probe(s) caused it. Next: repeat
Jul 11 2012 02:20:06:430PM	1120711019	Brian Labombard	19 - LSN, 0.8 MA, 5.4T, NL04 ~0.65 ASP(+3), FSP(-17) @ 0.7, 1.0, 1.3s UFOs flying into plasma around ~1s FSP - sweep mode - could be deeper ASP - scanning - could be deeper Next: repeat
Jul 11 2012 02:40:11:610PM	1120711020	Brian Labombard	20 - LSN, 0.8 MA, 5.4T, NL04~0.65 ASP(+4), FSP(-16) @ 0.7, 1.0, 1.3s FSP - NE,NW - floating, ES,SW - Isat ASP - scanning Next: go to NL04 ~ 0.85
Jul 11 2012 03:03:59:770PM	1120711021	Brian Labombard	21 - LSN, 0.8 MA, 5.4T, NL04~0.87 ASP(+4), FSP(-16) @ 0.7, 1.0, 1.3s FSP - sweep mode ASP - scanning Next: repeat
Jul 11 2012 03:13:31:673PM	1120711022	Brian Labombard	22 - LSN, 0.8 MA, 5.4T, NL04~0.85 ASP(+4), FSP(-16) @ 0.7, 1.0, 1.3s FSP - NE,NW - floating, ES,SW - Isat ASP - scanning Next: go to NL04 ~ 1.0
Jul 11 2012 03:42:27:800PM	1120711023	Brian Labombard	23 - LSN, 0.8 MA, 5.4T, NL04~0.95 ramping ASP(+4), FSP(-17) @ 0.7, 1.0, 1.3s FSP - sweep mode ASP - scanning Next: repeat
Jul 11 2012 03:43:18:737PM	1120711024	Brian Labombard	24 - LSN, 0.8 MA, 5.4T, NL04~1.0 ASP(+4.5), FSP(-17) @ 0.7, 1.0, 1.3s FSP - NE,NW - floating, SE,SW - Isat ASP - scanning Next: go to NL04 ~ 1.2
Jul 11 2012 03:59:05:130PM	1120711025	Brian Labombard	25 - LSN, 0.8 MA, 5.4T, NL04~1.2 ASP(+4), FSP(-17) @ 0.7, 1.0, 1.3s FSP - sweep mode ASP - scanning Next: repeat
Jul 11 2012 04:31:05:977PM	1120711027	Brian Labombard	27 - LSN, 0.8 MA, 5.4T, NL04~1.2 ASP(+4), FSP(-17) @ 0.7, 1.0, 1.3s FSP - NE,NW - floating, SE,SW - Isat ASP - scanning Next: repeat with ASP in dwell-scan mode

Physics Operator Comments
Jul 11 2012 09:06:00:650AM	1120711001	Ron Parker	Good morning. We are ready for 9:00 start. Shot 1111208005 loaded with 1120710018 startup He in NINJA, which is enabled (contrary to PO plan)
Jul 11 2012 09:18:25:267AM	1120711001	Ron Parker	Shot 1 ran OK, but runaways were close to shutting it down. For next shot, we'll increase the density programming early and increase PG3 gas to try to discourage runaway formation
Jul 11 2012 09:49:37:097AM	1120711002	Ron Parker	Shot 2 was OK, runaways under control
Jul 11 2012 09:50:04:893AM	1120711003	Ron Parker	Shoir 3 ran OK, but runaways coming back
Jul 11 2012 09:59:09:540AM	1120711004	Ron Parker	Shot 4 ran full length. Runawys OK but not as low as on shot 2. We'll keep increasing the pulsed gas throughput at commutation, PG3
Jul 11 2012 10:16:23:680AM	1120711005	Ron Parker	Shot 5 ran FL. Runaways OK, but not as low as I would like. Next: Increase density to 5e19 m-2.
Jul 11 2012 10:37:30:517AM	1120711006	Ron Parker	Shot 6 ran FL. Runaways low -- 3 units max Next: Pete and Repete were on a boat. Pete fell off. Who was left?
Jul 11 2012 10:54:14:880AM	1120711007	Ron Parker	Shot 7 ran FL. Runaways a bit high -- 50 units max Next: Program nl_04 for 6.5e19 m-2. Also add 2ms prefill
Jul 11 2012 11:15:01:753AM	1120711008	Ron Parker	Shot 8 ran FL. Next: Slight tune on R_CUR, namely linear increase of 1 mm by EOP.
Jul 11 2012 11:27:45:590AM	1120711009	Ron Parker	Shot 9 ran FL. Next: Program nl_04 to 8e19 m-2.
Jul 11 2012 11:43:42:963AM	1120711010	Ron Parker	Shot 10 ran FL. Next: Repeat, but increase R_CUR linearly by 1 mm.
Jul 11 2012 12:03:26:913PM	1120711011	Ron Parker	Shot 11 ran FL, but MARFED'd. Next: Repeat, but reduce density demand to 7e19 from 8e19 m-2.
Jul 11 2012 12:32:49:870PM	1120711012	Ron Parker	Shot 12 ran FL, nl_04 ~ 7e19 m-2 but no MARFE. Next: Raise I_P to 800 kA and repeat density scan.
Jul 11 2012 12:42:59:363PM	1120711013	Ron Parker	A fizzle -- no apparent reason. Run the shot again.
Jul 11 2012 12:58:39:520PM	1120711014	Ron Parker	Shot came back and ran FL -- 800 kA, nl_04 ~ 4e19 m-2. Next: Repeat
Jul 11 2012 01:13:58:900PM	1120711015	Ron Parker	Shot ran FL. Essentially same shot as #14, except for a couple of small tweaks in the equilibrium (ZCUR and RCUR). Next: Repeat
Jul 11 2012 01:38:06:220PM	1120711016	Ron Parker	Shot 16 disrupted at 0.94 s -- maybe probe induced? We'll repeat shot, but may need a fizzle or two to clean. Increase prefill by 2 ms to compensate for disruption effects.
Jul 11 2012 01:49:18:413PM	1120711017	Ron Parker	Fizzle, not unexpected. Try again.
Jul 11 2012 01:58:45:767PM	1120711018	Ron Parker	Fizzle again.
Jul 11 2012 02:21:38:883PM	1120711019	Ron Parker	Shot came back and ran FL. We've moved on to shot #13 in the run plan. Next: Repeat.
Jul 11 2012 02:40:20:210PM	1120711020	Ron Parker	Shot ran FL, which was fortunate since we had a big audience. Next move to 8e19 m-2 (Shots 15-16 on Run Plan)
Jul 11 2012 02:53:34:617PM	1120711021	Ron Parker	Shot 21 ran FL. Next: Repeat
Jul 11 2012 03:12:55:767PM	1120711022	Ron Parker	Shot 22 ran full length. Next: Move on to nl_04 = 1e20 m-2.
Jul 11 2012 04:48:04:313PM	1120711023	Ron Parker	Shot 23 ran FL. Next: repeat
Jul 11 2012 03:42:35:100PM	1120711024	Ron Parker	Shot 24 ran FL Moving on to nl_04 = 1.1e20 (request)
Jul 11 2012 04:04:31:327PM	1120711025	Ron Parker	Shot 25 ran FL Next: Repeat, with a 1 mm tweak on RCUR
Jul 11 2012 04:12:01:837PM	1120711026	Ron Parker	Fizzle -- why?
Jul 11 2012 04:28:28:853PM	1120711027	Ron Parker	Shot 27 came back. Next: Same shot with dwell-scan mode for ASP
Jul 11 2012 04:40:09:277PM	1120711028	Ron Parker	Fizzle, apparently due to density limit disruption at end of previous pulse, during rampdown. Next: Try again
Jul 11 2012 04:59:25:147PM	1120711029	Ron Parker	Fizzle
Jul 11 2012 05:05:39:490PM	1120711030	Ron Parker	Fizzle

Engineering Operator Comments
Shot	Time	Type	Status	Comment
1	09:06:30:577AM	Plasma	Ok
2	09:19:12:433AM	Plasma	Ok
3	09:33:40:230AM	Plasma	Ok
4	09:49:53:710AM	Plasma	Ok
5	10:07:15:020AM	Plasma	Ok
6	10:26:42:097AM	Plasma	Ok
7	10:45:11:790AM	Plasma	Ok
8	11:03:51:320AM	Plasma	Ok
9	11:19:55:280AM	Plasma	Ok
10	11:39:52:267AM	Plasma	Ok
11	11:57:12:263AM	Plasma	Ok
12	12:18:27:463PM	Plasma	Ok
13	12:37:48:250PM	Plasma	Ok
14	12:51:03:357PM	Plasma	Ok
15	01:07:18:973PM	Plasma	Ok
16	01:23:49:890PM	Plasma	Ok
17	01:42:37:627PM	Plasma	Ok
18	01:56:12:630PM	Plasma	Ok
19	02:11:42:410PM	Plasma	Ok
20	02:28:00:180PM	Plasma	Ok
21	02:43:33:403PM	Plasma	Ok
22	02:58:46:753PM	Plasma	Ok
23	03:15:05:290PM	Plasma	Ok
24	03:31:19:270PM	Plasma	Ok
25	03:53:03:483PM	Plasma	Ok
26	04:09:16:307PM	Plasma	Ok
27	04:21:47:153PM	Plasma	Ok
28	04:36:07:607PM	Plasma	Ok
29	04:48:33:850PM	Plasma	Ok
30	05:01:04:180PM	Plasma	Ok

System Availability

Jul 11 2012 09:05:31:230AM

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 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. 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 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