Miniproposals

Miniproposal: 560 Date Filed: 7/29/2009 Title: High density fueling and density limits First Author: Martin Greenwald Session Leader: Martin Greenwald (shots 11-30)

Miniproposal: 563 Date Filed: 7/30/2009 Title: Toroidal asymmetry of impurity seeding in support of ITER divertor gas injection requirements First Author: Richard Pitts Session Leader: Brian Labombard (shots 1-10)

Engineering Operator Run Comment

automatically entered by signon - please replace with real comment

Session Leader Plans

Entered: Aug 25 2009 03:44:40:817PM

Author: Brian Labombard

MP#563 "Toroidal asymmetry of impurity seeding in support of ITER divertor gas injection requirements" Goal We will attempt to finish up the ohmic L-mode density scan, dialing up some NL04 ~ 1.4e20 discharges. If things go well, we will try adding ICRF power to see if toroidal variations in divertor radiation are affected. Setup NINJA should be filled to 12 PSI N2. Reload shot#1090814019. Shot Plan A. Set up 1.0 MA, 5.4 tesla, NL04 ~ 1.4e20 m-2 Take a shot without N2 injection. Set up NINJA to puff N2 starting at 0.8 seconds for 0.2 seconds duration. Verify that N diagnostic signals are good: Chromex, VUV, CXRS (NV) Run through the capillary sequence (one shot for each): K30-012 D30-012 H30-012 B30-012 F30-012 Take a shot without N2 puff. Run through capillary sequence again (or a sparser set) B. Add ICRF power at ~1 MW level. Compare K_BOT_10 response to puffing at K and B capillaries. Compare 1MW power from D, E, J antennas

Entered: Aug 26 2009 12:00:51:600PM

Author: Martin Greenwald

The second half of this run will be looking at density limits in helium. Field should be 5.3-5.4 T, Ip 0.75 - 0.8 MA. We'll ramp the density continuously and look at the temperature profile evolution and edge fluctuations as the limit is approached. Reaching the limit in helium was somewhat tricky. The plasma seems to "take up" helium readily, but during the switchover from deuterium, we had to compensate for changing rates of D flux as the walls unloaded. Most shots had runaways generated during startup, which we'd like to avoid. We used the normal outboard piezo valves so that the ninja could be used to puff gas for the gpi views. By the last shot (033) we seemed to have figured out what to do - so that's the shot to start with. When we reach that part of the run, we'll want the normal piezo plus Bside upper filled with helium to 30-40 psi. Ninjas filled with D2 as per the needs of GPI.

Physics Operators Plans

Session Leader Summaries

Entered: Aug 26 2009 02:33:44:533PM

Author: Brian Labombard

Run Summary for first half of 1090826 MP#563 "Toroidal asymmetry of impurity seeding in support of ITER divertor gas injection requirements" Things started off ok. Shot #1 was exactly what we wanted, NL04 ~ 1.4e20. Shot#2 was with the first divertor capillary puff -- very nice. Then we had to joke about it being a boring run and that Ian would not have much to do as PO today -- we paid a steep price for these comments. Shots 3-6 disrupted. Injections (evidence of Mo) appeared to be the culprit, although we turned of the N2 puff just in case (shot#7). This shot did not disrupt. On shots 8 and 9, things appeared to settle down. We puffed from D30-012 and H30-012 locations on these with reduced injection rate. Then on shot 10, the early disruption problem returned, with no apparent means to control/eliminate it. At this time (noon), it became clear that we would not be able to take the requisite ~10 constant shots with the gas puff location systematically moved around the divertor toroidally. So we decided to not waste any more run time and to hand over the run to Martin, allowing him to get an early start on MP#560. It is not clear at this time how we are going to collect these data. Perhaps we could try again when the moly injections are not so severe. Or maybe the cryopump would help, controlling the density during current ramp-down, thereby eliminating the current ramp-down disruption that occurs on just about every shot that makes it that far. No data were collected in support of MP#563 today. Shot log: 1 -LSN, 1.0 MA, 5.4T, NL04 ~ 1.4 No probes scanning Next: puff N2 from K30-012 2 -LSN, 1.0 MA, 5.4T, NL04 ~ 1.4 ASP(+4) scanning 0.75, 1.1, 1.35 NINJA N2 570 torr, Trigger 0.8, Duration: 0.2 Capillary: K30-012, Torr-Liters: 4.8 3 -LSN, 1.0 MA, 5.4T, NL04 ~ 1.4 ASP(+5) scanning 0.75, 1.1, 1.35 NINJA N2 570 torr, Trigger 0.8, Duration: 0.2 Capillary: D30-012, Torr-Liters: 5.3 Disrupts at 1.1 Try again. 4 -LSN, 1.0 MA, 5.4T, NL04 ~ 1.4 ASP(+5) scanning 0.75, 1.1, 1.35 NINJA N2 569 torr, Trigger 0.8, Duration: 0.2 Capillary: D30-012, Torr-Liters: 5.5 Again disrupts at 1.1 Reduce N2 pressure to 10 psi 5 -LSN, 1.0 MA, 5.4T, NL04 ~ 1.4 ASP(+5) scanning 0.75, 1.1, 1.35 NINJA N2 382 torr, Trigger 0.8, Duration: 0.2 Capillary: D30-012, Torr-Liters: 3.2 Disrupts at 0.5 s Try again 6 -LSN, 1.0 MA, 5.4T, NL04 ~ 1.4 ASP(+5) scanning 0.75, 1.1, 1.35 NINJA N2 381 torr, Trigger 0.8, Duration: 0.2 Capillary: D30-012, Torr-Liters: 3.2 Disrupts at 0.62 s NINJA off for next shot. 7 -LSN, 1.0 MA, 5.4T, NL04 ~ ramps 1.15 to 1.35 no NINJA, no probes scanning Next: NINJA back on 8 -LSN, 1.0 MA, 5.4T, NL04 ~ ramp 1.3 to 1.4 ASP(+5) scanning 0.75, 1.1, 1.35 NINJA N2 381 torr, Trigger 0.8, Duration: 0.2 Capillary: D30-012, Torr-Liters: 3.0 9 -LSN, 1.0 MA, 5.4T, NL04 ~ ramp 1.35 to 1.48 ASP(+5) scanning 0.75, 1.1, 1.35 NINJA N2 380 torr, Trigger 0.8, Duration: 0.2 Capillary: H30-012, Torr-Liters: 3.0 10 -LSN, 1.0 MA, 5.4T NINJA N2 380 torr, Trigger 0.8, Duration: 0.2 Capillary: B30-012, Torr-Liters: 3.0 early disruption - it's back. Noon time - It is now clear that we will not be able to complete two rotations of the divertor puff in the time left for this 1/2 day run. So we are handing the run over early to Martin to continue with MP#560

Entered: Aug 26 2009 05:57:10:880PM

Author: Martin Greenwald

This was a reasonably successful run. We quickly re-established the helium density limit shot from 1090820. The limiting point was moved from the upper nose to the inner wall midplane. This was repeated for about 8 shots to collect TS data and for the GPI diagnostic. Some spectral channels of the TS system saturated, but it seems like most time points would be recoverable with more customized fitting. A deuterium gas puff was provided for GPI which got good data from the 2 fast cameras and the inner wall diode array. The helium discharges had slightly more peaking than comparable deuterium shots ne0/ was about 1.5 for all densities. Next we turned on the ICRF, starting with shot 22, to see how far we could get heating at high densities. The neutral density was much lower than for shots with similar plasma densities in deuterium and it was possible to couple full power. We reached 75 - 80 % of the limit, but were unable to go farther in the time allowed. Density limit studies with full power ICRF in L-mode would be possible with a bit more work. Starting with shot 24, we ran a diverted equilibrium, starting with 3MW ICRF. The density, not surprisingly, did not go as high as the limited shots. The following shots had more RF power and stronger puffing, but showed a very strong pump-out as soon as the RF was turned on. It was suggested that the divertor and edge temperatures had risen sufficiently to plug the divertor and temporarily cut off fueling. The density slowly recovered, reaching approximately the level it had attained before the RF. At high power the edge temperature became quite hot - Te95 was above 200 eV according to TS. Shots 28 and 30 had brief (30-40 msec) h-modes immediately after the RF turn on. Shots for further analysis: Shot nebar n/n_limit Picrf Topology 1090826011 4.9e20 0.89 limited (nose) 1090826013 4.3e20 0.93 limited (inner wall) 1090826014 4.2e20 0.90 limited (inner wall) 1090826015 4.6e20 0.98 limited (inner wall) 1090826016 4.9e20 1.01 limited (inner wall) 1090826017 4.9e20 0.99 limited (inner wall) 1090826018 4.6e20 0.94 limited (inner wall) 1090826019 4.7e20 1.00 limited (inner wall) 1090826020 2.8e20 0.61 limited (inner wall) 1090826021 3.1e20 0.63 limited (inner wall) 1090826022 4.0e20 0.81 2.5 limited (inner wall) 1090826023 3.8e20 0.77 3.1 limited (inner wall) 1090826024 3.4e20 0.67 3.2 diverted 1090826025 3.6e20 0.71 3.6 diverted 1090826026 3.6e20 0.73 4.1 diverted 1090826028 3.8e20 0.75 4.1 diverted 1090826030 3.8e20 0.71 4.0 diverted

Physics Operator Summaries

Entered: Aug 26 2009 05:14:25:987PM

Author: Ian Hutchinson

Summary 1090826 --------------- The first part of the day was devoted to high density 1MA shots for MP563 toroidal asymmetry of impurity seeding with N2 ninja puff. Some good data was obtained but, because of the number of disruptions, the SL felt it could not be completed and punted to MP560 High Density fueling and density limits. For this second part a good number of shots were Helium fueled to the density limit. A phenomenon of divertor choking was observed with ICRF heated cases where the reheating of the edge plasma caused the particles all to be pumped into the lower divertor with a consequent drop in core density by almost a factor of 2. These plasmas could be driven back to high density by further puffing. Continued operation in Helium led to lower and lower initial density (for the same fill puff). This was mostly compensated by increasing the fill puff to 40ms at the end. Even so, the initial density was getting too low and runaways were beginning to be a problem. Scorecard --------- Shot,Duration(s),Ipmax(MA),Result Shot,Duration(s),Ipmax,Result | 01 1.883 0.998 Plasma | 02 1.722 0.997 Plasma | | 03 1.090 1.062 Plasma | 04 1.068 1.033 Plasma | | 05 0.500 0.979 Plasma | 06 0.625 1.032 Plasma | | 07 1.911 1.005 Plasma | 08 1.735 1.002 Plasma | | 09 1.740 1.000 Plasma | 10 0.386 0.864 Plasma | | 11 1.109 0.797 Plasma | 12 0.300 0.739 Plasma | | 13 0.682 0.768 Plasma | 14 0.713 0.835 Plasma | | 15 1.055 0.850 Plasma | 16 1.045 0.836 Plasma | | 17 1.057 0.845 Plasma | 18 0.968 0.867 Plasma | | 19 0.941 0.835 Plasma | 20 0.663 0.817 Plasma | | 21 0.732 0.865 Plasma | 22 1.102 0.864 Plasma | | 23 1.089 0.873 Plasma | 24 1.167 0.847 Plasma | | 25 1.245 0.827 Plasma | 26 1.244 0.837 Plasma | | 27 0.608 0.794 Plasma | 28 1.128 0.833 Plasma | | 29 0.495 0.820 Plasma | 30 1.015 0.839 Plasma | Date 1090826: 30 shots. 30 plasmas. 0 fizzles. 0 duds. 0 System Error. (Plasma = Ip gt 60.0 kA Dud = H_alpha lt 0.40 V) Total plasma duration: 31.02 s (exceeding -99 kA)

Session Leader Comments
Aug 26 2009 10:53:07:920AM	1090826001	Brian Labombard	1 -LSN, 1.0 MA, 5.4T, NL04 ~ 1.4 No probes scanning Next: puff N2 from K30-012
Aug 26 2009 10:53:16:560AM	1090826002	Brian Labombard	2 -LSN, 1.0 MA, 5.4T, NL04 ~ 1.4 ASP(+4) scanning 0.75, 1.1, 1.35 NINJA N2 570 torr, Trigger 0.8, Duration: 0.2 Capillary: K30-012, Torr-Liters: 4.8
Aug 26 2009 10:53:27:590AM	1090826003	Brian Labombard	3 -LSN, 1.0 MA, 5.4T, NL04 ~ 1.4 ASP(+5) scanning 0.75, 1.1, 1.35 NINJA N2 570 torr, Trigger 0.8, Duration: 0.2 Capillary: D30-012, Torr-Liters: 5.3 Disrupts at 1.1 Try again.
Aug 26 2009 10:53:37:763AM	1090826004	Brian Labombard	4 -LSN, 1.0 MA, 5.4T, NL04 ~ 1.4 ASP(+5) scanning 0.75, 1.1, 1.35 NINJA N2 569 torr, Trigger 0.8, Duration: 0.2 Capillary: D30-012, Torr-Liters: 5.5 Again disrupts at 1.1 Reduce N2 pressure to 10 psi
Aug 26 2009 10:53:47:903AM	1090826005	Brian Labombard	5 -LSN, 1.0 MA, 5.4T, NL04 ~ 1.4 ASP(+5) scanning 0.75, 1.1, 1.35 NINJA N2 382 torr, Trigger 0.8, Duration: 0.2 Capillary: D30-012, Torr-Liters: 3.2 Disrupts at 0.5 s Try again
Aug 26 2009 10:53:59:683AM	1090826006	Brian Labombard	6 -LSN, 1.0 MA, 5.4T, NL04 ~ 1.4 ASP(+5) scanning 0.75, 1.1, 1.35 NINJA N2 381 torr, Trigger 0.8, Duration: 0.2 Capillary: D30-012, Torr-Liters: 3.2 Disrupts at 0.62 s NINJA off for next shot
Aug 26 2009 10:54:11:950AM	1090826007	Brian Labombard	7 -LSN, 1.0 MA, 5.4T, NL04 ~ ramps 1.15 to 1.35 no NINJA, no probes scanning Next: NINJA back on
Aug 26 2009 10:51:27:527AM	1090826008	Brian Labombard	8 -LSN, 1.0 MA, 5.4T, NL04 ~ ramp 1.3 to 1.4 ASP(+5) scanning 0.75, 1.1, 1.35 NINJA N2 381 torr, Trigger 0.8, Duration: 0.2 Capillary: D30-012, Torr-Liters: 3.0 Next: H30-012
Aug 26 2009 11:01:07:513AM	1090826009	Brian Labombard	9 -LSN, 1.0 MA, 5.4T, NL04 ~ ramp 1.35 to 1.48 ASP(+5) scanning 0.75, 1.1, 1.35 NINJA N2 380 torr, Trigger 0.8, Duration: 0.2 Capillary: H30-012, Torr-Liters: 3.0 Next:B30-012
Aug 26 2009 11:22:46:303AM	1090826010	Brian Labombard	10 -LSN, 1.0 MA, 5.4T NINJA N2 380 torr, Trigger 0.8, Duration: 0.2 Capillary: B30-012, Torr-Liters: 3.0 early disruption - it's back.
Aug 26 2009 12:03:46:180PM	1090826010	Brian Labombard	Noon time - It is now clear that we will not be able to complete two rotations of the divertor puff in the time left for this 1/2 day run. So we are handing the run over early to Martin to continue with MP#560
Aug 26 2009 12:36:08:863PM	1090826011	Martin Greenwald	High density helium, disrupts at 1.2 sec nebar ~ 4e20; 85% of density limit still running on inner nose from last run try limiting on midplane for next shot
Aug 26 2009 12:43:46:633PM	1090826012	Martin Greenwald	early disruption, 0.3 sec (gas puff for GPI at 0.95 sec)
Aug 26 2009 01:09:52:533PM	1090826013	Martin Greenwald	disruption a bit later - at 0.7 sec density spikes to 3.8e20 just before disruption, 90% of limit density rise rate may be too high...
Aug 26 2009 01:17:28:800PM	1090826014	Martin Greenwald	Steady rapid density rise to 4e20, disrupts at 0.7 sec ~90% of limit density profiles are fairly peaked - ne0/ ~ 1.5 throughout density ramp
Aug 26 2009 01:31:05:353PM	1090826015	Martin Greenwald	slower ramp, lasts til 1.1 sec reaches 4.e20, 96% of density limit ninja at ~0.9 - good gpi data, but diodes saturate
Aug 26 2009 01:56:25:410PM	1090826016	Martin Greenwald	Similar to previous shot nebar ~ 4.e20 n/nlimit~1 a few gpi diodes saturated
Aug 26 2009 02:12:59:760PM	1090826017	Martin Greenwald	very similar to previous shots 4.1e20 100% of density limit on next shot move gpi puff earlier
Aug 26 2009 02:25:39:953PM	1090826018	Martin Greenwald	gpi puff was at 0.7 increased density earlier, earlier disruption but density similar nebar ~ 4e20 95% of limit
Aug 26 2009 02:37:24:207PM	1090826019	Martin Greenwald	gpi puff at .7 again discharge similar, disrupts slightly earlier nebar to 4.2e20 n/nlimit ~ 0.96
Aug 26 2009 02:55:48:137PM	1090826020	Martin Greenwald	gpi puff at 0.42 disrupts much earlier ~ 0.7 sec at only 60% of limit next shot puff with outer ninja only
Aug 26 2009 03:11:20:157PM	1090826021	Martin Greenwald	early gpi puff Similar result, lasts only another 50 msec
Aug 26 2009 03:29:05:030PM	1090826022	Martin Greenwald	gpi puff back to 1 second ICRF on at 0.7 seconds - got 2.5 MW clean, 3.5 MW total some signs of heating density to 3.6e20 about 80% of limit
Aug 26 2009 03:43:22:873PM	1090826023	Martin Greenwald	Prf to 3MW, 4MW total density reaches 3.3, 75% of density limit Some heating, radiation only about 50% of input power next - try diverting...
Aug 26 2009 03:54:16:020PM	1090826024	Martin Greenwald	Diverted, Prf to 3MW but no sign of H-mode density to 3.2e20, 70% of density limit
Aug 26 2009 04:12:20:590PM	1090826025	Martin Greenwald	strong pump-out when RF comes on. 80% of limit before, < 50% after then density builds up 3.5 MW RF, no H-mode
Aug 26 2009 04:23:44:017PM	1090826027	Martin Greenwald	similar to previous shot Prf to 4MW, no h-mode but Te95 getting quite hot
Aug 26 2009 04:27:21:140PM	1090826027	Martin Greenwald	earlier disruption - before RF maybe something falls in
Aug 26 2009 04:47:19:853PM	1090826028	Martin Greenwald	very like 26 Prf at 4 MW, edge quite hot Te95 over 200 eV, brief H-mode at 0.75 seconds
Aug 26 2009 04:56:09:293PM	1090826029	Martin Greenwald	disrupts at 0.5 seconds
Aug 26 2009 05:12:35:673PM	1090826030	Martin Greenwald	Similar to shot 28, Prf to 4MW, brief H-mode density was 3.6e20 just before Rf and again just before disruption corresponds to about 75% of density limit drops in between

Physics Operator Comments
Aug 26 2009 08:47:56:043AM		Ian Hutchinson	Load from 1090814019. This shot achieves NL04 of 1.4e20 at 1MA. Load.
Aug 26 2009 09:17:40:367AM	1090826001	Ian Hutchinson	Plasma to rampdown. Disrupts at 200kA.
Aug 26 2009 09:34:04:073AM	1090826002	Ian Hutchinson	Plasma to rampdown. Disrupts at 600kA. Probably caused by big marfe. Add earlier gain step to Ip.
Aug 26 2009 09:48:44:080AM	1090826003	Ian Hutchinson	Disrupts at 1.08s.
Aug 26 2009 10:04:25:650AM	1090826004	Ian Hutchinson	Disrupts at 1.08s. Essentially the same as previous. Seems to be caused by N2.
Aug 26 2009 10:13:11:433AM	1090826005	Ian Hutchinson	Disrupts at 0.5s. Big injection.
Aug 26 2009 10:34:12:287AM	1090826006	Ian Hutchinson	Disrupts at 0.62s. Big injection at 0.6s. Turn off ninja. Lower nl04 point to 1.1e20. Load.
Aug 26 2009 10:43:10:413AM	1090826007	Ian Hutchinson	Plasma to rampdown. Reduce nl04 ramp rate and put to 1.4e20 at .6s. Load.
Aug 26 2009 10:58:30:937AM	1090826008	Ian Hutchinson	Plasma to rampdown. Early marfe eventually burns through. Seems caused by injections.
Aug 26 2009 11:17:42:677AM	1090826009	Ian Hutchinson	Plasma to rampdown.
Aug 26 2009 11:59:51:960AM	1090826009	Ian Hutchinson	Disrupts at .38s. Big injection.
Aug 26 2009 12:00:11:037PM	1090826010	Ian Hutchinson	Disprupts at .38
Aug 26 2009 12:29:04:423PM	1090826011	Ian Hutchinson	Switch over to MP560 Load from 1090820033. Import seg 1 from 1090826001. The startups from today. Load. Put He into B-main and B-side upper at 40psi, and Ninja at 15psi for GPI.
Aug 26 2009 12:43:53:477PM	1090826011	Ian Hutchinson	Plasma. Disrupts at 1.1s Set RXL to -2cm from -5cm Set clearin to -2cm to touch the inner wall. Install PG3 puff in segment 2 but leave nl04 alone. I am told that ninja is going to puff as well. Load.
Aug 26 2009 12:59:19:327PM	1090826012	Ian Hutchinson	Disrupts at .29s. Lower early PG3 voltage in both seg 1 and 2.
Aug 26 2009 01:11:28:470PM	1090826013	Ian Hutchinson	Disrupts at 0.68s. Still too much early gas. Reduce segment 1 puff. Delay final nlo4 high point to 1.3s. Fill puff to 25ms from 19ms.
Aug 26 2009 01:22:14:583PM	1090826014	Ian Hutchinson	Disrupts at .71s. A smoother density rise. Stays limited. Reduce segment 2 puff to 20.
Aug 26 2009 01:46:00:767PM	1090826015	Ian Hutchinson	Disrupts at 1.1s. Fill puff to 30ms. Lower nl04 gain to 1 at .45s. Prolong PG3 V at 20.
Aug 26 2009 02:23:33:670PM	1090826017	Ian Hutchinson	Disrupts at 1.03s. Fill puff to 35ms.
Aug 26 2009 02:55:05:963PM	1090826018	Ian Hutchinson	Disrupts at .95. Ninja puffed earlier.
Aug 26 2009 03:07:10:453PM	1090826020	Ian Hutchinson	Disrupts at .64s.
Aug 26 2009 03:50:39:707PM	1090826023	Ian Hutchinson	Disrupts at 1.1s. 3MW ICRF. Fill puff to 40ms. Clearin to -5mm. Rcur to .659. Aim to get a diverted plasma.
Aug 26 2009 04:15:46:200PM	1090826024	Ian Hutchinson	Disrupts at 1.16s. Density is held down by diversion. Clearin to zero. RXL to -1cm from -2cm Increase nl04 V to about 30.
Aug 26 2009 04:16:33:933PM	1090826025	Ian Hutchinson	Disrupts at about 1.2s. Interesting divertor blocking effect of reheat pumps the particles into the bottom.
Aug 26 2009 04:26:38:813PM	1090826026	Ian Hutchinson	Repeat. Increase nl04 gain to 2 at .7s to increase the puff there.
Aug 26 2009 04:46:14:103PM	1090826027	Ian Hutchinson	Disrupts at .577s because of an injection.
Aug 26 2009 04:50:09:400PM	1090826028	Ian Hutchinson	Disrupts at 1.12s Move segment 1 puff earlier to try to suppress runaways. Ease off segment 2 puff at .4s.
Aug 26 2009 05:13:51:003PM	1090826029	Ian Hutchinson	Disrupts at 0.5s Reduce duration of early puff.
Aug 26 2009 05:14:05:177PM	1090826030	Ian Hutchinson	Disrupts at 1s.

Engineering Operator Comments
Shot	Time	Type	Status	Comment
1	08:59:25:810AM	Plasma	Ok
2	09:13:37:553AM	Plasma	Ok
3	09:31:52:403AM	Plasma	Ok
4	09:45:54:517AM	Plasma	Ok
5	10:02:17:960AM	Plasma	Ok
6	10:15:20:263AM	Plasma	Ok
7	10:27:59:220AM	Plasma	Ok
8	10:40:51:947AM	Plasma	Ok
9	10:55:19:073AM	Plasma	Ok
10	11:14:39:817AM	Plasma	Bad	OH1 Type 1 Flt
11	12:26:42:140PM	Plasma	Ok
12	12:41:06:460PM	Plasma	Ok
13	12:54:00:057PM	Plasma	Ok
14	01:07:31:940PM	Plasma	Ok
15	01:20:15:850PM	Plasma	Ok
16	01:43:46:500PM	Plasma	Ok
17	02:04:32:163PM	Plasma	Ok
18	02:18:54:153PM	Plasma	Ok
19	02:32:41:270PM	Plasma	Ok
20	02:50:45:493PM	Plasma	Ok
21	03:05:45:827PM	Plasma	Ok
22	03:18:39:317PM	Plasma	Ok
23	03:31:15:820PM	Plasma	Ok
24	03:43:59:047PM	Plasma	Ok
25	03:56:43:753PM	Plasma	Ok
26	04:10:40:090PM	Plasma	Ok
27	04:23:08:517PM	Plasma	Ok
28	04:35:37:080PM	Plasma	Ok
29	04:48:10:197PM	Plasma	Bad	Self powered ckt fired on OH's Fuses checked OK
30	05:07:00:377PM	Plasma	Ok

System Availability

Aug 26 2009 08:59:00:390AM

System Available Comment Availability Changed Owner Description Who Can Change Active MHD no secured - tagged out Jun 02 2008 11:03AM (sears) Joe Snipes Active MHD Antenna sears,snipes BES yes 7 horizontal views spread out R_maj=[0.72-0.9m], 3 cm over the tokamak midplane (beam) Jul 09 2009 05:12PM (bespam) Bill Rowan Beam Emission Spectroscopy bespam,liao,rowan Bolometers yes 2pi (diode+foil), AXA, AXJ, WB3AX, WB4AX, LEDGE-AX working fine. MID/LEDGE/DIV foils still need calibrations applied Jul 28 2009 09:59AM (mlreinke) Matt Reinke Bolometers hutch,mlreinke Boronization no Bottle Removed from the Cell, Piezo box on Igloo Removed. System in safe mode for In-Vessel Access May 30 2008 02:25PM (dekow) Jim Irby Boronization dekow,irby CNPA no Single channel CNPA available as of 12/1707 Jun 10 2009 10:22AM (twf) Ron Parker Compact Neutral Analyzer parker Cryopump - Upper Divertor no Cyopump hardware is not yet reinstalled in the cell. Jul 14 2009 09:21PM (labombard) Brian LaBombard Upper Divertor Cryopump irby,labombard CXRS yes The wide-view toroidal array was installed, spatially and absolutely calibrated. There are 7 toroidal chords intersect the beam at the major_R_range=[74.2:83.6]cm. Spatial resolution: 1.2 cm. The F-top wide-view poloidal array was installed and spatially calibrated. There are 19 chords intersect the beam at the major_R_range=[0.65:0.9.]m. Spatial resolution: 1.22 cm. Jul 09 2009 05:16PM (bespam) Bill Rowan Charge Exchange Spectroscopy bespam,blip,liao,rachmcd,rowan D Alpha yes \ha2_bright is available; \SPECTROSCOPY::TOP.VUV.VIS_SIGNALS:MCP_VIS_SIG1 is not available Jul 01 2009 09:45AM (terry) Jim Terry Balmer Alpha Monitor irby,terry,wolfe Dalsa yes system is aligned and operating; not yet calibrated Jul 14 2009 02:22PM (marmar) Earl Marmar Visible Bremsstrahlung marmar Disruption Mitigation no safely disabled; ready to be dismantled May 28 2008 10:22AM (granetz) Robert Granetz Gas Jet granetz,whyte Divertor IR no   Mar 06 2007 10:50AM  Glen Wurden Divertor IR Digital Video gwurden,terry Divertor IR Spectroscopy no   Mar 06 2007 10:51AM  Glen Wurden Divertor IR Spectroscopy gwurden,terry DNB no power locked & tagged out; gate valve disabled May 28 2008 10:03AM (granetz) Robert Granetz Diagnostic Neutral Beam dterry,granetz,gung ECDC no 6/10/09 Magnetron relocated to west wall in cell at H-port. All controls and hardware have been installed but need to be tested prior to full operation. Magnetron Unplugged and Red tagged, PEI breaker red tagged, Safe for In-Vessel Activity Jun 10 2009 02:35PM (dekow) Jim Irby 2.45 GHz, 3 kW, discharge cleaning system dekow,irby,pfeiffer FRC-ECE yes The lower freq. 16 channels are ready. Still need calibration and signal level adjustments Jul 14 2009 12:15PM (phillips) Perry Phillips Heterodyne ECE-32 channels phillips G-Side Ratiomatic yes Gauge installed. Controller repaired. Aug 23 2009 10:36PM (toland) Brian LaBombard G-side ratiomatic ionization gauge labombard,toland Glow Discharge no 6/10/09: Paddles meggered at 1000 v to machine ground (>300 Mohm) prior to closing the vacuum chamber. Plugs for Power Supply and Controls Unplugged and Red Tagged, Safe for In-Vessel Access Jun 10 2009 01:47PM (dekow) Jim Irby 1 kV, 5 A, glow discharge system dekow,dterry,irby GPC yes Operational. Jul 28 2009 04:23PM (hubbard) Amanda Hubbard ECE Polychromater hubbard,schmidt GPC2 yes Most channels operational. Jul 28 2009 04:23PM (hubbard) Amanda Hubbard ECE Polychromater hubbard,schmidt GPI yes The Xpt-view, the midplane-view cameras are operational. The innerwall GPI (coupled to the fast-diodes) is available. Jul 01 2009 09:45AM (terry) Jim Terry Gas Puff Imaging terry,zweben H/D yes poses no safety hazard for people working around the machine Jun 18 2009 01:04PM (marmar) Earl Marmar H/D Ratio marmar HEAT no Disconnect switch is open, reg tagged and locked. Shunt Trip Breaker is opened. Safe for in-vessel work. Jun 04 2008 12:24PM (dekow) Gary Dekow - Machine Heaters - burke,dekow Hirex Jr yes Hirex-Jr has been installed and tested Jun 17 2009 11:54AM (rice) John Rice High Resolution X-Ray ince,rice Hirex Sr yes currently only one detector is operational, off-axis He-like argon emission Jul 14 2009 10:01AM (rice) John Rice High Resolution X-Ray ince,rice HXR no In safe mode (high voltage turned off) May 27 2008 09:19PM (schmidt) Ron Parker Hard X-Ray Array parker,schmidt ICRF D-Antenna yes operational at 80 MHz Jul 21 2009 04:49PM (wukitch) Steve Wukitch D-port antenna wukitch,ylin ICRF E-Antenna yes antenna and FFT operational Jul 21 2009 04:49PM (wukitch) Steve Wukitch E-port antenna wukitch,ylin ICRF J-Antenna yes available for conditioning and testing Jul 21 2009 04:50PM (wukitch) Steve Wukitch J-port antenna wukitch,ylin Lower Hybrid no Breaker locked and tagged out. Waveguide disassembly started. Open Waveguides have been shorted. May 28 2008 09:47AM (dterry) Ron Parker Lower Hybrid dterry,parker,wallaceg LPI no Beam line removed May 30 2008 02:09PM (bose) Earl Marmar Lithium Pellet Injector bose,marmar Ly-alpha yes Midplane, WB4-LY, LEDGE-LY all collecting data but processed data not in tree. WB1-LY not attached. Jul 07 2009 01:01PM (mlreinke) Matt Reinke Lyman alpha cameras labombard,mlreinke McPherson yes Collecting spectra but control system problem is not reporting voltages to tree Jul 28 2009 10:00AM (mlreinke) Jim Terry VUV Spectrometer mlreinke,terry Michelson yes Operational. Recalibrated 7/27/09. Jul 28 2009 04:22PM (hubbard) Amanda Hubbard ECE Te Profiles hubbard,schmidt MKS yes Gauges are on. B-bottom is not operating - bad sensor head? Jul 14 2009 09:12PM (labombard) Brian LaBombard Baratron pressure gauges labombard MLP no System is in edge lab. Version 2 drivers ready to test. Needs a student to help work on it. Jul 14 2009 09:20PM (labombard) Brian LaBombard Mirror Langmuir Probe Electronics System labombard MSE no As of 6/10/09, MSE is calibrated & ready to go. Awaiting DNB. Jun 10 2009 10:34AM (sscott) Steve Scott Motional Stark Effect jinseok,sscott Neutrons yes Neutron detectors are calibrated and ready to go. Voltages will be turned on prior to first plasma. Jun 10 2009 10:35AM (fiore) Catherine Fiore Neutron Detectors fiore Neuts and Hards yes Operational --- Uncalibrated and needs to be positioned at port Jun 25 2009 05:08PM (irby) Jim Irby X-Ray/Neutron Detector at K-Hor irby NINJA no Capillaries were tested in-vessel. Plenum has a leak and needs fixing. Jul 14 2009 09:14PM (labombard) Brian LaBombard NINJA gas puff labombard,terry PCI yes System operable. Channel 7 is dead. Aug 21 2009 06:49PM (ntsujii) Miklos Porkolab Phase Contrast Imaging arai,edlund,ennever,ntsujii,porkolab Penning Gauges yes High voltage is enabled (on during INIT, off during RECOOL). Jun 30 2009 09:42PM (labombard) Brian LaBombard Penning Ionization Gauges labombard Plasma TV yes WIDE1, WIDE2 (chan 33), DANT, JANT and DIV are operational. Jul 01 2009 09:46AM (terry) Jim Terry Video of plasma via several cameras dekow,irby,terry,wolfe Polarimeter no Safe for Machine Entry Sep 14 2007 12:17PM (irby) Jim Irby C-Mod Polarimeter irby Power - Alternator Air Switch yes Checked and Operational as of 06/18/09 Jun 19 2009 08:04AM (irby) Gary Dekow feeds all the other supplies cochran,dekow,dterry,irby Power - PEI yes Operational ---- ECDC running as required Jun 19 2009 08:06AM (irby) Gary Dekow PEI System cochran,dekow,dterry,irby Power - TMX yes Checked out and ready for Magnet Tests as of 06/18/09 Jun 19 2009 08:07AM (irby) Gary Dekow Ef2s,. EFCs and A-Coils byford,cochran,dekow,dterry,irby Power Systems yes Checked out and ready for Magnet Tests as of 06/18/09 Jun 19 2009 08:07AM (irby) Jim Irby C-Mod Magnet Supplies byford,cochran,dekow,dterry,irby Probe Array - ISD yes Array is operational with new cPCI data system. Probe 14 has open circuit. Jul 14 2009 09:17PM (labombard) Brian Labombard Inner Lower Divertor Probe Array labombard Probe Array - LH no LH launcher not installed. Cables are unplugged at the A-port rack. Jul 14 2009 09:16PM (labombard) Brian LaBombard Lower Hybrid Probe Array labombard Probe Array - OSD yes Array is operational with new cPCI data system. Jul 14 2009 09:16PM (labombard) Brian LaBombard Outer Lower Divertor Probe Array labombard Probe Array - UDIV yes Array is operational with new cPCI data system. Probe 13 has a bad cable (open). Jul 14 2009 09:17PM (labombard) Brian LaBombard Upper Divertor Probe Array labombard Reflectometer yes Since 1090824xxx, all channels are operational. Aug 25 2009 09:31AM (dominguez) Earl Marmar Reflectometer dominguez,marmar Scanning Probe - ASP yes Probe is operational. Needs plasma conditioning. Jul 14 2009 09:18PM (labombard) Brian LaBombard A-Port Scanning Probe labombard Scanning Probe - FSP yes Probe is operational. Needs plasma conditioning. Jul 14 2009 09:18PM (labombard) Brian LaBombard F-Port Scanning Probe labombard Scanning Probe - WASP yes System connected to A-port WASP. Needs plasma testing. Jul 14 2009 09:19PM (labombard) Brian LaBombard Inner Wall Scanning Probe labombard,nsmick Sparker yes Sparker now at K-Hor. Set for 100 uA of current. Will up to 200 uA before first plasma Jun 18 2009 01:01PM (irby) Jim Irby Field Emission Preionization for C-Mod dekow,irby,parkin TCI yes System restarted and aligned. Several chords available including NL04. Density Feedback available. Ready for plasma. Jun 18 2009 09:15AM (murray) Jim Irby Two-Color Interferometer irby,murray TS - Core yes 2 lasers working. 15 spatial channels operational. Initial (NOT final) Te calibration applied. ***No ne calibration yet*** Aug 05 2009 08:44AM (jwhughes) Jerry Hughes Core Thomson scattering jwhughes,yma,zhang TS - Edge yes Operational, Te calibration is thought to be good. Density is ***uncalibrated*** Aug 11 2009 02:31PM (jwhughes) Jerry Hughes Millimeter resolution edge Thomson scattering jwhughes,yma,zhang Vispec no 350 and 670 nm, 4 spatial channels Nov 28 2007 09:58AM (agraf) Alex Graf Visible Spectrometer agraf XTOMO yes cables attached, DAQ test run, ready for first plasma Jun 17 2009 03:42PM (mlreinke) Bob Granetz X-Ray Tomography granetz,mlreinke