| Miniproposals | ||||||||||
|
| Operators | |
| Session leader(s): | John Rice |
| Physics operator(s): | Jim Irby |
| Engineering operator(s): | Gary Dekow,Bill Parkin,Ed Fitzgerald,Bill Cochran |
| Engineering Operator Run Comment |
| MP#301 ITB foot location movement via Ip scan;SL:Rice; PO:Irby; EO:Dekow |
| Session Leader Plans |
| Physics Operators Plans |
| Session Leader Summaries |
| Entered: Jul 7 2004 03:49:30:727PM |
| Author: To Be Determined |
| Session Leader Run Summary for 1020927 MP301* ITB Foot, Ip Scan This run got off to a slow start with computer problems and 6 test shots. There were a few decent ITBs but this run was plaqued with RF trips. On shot 19 the current was lowered to 0.6 MA. There were the slightest hints of ITBs on shots 22 and 29, interestingly at 4.7 T, with an apparent inward movement of the ITB foot location, wetting our appetites. |
| Physics Operator Summaries |
| Entered: Jul 7 2004 04:37:16:317PM |
| Author: To Be Determined |
| Physop Summary for Friday, Sept 27, MP301 --- ITB Foot Location via Ip Scan EO: Cochran, Dekow, Fitzgerald, Parkin PO: Irby SL: Rice Summary ------- The machine ran extremely well today with only one fizzle caused by a slow upward drift in Bz0 unnoticed by the operator. Some adjustments in the prefill were required, but only rarely. We began the day with 6 cycle tests to debug a data system problem. The first plasma was produced on shot 007, but without rf. On shot 008 and 009 a good eda plasma at 4.5 T and 800 kA was produced with 2 MW of rf. Some faulting in e-port did not seem to greatly affect the plasma. Dropping the TF field to 4.4 T resulted in more elm-free like operation with h-mode bursts, even though the rf continued to run without faults. Some tweaks to the lower triangularity did not improve the elm-ness as had seemed to be the case in earlier runs. On shot 011 we had another bizarre case of 2 MW of clean rf power producing no h-modes, very little radiation, and increased H/D. John Rice indicated that the moly went up relative to the argon on this shot. We obtained an h-mode again on the next shot at 4.5 T. Later in the day, at currents of 600 kA, we had serious crossover problem resulting in large variations in the inner and outer gaps. Light from the inner wall seen on the wide angle video confirmed the effect. Adjustments in the Ip gain did not cure the problem as it had in the past. Since the rf turn-on was just before crossover, one might have assumed the rf coupling was affected. However, delaying the rf turn-on past the crossover time did not improve the faulting problems. Much of the day was spent trying to get enough rf power into these low current plasmas to produce an ITB. Some hints of the scaling of the ITB foot location with Ip were found, but this MP will certainly need more work. We continue to have problems getting both d- and e-port to run together. Shot 009 was possibly the best shot of the day in terms of rf power, with only one fault late in the shot. On shot 017 we reduced the request from e-port to 0.5 MW, asked for 1.5 MW from e-port, and were able to couple 2 MW of power with some faulting in e-port. On shot 019 we went to 600 kA, at which point operation became even more difficult. Score ----- Duds 00 Fizzles 01 Plasmas 25 Test 06 --------------------------------------------------------------------------- --------------------------------------------------------------------------- 1020927007 irby PHYSICS_OPERATOR Sep 27 2002 10:42:45:370AM . . . . . . . . . . . . . . . . . . . . Loaded shot 1020925007 into segment 2 as requested by SL Very nice plasma --- but forgot to tell rf to run Startup looks good ---------------------------------------------------------------------------- 1020927008 irby PHYSICS_OPERATOR Sep 27 2002 10:57:35:803AM . . . . . . . . . . . . . . . . . . . . No PCS changes --- just added some rf Very nice plasma --- long clean h-mode 2 MW of rf --- several trips on E H/(H+D) upto 6% at end of h-mode Startup good: Time (ms): 0 5 10 25 ---------------------------------------- Ip (kA): -3.0537 -16.0953 -27.8191 -106.0402 dIp/dt (kA/ms): -1.3275 -2.4757 -2.8595 -6.4530 pressure (mTorr): 0.0555 0.0628 0.0607 0.0507 Bz0 (mT): -3.0484 -0.5412 1.7461 22.9528 Br0 (mT): 0.2228 -0.2866 -0.5416 0.0498 pressure up slightly ---------------------------------------------------------------------------- 1020927009 irby PHYSICS_OPERATOR Sep 27 2002 11:16:32:840AM . . . . . . . . . . . . . . . . . . . . Prepuff from 29 to 27 ms Reduced RXL by 2 cm ---- Increase triangularity in an attempt to make plasma less elmfree. Plasma into rampdown Not much change in lower triag ---------------------------------------------------------------------------- 1020927010 irby PHYSICS_OPERATOR Sep 27 2002 11:37:12:473AM . . . . . . . . . . . . . . . . . . . . Dropped Tf from 4.53 to 4.4 T RXL from .0130 to .005 --- too small a change was made on shot 009 Got lower field Got increased lower triangularity --- but it's more elmfree? rf was a solid 2 MW ---------------------------------------------------------------------------- 1020927011 irby PHYSICS_OPERATOR Sep 27 2002 11:56:53:870AM . . . . . . . . . . . . . . . . . . . . RXL back to 0.015 Keeping TF at 4.4 Plasma into rampdown but No h-mode good rf --- 3 e-port trips John Rice reports lots of moly compared to the argon level on this shot --- cause or effect? ---------------------------------------------------------------------------- 1020927012 irby PHYSICS_OPERATOR Sep 27 2002 12:08:46:230PM . . . . . . . . . . . . . . . . . . . . Reloaded 1020927007 into seg 2 --- back to 4.5 T Did 5 minutes of ecdc in D2 at 2e-4 Torr fizzle Bz0 drifted up Time (ms): 0 5 10 25 ---------------------------------------- Ip (kA): -2.0833 -16.4355 -28.1594 -27.2069 dIp/dt (kA/ms): -1.4554 -2.5724 -1.3098 0.0813 pressure (mTorr): 0.0568 0.0543 0.0536 0.0536 Bz0 (mT): -2.0630 0.0569 1.8231 16.9981 Br0 (mT): 0.1049 -0.2090 -0.6122 -0.3415 ---------------------------------------------------------------------------- 1020927013 irby PHYSICS_OPERATOR Sep 27 2002 12:32:25:713PM . . . . . . . . . . . . . . . . . . . . EF4 from -1315 to -1330 Amps Prepuff back to 29 ms Plasma --- good h-mode again John reports rotation drop ---------------------------------------------------------------------------- 1020927014 irby PHYSICS_OPERATOR Sep 27 2002 12:39:06:163PM . . . . . . . . . . . . . . . . . . . . Repeat h-mode, but with brief dropout during rf trip ---------------------------------------------------------------------------- 1020927015 irby PHYSICS_OPERATOR Sep 27 2002 1:12:30:586PM . . . . . . . . . . . . . . . . . . . . EF4 to -1325 from -1330 Amps --- chase Bz0 TF to 4.7 T --- 128.653 kA 5 minutes of ecdc at 2e-4 Torr D2 Prefill from 29 to 27 ms Plasma but several trips on E-port ---------------------------------------------------------------------------- 1020927016 irby PHYSICS_OPERATOR Sep 27 2002 1:25:55:770PM . . . . . . . . . . . . . . . . . . . . Repeat of shot 15 Plasma --- E-port trips ---------------------------------------------------------------------------- 1020927017 irby PHYSICS_OPERATOR Sep 27 2002 1:36:59:260PM . . . . . . . . . . . . . . . . . . . . increased d-port power and reduced e-port to try and keep more constant rf good plasma ---------------------------------------------------------------------------- 1020927018 irby PHYSICS_OPERATOR Sep 27 2002 1:46:57:840PM . . . . . . . . . . . . . . . . . . . . TF to 5.4T Nice clean h-mode Looks like .5 MW is the best we can do out of e-port ---------------------------------------------------------------------------- 1020927019 irby PHYSICS_OPERATOR Sep 27 2002 2:16:22:990PM . . . . . . . . . . . . . . . . . . . . Ip to 600 kA; staying gat 5.4 T plasma --- trips in d and e ---------------------------------------------------------------------------- 1020927020 irby PHYSICS_OPERATOR Sep 27 2002 2:17:27:196PM . . . . . . . . . . . . . . . . . . . . plasam --- trips in d and e h/(h+d) 7-8% ---------------------------------------------------------------------------- 1020927021 irby PHYSICS_OPERATOR Sep 27 2002 2:23:52:240PM . . . . . . . . . . . . . . . . . . . . Try with just d-port plasma ---------------------------------------------------------------------------- 1020927022 irby PHYSICS_OPERATOR Sep 27 2002 2:35:08:056PM . . . . . . . . . . . . . . . . . . . . TF to 4.7 T, 129kA Prefill back to 29 ms Plasma but pretty ratty --- bad things at crossover ---------------------------------------------------------------------------- 1020927023 irby PHYSICS_OPERATOR Sep 27 2002 2:58:42:963PM . . . . . . . . . . . . . . . . . . . . Dropped Ip gain to zero around crossover time, then increased it back to normal. Plasma into rampdown, but still have crossover problem ---------------------------------------------------------------------------- 1020927024 irby PHYSICS_OPERATOR Sep 27 2002 3:15:31:416PM . . . . . . . . . . . . . . . . . . . . TF to 4.5 T Added 10 more ms of argon Delayed gain increase in Ip another 20 ms Ip may have looked a little better --- still lost inner gap Heavy faulting on d-port too ---------------------------------------------------------------------------- 1020927025 irby PHYSICS_OPERATOR Sep 27 2002 3:31:11:790PM . . . . . . . . . . . . . . . . . . . . Repeat with some rf I hope plasma but with very little rf move rf timing next shot to avoid crossover ---------------------------------------------------------------------------- 1020927026 irby PHYSICS_OPERATOR Sep 27 2002 3:44:31:410PM . . . . . . . . . . . . . . . . . . . rf on at .800 ms Delay in rf did not reduce the faulting on d-port e-port ran cleanly at 0.5 MW ---------------------------------------------------------------------------- 1020927027 irby PHYSICS_OPERATOR Sep 27 2002 3:55:13:523PM . . . . . . . . . . . . . . . . . . . . Ip request to 650 kA Ip gain back to 7 to 9. No change in crossover Only 1.4 MW of rf ---------------------------------------------------------------------------- 1020927028 irby PHYSICS_OPERATOR Sep 27 2002 4:08:11:986PM . . . . . . . . . . . . . . . . . . . . TF to 4.7 T No h-modes rf power low --- will raise for next shot ---------------------------------------------------------------------------- 1020927029 irby PHYSICS_OPERATOR Sep 27 2002 4:28:21:633PM . . . . . . . . . . . . . . . . . . . . request more rf better --- some h-mode activity rotation slows --- ITB forming ---------------------------------------------------------------------------- 1020927030 irby PHYSICS_OPERATOR Sep 27 2002 6:33:31:516PM . . . . . . . . . . . . . . . . . . . . attempt more rf plasma ---- still only a little more than 1 MW rf --- multiple h-modes ---------------------------------------------------------------------------- 1020927031 irby PHYSICS_OPERATOR Sep 27 2002 4:50:14:896PM . . . . . . . . . . . . . . . . . . . . repeat with more rf plasma --- a little more rf early ---- multi h's ---------------------------------------------------------------------------- 1020927032 irby PHYSICS_OPERATOR Sep 27 2002 6:32:00:590PM . . . . . . . . . . . . . . . . . . . . attempt to get more rf plasma --- multiple h-modes --- no usuable ITB --------------------------------------------------------------------------- Engineering setup for Friday, September 27th, Run 1020927 MP#301 ITB foot location movement via Ip scan Session leader: Rice Physics Operator: Irby ECDC overnight in D2 stopping by 07:00. Overnight bake at 60C Set up for possible ECDC in D2 between shots. Engineering setup as on 1020925007 Power systems the same as shot 1020822010 Gas setup: fill B-Top with 6 psi D2 Hybrid enabled (PG4) fill B-side lower with 1 psi Ar Hybrid enabled (PG1) fill B-side upper with 10 psi D2 Hybrid DISABLED (PG2) (for ECDC) fill C-side with 30 psi D2 Hybrid enabled (PG3) leave J-Bottom as is Hybrid DISABLED (PG5) Enable the following gate valves: ECE, VUV, DNB ------------------------------------------------------------------------------- RF Setup: FMIT#1 and 2 transmitters in Run On by 08:00 ------------------------------------------------------------------------------- |
| Session Leader Comments | |||
| Sep 27 2002 10:40:54:820AM | 1020927001 | John Rice | test |
| Sep 27 2002 10:41:01:130AM | 1020927002 | John Rice | test |
| Sep 27 2002 10:41:07:977AM | 1020927003 | John Rice | test |
| Sep 27 2002 10:41:13:400AM | 1020927004 | John Rice | test |
| Sep 27 2002 10:41:18:960AM | 1020927005 | John Rice | test |
| Sep 27 2002 10:41:24:227AM | 1020927006 | John Rice | test |
| Sep 27 2002 10:41:46:460AM | 1020927007 | John Rice | would have been trophy ITB were it not for no RF |
| Sep 27 2002 10:56:12:490AM | 1020927008 | John Rice | moderate ITB, but multiple E port trips |
| Sep 27 2002 11:18:16:407AM | 1020927009 | John Rice | weak ITB, good RF |
| Sep 27 2002 11:34:33:940AM | 1020927010 | John Rice | no ITB, multiple H-L transitions, good RF |
| Sep 27 2002 11:50:33:970AM | 1020927011 | John Rice | 4.4 T, no H-mode, no ITB |
| Sep 27 2002 12:03:35:120PM | 1020927012 | John Rice | phizzle |
| Sep 27 2002 12:33:29:107PM | 1020927013 | John Rice | decent ITB |
| Sep 27 2002 12:43:34:343PM | 1020927014 | John Rice | marginal ITB |
| Sep 27 2002 01:23:16:483PM | 1020927015 | John Rice | 4.7 T, RF trip, no ITB |
| Sep 27 2002 01:23:22:797PM | 1020927016 | John Rice | 4.7 T, RF trip, no ITB |
| Sep 27 2002 02:18:12:243PM | 1020927017 | John Rice | 4.7 T, RF trip, no ITB |
| Sep 27 2002 02:18:26:777PM | 1020927018 | John Rice | 5.4 T, RF trips, no ITB |
| Sep 27 2002 02:18:43:340PM | 1020927019 | John Rice | 5.4 T, RF trips, no ITB, 600 kA |
| Sep 27 2002 02:18:52:293PM | 1020927020 | John Rice | 5.4 T, RF trips, no ITB, 600 kA |
| Sep 27 2002 02:19:08:980PM | 1020927021 | John Rice | 5.4 T, D port only |
| Sep 27 2002 02:54:10:297PM | 1020927022 | John Rice | 4.7 T, indications of ITB |
| Sep 27 2002 03:03:00:457PM | 1020927023 | John Rice | 4.7 T, not the greatest shot ever |
| Sep 27 2002 03:09:20:763PM | 1020927024 | John Rice | 4.5 T, no H-mode, no ITB |
| Sep 27 2002 03:32:46:810PM | 1020927025 | John Rice | 4.5 T, no H-mode, no ITB |
| Sep 27 2002 03:41:17:750PM | 1020927026 | John Rice | 4.5 T, no H-mode, no ITB |
| Sep 27 2002 04:01:29:850PM | 1020927027 | John Rice | 4.5 T, no H-mode, no ITB |
| Sep 27 2002 04:30:29:640PM | 1020927028 | John Rice | 4.5 T, no H-mode, no ITB |
| Sep 27 2002 04:31:02:780PM | 1020927029 | John Rice | 4.7 T, H-mode, perhaps an ITB |
| Sep 27 2002 04:40:05:563PM | 1020927030 | John Rice | 4.7 T, no H-mode, no ITB |
| Sep 27 2002 04:57:58:910PM | 1020927031 | John Rice | 4.7 T, no ITB |
| Physics Operator Comments | |||
| Sep 27 2002 10:42:45:370AM | 1020927007 | Jim Irby | Loaded shot 1020925007 into segment 2 as requested by SL Very nice plasma --- but forgot to tell rf to run Startup looks good |
| Sep 27 2002 10:57:35:803AM | 1020927008 | Jim Irby | No PCS changes --- just added some rf Very nice plasma --- long clean h-mode 2 MW of rf --- several trips on E H/(H+D) upto 6% at end of h-mode Startup good: Time (ms): 0 5 10 25 ---------------------------------------- Ip (kA): -3.0537 -16.0953 -27.8191 -106.0402 dIp/dt (kA/ms): -1.3275 -2.4757 -2.8595 -6.4530 pressure (mTorr): 0.0555 0.0628 0.0607 0.0507 Bz0 (mT): -3.0484 -0.5412 1.7461 22.9528 Br0 (mT): 0.2228 -0.2866 -0.5416 0.0498 pressure up slightly |
| Sep 27 2002 11:16:32:840AM | 1020927009 | Jim Irby | Prepuff from 29 to 27 ms Reduced RXL by 2 cm ---- Increase triangularity in an attempt to make plasma less elmfree. Plasma into rampdown Not much change in lower triag |
| Sep 27 2002 11:37:12:473AM | 1020927010 | Jim Irby | Dropped Tf from 4.53 to 4.4 T RXL from .0130 to .005 --- too small a change was made on shot 009 Got lower field Got increased lower triangularity --- but it's more elmfree? rf was a solid 2 MW |
| Sep 27 2002 11:56:53:870AM | 1020927011 | Jim Irby | RXL back to 0.015 Keeping TF at 4.4 Plasma into rampdown but No h-mode good rf --- 3 e-port trips John Rice reports lots of moly compared to the argon level on this shot --- cause or effect? |
| Sep 27 2002 12:08:46:230PM | 1020927012 | Jim Irby | Reloaded 1020927007 into seg 2 --- back to 4.5 T Did 5 minutes of ecdc in D2 at 2e-4 Torr fizzle Bz0 drifted up Time (ms): 0 5 10 25 ---------------------------------------- Ip (kA): -2.0833 -16.4355 -28.1594 -27.2069 dIp/dt (kA/ms): -1.4554 -2.5724 -1.3098 0.0813 pressure (mTorr): 0.0568 0.0543 0.0536 0.0536 Bz0 (mT): -2.0630 0.0569 1.8231 16.9981 Br0 (mT): 0.1049 -0.2090 -0.6122 -0.3415 |
| Sep 27 2002 12:32:25:713PM | 1020927013 | Jim Irby | EF4 from -1315 to -1330 Amps Prepuff back to 29 ms Plasma --- good h-mode again John reports rotation drop |
| Sep 27 2002 12:39:06:163PM | 1020927014 | Jim Irby | Repeat h-mode, but with brief dropout during rf trip |
| Sep 27 2002 01:12:30:587PM | 1020927015 | Jim Irby | EF4 to -1325 from -1330 Amps --- chase Bz0 TF to 4.7 T --- 128.653 kA 5 minutes of ecdc at 2e-4 Torr D2 Prefill from 29 to 27 ms Plasma but several trips on E-port |
| Sep 27 2002 01:25:55:770PM | 1020927016 | Jim Irby | Repeat of shot 15 Plasma --- E-port trips |
| Sep 27 2002 01:36:59:260PM | 1020927017 | Jim Irby | increased d-port power and reduced e-port to try and keep more constant rf good plasma |
| Sep 27 2002 01:46:57:840PM | 1020927018 | Jim Irby | TF to 5.4T Nice clean h-mode Looks like .5 MW is the best we can do out of e-port |
| Sep 27 2002 02:16:22:990PM | 1020927019 | Jim Irby | Ip to 600 kA; staying gat 5.4 T plasma --- trips in d and e |
| Sep 27 2002 02:17:27:197PM | 1020927020 | Jim Irby | plasam --- trips in d and e h/(h+d) 7-8% |
| Sep 27 2002 02:23:52:240PM | 1020927021 | Jim Irby | Try with just d-port plasma |
| Sep 27 2002 02:35:08:057PM | 1020927022 | Jim Irby | TF to 4.7 T, 129kA Prefill back to 29 ms Plasma but pretty ratty --- bad things at crossover |
| Sep 27 2002 02:58:42:963PM | 1020927023 | Jim Irby | Dropped Ip gain to zero around crossover time, then increased it back to normal. Plasma into rampdown, but still have crossover problem |
| Sep 27 2002 03:15:31:417PM | 1020927024 | Jim Irby | TF to 4.5 T Added 10 more ms of argon Delayed gain increase in Ip another 20 ms Ip may have looked a little better --- still lost inner gap Heavy faulting on d-port too |
| Sep 27 2002 03:31:11:790PM | 1020927025 | Jim Irby | Repeat with some rf I hope plasma but with very little rf move rf timing next shot to avoid crossover |
| Sep 27 2002 03:44:31:410PM | 1020927026 | Jim Irby | rf on at .800 ms Delay in rf did not reduce the faulting on d-port e-port ran cleanly at 0.5 MW |
| Sep 27 2002 03:55:13:523PM | 1020927027 | Jim Irby | Ip request to 650 kA Ip gain back to 7 to 9. No change in crossover Only 1.4 MW of rf |
| Sep 27 2002 04:08:11:987PM | 1020927028 | Jim Irby | TF to 4.7 T No h-modes rf power low --- will raise for next shot |
| Sep 27 2002 04:28:21:633PM | 1020927029 | Jim Irby | request more rf better --- some h-mode activity rotation slows --- ITB forming |
| Sep 27 2002 06:33:31:517PM | 1020927030 | Jim Irby | attempt more rf plasma ---- still only a little more than 1 MW rf --- multiple h-modes |
| Sep 27 2002 04:50:14:897PM | 1020927031 | Jim Irby | repeat with more rf plasma --- a little more rf early ---- multi h's |
| Sep 27 2002 06:32:00:590PM | 1020927032 | Jim Irby | attempt to get more rf plasma --- multiple h-modes --- no usuable ITB |
| Engineering Operator Comments | ||||
| Shot | Time | Type | Status | Comment |
| 1 | 08:43:30:937AM | Test | Bad | Edge Analysis Jobs stuck on cmodws02 and cmodws07 |
| 2 | 09:13:37:730AM | Test | Bad | Camac Problems |
| 3 | 09:19:39:913AM | Test | Bad | Igor Stuck Again |
| 4 | 09:34:32:317AM | Test | Bad | Igor Stuck Again |
| 5 | 10:06:23:880AM | Test | Bad | Igor Problems |
| 6 | 10:22:03:813AM | Test | Ok | |
| 7 | 10:33:07:413AM | Plasma | Ok | |
| 8 | 10:45:50:563AM | Plasma | Ok | |
| 9 | 11:04:07:427AM | Plasma | Ok | |
| 10 | 11:26:31:593AM | Plasma | Ok | |
| 11 | 11:39:31:853AM | Plasma | Ok | |
| 12 | 12:01:32:473PM | Plasma | Ok | |
| 13 | 12:14:52:540PM | Plasma | Ok | |
| 14 | 12:30:29:787PM | Plasma | Ok | |
| 15 | 12:53:30:723PM | Plasma | Ok | |
| 16 | 01:07:12:967PM | Plasma | Ok | |
| 17 | 01:22:21:060PM | Plasma | Ok | |
| 18 | 01:38:16:560PM | Plasma | Ok | |
| 19 | 01:51:16:537PM | Plasma | Ok | |
| 20 | 02:04:07:467PM | Plasma | Ok | |
| 21 | 02:17:19:383PM | Plasma | Ok | |
| 22 | 02:31:26:003PM | Plasma | Ok | |
| 23 | 02:51:40:230PM | Plasma | Ok | |
| 24 | 03:04:33:910PM | Plasma | Ok | |
| 25 | 03:18:57:080PM | Plasma | Ok | |
| 26 | 03:32:07:120PM | Plasma | Ok | |
| 27 | 03:46:45:680PM | Plasma | Ok | |
| 28 | 03:59:40:800PM | Plasma | Ok | |
| 29 | 04:12:53:403PM | Plasma | Ok | |
| 30 | 04:28:37:433PM | Plasma | Ok | |
| 31 | 04:42:14:270PM | Plasma | Ok | |
| 32 | 04:55:32:623PM | Plasma | Ok | |