| Miniproposals | ||||||||||
| ||||||||||
|
| Operators | |
| Session leader(s): | Steve Wukitch,John Rice |
| Physics operator(s): | Jim Irby |
| Engineering operator(s): | Bill Parkin,Ed Fitzgerald |
| Engineering Operator Run Comment |
| MP289A: Double Barrier Formation PO:Irby SL:Wukitch/Rice EO:Fitzgerald/P |
| Session Leader Plans |
| Physics Operators Plans |
| Session Leader Summaries |
| Entered: Jul 7 2004 03:49:27:977PM |
| Author: To Be Determined |
| Session Leader Run Summary for 1010727 MP289A Double Barrier Studies All plasmas had double barriers from D and E antennas, with J antenna available with a variety of delay times and power levels. Several discharges demonstrated barrier arrest: 13, 17, 23, 24 and 25. Confirming earlier results, it appears that J port power in excess of 600 kW tends to destroy the barrier. Several shots had pellet injection so q profiles may be available. |
| Physics Operator Summaries |
| Entered: Jul 7 2004 04:37:14:317PM |
| Author: To Be Determined |
| Run 1010727 in Support of MP289A: Double Barrier Formation SL: Rice/Wukitch EO: Fitz/Parkin PO: Irby ECDC in D2 at 2.e-4 Torr overnight prior to run. ECDC in D2 between all shots Power systems as on 1010725010 Gas setup: fill B-top with 6 psi of D2 Hybrid enabled (PG4) fill B-side lower with 1 psi of Ar Hybrid enabled (PG1) fill B-side upper with 30 psi of D2 Hybrid DISABLED (PG2) fill C-side with 30 psi of D2 Hybrid enabled (PG3) fill J-bottom with 30 psi of He Hybrid DISABLED (PG5) Enable the following gate valves: ECE, DNB, VUV RF: XMTR 1 thru 4 in run-on by 8:00 AM Run starts at 09:00 and ends at 19:00 Summary: We started off by re-running shot 22 from yesterday by mistake. However, it was a very nice shot with 2 MW of rf and a long EDA with 100 kJ of stored energy. We lost several shots early because of injections from some undetermined source. We had several fizzles, about half of which were explainable. The rf group was able to couple in 5.1 MW of power today. H/D remained low all day, starting out as low as 3% and rising to 5 or 6% with rf. The AUG similarity run yesterday may have helped clean things up a bit. We also ran ECDC between shots. Problems: Start of day problems with CAMAC caused by a bad power supply in the edge TS rack. OH2U and OH2L coax resistances were both high (> 1.5 uOhms) on a couple of shots today. A disk quota problem kept of from getting TV data for a while. Score: Plasmas 20 Fizzles 5 Duds 3 Cycles 28 |
| Session Leader Comments | |||
| Jul 27 2001 09:57:52:373AM | 1010727001 | John Rice | great shot! however, no ITB |
| Jul 27 2001 09:58:04:843AM | 1010727002 | John Rice | fiz |
| Jul 27 2001 10:20:07:483AM | 1010727003 | John Rice | no H-mode, no ITB, no J camac problems other than that, great shot |
| Jul 27 2001 10:36:09:260AM | 1010727004 | John Rice | fiz |
| Jul 27 2001 11:04:00:353AM | 1010727005 | John Rice | no H-mode, early disruption |
| Jul 27 2001 11:25:02:940AM | 1010727006 | John Rice | ITB, no J port, dirsupted 1 s |
| Jul 27 2001 11:45:40:340AM | 1010727007 | John Rice | dirsupted .65 s |
| Jul 27 2001 12:10:23:437PM | 1010727008 | John Rice | H-L transition killed barrier good J port |
| Jul 27 2001 12:40:14:640PM | 1010727009 | John Rice | disrupted at 0.68s |
| Jul 27 2001 12:49:30:510PM | 1010727010 | John Rice | dud |
| Jul 27 2001 01:16:09:427PM | 1010727011 | John Rice | no H-mode, no ITB at 1.2 MW |
| Jul 27 2001 01:31:09:183PM | 1010727012 | John Rice | fiz |
| Jul 27 2001 01:56:42:473PM | 1010727013 | John Rice | no H-mode or ITB at 1.5 MW J port ok |
| Jul 27 2001 02:17:54:343PM | 1010727014 | John Rice | great ITB no J port |
| Jul 27 2001 02:36:25:313PM | 1010727015 | John Rice | fiz |
| Jul 27 2001 02:58:42:187PM | 1010727016 | John Rice | great ITB no J |
| Jul 27 2001 03:24:49:443PM | 1010727017 | John Rice | great ITB stabilized by J port |
| Jul 27 2001 03:44:01:230PM | 1010727018 | John Rice | great ITB, terminates when J reaches 600 KW |
| Jul 27 2001 03:58:11:220PM | 1010727019 | John Rice | dudley |
| Jul 27 2001 04:19:43:873PM | 1010727020 | John Rice | dudley |
| Jul 27 2001 04:48:09:433PM | 1010727021 | John Rice | higher D and E power higher J power but not steady ITB |
| Jul 27 2001 05:07:06:220PM | 1010727022 | John Rice | higher D and E power higher J power nearly 4.5 MW total H-L transition at 0.84 s |
| Jul 27 2001 05:34:09:747PM | 1010727023 | John Rice | higher D and E power higher J power nearly 5 MW total early injection delayed barrier formation, so the initial arrest was at lower density weird shot |
| Jul 27 2001 05:50:05:290PM | 1010727024 | John Rice | similar to 023 but disrupted earlier |
| Jul 27 2001 06:18:36:330PM | 1010727025 | John Rice | similar to 023 and 024 sawteeth disappear around 1.1 s |
| Jul 27 2001 06:32:43:560PM | 1010727026 | John Rice | similar to 023, 024 and 025 pellet at 1.15 s |
| Jul 27 2001 06:51:19:417PM | 1010727027 | John Rice | fizzley |
| Jul 27 2001 07:02:37:987PM | 1010727028 | John Rice | J port hard on over 5 MW |
| Physics Operator Comments | |||
| Jul 27 2001 08:28:29:030AM | Jim Irby | Did cold start: rtnode -- data loaded, A matrix responds rtnode -- data loaded, M matrix responds rtnode -- data loaded, PID matrix responds RT_NODE Done Loaded shot 1010725010 into segment 2 Loaded shot 1010726022 into segment 1 | |
| Jul 27 2001 09:27:49:237AM | 1010727001 | Jim Irby | Plasma into rampdown PO error ---- forgot to load/clean shot 1010725010 --- got shot 22 from yesterday Beautiful shot with long EDA but the wrong one! |
| Jul 27 2001 09:59:02:780AM | 1010727002 | Jim Irby | 6 minutes of ECDC Had problems with RF and ECE CAMAC --- No problems found, will just try again (worked yesterday) Loaded 1010725010 -- should have 700 kA, with TF ramp this time Fizzle ---- Time (ms): 0 5 10 25 ---------------------------------------- Ip (kA): -0.4242 -10.8009 -21.1775 -15.9892 dIp/dt (kA/ms): -1.0185 -2.2890 -2.2923 0.3815 pressure (mTorr): 0.0885 0.0856 0.0895 0.0905 Bz0 (mT): -4.3950 -0.6698 0.1371 17.1970 Br0 (mT): 0.4803 -0.3599 -0.3294 -0.1782 Too much gas |
| Jul 27 2001 10:25:26:983AM | 1010727003 | Jim Irby | Reduced gas from 28 to 25 ms Plasma to 1.3 s --- injections at .55 and 1.17 No ECDC before this shot, but will have before next |
| Jul 27 2001 10:39:00:847AM | 1010727004 | Jim Irby | Repeat shot (w/o injections I hope) 6 minutes of ECDC at 2e-4 Torr in D2 Fizzle --- probably too high a BR0 Time (ms): 0 5 10 25 ---------------------------------------- Ip (kA): -0.4469 -13.3950 -26.3658 -18.6061 dIp/dt (kA/ms): -1.4010 -2.6693 -1.5282 -0.1283 pressure (mTorr): 0.0895 0.0916 0.0926 0.1002 Bz0 (mT): -4.6105 -2.2105 -0.9145 16.5623 Br0 (mT): 0.5391 0.0199 -0.2898 -0.3199 Should have caught it last shot --- gas too high also |
| Jul 27 2001 11:49:30:193AM | 1010727005 | Jim Irby | Reduced gas by 1 ms Dropped Br0 from .002 to .0015 T Plasma to 0.84 s ---- injections start at 0.83 |
| Jul 27 2001 11:26:53:273AM | 1010727006 | Jim Irby | Dropped nl_04 to 1.e20 from 1.2 e20 Reduced gas another ms --- pressure a little high at t = 5ms Plasma to 1.06 s --- got a pellet that probably killed us Time (ms): 0 5 10 25 ---------------------------------------- Ip (kA): -0.4242 -13.3950 -26.3431 -80.8432 dIp/dt (kA/ms): -1.3988 -2.6693 -2.9259 -6.1061 pressure (mTorr): 0.0818 0.0782 0.0800 0.0866 Bz0 (mT): -4.9417 -2.6334 -1.6088 17.9299 Br0 (mT): -0.5222 -0.9435 -1.1449 -1.5658 Will trim Bz0 and Br0, gas okay |
| Jul 27 2001 11:46:38:780AM | 1010727007 | Jim Irby | Br0 to .002 from .0015 T EF4 from -1300 to -1290 Amps Lost plasma at 0.66 s --- injection from where? --- lost videos |
| Jul 27 2001 12:21:33:077PM | 1010727008 | Jim Irby | Br0 from .002 to .00175 T ECDC for 5 minutes at 2e-4 Torr D2 Plasma to rampdown --- injection at j-port turn-on caused back transition H/D starting at 3% but rising to 6% with rf --- pretty clean 3.5 MW |
| Jul 27 2001 12:30:32:520PM | 1010727009 | Jim Irby | No PCS changes ECDC for 5 --- have been waiting until pressure is below 3e-6 for last few shots before starting shot sequence Lost plasma at 0.68 s ---- Steve W suspects rf |
| Jul 27 2001 12:52:22:317PM | 1010727010 | Jim Irby | EF4 to -1280 from -1290 Amps Reduced gas puff by 1 more ms --- now 22 ms Numerious rf changes to keep from disrupting Dud ---- Bz0 a little high |
| Jul 27 2001 01:14:51:750PM | 1010727011 | Jim Irby | EF4 from -1280 to -1290 Amps Plasma for 1.3 s, then a pellet... rf power too low for H-mode |
| Jul 27 2001 01:35:16:807PM | 1010727012 | Jim Irby | No PCS changes Fizzle --- pressure and fields look okay |
| Jul 27 2001 02:05:34:060PM | 1010727013 | Jim Irby | No PCS changes No ECDC Plasma for 1.5 s --- got in a pellet |
| Jul 27 2001 02:18:42:673PM | 1010727014 | Jim Irby | Repeat Plasma into rampdown --- no pellet H/D 4 to 5 % |
| Jul 27 2001 02:40:30:310PM | 1010727015 | Jim Irby | Fizzle --- Bz0 may be a little too positive |
| Jul 27 2001 03:00:43:957PM | 1010727016 | Jim Irby | EF4 from -1290 to -1300 Amps Gas puff to 21 ms Plasma to pellet time at 1.3 s |
| Jul 27 2001 03:32:51:823PM | 1010727017 | Jim Irby | Plasma to pellet time J-port beginning to look good --- nice barrier |
| Jul 27 2001 03:47:23:690PM | 1010727018 | Jim Irby | No changes Plasma ---- injection started around 1.05 s |
| Jul 27 2001 04:05:07:507PM | 1010727019 | Jim Irby | No PO changes Dud --- no clear reason why --- will repeat |
| Jul 27 2001 04:29:12:570PM | 1010727020 | Jim Irby | Repeat 5 minutes of ECDC was still run Dud! ---- Bz0 jumped 2 mT |
| Jul 27 2001 04:48:47:717PM | 1010727021 | Jim Irby | EF4 from -1290 to -1300 Amps Plasma for 1.24 s Bz0 still a little too positive H/D staying near 5% even with 3.5 MW of rf |
| Jul 27 2001 05:13:39:000PM | 1010727022 | Jim Irby | EF4 to -1310 from -1300 Amps Plasma for 1.3 s ---- 4.5 MW of rf H/D up to 6% |
| Jul 27 2001 05:30:20:360PM | 1010727023 | Jim Irby | No changes Plasma for 1.4 s --- 5.1 MW, 91 kJ, H/D about 5% |
| Jul 27 2001 05:51:29:713PM | 1010727024 | Jim Irby | No PO changes Plasma for 1.12 s, injections begin at 1.1 s ---- nothing seen on videos H/D abt 5% |
| Jul 27 2001 06:18:37:063PM | 1010727025 | Jim Irby | Plasma for 1.22 s --- 2 Pi diode radiation starts up at 1.18 s |
| Jul 27 2001 06:34:44:733PM | 1010727026 | Jim Irby | Plasma into rampdown even with pellet at 1.15 s Abt 4 MW when pellet turned off j-port |
| Jul 27 2001 07:02:03:097PM | 1010727027 | Jim Irby | Repeat Fizzle --- didn't wait for 3e-6 Torr basepressure, but that's probably not the problem --- pressure, fields look okay, but the breakdown was very late: 12 ms. |
| Jul 27 2001 07:07:34:740PM | 1010727028 | Jim Irby | Plasma --- 1.1 s or so --- rf power very briefly at 6 MW. |
| Engineering Operator Comments | ||||
| Shot | Time | Type | Status | Comment |
| 1 | 09:17:57:547AM | Plasma | Ok | |
| 2 | 09:53:26:240AM | Plasma | Ok | |
| 3 | 10:07:14:010AM | Plasma | Ok | |
| 4 | 10:31:38:483AM | Plasma | Ok | |
| 5 | 10:52:32:430AM | Plasma | Ok | |
| 6 | 11:16:00:070AM | Plasma | Ok | |
| 7 | 11:38:02:130AM | Plasma | Bad | oh1 type 1 fault |
| 8 | 12:00:09:380PM | Plasma | Ok | |
| 9 | 12:22:53:127PM | Plasma | Bad | OH1 breaker tripped type 2 f |
| 10 | 12:44:38:327PM | Plasma | Ok | |
| 11 | 01:05:01:630PM | Plasma | Ok | |
| 12 | 01:28:18:617PM | Plasma | Ok | |
| 13 | 01:44:50:143PM | Plasma | Ok | |
| 14 | 02:08:47:520PM | Plasma | Ok | |
| 15 | 02:33:58:590PM | Plasma | Ok | |
| 16 | 02:50:07:413PM | Plasma | Ok | |
| 17 | 03:11:35:847PM | Plasma | Ok | |
| 18 | 03:33:36:890PM | Plasma | Ok | |
| 19 | 03:55:46:027PM | Plasma | Ok | |
| 20 | 04:17:09:443PM | Plasma | Ok | |
| 21 | 04:35:18:087PM | Plasma | Ok | |
| 22 | 04:58:20:760PM | Plasma | Ok | |
| 23 | 05:20:20:550PM | Plasma | Ok | |
| 24 | 05:42:00:500PM | Plasma | Ok | |
| 25 | 06:03:04:083PM | Plasma | Ok | |
| 26 | 06:24:15:380PM | Plasma | Ok | |
| 27 | 06:44:42:600PM | Plasma | Ok | |
| 28 | 06:57:29:513PM | Plasma | Ok | |