| Miniproposals | ||||||||||
|
| Operators | |
| Session leader(s): | Steve Wukitch |
| Physics operator(s): | Ron Parker |
| Engineering operator(s): | Bill Parkin,Bill Byford,Gary Dekow |
| Engineering Operator Run Comment |
| Boronization Recovery SL: Wukitch; PO: Parker; EO:Dekow/Byford/Parkin |
| Session Leader Plans |
| Physics Operators Plans |
| Session Leader Summaries |
| Entered: Jul 7 2004 03:49:35:040PM |
| Author: Steve Wukitch |
| Engineering setup for Fri. 5 Dec 2003 MP#355 --- ICRF Conditioning Session leader : Wukitch Physics operator: Parker Boronization overnight ECDC for 30 minutes post antenna vacuum conditioning in D2 at 2e-4 Torr Bake at 60 C overnight as well. Run begins at 09:00 and ends at 17:00. Power systems the same as on 1031204037. A-coils should be hooked up as on 1031204037 and the power supply should be 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 C-side with 30 psi D2 Hybrid enabled (PG3) Enable gatevalves (there will be no vacuum problems): ECE, VUV, DNB ------------------------------------------------------------------------------- RF Setup: All 4 transmitters in Run On by 08:00 ------------------------------------------------------------------------------- Session Leader Run Plan: Recondition RF antennas to power. Fiducial discharges (103120437) will be the target plasma: BT~5.4 T, Ip~1 MA, nl_04~0.8, right gap of 1 cm. ------------------------------------------------------------------------------- Yijun vacuum conditioned this morning post boronization Conditioning went extremely well and faster than previous boronization ------------------------------------------------------------------------------- 001-4,8,10,12,20,22 NTP 005 BT~5.4, Ip~1MA, nl_04~0.8, 1 cm gap D: 0.25, .5, .75, 1.0 MW in steps [0.6,1.5] sec E: 0.25, .5, .75, 1.0 MW in steps J: 0.5, 1.0, 1.5, 2.0 MW in steps result: plasma, H-mode, nl_04~1 D: ran faults in 1 MW step E: ran 2 faults late J: ran max faults 006 BT~5.4, Ip~1MA, nl_04~0.8, 1 cm gap D: 1.0 MW [0.6,1.5] sec E: 1.0 MW J: 2.0 MW result: plasma, H-mode, nl_04~0.9 D: ran 2 faults late E: ran 2 faults late J: ran max faults 007 BT~5.4, Ip~1MA, nl_04~0.8, 1 cm gap D: 1.1 MW [0.6,1.5] sec E: 1.1 MW J: 1., 1.6 MW in steps result: plasma, H-mode, nl_04~0.9 D: ran 6 faults E: ran 7 faults J: ran max faults but better 009 BT~5.4, Ip~1MA, nl_04~0.8, 1 cm gap D: 1.1 MW [0.6,1.5] sec E: 1.1 MW J: 1., 1.6 MW in steps result: plasma, H-mode, nl_04~0.9 D: ran 5 faults E: ran 4 faults J: ran max faults during step to 1.6 MW 011 BT~5.4, Ip~1MA, nl_04~0.8, 1 cm gap D: 1.1 MW [0.6,1.5] sec E: 1.1 MW J: 1.2, 1.6 MW in steps result: plasma, H-mode, nl_04~0.9 D: ran 5 faults E: ran 4 faults J: ran max faults during step to 1.6 MW 013 BT~5.4, Ip~1MA, nl_04~0.8, 1 cm gap D: 1.2 MW [0.6,1.5] sec E: 1.2 MW J: 1.4, 1.8 MW in steps result: plasma, H-mode, nl_04~0.9 D: ran 2 faults E: ran J: ran 2 faults 014 BT~5.4, Ip~1MA, nl_04~0.8, 1 cm gap D: 1.3 MW [0.6,1.5] sec E: 1.3 MW J: 1.6, 2.0 MW in steps result: plasma, H-mode, nl_04~0.9 D: ran 2 faults E: ran J: ran 2 faults 015 BT~5.4, Ip~1MA, nl_04~0.8, 1 cm gap D: 1.3 MW [0.6,1.5] sec E: 1.3 MW J: 1.6, 2.0 MW in steps result: plasma, H-mode, nl_04~0.9 D: ran 1 faults E: ran J: ran 3 faults 016 BT~5.4, Ip~1MA, nl_04~0.8, 1 cm gap D: 1.3 MW [0.6,1.5] sec E: 1.3 MW J: 1.6, 2.0 MW in steps result: plasma, H-mode, nl_04~0.9 - early disruption D: ran 1 faults E: ran J: ran 3 faults brief 200 kJ 017 BT~5.4, Ip~1MA, nl_04~0.8, 1 cm gap D: 1.4 MW [0.6,1.5] sec E: 1.4 MW J: 2.0, 2.4 MW in steps result: plasma, H-mode, nl_04~0.9 D: ran 9 faults E: ran 3 faults J: ran FMIT#3 screen overload gpc gate valve was closed 019 BT~5.4, Ip~1MA, nl_04~0.8, 1 cm gap D: 1.3 MW [0.6,1.5] sec E: 1.3 MW J: 2.2 MW result: plasma, H-mode D: ran 5 faults E: ran 1 fault J: ran 4 faults brief 207 kJ 021 BT~5.4, Ip~1MA, nl_04~0.8, 1 cm gap D: 1.3 MW [0.6,1.5] sec E: 1.3 MW J: 2.4 MW result: plasma, H-mode D: ran 3 faults E: ran J: ran 9 faults Antenna operation recovered fairly quickly after boronization. This boronization was a lighter than the previous and the second of the campaign. Previous campaigns had similar trends: recovery is faster than previous boronization; the first boronization requires more time to recover; and D and E-port antennas recover faster than J-port. A number of high power and high stored energy discharges were achieved and appear to be a significant improvement over discharges in the past campaign. Perhaps the plasma shape or conditioning or some combination of effects have improved the plasma performance. We can follow up on these trends in the upcoming MP376. A couple of the discharges (019) would have been better performance if the RF had not faulted early. This suggests the shot trajectory has an impact on the plasma performance could be important for high performance. |
| Physics Operator Summaries |
| Entered: Jul 7 2004 04:37:19:957PM |
| Author: Ron Parker |
| ;; This buffer is for notes you don't want to save, and for Lisp evaluation. ;; If you want to create a file, visit that file with C-x C-f, ;; then enter the text in that file's own buffer. Physop Summary for 1031205 Engineering Setup and Run Plan for 12/05/03 Purpose:Boronization Recovery Session Leader: Wukitch Physics operator: Parker Overnight boronization, followed by ECDC until 7:00. RF vacuum conditioning beginning at 8:00 followed by ECDC before run begins.No bakeout other than nominal for boronization (35 C). Run begins at ~09:00 and ends at 17:00. Power systems the same as on 1031204035 A-coils should be hooked up as on 1031204035 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 C-side with 30 psi D2 Hybrid enabled (PG3) Enable the following gate valves, assuming no vacuum problems: ECE, VUV, DNB ------------------------------------------------------------------------------- RF Setup:All Transmitters in Run On by 07:30 Run Plan We'll plan to run the fudicial discharge produced on the last shot of 12/04. Since this is a post-boronization run be prepared for fizzles, duds and disruptions. Run Summary There was quite a long delay getting started due to 3 unrelated problems: the Alc Server, a charging power supply and a gas leak on Albany Street. The Alc Server went down during the night before the run and was inoperative during the run prep. Josh and Tom got it back up at about 10:00, thus 1 hour was lost. At that point it was discovered that the charging power supply was not functional, and that took approximately 2.5 hours to repair. During this time, a leak in a gas main on Albany Street developed and we were advised to ramp the alternator down. Fortunately the leak was capped before the alternator speed reached below 800 RPM and we were able to bring it back to speed without an additional loss of run time beyond that caused by repairing the power supply. The run itself went fairly well, considering that this was a post boronization run, the machine having been boronized the night before. The shots that ran were all the same current, about 1MA with a target density of 0.9e20 m-3. Some good H-modes were obtained, particularly early in the run. Shots 6, 7 and 9 were notable. Later in the run, the RF was more intermittent as were the H-Modes. The maximum stored energy reached was ~ 200 kJ at ~5 MW. One notable feature of these discharges is that the current was driven cleanly to zero in all but one of the shots that did not disrupt before ramp down. Scorecard: 20 plasma attempts, 13 useful shots (3 of which disrupted) 7 fizzles, no duds. |
| Session Leader Comments | |||
| Dec 5 2003 01:40:16:570PM | Steve Wukitch | Engineering setup for Fri. 5 Dec 2003 MP#355 --- ICRF Conditioning Session leader : Wukitch Physics operator: Parker Boronization overnight ECDC for 30 minutes post antenna vacuum conditioning in D2 at 2e-4 Torr Bake at 60 C overnight as well. Run begins at 09:00 and ends at 17:00. Power systems the same as on 1031204037. A-coils should be hooked up as on 1031204037 and the power supply should be 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 C-side with 30 psi D2 Hybrid enabled (PG3) Enable gatevalves (there will be no vacuum problems): ECE, VUV, DNB ------------------------------------------------------------------------------- RF Setup: All 4 transmitters in Run On by 08:00 ------------------------------------------------------------------------------- Session Leader Run Plan: Recondition RF antennas to power. Fiducial discharges (103120437) will be the target plasma: BT~5.4 T, Ip~1 MA, nl_04~0.8, right gap of 1 cm. ------------------------------------------------------------------------------- Yijun vacuum conditioned this morning post boronization Conditioning went extremely well and faster than previous boronization ------------------------------------------------------------------------------- | |
| Dec 5 2003 12:38:03:180PM | 1031205002 | Steve Wukitch | 001 -002 power cycle |
| Dec 5 2003 12:38:15:697PM | 1031205003 | Steve Wukitch | 003 NTP |
| Dec 5 2003 12:52:07:600PM | 1031205004 | Steve Wukitch | 004 NTP |
| Dec 5 2003 01:14:06:587PM | 1031205005 | Steve Wukitch | 005 BT~5.4, Ip~1MA, nl_04~0.8, 1 cm gap D: 0.25, .5, .75, 1.0 MW in steps [0.6,1.5] sec E: 0.25, .5, .75, 1.0 MW in steps J: 0.5, 1.0, 1.5, 2.0 MW in steps result: plasma, H-mode, nl_04~1 D: ran faults in 1 MW step E: ran 2 faults late J: ran max faults |
| Dec 5 2003 01:35:17:447PM | 1031205007 | Steve Wukitch | 007 BT~5.4, Ip~1MA, nl_04~0.8, 1 cm gap D: 1.1 MW [0.6,1.5] sec E: 1.1 MW J: 1., 1.6 MW in steps result: plasma, H-mode, nl_04~0.9 D: ran 6 faults E: ran 7 faults J: ran max faults but better |
| Dec 5 2003 01:44:01:180PM | 1031205008 | Steve Wukitch | 008 NTP |
| Dec 5 2003 02:10:00:320PM | 1031205009 | Steve Wukitch | 009 BT~5.4, Ip~1MA, nl_04~0.8, 1 cm gap D: 1.1 MW [0.6,1.5] sec E: 1.1 MW J: 1., 1.6 MW in steps result: plasma, H-mode, nl_04~0.9 D: ran 5 faults E: ran 4 faults J: ran max faults during step to 1.6 MW |
| Dec 5 2003 02:25:56:087PM | 1031205010 | Steve Wukitch | 010 NTP |
| Dec 5 2003 02:44:15:803PM | 1031205011 | Steve Wukitch | 011 BT~5.4, Ip~1MA, nl_04~0.8, 1 cm gap D: 1.1 MW [0.6,1.5] sec E: 1.1 MW J: 1.2, 1.6 MW in steps result: plasma, H-mode, nl_04~0.9 D: ran 5 faults E: ran 4 faults J: ran max faults during step to 1.6 MW |
| Dec 5 2003 02:44:30:400PM | 1031205012 | Steve Wukitch | 012 NTP |
| Dec 5 2003 02:56:34:337PM | 1031205013 | Steve Wukitch | 013 BT~5.4, Ip~1MA, nl_04~0.8, 1 cm gap D: 1.2 MW [0.6,1.5] sec E: 1.2 MW J: 1.4, 1.8 MW in steps result: plasma, H-mode, nl_04~0.9 D: ran 2 faults E: ran J: ran 2 faults next shot: raise RF power |
| Dec 5 2003 03:13:41:460PM | 1031205014 | Steve Wukitch | 014 BT~5.4, Ip~1MA, nl_04~0.8, 1 cm gap D: 1.2 MW [0.6,1.5] sec E: 1.2 MW J: 1.4, 1.8 MW in steps result: plasma, H-mode, nl_04~0.9 - early disruption D: ran 2 faults E: ran J: ran 2 faults next shot: raise RF power |
| Dec 5 2003 03:25:10:817PM | 1031205015 | Steve Wukitch | 015 BT~5.4, Ip~1MA, nl_04~0.8, 1 cm gap D: 1.3 MW [0.6,1.5] sec E: 1.3 MW J: 1.6, 2.0 MW in steps result: plasma, H-mode, nl_04~0.9 D: ran 1 faults E: ran J: ran 3 faults |
| Dec 5 2003 03:54:14:630PM | 1031205016 | Steve Wukitch | 016 BT~5.4, Ip~1MA, nl_04~0.8, 1 cm gap D: 1.3 MW [0.6,1.5] sec E: 1.3 MW J: 1.6, 2.0 MW in steps result: plasma, H-mode, nl_04~0.9 - early disruption D: ran 1 faults E: ran 3 faults J: ran 1 fault brief 200 kJ |
| Dec 5 2003 04:04:30:330PM | 1031205017 | Steve Wukitch | 017 BT~5.4, Ip~1MA, nl_04~0.8, 1 cm gap D: 1.4 MW [0.6,1.5] sec E: 1.4 MW J: 2.0, 2.4 MW in steps result: plasma, H-mode, nl_04~0.9 - early disruption D: ran 9 faults E: ran 3 faults J: ran FMIT#3 screen overload gpc gate valve was closed |
| Dec 5 2003 04:27:25:107PM | 1031205018 | Steve Wukitch | 018 BT~5.4, Ip~1MA, nl_04~0.8, 1 cm gap D: 1.4 MW [0.6,1.5] sec E: 1.4 MW J: 2.2, 2.6 MW in steps result: plasma, H-mode, nl_04~0.9 D: ran 5 faults E: ran 5 faults J: ran max faults brief 6 MW |
| Dec 5 2003 04:34:37:880PM | 1031205019 | Steve Wukitch | 019 BT~5.4, Ip~1MA, nl_04~0.8, 1 cm gap D: 1.3 MW [0.6,1.5] sec E: 1.3 MW J: 2.2 MW result: plasma, H-mode D: ran 5 faults E: ran 1 fault J: ran 4 faults brief 207 kJ |
| Dec 5 2003 04:37:35:243PM | 1031205020 | Steve Wukitch | 20 NTP |
| Physics Operator Comments | |||
| Dec 5 2003 12:41:55:570PM | 1031205001 | Ron Parker | Shot 1 will be a cycle test. We have had a number of a number of unrelated problems this morning beginning with the Alc Serve 1 computer. This was resolved around 10, but then a problem with a cap charging power supply was discovered. This was repaired and we set up for the first plasma shot at 12:30. Around 11:00 a gas leak developed on Albany street causing us to run the alternator down as a safety measure. This turned out not to be resonsible for any delay since the power supply was still not available when the gas leak cleared. |
| Dec 5 2003 12:42:49:570PM | 1031205002 | Ron Parker | Shot 2 will test the repaired power supply |
| Dec 5 2003 12:45:49:273PM | 1031205003 | Ron Parker | Shot 3 will be a plasma shot. It turned out to be a fizzle. |
| Dec 5 2003 05:26:12:557PM | 1031205004 | Ron Parker | For shot 4, 300 A was added to OH1 bringing current back to 20000 A. Fields were better, but shot still fizzled. |
| Dec 5 2003 01:09:09:430PM | 1031205005 | Ron Parker | Shot 5 finally went. The only change was +.9 mT was added to BR(0) |
| Dec 5 2003 01:24:47:023PM | 1031205006 | Ron Parker | Shot 6 ran well, with a 2 MW RF pulse lasting 1 second and a steady EDA H-mode. |
| Dec 5 2003 01:37:30:367PM | 1031205007 | Ron Parker | The shots continue to run well without changes. |
| Dec 5 2003 02:08:53:553PM | 1031205008 | Ron Parker | Oops, Shot 8 was a fizzle. |
| Dec 5 2003 02:08:08:710PM | 1031205009 | Ron Parker | Shot 9 ran well, peak RF power close to 4 MW. |
| Dec 5 2003 02:14:06:803PM | 1031205010 | Ron Parker | Shot 10 fizzled. Every other shot mode? |
| Dec 5 2003 02:32:22:290PM | 1031205011 | Ron Parker | Shot 11 started up well, but disrupted at 0.94 sec. BZ seems to be creeping up. |
| Dec 5 2003 02:41:08:850PM | 1031205012 | Ron Parker | Shot 12 fizzled, expected after disruption. |
| Dec 5 2003 03:21:41:593PM | 1031205013 | Ron Parker | Shot 13 ran OK. |
| Dec 5 2003 03:19:56:560PM | 1031205014 | Ron Parker | Shot started up, but disrupted at 0.98 s |
| Dec 5 2003 03:23:05:140PM | 1031205015 | Ron Parker | Somewhat surprisingly, given that there was a disruption on the previous shot, the shot ran well. |
| Dec 5 2003 04:00:36:090PM | 1031205016 | Ron Parker | Shot 16 ran, but disrupted @ ~1.2 sec. |
| Dec 5 2003 04:02:18:140PM | 1031205017 | Ron Parker | Shot 17 ran well, no disruption. Rf was intermittent. On next shot the inner gap will be increased 1 cm, the outer gap will be held approximately constant. |
| Dec 5 2003 05:20:45:793PM | 1031205018 | Ron Parker | Shot 18 ran well, off the inner limiter. |
| Dec 5 2003 05:22:16:310PM | 1031205019 | Ron Parker | Shot 19 ran well. RF intermittent. |
| Dec 5 2003 04:39:21:087PM | 1031205020 | Ron Parker | Shot 20 fizzled. |
| Dec 5 2003 05:09:51:873PM | 1031205021 | Ron Parker | Shot 21 ran well. |
| Dec 5 2003 05:08:17:733PM | 1031205022 | Ron Parker | Alas, the last shot fizzled! |
| Engineering Operator Comments | ||||
| Shot | Time | Type | Status | Comment |
| 1 | 12:00:54:740PM | Test | Ok | |
| 2 | 12:23:58:523PM | Test | Ok | |
| 3 | 12:32:40:570PM | Plasma | Ok | |
| 4 | 12:50:01:913PM | Plasma | Ok | |
| 5 | 01:02:50:837PM | Plasma | Ok | |
| 6 | 01:15:37:587PM | Plasma | Ok | |
| 7 | 01:28:24:180PM | Plasma | Ok | |
| 8 | 01:41:06:163PM | Plasma | Ok | |
| 9 | 01:56:37:680PM | Plasma | Ok | |
| 10 | 02:09:06:507PM | Plasma | Ok | |
| 11 | 02:21:38:007PM | Plasma | Ok | |
| 12 | 02:35:01:430PM | Plasma | Ok | |
| 13 | 02:47:44:430PM | Plasma | Ok | |
| 14 | 03:00:23:757PM | Plasma | Ok | |
| 15 | 03:18:23:137PM | Plasma | Ok | |
| 16 | 03:37:48:720PM | Plasma | Ok | |
| 17 | 03:53:41:550PM | Plasma | Ok | |
| 18 | 04:09:20:397PM | Plasma | Ok | |
| 19 | 04:22:00:223PM | Plasma | Ok | |
| 20 | 04:35:24:913PM | Plasma | Ok | |
| 21 | 04:48:05:443PM | Plasma | Ok | |
| 22 | 05:01:14:770PM | Plasma | Ok | |