| Miniproposals | ||||||||||
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| Operators | |
| Session leader(s): | Unknown |
| Physics operator(s): | Robert Granetz,Jim Irby |
| Engineering operator(s): | Gary Dekow,Bill Parkin,Ed Fitzgerald |
| Engineering Operator Run Comment |
| Plasma startup and conditioning PO: Granetz EO: Dekow/Fitz/Parkin |
| Session Leader Plans |
| Physics Operators Plans |
| Session Leader Summaries |
| Physics Operator Summaries |
| Entered: Jul 7 2004 04:37:19:363PM |
| Author: Jim Irby |
| Physics operator summary for run 1031017 (Friday): Purpose: Plasma startup and conditioning Session leader: -- Physics operator: R. Granetz (J. Irby for last hour) Engineers in charge: G. Dekow, E. Fitzgerald, W. Parkin Summary: The run started off really well, with 100% startup reliability for the first 11 shots, including 3 upper x-pt plasmas. But then the startup reliability nose-dived. We eventually changed back to lower x-pt, but things still didn't improve until late in the day, when we eventually settled into alternating fizzles and plasmas. The RF was able to get 2+ MW out of D+E on a number of shots, and good electron heating was seen, particularly on the last shot (032). However, there were no H-modes. The H/D varied between 0.08 (before RF) to 0.12 (during RF). It didn't seem to degrade much during the day. The RGA, however, was showing lots of medium-high q/m lines (boron compounds?). Shots 04 and 05 had problems with the magnetics CPCI DAQ, which were finally eliminated by rebooting the PC. Scorecard: 17 plasmas 8 fizzles 7 duds 0 tests or no-power shot cycles 0 aborted and/or screwed up by computer problems ---------- 32 total ------------------------------------------------------------------------------- Engineering setup for Friday, 17 Oct 2003 Purpose: Plasma startup and conditioning Session leader: -- Physics operator: R. Granetz (J. Irby will take over for the last hour) Engineering operator: ECDC overnight in D2 at 2e-4 Torr, stopping by 07:00. Bake at 60 C overnight as well. Run begins at 09:00 and ends at 17:00. Power systems the same as on 1031016029 (0.8 MA, 5.4 T, lower single null) 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: Transmitters 1 and 2 in RUN ON by 08:00 am ------------------------------------------------------------------------------- Run Plan: We'll continue running boring cleanup plasmas while monitoring H/D, etc. RF Group will continue conditioning D & E. ------------------------------------------------------------------------------- ECDC was done overnight, as well as a 60 C bake. Hybrid coldstart done by the engineering group; no errors found Loaded PCS from shot 1031016033 (0.8 MA, 5.4 T, nl_04=1.0e20 m-2, single null lower), EXCEPT increase IC_EF4 to -1300 amps (from -1340) ------------------------------------------------------------------------------- Shot 01 -- Plasma. Good shot. Ip=0.8 MA. Btor=5.4 T. nl_04=0.9e20 m-2. No RF. H/D=0.06. Next shot: reduce pre-fill by 2 ms. Reduce pre-programmed gas after t=1.0 s. Shot 02 -- Plasma. Good shot. Still only making it halfway down the rampdown because the density won't fall. Prf=1.4 MW (D+E). H/D=0.08. Next shot: no changes. Shot 03 -- Plasma. Good shot. The weird early marfe thing appeared on this shot at 0.5 s and disappeared around 0.9 s. Prf=1.0 MW. H/D=0.10-0.12. This equilibrium happens to have a small inner gap and a large outer gap. Next shot: increase CLEARIN by 5 mm and RCUR by 5 mm. Shot 04 -- Plasma. Good shot, I think. Most (if not all) of the magnetics CPCI data did not get stored. Josh is seeing if it can be recovered. Prf=1.4 MW. H/D=0.09-0.12. Josh was able to recover the magnetics data. Steve is redoing EFIT. Both inner and outer gaps are now 1.5 cm. No early marfe. The elongation is still a little on the low side. Next shot: reduce ZXU by 1 cm (should be upper x-pt closer in to plasma, which should increase the upper elongation) Shot 05 -- Plasma. Good shot. Magnetics CPCI_05 failed. I tried to recover the data, but it failed. EFIT therefore got garbage. Prf=1.5 MW. Josh rebooted the magnetics CPCI system. Next shot: no changes Shot 06 -- Plasma. Good shot. All the magnetics DAQ worked. We're still only getting halfway down the ramp. Prf=1.5 MW (D+E). No H-modes. Note: RF data was bad for this shot. (It's actually the data from shot 5.) H/D=0.1 Next shot: reduce ZXU by another 1 cm. Shot 07 -- Plasma. Good shot. Prf=1.5 MW. H/D=0.1 Still no H-modes. Next shot: add 10 ms to argon puff at John's request. Shot 08 -- Plasma. Good shot. Still only gets halfway down the ramp. Prf=1.7 MW. H/D=0.08-0.11. No H-modes. Next shot: switch to upper null plasmas. Load segment 2 from segment 2 of shot 1031010023, except reload nl_04 from the preceding shot of today. Shot 09 -- Plasma. Good upper null shot. Ramped all the way down. Prf=1.8 MW. H/D=0.08-0.1+ Next shot: no changes Shot 10 -- Plasma. Good upper null shot. Prf=1-2 MW. H/D=0.09-0.11 Next shot: no changes Shot 11 -- Plasma. Good upper null shot. Prf=1-2 MW (D+E) H/D=0.10-0.12 Next shot: increase argon puff to 40 ms (It was reset to 25 ms when I loaded the upper null programming.) Shot 12 -- Fizzle. Fields and pressure look fine. Next shot: reduce pre-fill by 2 ms Shot 13 -- Dud. Next shot: increase pre-fill by 3 ms Shot 14 -- Plasma. Hard disruption at t=1.115 s. EFC has some oscillations on it and then rails. Definitely not caused by an injection. Next shot: move ZXU down by 1 cm to decrease elongation. Shot 15 -- Fizzle. Next shot: no PCS changes. DNB will begin firing into plasma. RF start time moved to t=0.6 s on previous shot. Shot 16 -- Dud. Next shot: add 2 ms to pre-fill. Shot 17 -- Dud. Next shot: reload segment 1 from shot 11 earlier today. Shot 18 -- Plasma. Good upper X-pt shot. Full rampdown. Strong marfe is back during the first half of the discharge. Prf=2.0 MW. H/D goes up to 0.2 Both gaps are 17 mm. The DNB is firing at t=0.9 s (gate valve opens before t=0). Next shot: no changes Shot 19 -- Fizzle. Next shot: no changes Shot 20 -- Fizzle. Next shot: add +10 amps to IC_EF4 (change -1300 to -1290 A) Shot 21 -- Dud. ECDC for 10 minutes between shots. Shot 22 -- Dud. Looks like the ECDC didn't help. Next shot: add -20 A to IC_EF4 (change -1290 to -1310 A), AND switch back to normal lower null equilibrium by reloading segment 2 from shot 8 earlier today. Shot 23 -- Plasma. Good shot...just like the earlier lower x-pt shots of this morning. H/D=0.08-0.11. Prf=1-2 MW. Next shot: no changes. Let's see if the lower null does better than the upper null. Shot 24 -- Fizzle. Next shot: reload all segments of shot 8 from earlier today. Shot 25 -- Dud. ECDC for 5 minutes between shots. Shot 26 -- Dud. Next shot: no more useful ideas left. Fields are identical to those from the first part of today's operation. So is the pre-fill. Okay, so let's do something. Increase pre-fill by 6 ms. Shot 27 -- Fizzle. I guess that's progress. Next shot: another pre-fill gas tweak. Shot 28 -- Plasma! Plasma Plasma Plasma Plasma. Good shot. Prf=2.3 MW. Next shot: no changes. It's 16:00. I'm leaving to go to the seminar. Jim Irby will look after things for the last hour in my absence. Shot 29 -- Fizzle. Next shot: no changes Shot 30 -- Plasma. Good shot. Prf=1.0-2.3 MW. H/D=0.08-0.11. No H-modes. Next shot: no changes Shot 31 -- Fizzle. Next shot: no changes Shot 32 -- Plasma. Prf=2.3 MW. Good heating is seen on the ECE. H/D=0.08-0.12. No H-modes. End of run. |
| Session Leader Comments |
| Physics Operator Comments | |||
| Oct 16 2003 05:07:56:457PM | Robert Granetz | Engineering setup for Friday, 17 Oct 2003 Purpose: Plasma startup and conditioning Session leader: -- Physics operator: R. Granetz (J. Irby will take over for the last hour) Engineering operator: ECDC overnight in D2 at 2e-4 Torr, stopping by 07:00. Bake at 60 C overnight as well. Run begins at 09:00 and ends at 17:00. Power systems the same as on 1031016029 (0.8 MA, 5.4 T, lower single null) 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: Transmitters 1 and 2 in RUN ON by 08:00 am ------------------------------------------------------------------------------- Run Plan: We'll continue running boring cleanup plasmas while monitoring H/D, etc. RF Group will continue conditioning D & E. ------------------------------------------------------------------------------- | |
| Oct 17 2003 08:17:34:870AM | Robert Granetz | ECDC was done overnight, as well as a 60 C bake. Hybrid coldstart done by the engineering group; no errors found Loaded PCS from shot 1031016033 (0.8 MA, 5.4 T, nl_04=1.0e20 m-2, single null lower), EXCEPT increase IC_EF4 to -1300 amps (from -1340) | |
| Oct 17 2003 09:07:45:877AM | 1031017001 | Robert Granetz | Shot 01 -- Plasma. Good shot. Ip=0.8 MA. Btor=5.4 T. nl_04=0.9e20 m-2. No RF. H/D=0.06. Next shot: reduce pre-fill by 2 ms. Reduce pre-programmed gas after t=1.0 s. |
| Oct 17 2003 09:17:54:523AM | 1031017002 | Robert Granetz | Shot 02 -- Plasma. Good shot. Still only making it halfway down the rampdown because the density won't fall. Prf=1.4 MW (D+E). H/D=0.08. Next shot: no changes. |
| Oct 17 2003 09:38:45:227AM | 1031017003 | Robert Granetz | Shot 03 -- Plasma. Good shot. The weird early marfe thing appeared on this shot at 0.5 s and disappeared around 0.9 s. Prf=1.0 MW. H/D=0.10-0.12. This equilibrium happens to have a small inner gap and a large outer gap. Next shot: increase CLEARIN by 5 mm and RCUR by 5 mm. |
| Oct 17 2003 09:55:54:350AM | 1031017004 | Robert Granetz | Shot 04 -- Plasma. Good shot, I think. Most (if not all) of the magnetics CPCI data did not get stored. Josh is seeing if it can be recovered. Prf=1.4 MW. H/D=0.09-0.12. Josh was able to recover the magnetics data. Steve is redoing EFIT. Both inner and outer gaps are now 1.5 cm. No early marfe. The elongation is still a little on the low side. Next shot: reduce ZXU by 1 cm (should be upper x-pt closer in to plasma, which should increase the upper elongation) |
| Oct 17 2003 10:28:27:577AM | 1031017005 | Robert Granetz | Shot 05 -- Plasma. Good shot. Magnetics CPCI_05 failed. I tried to recover the data, but it failed. EFIT therefore got garbage. Prf=1.5 MW. Josh rebooted the magnetics CPCI system. Next shot: no changes |
| Oct 17 2003 10:44:20:247AM | 1031017006 | Robert Granetz | Shot 06 -- Plasma. Good shot. All the magnetics DAQ worked. We're still only getting halfway down the ramp. Prf=1.5 MW (D+E). No H-modes. Note: RF data was bad for this shot. (It's actually the data from shot 5.) H/D=0.1 Next shot: reduce ZXU by another 1 cm. |
| Oct 17 2003 11:14:13:800AM | 1031017007 | Robert Granetz | Shot 07 -- Plasma. Good shot. Prf=1.5 MW. H/D=0.1 Still no H-modes. Next shot: add 10 ms to argon puff at John's request. |
| Oct 17 2003 11:13:53:580AM | 1031017008 | Robert Granetz | Shot 08 -- Plasma. Good shot. Still only gets halfway down the ramp. Prf=1.7 MW. H/D=0.08-0.11. No H-modes. Next shot: switch to upper null plasmas. Load segment 2 from segment 2 of shot 1031010023, except reload nl_04 from the preceding shot of today. |
| Oct 17 2003 11:34:36:080AM | 1031017009 | Robert Granetz | Shot 09 -- Plasma. Good upper null shot. Ramped all the way down. Prf=1.8 MW. H/D=0.08-0.1+ Next shot: no changes |
| Oct 17 2003 11:43:08:027AM | 1031017010 | Robert Granetz | Shot 10 -- Plasma. Good upper null shot. Prf=1-2 MW. H/D=0.09-0.11 Next shot: no changes |
| Oct 17 2003 11:58:55:943AM | 1031017011 | Robert Granetz | Shot 11 -- Plasma. Good upper null shot. Prf=1-2 MW (D+E) H/D=0.10-0.12 Next shot: increase argon puff to 40 ms (It was reset to 25 ms when I loaded the upper null programming.) |
| Oct 17 2003 12:08:25:827PM | 1031017012 | Robert Granetz | Shot 12 -- Fizzle. Fields and pressure look fine. Next shot: reduce pre-fill by 2 ms |
| Oct 17 2003 12:25:50:527PM | 1031017013 | Robert Granetz | Shot 13 -- Dud. Next shot: increase pre-fill by 3 ms |
| Oct 17 2003 12:37:34:490PM | 1031017014 | Robert Granetz | Shot 14 -- Plasma. Hard disruption at t=1.115 s. EFC has some oscillations on it and then rails. Definitely not caused by an injection. Next shot: move ZXU down by 1 cm to decrease elongation. |
| Oct 17 2003 12:46:58:217PM | 1031017015 | Robert Granetz | Shot 15 -- Fizzle. Next shot: no PCS changes. DNB will begin firing into plasma. RF start time moved to t=0.6 s on previous shot. |
| Oct 17 2003 12:58:24:740PM | 1031017016 | Robert Granetz | Shot 16 -- Dud. Next shot: add 2 ms to pre-fill. |
| Oct 17 2003 01:23:15:667PM | 1031017017 | Robert Granetz | Shot 17 -- Dud. Next shot: reload segment 1 from shot 11 earlier today. |
| Oct 17 2003 01:33:12:000PM | 1031017018 | Robert Granetz | Shot 18 -- Plasma. Good upper X-pt shot. Full rampdown. Strong marfe is back during the first half of the discharge. Prf=2.0 MW. H/D goes up to 0.2 Both gaps are 17 mm. The DNB is firing at t=0.9 s (gate valve opens before t=0). Next shot: no changes |
| Oct 17 2003 01:40:39:617PM | 1031017019 | Robert Granetz | Shot 19 -- Fizzle. Next shot: no changes |
| Oct 17 2003 01:56:47:847PM | 1031017020 | Robert Granetz | Shot 20 -- Fizzle. Next shot: add +10 amps to IC_EF4 (change -1300 to -1290 A) |
| Oct 17 2003 02:13:04:187PM | 1031017021 | Robert Granetz | Shot 21 -- Dud. ECDC for 10 minutes between shots. |
| Oct 17 2003 02:32:18:157PM | 1031017022 | Robert Granetz | Shot 22 -- Dud. Looks like the ECDC didn't help. Next shot: add -20 A to IC_EF4 (change -1290 to -1310 A), AND switch back to normal lower null equilibrium by reloading segment 2 from shot 8 earlier today. |
| Oct 17 2003 02:50:42:420PM | 1031017023 | Robert Granetz | Shot 23 -- Plasma. Good shot...just like the earlier lower x-pt shots of this morning. H/D=0.08-0.11. Prf=1-2 MW. Next shot: no changes. Let's see if the lower null does better than the upper null. |
| Oct 17 2003 03:05:13:150PM | 1031017024 | Robert Granetz | Shot 24 -- Fizzle. Next shot: reload all segments of shot 8 from earlier today. |
| Oct 17 2003 03:17:25:783PM | 1031017025 | Robert Granetz | Shot 25 -- Dud. ECDC for 5 minutes between shots. |
| Oct 17 2003 03:35:52:203PM | 1031017026 | Robert Granetz | Shot 26 -- Dud. Next shot: no more useful ideas left. Fields are identical to those from the first part of today's operation. So is the pre-fill. Okay, so let's do something. Increase pre-fill by 6 ms. |
| Oct 17 2003 03:41:49:367PM | 1031017027 | Robert Granetz | Shot 27 -- Fizzle. I guess that's progress. Next shot: another pre-fill gas tweak. |
| Oct 17 2003 03:57:49:050PM | 1031017028 | Robert Granetz | Shot 28 -- Plasma! Plasma Plasma Plasma Plasma. Good shot. Prf=2.3 MW. Next shot: no changes. It's 16:00. I'm leaving to go to the seminar. Jim Irby will look after things for the last hour in my absence. |
| Oct 17 2003 04:17:39:450PM | 1031017029 | Jim Irby | No PCS changes fizzle --- I'm off to a good start fields look good as does gas |
| Oct 17 2003 04:38:26:690PM | 1031017030 | Jim Irby | No PCS changes again Pressure will be about 1e-6 vs 2e-6, but doubt it matters Plasma for 1.65 s --- doing nothing worked About 2.3 MW from D&E H/(H+D) at 0.8 s is 7.5% --- better than the last couple of days |
| Oct 17 2003 04:56:28:497PM | 1031017031 | Jim Irby | No PCS changes fizzle --- no good reason except the last shot produced a plasma |
| Oct 17 2003 05:04:34:447PM | 1031017032 | Jim Irby | No PCS changes plasma 2.3 MW rf, 63 kJ H/(H+D) at 0.8 s 8.5% all done |
| Engineering Operator Comments | ||||
| Shot | Time | Type | Status | Comment |
| 1 | 08:55:07:787AM | Plasma | Ok | |
| 2 | 09:08:22:690AM | Plasma | Ok | |
| 3 | 09:21:34:340AM | Plasma | Ok | |
| 4 | 09:38:54:633AM | Plasma | Ok | |
| 5 | 09:56:44:147AM | Plasma | Ok | |
| 6 | 10:28:04:810AM | Plasma | Ok | |
| 7 | 10:45:31:153AM | Plasma | Ok | |
| 8 | 10:59:47:337AM | Plasma | Ok | |
| 9 | 11:15:45:457AM | Plasma | Ok | |
| 10 | 11:33:36:957AM | Plasma | Ok | |
| 11 | 11:48:06:437AM | Plasma | Ok | |
| 12 | 12:01:19:210PM | Plasma | Ok | |
| 13 | 12:14:43:330PM | Plasma | Ok | |
| 14 | 12:27:54:827PM | Plasma | Ok | |
| 15 | 12:41:23:680PM | Plasma | Ok | |
| 16 | 12:54:28:957PM | Plasma | Ok | |
| 17 | 01:08:15:670PM | Plasma | Ok | |
| 18 | 01:21:32:320PM | Plasma | Ok | |
| 19 | 01:35:33:173PM | Plasma | Ok | |
| 20 | 01:49:09:933PM | Plasma | Ok | |
| 21 | 02:02:22:820PM | Plasma | Ok | |
| 22 | 02:25:38:870PM | Plasma | Ok | |
| 23 | 02:39:06:567PM | Plasma | Ok | |
| 24 | 02:54:50:830PM | Plasma | Ok | |
| 25 | 03:09:01:010PM | Plasma | Ok | |
| 26 | 03:24:30:337PM | Plasma | Ok | |
| 27 | 03:37:53:127PM | Plasma | Ok | |
| 28 | 03:51:15:513PM | Plasma | Ok | |
| 29 | 04:04:47:680PM | Plasma | Ok | |
| 30 | 04:18:16:603PM | Plasma | Ok | |
| 31 | 04:40:26:033PM | Plasma | Ok | |
| 32 | 04:53:46:513PM | Plasma | Ok | |