| Miniproposals | ||||||||||
|
| Operators | |
| Session leader(s): | Jim Irby |
| Physics operator(s): | Ian Hutchinson |
| Engineering operator(s): | Ed Fitzgerald,Gary Dekow,Bill Parkin |
| Engineering Operator Run Comment |
| Continuation of MP 298A; PO:Hutch; SL:Irby; EO:Dekow/Parkin/Fitzgerald |
| Session Leader Plans |
| Physics Operators Plans |
| Session Leader Summaries |
| Entered: Jul 7 2004 03:49:29:193PM |
| Author: To Be Determined |
| Run Summary for July 2, 20002: Plasma Conditioning EO: Dekow/Parkin PO: Hutch Sl: Irby We only obtained 7 plasmas today. All the plasmas were lower null discharges, though the density is uncertain because of the failure of the TCI CO2 detector. From the visible bremsstralung signal a density of 7e19/m^2 seems resonable. H/D ran 10 to 12% on all the shots. This level of hydrogen is an improvement from yesterday once the lower density is taken into account. We have to consider whether or not H/D is low enough for boronization, or if we should run one more day next Tuesday. The LPI came back into operation today and even shot multiple pellets on shot 22. Duds 10 --- PLC fault --- no gas Fizzles 02,04,06,07,09,11,12,14,15,16,17,18,19,20,22 Plasmas 01,05,08,13,21,23,24 Test 03 |
| Physics Operator Summaries |
| Entered: Jul 7 2004 04:37:15:257PM |
| Author: To Be Determined |
| Physop Summary 1020702 Start Up MP 298a More plasma conditioning. Summary _______ We had many fizzles today as we played with trying to get a better startup. By the end of the day, startup was obtained with the rcur feedback moved back to 2ms and its gain up by a factor of 2. This has the advantage of being somewhat under feedback control during the current initiation. However, the power supply responses are slow enough that it is not yet clear whether this will give a much more reliable startup. Shots 23 and 24 were two in a row good current rise with the new configuration. H/D was reliably between 10 and 15%, in plasmas that were given a constant gas puff which totalled to about 10 torr-l for a total 1.5s shot. No density measurements were available. Scorecard: _________ Shot,Duration(s),Ipmax(MA) Shot,Duration(s),Ipmax 1 1.930 0.792 2 0.000 0.031 3 0.000 0.018 4 0.000 0.037 5 1.939 0.792 6 0.000 0.042 7 0.000 0.039 8 1.914 0.786 9 0.000 0.037 10 0.000 0.019 11 0.000 0.039 12 0.000 0.034 13 1.922 0.786 14 0.000 0.039 15 0.000 0.034 16 0.000 0.044 17 0.000 0.039 18 0.000 0.042 19 0.000 0.042 20 0.000 0.044 21 1.915 0.789 22 0.000 0.039 23 1.913 0.786 24 1.924 0.789 Finished summary for 1020702 Total of 24 shots. 24 shots. 7 plasmas. 15 fizzles. 2 duds. Fizzle = gt 27.0 lt 50kA. Details: ________ Entry display output on Tue Jul 2 17:11:03 2002 ---------------------------------------------------------------------------- 1020702xxx hutch PHYSICS_OPERATOR Jul 2 2002 8:50:05:936AM . . . . . . . . . . . . . . . . . . . . Start Up MP 298a More plasma conditioning. Interferometer is not working so we are going to have to use z-meter control. However, Wolfe reports that the z-meter input to the hybrid was not working yesterday. Therefore, at least to start with, we will have to go with open-loop puff programming. Discovered that @cmod$models:[hybrid]pcs seems to leave idl in tek mode when run from ssh into spanna this might be some strangeness with my setup. Have to do set_plot,'X', before pcs. Cold start rtnode -- data loaded, A matrix responds rtnode -- data loaded, M matrix responds rtnode -- data loaded, PID matrix responds ---------------------------------------------------------------------------- 1020702xxx hutch PHYSICS_OPERATOR Jul 2 2002 9:08:38:210AM . . . . . . . . . . . . . . . . . . . . Set nl_04 gain to zero in segment 2. Go into pulse gas 3 and set to 30. This is somewhat lower than the roughly 50 value that was obtained by feedback on 1020701023, There is a bug in pcs that prevents middle button from copying into all Vs panel. ---------------------------------------------------------------------------- 1020702001 hutch PHYSICS_OPERATOR Jul 2 2002 9:34:28:696AM . . . . . . . . . . . . . . . . . . . . Plasma. Fine shot. 10 torr-l of gas puffed. RF power on j-port ramped to .6MW. Shows pickup on a lot of signals Ratiomatic, 2pi foil, H/D 10%. ---------------------------------------------------------------------------- 1020702002 hutch PHYSICS_OPERATOR Jul 2 2002 10:57:51:150AM . . . . . . . . . . . . . . . . . . . . Fizzle. EF4 to -1340 from -1350A Br offset to .002 from .0015 ---------------------------------------------------------------------------- 1020702003 hutch PHYSICS_OPERATOR Jul 2 2002 11:02:35:290AM . . . . . . . . . . . . . . . . . . . . Test pulse on pcl control We have been chasing the problem that caused the OHs to rail on shot 2. The A-out looked consistent but the Ms are totally unusual immediately after the switch to segment 2. I conclude that there is a problem with M at the segment switch. However, we have not isolated it. Load clean and then did a cold start. Try a shot. ---------------------------------------------------------------------------- 1020702004 hutch PHYSICS_OPERATOR Jul 2 2002 11:18:42:916AM . . . . . . . . . . . . . . . . . . . . Fizzle. Power supplies behaved normally. EF4 to -1330 from -1340A Load clean. ---------------------------------------------------------------------------- 1020702005 hutch PHYSICS_OPERATOR Jul 2 2002 11:33:24:303AM . . . . . . . . . . . . . . . . . . . . Plasma. 13% H/D. Pellet fired into ramp-down. Repeat ---------------------------------------------------------------------------- 1020702006 hutch PHYSICS_OPERATOR Jul 2 2002 11:52:07:770AM . . . . . . . . . . . . . . . . . . . . Fizzle. On inside, but not obvious why. OH1V to 150 @ 8ms from 200, to 150 @ 3ms from 120 Load clean 5min of ECDC. ---------------------------------------------------------------------------- 1020702007 hutch PHYSICS_OPERATOR Jul 2 2002 12:09:42:383PM . . . . . . . . . . . . . . . . . . . . Fizzle. OH1V to 190 @ 3ms from 150. 5 min ECDC. ---------------------------------------------------------------------------- 1020702008 hutch PHYSICS_OPERATOR Jul 2 2002 12:30:20:230PM . . . . . . . . . . . . . . . . . . . . Plasma. OH1V to 0V @ 0ms from -99. ---------------------------------------------------------------------------- 1020702009 hutch PHYSICS_OPERATOR Jul 2 2002 12:50:39:400PM . . . . . . . . . . . . . . . . . . . . Fizzle. EF4 to -1320 from -1330A. ---------------------------------------------------------------------------- 1020702010 hutch PHYSICS_OPERATOR Jul 2 2002 1:10:10:540PM . . . . . . . . . . . . . . . . . . . . Dud. No gas. M-out gave the signal. Valves did not respond. Repeat. ---------------------------------------------------------------------------- 1020702011 hutch PHYSICS_OPERATOR Jul 2 2002 1:29:07:770PM . . . . . . . . . . . . . . . . . . . . Plasma Move rcur feedback switches to 3ms (P) and 5ms (D) and make P=4 (was 2). ---------------------------------------------------------------------------- 1020702012 hutch PHYSICS_OPERATOR Jul 2 2002 1:49:01:626PM . . . . . . . . . . . . . . . . . . . . Fizzle. It is clear that it knew about the earlier feedback, showing that the feedback does do something. Obviously, though, there are enough offsets in rcur that we are guessing with the early feedback. Wolfe reports that the 6500 offset was chosen larger to make the Bz ramp faster. Load from shot 8 Load/clean. ---------------------------------------------------------------------------- 1020702013 hutch PHYSICS_OPERATOR Jul 2 2002 2:04:10:236PM . . . . . . . . . . . . . . . . . . . . Plasma. H/D 12%. Repeat ---------------------------------------------------------------------------- 1020702014 hutch PHYSICS_OPERATOR Jul 2 2002 2:22:33:840PM . . . . . . . . . . . . . . . . . . . . Fizzle. Moves in. Rcur offset to 2000. P gain start to 2ms. (P=2). Load. ---------------------------------------------------------------------------- 1020702015 hutch PHYSICS_OPERATOR Jul 2 2002 2:43:31:293PM . . . . . . . . . . . . . . . . . . . . Fizzle. Bounced. EF4 to -1310A from -1330 RCUR offset to 0. Load/clean ---------------------------------------------------------------------------- 1020702016 hutch PHYSICS_OPERATOR Jul 2 2002 3:02:29:476PM . . . . . . . . . . . . . . . . . . . . Fizzle. Got to nearly 50kA but with probably too little dBdt. Redraw the rcur waveform a bit more sensibly. OHV @ 7ms to 150 from 200V, to 100V at 10ms. Load. ---------------------------------------------------------------------------- 1020702017 hutch PHYSICS_OPERATOR Jul 2 2002 3:20:02:780PM . . . . . . . . . . . . . . . . . . . . Fizzle. Rdrawing the trace had much more effect that I expected. Bounced outside. rcur Offset 2800, gain to 4 (from 2). OH1V to 100 from 150 at 10ms. ---------------------------------------------------------------------------- 1020702018 hutch PHYSICS_OPERATOR Jul 2 2002 3:36:00:410PM . . . . . . . . . . . . . . . . . . . . Fizzle. D start to 7ms from 10. OH1 V to 100v from 150 at 7 and 8ms. To 150 from 200V at 5ms. ---------------------------------------------------------------------------- 1020702019 hutch PHYSICS_OPERATOR Jul 2 2002 3:53:34:290PM . . . . . . . . . . . . . . . . . . . . Fizzle. Nearly 50kA. Still bouncing on outside. Didnt get much effect from my changes. OH1V to 100V at 3 and 5ms. ---------------------------------------------------------------------------- 1020702020 hutch PHYSICS_OPERATOR Jul 2 2002 4:11:02:330PM . . . . . . . . . . . . . . . . . . . . Fizzle. Died inside. Add rcur drawn point at 1ms .68m. Load ---------------------------------------------------------------------------- 1020702021 hutch PHYSICS_OPERATOR Jul 2 2002 4:26:49:110PM . . . . . . . . . . . . . . . . . . . . Plasma. Monster bounce. Mostly lucked out. But this shows that the Bz ramp rate it still a lot too small. rcur drawn to .63 at 10ms. EF3 voltage to 2500 at 10 and 12 ms. ---------------------------------------------------------------------------- 1020702022 hutch PHYSICS_OPERATOR Jul 2 2002 4:43:55:790PM . . . . . . . . . . . . . . . . . . . . Fizzle. 40kA. Br offset to 1.5mT from 2. ---------------------------------------------------------------------------- 1020702023 hutch PHYSICS_OPERATOR Jul 2 2002 5:03:45:896PM . . . . . . . . . . . . . . . . . . . . Plasma. Bz fluctuated back up to its proper place. Repeat ---------------------------------------------------------------------------- 1020702024 hutch PHYSICS_OPERATOR Jul 2 2002 5:03:52:430PM . . . . . . . . . . . . . . . . . . . . Plasma. |
| Session Leader Comments | |||
| Jul 2 2002 09:44:35:870AM | 1020702001 | Jim Irby | Plasma H/D at 11% |
| Jul 2 2002 09:44:49:620AM | 1020702002 | Jim Irby | Fizzle |
| Jul 2 2002 11:10:49:110AM | 1020702003 | Jim Irby | OH Test at 10kA to check hybrid |
| Jul 2 2002 11:11:20:690AM | 1020702004 | Jim Irby | Plasma Attempt OHL looks okay but had a fizzle |
| Jul 2 2002 11:30:41:577AM | 1020702005 | Jim Irby | Plasma to rampdown H/D 14% and flat |
| Jul 2 2002 12:01:01:577PM | 1020702006 | Jim Irby | repeat --- see what h/d does 5 minutes ecdc before shot (2e-4 torr) fizzle |
| Jul 2 2002 12:00:33:247PM | 1020702007 | Jim Irby | 5 minutes ecdc before shot (2e-4 torr) fizzle |
| Jul 2 2002 12:24:04:413PM | 1020702008 | Jim Irby | 5 minutes ecdc plasma H/D 12% CII at .002 level |
| Jul 2 2002 12:39:57:337PM | 1020702009 | Jim Irby | Fizzle |
| Jul 2 2002 12:56:49:920PM | 1020702010 | Jim Irby | No gas ---- |
| Jul 2 2002 01:11:07:713PM | 1020702011 | Jim Irby | fizzle |
| Jul 2 2002 01:32:05:170PM | 1020702012 | Jim Irby | fizzle |
| Jul 2 2002 02:05:02:287PM | 1020702013 | Jim Irby | Reload of shot 8 Plasma h/d 11% at 1.0 s |
| Jul 2 2002 02:11:20:197PM | 1020702014 | Jim Irby | fizzle |
| Jul 2 2002 02:50:58:770PM | 1020702014 | Jim Irby | fizzle |
| Jul 2 2002 02:51:23:693PM | 1020702016 | Jim Irby | fizzle |
| Jul 2 2002 03:17:21:523PM | 1020702017 | Jim Irby | fizzle |
| Jul 2 2002 04:09:59:153PM | 1020702018 | Jim Irby | fizzle --- 45 kA |
| Jul 2 2002 04:19:22:560PM | 1020702021 | Jim Irby | plasma at last had a Li pellet 400 kW of rf from J-port h/d 10% at 1 s |
| Jul 2 2002 05:05:54:480PM | 1020702023 | Jim Irby | Plasma Earl fires 3 pellets w/o disruption h/d 10-11% |
| Jul 2 2002 05:09:13:803PM | 1020702024 | Jim Irby | Plasma H/D 12% at 1.0 |
| Physics Operator Comments | |||
| Jul 2 2002 08:50:05:937AM | Ian Hutchinson | Start Up MP 298a More plasma conditioning. Interferometer is not working so we are going to have to use z-meter control. However, Wolfe reports that the z-meter input to the hybrid was not working yesterday. Therefore, at least to start with, we will have to go with open-loop puff programming. Discovered that @cmod$models:[hybrid]pcs seems to leave idl in tek mode when run from ssh into spanna this might be some strangeness with my setup. Have to do set_plot,'X', before pcs. Cold start rtnode -- data loaded, A matrix responds rtnode -- data loaded, M matrix responds rtnode -- data loaded, PID matrix responds | |
| Jul 2 2002 09:08:38:210AM | Ian Hutchinson | Set nl_04 gain to zero in segment 2. Go into pulse gas 3 and set to 30. This is somewhat lower than the roughly 50 value that was obtained by feedback on 1020701023, There is a bug in pcs that prevents middle button from copying into all Vs panel. | |
| Jul 2 2002 09:34:28:697AM | 1020702001 | Ian Hutchinson | Plasma. Fine shot. 10 torr-l of gas puffed. RF power on j-port ramped to .6MW. Shows pickup on a lot of signals Ratiomatic, 2pi foil, H/D 10%. |
| Jul 2 2002 10:57:51:150AM | 1020702002 | Ian Hutchinson | Fizzle. EF4 to -1340 from -1350A Br offset to .002 from .0015 |
| Jul 2 2002 11:02:35:290AM | 1020702003 | Ian Hutchinson | Test pulse on pcl control We have been chasing the problem that caused the OHs to rail on shot 2. The A-out looked consistent but the Ms are totally unusual immediately after the switch to segment 2. I conclude that there is a problem with M at the segment switch. However, we have not isolated it. Load clean and then did a cold start. Try a shot. |
| Jul 2 2002 11:18:42:917AM | 1020702004 | Ian Hutchinson | Fizzle. Power supplies behaved normally. EF4 to -1330 from -1340A Load clean. |
| Jul 2 2002 11:33:24:303AM | 1020702005 | Ian Hutchinson | Plasma. 13% H/D. Pellet fired into ramp-down. Repeat |
| Jul 2 2002 11:52:07:770AM | 1020702006 | Ian Hutchinson | Fizzle. On inside, but not obvious why. OH1V to 150 @ 8ms from 200, to 150 @ 3ms from 120 Load clean 5min of ECDC. |
| Jul 2 2002 12:09:42:383PM | 1020702007 | Ian Hutchinson | Fizzle. OH1V to 190 @ 3ms from 150. 5 min ECDC. |
| Jul 2 2002 12:30:20:230PM | 1020702008 | Ian Hutchinson | Plasma. OH1V to 0V @ 0ms from -99. |
| Jul 2 2002 12:50:39:400PM | 1020702009 | Ian Hutchinson | Fizzle. EF4 to -1320 from -1330A. |
| Jul 2 2002 01:10:10:540PM | 1020702010 | Ian Hutchinson | Dud. No gas. M-out gave the signal. Valves did not respond. Repeat. |
| Jul 2 2002 01:29:07:770PM | 1020702011 | Ian Hutchinson | Plasma Move rcur feedback switches to 3ms (P) and 5ms (D) and make P=4 (was 2). |
| Jul 2 2002 01:49:01:627PM | 1020702012 | Ian Hutchinson | Fizzle. It is clear that it knew about the earlier feedback, showing that the feedback does do something. Obviously, though, there are enough offsets in rcur that we are guessing with the early feedback. Wolfe reports that the 6500 offset was chosen larger to make the Bz ramp faster. Load from shot 8 Load/clean. |
| Jul 2 2002 02:04:10:237PM | 1020702013 | Ian Hutchinson | Plasma. H/D 12%. Repeat |
| Jul 2 2002 02:22:33:840PM | 1020702014 | Ian Hutchinson | Fizzle. Moves in. Rcur offset to 2000. P gain start to 2ms. (P=2). Load. |
| Jul 2 2002 02:43:31:293PM | 1020702015 | Ian Hutchinson | Fizzle. Bounced. EF4 to -1310A from -1330 RCUR offset to 0. Load/clean |
| Jul 2 2002 03:02:29:477PM | 1020702016 | Ian Hutchinson | Fizzle. Got to nearly 50kA but with probably too little dBdt. Redraw the rcur waveform a bit more sensibly. OHV @ 7ms to 150 from 200V, to 100V at 10ms. Load. |
| Jul 2 2002 03:20:02:780PM | 1020702017 | Ian Hutchinson | Fizzle. Rdrawing the trace had much more effect that I expected. Bounced outside. rcur Offset 2800, gain to 4 (from 2). OH1V to 100 from 150 at 10ms. |
| Jul 2 2002 03:36:00:410PM | 1020702018 | Ian Hutchinson | Fizzle. D start to 7ms from 10. OH1 V to 100v from 150 at 7 and 8ms. To 150 from 200V at 5ms. |
| Jul 2 2002 03:53:34:290PM | 1020702019 | Ian Hutchinson | Fizzle. Nearly 50kA. Still bouncing on outside. Didnt get much effect from my changes. OH1V to 100V at 3 and 5ms. |
| Jul 2 2002 04:11:02:330PM | 1020702020 | Ian Hutchinson | Fizzle. Died inside. Add rcur drawn point at 1ms .68m. Load |
| Jul 2 2002 04:26:49:110PM | 1020702021 | Ian Hutchinson | Plasma. Monster bounce. Mostly lucked out. But this shows that the Bz ramp rate it still a lot too small. rcur drawn to .63 at 10ms. EF3 voltage to 2500 at 10 and 12 ms. |
| Jul 2 2002 04:43:55:790PM | 1020702022 | Ian Hutchinson | Fizzle. 40kA. Br offset to 1.5mT from 2. |
| Jul 2 2002 05:03:45:897PM | 1020702023 | Ian Hutchinson | Plasma. Bz fluctuated back up to its proper place. Repeat |
| Jul 2 2002 05:03:52:430PM | 1020702024 | Ian Hutchinson | Plasma. |
| Engineering Operator Comments | ||||
| Shot | Time | Type | Status | Comment |
| 1 | 09:19:17:133AM | Plasma | Ok | |
| 2 | 09:34:08:557AM | Plasma | Ok | |
| 3 | 10:46:33:590AM | Test | Ok | OH2U, OH2L & OH1 PS and Feedback Test |
| 4 | 11:02:39:867AM | Plasma | Ok | |
| 5 | 11:16:35:080AM | Plasma | Ok | |
| 6 | 11:31:06:500AM | Plasma | Ok | |
| 7 | 11:50:01:463AM | Plasma | Ok | |
| 8 | 12:08:19:130PM | Plasma | Ok | |
| 9 | 12:28:15:723PM | Plasma | Ok | |
| 10 | 12:47:54:453PM | Plasma | Ok | |
| 11 | 01:08:22:783PM | Plasma | Ok | |
| 12 | 01:28:11:767PM | Plasma | Ok | |
| 13 | 01:47:05:887PM | Plasma | Ok | |
| 14 | 02:04:20:050PM | Plasma | Ok | |
| 15 | 02:21:27:913PM | Plasma | Ok | |
| 16 | 02:42:16:773PM | Plasma | Ok | |
| 17 | 03:00:27:317PM | Plasma | Ok | |
| 18 | 03:18:01:010PM | Plasma | Ok | |
| 19 | 03:33:56:933PM | Plasma | Ok | |
| 20 | 03:51:19:550PM | Plasma | Ok | |
| 21 | 04:08:17:587PM | Plasma | Ok | |
| 22 | 04:25:02:873PM | Plasma | Ok | |
| 23 | 04:41:25:377PM | Plasma | Ok | |
| 24 | 04:59:17:210PM | Plasma | Ok | |