| Miniproposals | ||||||||||
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| Operators | |
| Session leader(s): | Steve Wolfe |
| Physics operator(s): | Joseph Snipes |
| Engineering operator(s): | Gary Dekow |
| Engineering Operator Run Comment |
| power system and gas system tests |
| Session Leader Plans |
| Physics Operators Plans |
| Entered: Feb 1 2005 12:48:16:877PM |
| Author: Joseph Snipes |
| Run plan for today is to do gas tests and hopefully some power tests if the computers will cooperate. |
| Session Leader Summaries |
| Entered: Feb 1 2005 07:04:48:920PM |
| Author: Steve Wolfe |
| Run summary for Tues. 2/1/2005 Gas system testing using dpcs (MP399 piggyback) SL: wolfe PO: snipes EO: Dekow, Parkin Operators : Tommy, Maria Computer jockeys: jas, twf(in absentia) >>> Gas setup: >>> fill B-Top with 6 psi D2 Hybrid DISabled (PG4) >>> fill B-side lower with 1 psi Ar Hybrid DISabled (PG1) >>> fill B-side upper with 30 psi D2 Hybrid DISabled (PG2) >>> fill (former) C-side with 30 psi D2 Hybrid DISabled (PG3) Began trying to puff gas on shot#6, after numerous problems with datasystem, some of which were in fact due to a bad interaction between dpcs:rt_action and the dispatcher. The latter problem was solved by jas changing the p_init_check script to do a dispatch/nowait instead of dispatch/wait. We were successful in putting gas through pg4 (b-top) on shots 6 and 7. Got the ratiomatic recording for shot 7 (needed to move the store sequence for edge.gas.camac:incaa01 and incaa02 from 45 to 55; may be able to put this back later. We never got the gas valve waveforms to digitize. These are/were located in crate 08 at B-C on the mezzanine, with a decoder in a different crate in an adjacent rack. Joe Bosco found that the crate with the decoder was offline, and after fixing that that the decoder had no clock. He thought he fixed that, but the digitizer (spectroscopy.pha:pha_incaa16) stillwasn't triggering. This didn't matter much because it looks like the inputs to the digitizer were not present anyway. Apparently these racks were moved during the shutdown. This situation needs to be fixed. At any rate, our first attempts to get outputs from the B-side valves B-sideMain (the former C-side) , B-side lower and B-side upper were unsuccessful. As we were on the verge of giving up, Willy Burke pointed out that the fizzle detector was preventing the valves from firing (all were programmed after .08sec) After moving the f.d. to 0.9 sec, we got a weak response from C-side, and a stronger response from B-side lower. After several exercising shots, we got what seems to be appropriate response from all the valves. Probably a little more exercising wouldn't hurt. DPCS seems to be putting out the correct demands on the fibers. This completes the first part of day 1 of the MP399. SHots of note (see logbook for more info): 7 : B-top puff - successful 8 : C-side puff - No gas 9 : B-side upper - No gas 10 : B-side lower - No gas 11 : C-side with f.d. moved late - few e-7 signal on ratiomatic 12 : B-side lower (pg1) early, C-side late - response from pg-1, somewhat late, no visible puff from C-side 13: Increase C-side voltage, bring in B-side Upper (pg2) later - see more from C-side, none from pg2 14: C-side only - 4e-4Torr this time 15: B-side upper, longer pulse - got 6e-5 |
| Physics Operator Summaries |
| Entered: Feb 1 2005 06:35:55:453PM |
| Author: Joseph Snipes |
| We managed to exercise the gas valves a few times once the fizzle detector was moved back beyond the timing for the gas puffs. All valves worked, though C-side needed a few shots to work correctly. Some data acquisition problems with the gas signals were also found that need to be resolved tomorrow. We did 7 shots, no plasmas. |
| Session Leader Comments | |||
| Feb 1 2005 03:52:27:093PM | 1050201006 | Steve Wolfe | Starting gas tests with dpcs for shot#6: Enable Btop, standard pre-puff (running with seg1 only) Had to move the sequence on gas camac incaa01 and 02 to get them to store (they didn't on shot 5). Ratiomatic is gronked (showing 10^7) We saw gas on the gauge, but no traces. Ratiomatic was off (it was on before the shot) |
| Feb 1 2005 03:57:28:813PM | 1050201006 | Steve Wolfe | Waveform traces from th evalves failed with serial crate controller error Joe B is investigating. |
| Feb 1 2005 04:52:36:343PM | 1050201007 | Steve Wolfe | Shot7: Repeat B-top, hopefully with data from the valves and ratiomatic Got gas. Ratiomatic worked. Shows 1.5e-5 at the right time. Gas valve signals still missing. Joe and Yuri thought they had the crate back online. |
| Feb 1 2005 05:00:43:220PM | 1050201008 | Steve Wolfe | Shot8: Enable the B-sideMain (former C-side) valve The valve signals are not connected to the digitizer, and the decoder clock fiber is not connected. Those signals are not going to happen today. No gas from the pg3. No way to tell why, since we don't have the gas valve signals. There is a pulse in the interface room, over 100msec worth, and I saw the HV enable come on. So the main gas isn't working for now. Could be the connection, or Willy's driver board, or the fiber from the interface room. No way to tell. |
| Feb 1 2005 05:13:43:577PM | 1050201009 | Steve Wolfe | Shot9: Enable B-side upper (pg2)
Joe thinks the decoder is now clocking again No gas on the gauge. No signal on ratiomatic. Still no trigger on the pha_incaa Move on to B-side lower |
| Feb 1 2005 05:19:16:937PM | 1050201010 | Steve Wolfe | Shot10: Move on to B-side lower (100ms puff) No gas. So we are 1 for 4 on gas valves. |
| Feb 1 2005 06:02:34:047PM | 1050201011 | Steve Wolfe | Shot11: Willy points out that the fizzle detector will inhibit the gas. Move f.d. to 0.9sec and try again on C_side gas on the gage, Very small gas rise, though, only a few 10-7 next shot: move pg1 (b-side lower) to -.4 sec and leave pg3 on. |
| Feb 1 2005 06:11:27:500PM | 1050201012 | Steve Wolfe | Shot12: move pg1 (b-side lower) to -.4 sec and leave pg3 on. Lots of gas this time, Starts at -.17 gets to 1.6e-5 No sign of the gas from pg3? Next shot: B-side upper at .5sec (pg2), c-side at 100V at .026sec |
| Feb 1 2005 06:18:50:150PM | 1050201013 | Steve Wolfe | Shot13: B-side upper at .45sec (pg2), c-side at 100V at .026sec got gas, rises at about 0.2sec . No second puff at .45. |
| Feb 1 2005 06:21:05:950PM | 1050201013 | Steve Wolfe | Shot13: B-side upper at .45sec (pg2), c-side at 100V at .026sec got gas, rises at about 0.2sec . No second puff at .45. next shot: c-side only |
| Feb 1 2005 06:27:31:007PM | 1050201014 | Steve Wolfe | Shot14: c-side only got 4e-4 on the big board gauge, that's more like it! Still has some delay, starts to rise at .09 on pulse that starts at .026 Next shot: B-side upper for 150msec |
| Feb 1 2005 06:33:09:047PM | 1050201015 | Steve Wolfe | Shot15:B-side upper for 150msec starting 0.35sec gas shows up at 0.4sec, gets to 6e-5 Looks like the valves just needed exercising. RUN DONE |
| Physics Operator Comments | |||
| Feb 1 2005 03:30:43:767PM | 1050201006 | Joseph Snipes | Shot 6: Setup pulse_gas 1 with 100 V from 0.25 to 0.3 s and pulse_gas 2 with 100 V from 0.45 to 0.5 s. |
| Feb 1 2005 04:31:21:017PM | 1050201007 | Joseph Snipes | Shot 7: Repeat with B top enabled again. |
| Feb 1 2005 04:53:15:767PM | 1050201008 | Joseph Snipes | Shot 8: Repeat with B top disabled and C-side enabled. |
| Feb 1 2005 04:58:53:483PM | 1050201008 | Joseph Snipes | Shot 8: Repeat with B top disabled and C-side enabled. No gas visible in the machine. |
| Feb 1 2005 05:07:34:580PM | 1050201009 | Joseph Snipes | Shot 9: Repeat with B side upper only enabled. No gas visible in the machine. |
| Feb 1 2005 05:15:44:140PM | 1050201010 | Joseph Snipes | Shot 10: Repeat with B side lower only enabled. No gas visible in the machine. |
| Feb 1 2005 05:55:22:127PM | 1050201011 | Joseph Snipes | Shot 11: Repeat with C side only enabled and with the fizzle detector set to 0.9 s. No gas visible in the machine. Got gas. Apparently, the fizzle detector was the problem. |
| Feb 1 2005 06:12:48:127PM | 1050201012 | Joseph Snipes | Shot 12: Moved pulse gas 1 (B side lower) to -0.4 s at 100 V until -0.2 s. Enabled C-side and B-side lower. Gas comes up at -0.179 s perhaps B side lower was delayed for some reason. |
| Feb 1 2005 06:17:28:837PM | 1050201013 | Joseph Snipes | Shot 13: Increased C-side voltage to 100 V for about 0.1 s from 0.026 sec to 0.128 s. Enabled C-side and B-side upper. Got gas but it begins to rise at about 0.16 s, which is not at the right time for either valve. |
| Feb 1 2005 06:28:06:410PM | 1050201014 | Joseph Snipes | Shot 14: Enabled only C-side. Got a lot of gas. Timing looks about 75 ms late. |
| Feb 1 2005 06:32:47:703PM | 1050201015 | Joseph Snipes | Shot 15: B-side upper enabled only. Set its pulse to 150 ms duration from 0.35 to 0.5 s. Got gas. Timing is a bit delayed but about right starting around 0.4 s. |
| Engineering Operator Comments | ||||
| Shot | Time | Type | Status | Comment |
| 1 | 01:31:01:940PM | Test | Bad | |
| 2 | 02:10:41:390PM | Test | Bad | dpcs hung |
| 3 | 02:48:04:127PM | Test | Bad | |
| 4 | 03:11:29:140PM | Test | Ok | |
| 5 | 03:18:09:470PM | Test | Ok | |
| 6 | 03:42:27:063PM | Test | Ok | puffed gas with dpcs |
| 7 | 04:30:56:907PM | Test | Ok | |
| 8 | 04:56:10:547PM | Test | Ok | |
| 9 | 05:05:20:123PM | Test | Ok | |
| 10 | 05:14:06:797PM | Test | Ok | |
| 11 | 05:53:42:140PM | Test | Ok | |
| 12 | 06:03:05:030PM | Test | Ok | |
| 13 | 06:12:31:813PM | Test | Ok | |
| 14 | 06:22:12:990PM | Test | Ok | |
| 15 | 06:29:26:520PM | Test | Ok | |