| Miniproposals | ||||||||||
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| Operators | |
| Session leader(s): | Steve Wukitch,Steve Wukitch |
| Physics operator(s): | Dmitri Mossessian |
| Engineering operator(s): | Frank Silva |
| Engineering Operator Run Comment |
| MP214,MP208/Mossessian/Silva |
| Session Leader Plans |
| Physics Operators Plans |
| Session Leader Summaries |
| Entered: Jul 7 2004 03:49:20:210PM |
| Author: To Be Determined |
| Run Plan for 990421 ICRF Conditioning Engineering Setup for Thursday, 990422 ICRF Conditioning Load from 990421011 The run will not start until 9:00 am in order to allow 1 hour for ICRF maintenance. 1.5 hours of ECDC in D2 Vacuum conditioned D and E-port antennas to ~40 kV last night. Gas setup - fill B-top with 6 psi of D2 Hybrid enabled fill B-side lower with 1 psi of Ar Hybrid enabled fill B-side upper with 6 psi of H2 Hybrid DISABLED fill C-side with 30 psi of D2 Hybrid enabled fill J-bottom with 30 psi of D2 Hybrid enabled The following gate valves should be enabled, assuming no vacuum problems: ECE, VUV ------------------------------------------------------------------------------- Run Plan for 990422 MP 214: ICRF conditioning We will use J-bottom gas valve for the main D2 gas after 0.1 sec into the discharge to test if this affects antenna performance. Start J-port antenna conditioning MW_coefficient from Monday D: [-1.30896,.273598,-2.19695] 001 OH plasma 002 OH plasma next shot: begin with FMIT#1 at 1 MW 0.7-1.2 MW 003 disruption at 1.11 sec 1 MW from D next shot: repeat (minus the disruption) increase D power by 25% 004 plasma no increase in power due to bira error next shot: raise density by 20% 005 plasma H-mode next shot: energize E-port both antennas are programmed for 1.25 MW 006 plasma faults 007 early disruption 008 plasma ramp on E-port 009 plasma ramp on E-port 010 fizzle New MW_coefficients for E-port: [-0.82743410,0.36800525,-2.1122408] Realized E-port bira channel was off 010 fizzle 011 plasma E-port crowbar early 012 plasma 1.25 MW each with #1 faulting 013 plasma no fast gas - very low density next shot: repeat with some gas this time 014 fizzle walls had been unloaded - insufficient gas 015 plasma 1 MW each with 3 faults late on D next shot: repeat with increased RF power 016 plasma low density again because there was no gas after 0.1 j-bottom failed next shot: change gas feedback to C-side 017 fizzle 018 plasma no D-port - HV was off without notice! next shot: repeat with D-port on 019 plasma high density 2.7 MW with some faulting on D next shot: repeat with lower density 020 plasma 2.7 MW with increased faulting on D next shot: raise current to 1 MA 021 plasma Ip -> 1.0 MA only one trip two H->L EN-modes 022 plasma D-port overloaded next shot: increase outer gap ramp D-port 023 plasma D-port faults early and stays off new MW coefficients: D-port [-1.3140284,0.13618177,-2.1404101], but these numbers are not terribly different from present coefficients. There appears to be a saturation of power above 1.2 MW. Perhaps there is a mismatch problem. 024 plasma single fault The tuning appears to be a subtle problem. We oscillate between two solutions on E-port and often have diffuse clouds of points on D-port. We really need to look into the tuning program to make sure we are arriving at the correct solutions. 025 plasma voltage limit faults ******************* *** Run Summary *** ******************* Antenna performance improved compared to yesterday. High power discharges were obtained with fewer faults. The best discharges were obtained in 1 MA discharges. The reason for the improvement is not clear, but there are plenty of possibilities. Further analysis of signals may reveal what is important and what is not. The location of the gas puffing does not appear to be the major reason for the faulting on D-port. The antenna condition appears to be improving with more run time. Many H->L induced EN-modes were observed in the 1 MA discharges. Most did not survive the first sawtooth crash. J-port conditioning continued into vacuum. The major obsticles are vacuum conditioning, phase between transmitters, attenuation for DC2, arc and voltage protection system, and DC1 calibration. Given the present schedule, J-port is likely to be operating into plasmas starting next Tuesday. FMIT#2 was having crowbars at 600 kW to about 800 kW for 0.5 sec pulses. The symptom is noise appearing on all tube anode voltages. Retuning is necessary, but for now avoid the 600-800 kW window for 0.5 sec. FMIT#1 had HV faults between shots that is a result of a bad door switch on the driver cabinet (screen ps). Test# Bira3 [kW] [kV] Bira4 [kW] [kV] 670 1.2-1.3 1.7-1.8 - xmtrs were in manual mode 673 1.2-1.3 1.7-1.8 - no power reported on DC1 or DC2 675 1.2-1.3 1.7-1.8 large gas puff equal power reflected as forward 676 1.2-1.3 1.7-1.8 equal power reflected as forward no antenna data 677 1.2-1.3 1.7-1.8 40 16.5 less of a gas puff #4's match is good still have multipacking on #3 678 1.2-1.3 1.7-1.8 40 16.5 679 repeat 680 repeat increase pulse length to 0.4 sec 681 684 1.2-1.3 40 1.7-2.6 688 1.2-1.3 40 2.3-2.6 689 690 1.6-1.7 3.0-3.2 691 692-702 |
| Physics Operator Summaries |
| Entered: Jul 7 2004 04:37:00:973PM |
| Author: To Be Determined |
| #25 of 34 OPS Date: 22-APR-1999 17:44 Expires: 6-MAY-1999 00:00 From: SPANNA::MOSSESSIAN Subj: Physop summary for 990422 Physics operator summary for run 990422. SL: Wukitch PO: Mossessian EO: Silva Run in support of MP 214: ICRF conditioning and MP# 208 Plume imaging ... The start of the run was delayed because of the RF problem. We started at 10 am and had 2 ohmic shots. There was a problem with PCS coldstart - after running HYBRID_DISPATCH the log file had a "RTNODE -- A MATRIX PRIVATE BUS NOT RESPONDING!" line in it. HBRID_DISPATCH was run second time without changing anything and succeded. First shot was loaded from 990421011 J-bottom valve was used for fueling. After it had two faults the fueling was switched back to C-side valve. Summary: 25 shots 3 fizzles 22 plasmas 990422001 RF OFF. Good shot. 990422002 RF OFF. Reduced target density to 1e20. 990422003 RF 1MW. L-mode. Disrupted around 1.1 sec because of an injection. 990422004 RF 1MW. L-mode 990422005 RF 1MW. L-mode. Increased target density to 1.2e20. 990422006 RF 3MW. 2 H_modes. Increased J-bottom puff between .24 and .54 sec 990422007 Add gas puff in J-bottom between .1 and .2 sec. Disruption at .35. 990422008 RF 2.5MW. 2 H-modes. Add gas puff in J-bottom between .1 and .2 sec 990422009 RF up to 3 MW. H-mode. Moved ZCUR 5 mm up for better edge TS coverage. 990422010 Fizzle. Changed Br offset to 0 from 2 mT in segment 1 for next shot 990422011 RF 3MW to 1MW. H-mode. 990422012 RF 2MW. 2 H-modes. 990422013 No gas in J-bottom. nl04=3.8e19. Multiple H-modes 990422014 Fizzle. Increase prepuff to 20 msec for next shot 990422015 RF 2MW. Multiple H-modes. For next shot bring prepuff back to 18 msec 990422016 No gas on J-bottom. nl04= 4.4e19. Multiple H-modes.Switch gas to C-side. Hybrid disable J-bottom. Set prepuff to 20 msec. 990422017 Fizzle. No PCS change for next shot. 990422018 No RF. PLasma 990422019 Unusual high density shot - nl04= 2e20 (asking for 1.2e20). RF 2.5MW. 2 H-modes. Reduce prepuff to 18 msec. and add .5 mT offset to Br in segment 1 for next shot 990422020 Lowered the density by lowering the voltage in pulse_gas3 (C-side). RF 2.5MW. H-mode nl04=1.3e20. 990422021 Increased current to 1MA. RF 2.5MW. 3 H-modes 990422022 RF 2.5MW to 1MW. 3 H-modes 990422023 Decreased Rcur to increase outer gap by 1 cm. RF 1.5MW. H-mode 990422024 Lowered ZXL by 1 cm. RF 2MW. 3 H-modes 990422025 Lowered ZXL by 1 cm. RF 2MW. 5 H-modes |
| Session Leader Comments | |||
| Apr 22 1999 09:45:59:623AM | 990422001 | Steve Wukitch | 001 OH plasma |
| Apr 22 1999 10:08:57:797AM | 990422002 | Steve Wukitch | 002 OH plasma next shot: begin with FMIT#1 at 1 MW 0.7-1.2 MW |
| Apr 22 1999 10:38:12:607AM | 990422003 | Steve Wukitch | 003 disruption at 1.11 sec 1 MW from D next shot: repeat (minus the disruption) increase D power by 25% |
| Apr 22 1999 11:10:17:717AM | 990422004 | Steve Wukitch | 004 plasma no increase in power due to bira error next shot: raise density by 20% |
| Apr 22 1999 11:11:45:433AM | 990422005 | Steve Wukitch | 005 plasma H-mode nl_04~1.1x10^20 next shot: energize E-port and increase density ~1.2 |
| Apr 22 1999 12:38:22:827PM | 990422006 | Steve Wukitch | 006 plasma faults |
| Apr 22 1999 12:38:36:390PM | 990422007 | Steve Wukitch | 007 early disruption |
| Apr 22 1999 12:38:47:873PM | 990422008 | Steve Wukitch | 008 plasma ramp on E-port |
| Apr 22 1999 12:39:22:107PM | 990422009 | Steve Wukitch | 009 plasma ramp on E-port |
| Apr 22 1999 12:53:17:857PM | 990422010 | Steve Wukitch | 010 fizzle |
| Apr 22 1999 01:49:08:623PM | 990422011 | Steve Wukitch | 011 plasma E-port crowbar early |
| Apr 22 1999 01:49:31:403PM | 990422012 | Steve Wukitch | 012 plasma 1.25 MW each with #1 faulting |
| Apr 22 1999 01:49:48:247PM | 990422013 | Steve Wukitch | 013 plasma no fast gas - very low density next shot: repeat with some gas this time |
| Apr 22 1999 02:22:48:247PM | 990422014 | Steve Wukitch | 014 fizzle |
| Apr 22 1999 02:23:00:730PM | 990422015 | Steve Wukitch | 015 plasma 1 MW each with 3 faults late on D next shot: repeat with increased RF power |
| Apr 22 1999 02:32:49:390PM | 990422016 | Steve Wukitch | 016 plasma low density again because there was no gas after 0.1 j-bottom failed next shot: change gas feedback to C-side |
| Apr 22 1999 03:05:06:967PM | 990422017 | Steve Wukitch | 017 fizzle |
| Apr 22 1999 03:05:19:983PM | 990422018 | Steve Wukitch | 018 plasma no D-port - HV was off without notice! next shot: repeat with D-port on |
| Apr 22 1999 03:28:21:607PM | 990422019 | Steve Wukitch | 019 plasma high density 2.7 MW with some faulting on D next shot: repeat with lower density |
| Apr 22 1999 03:50:30:433PM | 990422020 | Steve Wukitch | 020 plasma 2.7 MW with increased faulting on D next shot: raise current to 1 MA |
| Apr 22 1999 05:40:40:250PM | 990422021 | Steve Wukitch | 021 plasma Ip -> 1.0 MA only one trip two H->L EN-modes |
| Apr 22 1999 05:44:17:890PM | 990422022 | Steve Wukitch | 022 plasma D-port overloaded next shot: increase outer gap ramp D-port |
| Apr 22 1999 05:44:28:607PM | 990422023 | Steve Wukitch | 023 plasma D-port faults early and stays off |
| Apr 22 1999 05:44:43:593PM | 990422024 | Steve Wukitch | 024 plasma single fault |
| Apr 22 1999 05:45:03:403PM | 990422025 | Steve Wukitch | 025 plasma voltage limit faults |
| Physics Operator Comments | |||
| Apr 22 1999 02:06:48:390PM | Dmitri Mossessian | Run in support of MP 214: ICRF conditioning. As on 990421 we will use J-bottom gas valve for the main D2 gas after 0.1 sec into the discharge but may switch back to C-side later. Start by loading from 990421011 and changing prepuff (pulse_gas4) back to 18 msec. Problems with coldstart. The log file mds$root_alpha:[syserr]daqa_bitbus_server.log contains the following line: RTNODE -- A MATRIX PRIVATE BUS NOT RESPONDING! Josh looked into it, did it again and this time it worked. | |
| Apr 22 1999 09:59:40:750AM | 990422001 | Dmitri Mossessian | The start of the run was delayed because of the RF problem. The first shot will have the RF OFF. Good shot. |
| Apr 22 1999 10:04:56:950AM | 990422002 | Dmitri Mossessian | Another ohnmic shot. Reduced target density to 1e20. Plasma. |
| Apr 22 1999 10:37:46:683AM | 990422003 | Dmitri Mossessian | Try RF on this shot. No PCS change. RF's on. L-mode. Disrupted around 1.1 sec because of an injection. |
| Apr 22 1999 10:54:15:983AM | 990422004 | Dmitri Mossessian | No PCS change. PLasma. |
| Apr 22 1999 11:10:12:140AM | 990422005 | Dmitri Mossessian | Increased target density to 1.2e20. Plasma. Density did not get to 1.2e20. Increased J-bottom puff betweeb .24 and .54 sec for next shot. |
| Apr 22 1999 11:27:36:450AM | 990422006 | Dmitri Mossessian | PLasma, H_modes. Density still low. Add gas puff in J-bottom between .1 and .2 sec |
| Apr 22 1999 11:48:29:390AM | 990422007 | Dmitri Mossessian | Disruption at .35. |
| Apr 22 1999 12:12:28:607PM | 990422008 | Dmitri Mossessian | No PCS change. PLasma, H-modes |
| Apr 22 1999 12:33:49:280PM | 990422009 | Dmitri Mossessian | Moved ZCUR 5 mm up for better edge TS coverage. Plasma, H-modes |
| Apr 22 1999 12:56:55:827PM | 990422010 | Dmitri Mossessian | No PCS change. Fizzle. Possibly because Br is too high. Changed Br offset to 0 from 2 mT in segment 1. |
| Apr 22 1999 01:11:20:217PM | 990422011 | Dmitri Mossessian | Plasma. H-mode |
| Apr 22 1999 01:57:20:513PM | 990422012 | Dmitri Mossessian | No PCS change. Plasma |
| Apr 22 1999 01:57:52:997PM | 990422013 | Dmitri Mossessian | No gas in J-bottom. Plasma , low density. |
| Apr 22 1999 02:08:08:890PM | 990422014 | Dmitri Mossessian | Fizzle. Increase prepuff to 20 msec. |
| Apr 22 1999 02:25:26:747PM | 990422015 | Dmitri Mossessian | Plasma, H-mode. For next shot bring prepuff back to 18 msec |
| Apr 22 1999 02:36:47:827PM | 990422016 | Dmitri Mossessian | Low density shot - no gas on J-bottom. Switch gas to C-side. Disable J-bottom. Set prepuff to 20 msec. |
| Apr 22 1999 02:53:21:280PM | 990422017 | Dmitri Mossessian | Fizzle. No PCS change for next shot. |
| Apr 22 1999 03:02:40:513PM | 990422018 | Dmitri Mossessian | Good shot. No RF though. |
| Apr 22 1999 03:28:04:217PM | 990422019 | Dmitri Mossessian | Reduce prepuff to 18 msec. and add .5 mT offset to Br in segment 1. Density 2e20 (asking for 1.2e20). |
| Apr 22 1999 03:35:30:793PM | 990422020 | Dmitri Mossessian | Try to lower the density by lowering the voltage in pulse_gas3 (C-side). PLasma. Density 1.3e20. H-mode. |
| Apr 22 1999 04:04:46:153PM | 990422021 | Dmitri Mossessian | Increased current to 1MA. Plasma. Density 1.3e20. Current 1MA |
| Apr 22 1999 04:20:56:530PM | 990422022 | Dmitri Mossessian | Changed the slope of the current rise. Plasma. |
| Apr 22 1999 04:39:54:577PM | 990422023 | Dmitri Mossessian | Decreased Rcur to increase outer gap by 1 cm. Plasma. |
| Apr 22 1999 04:54:36:140PM | 990422024 | Dmitri Mossessian | Lowered ZXL by 1 cm. Plasma. |
| Apr 22 1999 05:06:42:717PM | 990422025 | Dmitri Mossessian | Lowered ZXL by another 1 cm. PLasma. |
| Engineering Operator Comments | ||||
| Shot | Time | Type | Status | Comment |
| 1 | 09:43:48:903AM | Plasma | Ok | no faults/plasma |
| 2 | 10:01:50:577AM | Plasma | Ok | no faults/plasma |
| 3 | 10:23:28:810AM | Plasma | Ok | no faults/disruption |
| 4 | 10:43:53:437AM | Plasma | Ok | no faults/plasma |
| 5 | 11:02:20:437AM | Plasma | Ok | no faults/plasma |
| 6 | 11:20:53:467AM | Plasma | Ok | no faults/plasma |
| 7 | 11:40:28:030AM | Plasma | Ok | no faults/dud |
| 8 | 12:00:07:967PM | Plasma | Ok | no faults/plasma |
| 9 | 12:19:13:890PM | Plasma | Ok | No Faults |
| 10 | 12:40:24:153PM | Plasma | Ok | No Faults |
| 11 | 12:57:43:967PM | Plasma | Ok | No Faults |
| 12 | 01:13:51:607PM | Plasma | Ok | No Faults |
| 13 | 01:31:41:107PM | Plasma | Ok | No Faults |
| 14 | 01:54:52:123PM | Plasma | Ok | No Faults |
| 15 | 02:10:27:590PM | Plasma | Ok | No Faults |
| 16 | 02:27:06:967PM | Plasma | Ok | no faults/plasma |
| 17 | 02:42:19:030PM | Plasma | Ok | no faults/fizzel |
| 18 | 02:56:35:857PM | Plasma | Ok | nofaults/plasma |
| 19 | 03:14:34:437PM | Plasma | Ok | no faaults/plasma |
| 20 | 03:31:56:763PM | Plasma | Ok | no faults/plasma |
| 21 | 03:48:50:107PM | Plasma | Ok | no faults/plasma |
| 22 | 04:08:26:543PM | Plasma | Ok | no faults/plasma |
| 23 | 04:27:57:513PM | Plasma | Ok | no faults/plasma |
| 24 | 04:43:24:483PM | Plasma | Ok | no faults/plasma |
| 25 | 05:01:36:483PM | Plasma | Ok | no faults/plasma/end of run |