| Miniproposals | ||||||||||||
|
| Operators | |
| Session leader(s): | Steve Wukitch,Yijun Lin |
| Physics operator(s): | Robert Granetz |
| Engineering operator(s): | Bill Parkin,Gary Dekow |
| Engineering Operator Run Comment |
| RF Conditioning; SL:Wukitch, Lin; PO:Granetz; EO:Dekow/Parkin |
| Session Leader Plans |
| Physics Operators Plans |
| Session Leader Summaries |
| Entered: Jul 7 2004 03:49:29:680PM |
| Author: To Be Determined |
| Summary: We started plasma shots from shot 6 after the magnetic checkout. D and E were able to run 1.4 MW each for 300 ms. J was struggling. We think that an old demodulator in the power side was producing fake arc signals because the demodulator gave a too low forward power. But we did not have chance to check this idea because the last shot was a dud. For J, we have a 15 ms pedestal when starting retry in order for the phase feedback loop to kick in. The modification was successful. ---------------------------------------------------------------------------- 1020806006 ylin SESSION_LEADER Aug 6 2002 12:26:24:590PM . . . . . . . . . . . . . . . . . . . . Plasma request: inner wall limited plasma. nl= 10^20 m^-3, Bt = 5.4 Tesla, 0.8 MA RF demand: D: 1. MW, [1.2, 1.5] sec E: 1. MW. [1.2, 1.5] sec J: 1.4 MW, [0.55, 1.5] sec, soft start: 25 ms ramp from 0.1 to 0.3 MW. Result: plasma. disrupted at 0.22 sec ---------------------------------------------------------------------------- 1020806007 ylin SESSION_LEADER Aug 6 2002 1:17:21:920PM . . . . . . . . . . . . . . . . . . . . Plasma request: inner wall limited plasma. nl= 10^20 m^-3, Bt = 5.4 Tesla, 0.8 MA RF demand: D: 1. MW, [1.2, 1.5] sec E: 1. MW. [1.2, 1.5] sec J: 1.4 MW, [0.55, 1.5] sec, soft start: 25 ms ramp from 0.1 to 0.3 MW. Result: plasma. D and J many faults. E clean. ---------------------------------------------------------------------------- 1020806008 ylin SESSION_LEADER Aug 6 2002 2:59:34:076PM . . . . . . . . . . . . . . . . . . . . Plasma request: inner wall limited plasma. nl= 10^20 m^-3, Bt = 5.4 Tesla, 0.8 MA RF demand: D: 1. MW, [1.2, 1.5] sec E: 1. MW. [1.2, 1.5] sec J: 1.4 MW, [0.55, 1.5] sec, soft start: 25 ms ramp from 0.1 to 0.3 MW. Result: plasma. D and E clean. J many faults. Next: raise D and E power to 1.2 MW, Tune J3/4. reduce J power to 1 MW. ---------------------------------------------------------------------------- 1020806009 ylin SESSION_LEADER Aug 6 2002 3:08:57:703PM . . . . . . . . . . . . . . . . . . . . fizzle ---------------------------------------------------------------------------- 1020806010 ylin SESSION_LEADER Aug 6 2002 3:42:49:990PM . . . . . . . . . . . . . . . . . . . . Plasma request: inner wall limited plasma. nl= 10^20 m^-3, Bt = 5.4 Tesla, 0.8 MA RF demand: D: 1.2 MW, [1.2, 1.5] sec E: 1.2 MW. [1.2, 1.5] sec J: 1. MW, [0.55, 1.5] sec, soft start: 25 ms ramp from 0.1 to 0.3 MW. Result: plasma. D and E clean. J many faults. ---------------------------------------------------------------------------- 1020806011 ylin SESSION_LEADER Aug 6 2002 3:57:17:853PM . . . . . . . . . . . . . . . . . . . . Plasma request: inner wall limited plasma. nl= 10^20 m^-3, Bt = 5.4 Tesla, 0.8 MA RF demand: D: 1.2 MW, [1.2, 1.5] sec E: 1.2 MW. [1.2, 1.5] sec J: 1. MW, [0.55, 1.5] sec, soft start: 25 ms ramp from 0.1 to 0.3 MW. Result: plasma. D and E clean. J multi faults. ---------------------------------------------------------------------------- 1020806012 ylin SESSION_LEADER Aug 6 2002 4:25:08:710PM . . . . . . . . . . . . . . . . . . . . Plasma request: inner wall limited plasma. nl= 10^20 m^-3, Bt = 5.4 Tesla, 0.8 MA RF demand: D: 1.3 MW, [1.2, 1.5] sec E: 1.3 MW. [1.2, 1.5] sec J: .6 MW, [0.55, 1.5] sec, soft start: 25 ms ramp from 0.1 to 0.3 MW. Result: plasma. D and E clean. J multi-faults. ---------------------------------------------------------------------------- 1020806013 ylin SESSION_LEADER Aug 6 2002 4:57:15:493PM . . . . . . . . . . . . . . . . . . . . Plasma request: inner wall limited plasma. nl= 10^20 m^-3, Bt = 5.4 Tesla, 0.8 MA RF demand: D: 1.4 MW, [1.2, 1.5] sec E: 1.4 MW. [1.2, 1.5] sec J: .6 MW, [0.55, 1.5] sec, soft start: 25 ms ramp from 0.1 to 0.3 MW. Result: plasma. D and E clean. J multi-faults. Next shot: D and E 1.5 MW each. Add a 3 db attenuator on J3 DC1 reflected power. ---------------------------------------------------------------------------- 1020806014 ylin SESSION_LEADER Aug 6 2002 5:10:24:890PM . . . . . . . . . . . . . . . . . . . . dud |
| Physics Operator Summaries |
| Entered: Jul 7 2004 04:37:15:567PM |
| Author: To Be Determined |
| Physics operator summary for run 1020806 (Tuesday): Session leader: S. Wukitch, Y. Lin Physics operator: R. Granetz Engineer in charge: G. Dekow, W. Parkin Summary: We spent the morning tracking down a few problems with the new magnetics CPCI installation. These were eventually found to be due to a bad ribbon cable and to two shorts in the new patch panel. Once we started plasma operation, the machine ran well. So did the D and E RF systems, with up to 2.7 MW into plasma. J did not perform well. H/D was rather high (10+ %), but the RF guys didn't care. The ECE roughing pump failed today, leaving us with no GPC data. A 13.8 kV breaker pulled open for some reason between shots, which caused the alternator to slow down to 1000 rpm, resulting in a significant delay early in the afternoon. A fire alarm late in the afternoon and the subsequent evacuation of the building resulted in further delays. Scorecard: 7 plasmas 1 fizzles 1 duds 5 tests 0 aborted and/or screwed up by computer problems ---------- 14 total ------------------------------------------------------------------------------- Engineering setup for Tuesday 06 Aug 2002 ECDC in the morning, if possible, stopping by 07:00. Set up for possible ECDC in D2 between shots. Run begins at 09:00 and ends at 17:00. We need to test the magnetics system, which underwent a massive reconfiguration to incorporate the new compact PCI-based data acquisition and finally retire the troublesome Traq digitizers. Set up power systems for a standard OH test, such as 1020702003, in order to check out the magnetics and hybrid signals. There were literally hundreds of signal cables changed in the magnetics racks yesterday, many data acquisition modules changed or removed or added, and hundreds of corresponding changes that had to be made in the magnetics tree. So one test shot should be enough. For the beginning of plasma operation, set up power systems as on 1020731010, which was a limited plasma (for the RF...no H-modes) Note: The RF will be firing into vacuum before the run begins, so we will want to do 10 minutes of ECDC just before the first plasma shot. If the H/D begins to rise during the run, we will want to do between-shot ECDC as well. Gas setup: fill B-Top with 6 psi D2 Hybrid enabled (PG4) fill B-side lower with 1 psi Ar Hybrid enabled (PG1) fill B-side upper with 10 psi D2 Hybrid DISABLED (PG2) (for ECDC) fill C-side with 30 psi D2 Hybrid enabled (PG3) leave J-Bottom as is Hybrid DISABLED (PG5) Enable the following gate valves, assuming no vacuum problems: ECE, VUV, DNB ------------------------------------------------------------------------------- RF Setup: All 4 transmitters in Run On by 07:00. ------------------------------------------------------------------------------- Run Plan: Work on D, E, and J systems into plasma. Start by loading segment 2 from 1020731010 (limiter plasma)and let the RF go at it. We may switch to a diverted shot later in the day (use segment 2 from 1020802021) Note: The RF will be firing into vacuum before the run begins, so we will want to do 10 minutes of ECDC just before the first plasma shot. If the H/D begins to rise during the run, we will want to do between-shot ECDC as well. ------------------------------------------------------------------------------- One hour of ECDC in D2 was done this morning (after an entire weekend of ECDC). Hybrid coldstart done; no errors found Loaded PCS segment 1 from shot 1020802021 (recent startup) and segment 2 from shot 1020731010 (limited plasma). Do 10 minutes of ECDC prior to the first shot, since the RF was firing into vacuum prior to the run. ------------------------------------------------------------------------------- Shot 01 -- Test of MDS shot cycle. No power. All the magnetics data acquisition worked. Shot 02 -- Test. OH test under PLC control to check magnetics status. A handful of magnetics signals have problems. It's being worked on. Shot 03 -- Test. OH test under PLC control to check magnetics status. Still some magnetics problems Shot 04 -- Test. OH test under PLC control to check magnetics status. Most of the magnetics problems have been fixed. But there's no hint of a signal on the Ip rogowski. Shot 05 -- Test. OH test under PLC control to check magnetics status. It looks like all necessary signals are working, although Btor has not been exercised by these OH tests. Next shot: go for plasma. ECDC for 10 minutes is being done before the next shot. Shot 06 -- Plasma. Disrupted at t=0.22 s, due to an injection from J-antenna. Next shot: turn on segment 2 (limited), not segment 3 ! (physop error). Shot 07 -- Plasma. Good full-length shot. Limiter discharge. Ip=0.76 MA, Btor=5.3 T, nl_04=1e20 m-2. Prf=1 MW from E, short blips from D and J. Z-meter is out-to-lunch. Jim Irby is looking at it. EFIT ran with no problems, and reported no magnetics outliers. The pre-fill pressure and the Bz0 at breakdown are very different than previous days. We think the ratiomatic may need to be recalibrated. But could the difference in Bz0 be due to the new magnetics? Next shot: no changes. Now having power room access for RF guys. 13.8 kV breaker has suddenly opened. The alternator is slowing down. This might delay the run some. Shot 08 -- Plasma. Good shot. Limited. Disrupted during rampdown. Density was higher than programmed, maybe due to the helium puffing from the NINJA system starting at t=0.5 s. Prf_D=1 MW, Prf_E=1 MW (both very constant), Prf_J= ~0.5 MW, but not steady. Next shot: repeat, with the NINJA delayed until t=1.2 s. Shot 09 -- Fizzle. The startup was getting rather ragged. Next shot: increase IC_EF4U by 15 amps Shot 10 -- Plasma. Good shot. Brian changed the ratiomatic calibration again, but I think it's now too high. Bz0 is really high, but the machine seems to like it for startup. Prf=2.4 MW (D+E). J is having its difficulties. H/D is up to 10%. Next shot: no PCS changes. Shot 11 -- Plasma. Good shot. ECE roughing pump failed earlier today, so we haven't had GPC Te for the afternoon. Prf=2.5 MW D+E. Wimpy bursts from J. H/D=11% Next shot: no PCS changes. ECDC being done now between shots. Shot 12 -- Plasma. Good shot. Still running a limiter configuration to avoid H-modes for the RF. Prf=2.5 MW D+E. J gave about 0.5+ MW. H/D dropped to 0.8% after the between-shot ECDC. Next shot: no PCS changes. No between-shot ECDC. Fire alarm! Evacuate building. This could end the run. Shot 13 -- Plasma. Good shot. Prf=2.65 MW D+E. J is just piddling along. Next shot: no PCS changes. No between-shot ECDC. Shot 14 -- Dud. Bz0 too high? End of run |
| Session Leader Comments | |||
| Aug 6 2002 12:26:24:590PM | 1020806006 | Yijun Lin | Plasma request: inner wall limited plasma. nl= 10^20 m^-3, Bt = 5.4 Tesla, 0.8 MA RF demand: D: 1. MW, [1.2, 1.6] sec E: 1. MW. [1.2, 1.6] sec J: 1.4 MW, [0.55, 1.6] sec, soft start: 25 ms ramp from 0.1 to 0.3 MW. Result: plasma. disrupted at 0.22 sec |
| Aug 6 2002 01:17:21:920PM | 1020806007 | Yijun Lin | Plasma request: inner wall limited plasma. nl= 10^20 m^-3, Bt = 5.4 Tesla, 0.8 MA RF demand: D: 1. MW, [1.2, 1.6] sec E: 1. MW. [1.2, 1.6] sec J: 1.4 MW, [0.55, 1.6] sec, soft start: 25 ms ramp from 0.1 to 0.3 MW. Result: plasma. D and J many faults. E clean. |
| Aug 6 2002 02:59:34:077PM | 1020806008 | Yijun Lin | Plasma request: inner wall limited plasma. nl= 10^20 m^-3, Bt = 5.4 Tesla, 0.8 MA RF demand: D: 1. MW, [1.2, 1.6] sec E: 1. MW. [1.2, 1.6] sec J: 1.4 MW, [0.55, 1.6] sec, soft start: 25 ms ramp from 0.1 to 0.3 MW. Result: plasma. D and E clean. J many faults. Next: raise D and E power to 1.2 MW, Tune J3/4. reduce J power to 1 MW. |
| Aug 6 2002 03:08:57:703PM | 1020806009 | Yijun Lin | fizzle |
| Aug 6 2002 03:42:49:990PM | 1020806010 | Yijun Lin | Plasma request: inner wall limited plasma. nl= 10^20 m^-3, Bt = 5.4 Tesla, 0.8 MA RF demand: D: 1.2 MW, [1.2, 1.6] sec E: 1.2 MW. [1.2, 1.6] sec J: 1. MW, [0.55, 1.6] sec, soft start: 25 ms ramp from 0.1 to 0.3 MW. Result: plasma. D and E clean. J many faults. |
| Aug 6 2002 03:57:17:853PM | 1020806011 | Yijun Lin | Plasma request: inner wall limited plasma. nl= 10^20 m^-3, Bt = 5.4 Tesla, 0.8 MA RF demand: D: 1.2 MW, [1.2, 1.6] sec E: 1.2 MW. [1.2, 1.6] sec J: 1. MW, [0.55, 1.6] sec, soft start: 25 ms ramp from 0.1 to 0.3 MW. Result: plasma. D and E clean. J multi faults. |
| Aug 6 2002 04:25:08:710PM | 1020806012 | Yijun Lin | Plasma request: inner wall limited plasma. nl= 10^20 m^-3, Bt = 5.4 Tesla, 0.8 MA RF demand: D: 1.3 MW, [1.2, 1.6] sec E: 1.3 MW. [1.2, 1.6] sec J: .6 MW, [0.55, 1.6] sec, soft start: 25 ms ramp from 0.1 to 0.3 MW. Result: plasma. D and E clean. J multi-faults. |
| Aug 6 2002 04:57:15:493PM | 1020806013 | Yijun Lin | Plasma request: inner wall limited plasma. nl= 10^20 m^-3, Bt = 5.4 Tesla, 0.8 MA RF demand: D: 1.4 MW, [1.2, 1.5] sec E: 1.4 MW. [1.2, 1.5] sec J: .6 MW, [0.55, 1.5] sec, soft start: 25 ms ramp from 0.1 to 0.3 MW. Result: plasma. D and E clean. J multi-faults. Next shot: D and E 1.5 MW each. Add a 3 db attenuator on J3 DC1 reflected power. |
| Aug 6 2002 05:10:24:890PM | 1020806014 | Yijun Lin | dud |
| Physics Operator Comments | |||
| Aug 6 2002 08:42:53:680AM | Robert Granetz | Engineering setup for Tuesday 06 Aug 2002 ECDC in the morning, if possible, stopping by 07:00. Set up for possible ECDC in D2 between shots. Run begins at 09:00 and ends at 17:00. We need to test the magnetics system, which underwent a massive reconfiguration to incorporate the new compact PCI-based data acquisition and finally retire the troublesome Traq digitizers. Set up power systems for a standard OH test, such as 1020702003, in order to check out the magnetics and hybrid signals. There were literally hundreds of signal cables changed in the magnetics racks yesterday, many data acquisition modules changed or removed or added, and hundreds of corresponding changes that had to be made in the magnetics tree. So one test shot should be enough. For the beginning of plasma operation, set up power systems as on 1020731010, which was a limited plasma (for the RF...no H-modes) Note:The RF will be firing into vacuum before the run begins, so we will want to do 10 minutes of ECDC just before the first plasma shot. If the H/D begins to rise during the run, we will want to do between-shot ECDC as well. Gas setup: fill B-Top with 6 psi D2 Hybrid enabled (PG4) fill B-side lower with 1 psi Ar Hybrid enabled (PG1) fill B-side upper with 10 psi D2 Hybrid DISABLED (PG2) (for ECDC) fill C-side with 30 psi D2 Hybrid enabled (PG3) leave J-Bottom as is Hybrid DISABLED (PG5) Enable the following gate valves, assuming no vacuum problems: ECE, VUV, DNB ------------------------------------------------------------------------------- RF Setup: All 4 transmitters in Run On by 07:00. | |
| Aug 6 2002 08:43:06:803AM | Robert Granetz | Run Plan: Work on D, E, and J systems into plasma. Start by loading segment 2 from 1020731010 (limiter plasma)and let the RF go at it. We may switch to a diverted shot later in the day (use segment 2 from 1020802021) Note: The RF will be firing into vacuum before the run begins, so we will want to do 10 minutes of ECDC just before the first plasma shot. If the H/D begins to rise during the run, we will want to do between-shot ECDC as well. | |
| Aug 6 2002 08:43:22:900AM | Robert Granetz | One hour of ECDC in D2 was done this morning (after an entire weekend of ECDC). Hybrid coldstart done; no errors found Loaded PCS segment 1 from shot 1020802021 (recent startup) and segment 2 from shot 1020731010 (limited plasma). Do 10 minutes of ECDC prior to the first shot, since the RF was firing into vacuum prior to the run. | |
| Aug 6 2002 09:16:49:747AM | 1020806001 | Robert Granetz | Shot 01 -- Test of MDS shot cycle. No power. All the magnetics data acquisition worked. |
| Aug 6 2002 11:14:38:803AM | 1020806002 | Robert Granetz | Shot 02 -- Test. OH test under PLC control to check magnetics status. A handful of magnetics signals have problems. It's being worked on. |
| Aug 6 2002 11:15:18:210AM | 1020806003 | Robert Granetz | Shot 03 -- Test. OH test under PLC control to check magnetics status. Still some magnetics problems |
| Aug 6 2002 11:24:05:613AM | 1020806004 | Robert Granetz | Shot 04 -- Test. OH test under PLC control to check magnetics status. Most of the magnetics problems have been fixed. But there's no hint of a signal on the Ip rogowski. |
| Aug 6 2002 12:08:18:813PM | 1020806005 | Robert Granetz | Shot 05 -- Test. OH test under PLC control to check magnetics status. It looks like all necessary signals are working, although Btor has not been exercised by these OH tests. Next shot: go for plasma. ECDC for 10 minutes is being done before the next shot. |
| Aug 6 2002 12:35:30:107PM | 1020806006 | Robert Granetz | Shot 06 -- Plasma. Disrupted at t=0.22 s, due to an injection from J-antenna. Next shot: turn on segment 2 (limited), not segment 3 ! (physop error). |
| Aug 6 2002 01:09:51:770PM | 1020806007 | Robert Granetz | Now having power room access for RF guys. |
| Aug 6 2002 01:09:59:707PM | 1020806007 | Robert Granetz | 13.8 kV breaker has suddenly opened. The alternator is slowing down. This might delay the run some. |
| Aug 6 2002 01:16:28:420PM | 1020806007 | Robert Granetz | Shot 07 -- Plasma. Good full-length shot. Limiter discharge. Ip=0.76 MA, Btor=5.3 T, nl_04=1e20 m-2. Prf=1 MW from E, short blips from D and J. Z-meter is out-to-lunch. Jim Irby is looking at it. EFIT ran with no problems, and reported no magnetics outliers. The pre-fill pressure and the Bz0 at breakdown are very different than previous days. We think the ratiomatic may need to be recalibrated. But could the difference in Bz0 be due to the new magnetics? Next shot: no changes. |
| Aug 6 2002 02:59:14:890PM | 1020806008 | Robert Granetz | Shot 08 -- Plasma. Good shot. Limited. Disrupted during rampdown. Density was higher than programmed, maybe due to the helium puffing from the NINJA system starting at t=0.5 s. Prf_D=1 MW, Prf_E=1 MW (both very constant), Prf_J= ~0.5 MW, but not steady. Next shot: repeat, with the NINJA delayed until t=1.2 s. |
| Aug 6 2002 05:11:35:953PM | 1020806009 | Robert Granetz | Shot 09 -- Fizzle. The startup was getting rather ragged. Next shot: increase IC_EF4U by 15 amps |
| Aug 6 2002 03:36:57:887PM | 1020806010 | Robert Granetz | Shot 10 -- Plasma. Good shot. Brian changed the ratiomatic calibration again, but I think it's now too high. Bz0 is really high, but the machine seems to like it for startup. Prf=2.4 MW (D+E). J is having its difficulties. H/D is up to 10%. Next shot: no PCS changes. |
| Aug 6 2002 03:56:04:070PM | 1020806011 | Robert Granetz | Shot 11 -- Plasma. Good shot. ECE roughing pump failed earlier we haven't had GPC Te for the afternoon. Prf=2.5 MW D bursts from J. H/D=11% Next shot: no PCS changes. ECDC being done now between shots. |
| Aug 6 2002 04:34:02:207PM | 1020806012 | Robert Granetz | Shot 12 -- Plasma. Good shot. Still running a limiter configuration to avoid H-modes for the RF. Prf=2.5 MW D+E. J gave about 0.5+ MW. H/D dropped to 0.8% after the between-shot ECDC. Next shot: no PCS changes. No between-shot ECDC. |
| Aug 6 2002 04:34:50:990PM | 1020806012 | Robert Granetz | Fire alarm! Evacuate building. This could end the run. |
| Aug 6 2002 04:50:52:890PM | 1020806013 | Robert Granetz | Shot 13 -- Plasma. Good shot. Prf=2.65 MW D+E. J is just piddling along. Next shot: no PCS changes. No between-shot ECDC. |
| Aug 6 2002 05:11:05:733PM | 1020806014 | Robert Granetz | Shot 14 -- Dud. Bz0 too high? End of run |
| Engineering Operator Comments | ||||
| Shot | Time | Type | Status | Comment |
| 1 | 09:08:09:250AM | Test | Ok | No Power Test |
| 2 | 09:24:12:540AM | Test | Ok | OH PLC Test |
| 3 | 10:41:15:830AM | Test | Ok | |
| 4 | 11:16:27:587AM | Test | Ok | OH PLC Test for magnetic's signals check |
| 5 | 12:00:50:263PM | Test | Ok | OH PLC Test to check magnetic's signals |
| 6 | 12:22:23:197PM | Plasma | Ok | |
| 7 | 12:39:42:033PM | Plasma | Ok | |
| 8 | 02:40:13:847PM | Plasma | Ok | |
| 9 | 03:00:03:500PM | Plasma | Ok | |
| 10 | 03:21:33:503PM | Plasma | Ok | |
| 11 | 03:41:39:703PM | Plasma | Ok | |
| 12 | 04:02:16:893PM | Plasma | Ok | |
| 13 | 04:42:37:627PM | Plasma | Ok | |
| 14 | 05:05:02:583PM | Plasma | Ok | |