| Miniproposals | ||||||||||
|
| Operators | |
| Session leader(s): | T.C. Hender |
| Physics operator(s): | Bill Rowan |
| Engineering operator(s): | Ed Fitzgerald |
| Engineering Operator Run Comment |
| MP#361 JET/C-MOD locked mode identity SL: Hender/Wolf PO: Rowan EO: Fitz |
| Session Leader Plans |
| Physics Operators Plans |
| Session Leader Summaries |
| Entered: Jul 7 2004 03:49:04:850PM |
| Author: T.C. Hender |
| Run 1040413 MP 361 Sls Hender and Wolfe PO W Rowan Another fight against fizzle and injection events due to the inherent disruptivity of the program. All data was taken with Btop-Dbot-Gtop+Jbot. The Acoil was reversed to negative polarity at shot #20. A locked mode was obtained with +Acoil (shot #10) but this was early, so OH current was low. 2 pulses with full +Acoil and no LM were obtained (Shots 2 and 6). With -Acoil currents LMs were obtained in all successful shots (20, 21l 24, 25, 26 and 29) but many were late locked modes when the OH current was >24000A (the range where most of the data was obtained) and so these pulses could be counted as no locked mode in some senses. Further analysis is now needed to attempt to remove the effect of the intrinsic error variation. In terms of further runs, data at -Acoil currents and nl04>2.5e20 is needed. Also more complete data is needed with +Acoil currents and nl04~1.4e20. Finally data with Dbot+Dtop-Jtop-Jbot is desirable. |
| Physics Operator Summaries |
| Entered: Jul 7 2004 04:36:49:850PM |
| Author: Bill Rowan |
| Physics Operator Summary for Tuesday, April 13, 2001. Run 1040413 Purpose: MP#361 JET/C-Mod locked mode identity Session Leader: Hender/Wolfe Physics Operator: W. Rowan Summary-------------------------------------------------------------------- Started the run from shot 1040408019. The machine ran reasonably well until the last few shots, and the run was relatively uneventful. The high density shots at the end of the run seemed to require a lower-than-normal BR_0 as for similar shots at the end of run 1040408. For this run as for the previous run at these conditions (1040408), there were frequent disruptions at the end of the shot and during rampdown due to injections, density, and locked modes. For most of the day, density feedback was via the z-meter because of vibration problems that prevented access to real-time TCI data for feedback. then used preprogrammed gas puff for shots 016-032. Scorecard------------------------------------------------------------------ Plasma 23 (001,002,004,005,006,007,008,009,010,011,012,013, 016,018,019,020,021,022,024,025,026,029,031) Early disruption 01 (003 Fizzles 06 (017,023,027,028,020,032) Engineering fault 01 (014) Engineering test 01 (015) Total 32 Engineering setup--------------------------------------------------------- Overnight ECDC in D2 at 2e-4 Torr Run begins at 09:00 and ends at 17:00. Power systems the same as 1040408019. TF PLC limit at least 180kA (6.32 Tesla). A-coils should be configured (+Btop -Dbot -Gtop +Jbot) 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 with 15 psi He3 fill C-side with 40 psi D2 Hybrid enabled (PG3) fill J-bottom with 40 psi D2 Hybrid enabled (PG2) Enable the following gatevalves: ECE, VUV, DNB ------------------------------------------------------------------------------- RF Setup: no RF required for this run ------------------------------------------------------------------------------- Original shot plan 1040413 q95=3.2 With Btop-Dbot-Gtop+Jbot:- 1Repeat shot 1040408019 with no A-coil. Confirm no intrinsic locked mode is formed in this case. 2Repeat 1. with A-coil ramp from 0.8s to 1.1s to 3500A and hold until 1.28s. 3If 2. does not form locked mode lower ne by 15% and repeat. If 2. does form a locked mode then refine A-coil ramp until no LM forms. With ÐBtop+Dbot+Gtop-Jbot:- 4Repeat 1. With A-coil ramp from 0.8s to 0.9s to 1200A and hold until 1.28s. Hopefully this will not form a locked mode 5Repeat shot 1040408014 with A-coil ramp from 0.8s to 0.9s to 1400A and hold until 1.28s. Hopefully this will not form a locked mode 6Repeat shot 1040408014 but with nl4~2.5e20 with A-coil ramp from 0.8s to 1.1s to 3500A and hold until 1.28s. 7If 6. forms locked mode refine A-coil ramp until no LM forms. If 6. does not form a LM lower nl4 to 2.3e20. With Dtop+Dbot-Jtop-Jbot:- 8Repeat shot 1040408014 with A-coil ramp from 0.8s to 1.1s to 3500A and hold until 1.28s. 9If 8. forms locked mode refine A-coil ramp until no LM forms. If 8. does not form a LM lower nl4 to 1.6e20 (i.e shot 1040408019) With ÐDtop-Dbot+Jtop+Jbot:- 10Repeat 8. 11Repeat 9. Detailed Log-------------------------------------------------------------------- For the first shot: Loaded shot 1040408019 as requested by SL PG2 now operates J-bottom which is filled with D2 as noted in the setup Removed all PG2 puffs from segment 2 of the loaded shot. Turned off the a-coil in segment 2 as requested by SL For start up. There were problems with startup for run 1040408. Br was lower than normal. That setup fizzled on the first shot of run 1040409, and Br and Bz were adjusted to more common values. To start this run, use segment 1 from 1040409002. Disable the a-coils for the first shot. 001. Plasma disrupted late in rampdown Next shot. Enable a-coils a-coil programming ramp from 0.9 s to 1.1 s ending at 4000 demand hold 4000 until 1.28 s when the a-coils are turned off 002. A-coils on Disruption very late in ramp down. nl_04 approx 1.7 at 1 s. Would prefer 1.4 Next shot. Shift the ramp on the a-coil back by 0.1 s reduce the nl_zmeter demand from 0.45 to 0.3. 30% reduction 003. Lasts until 0.05 s Sharp increase in carbon signal prior to disruption Next shot. No PCS changes. 004. Plasma Disruption at 0.5 s nl_04 is approx 1.0 Next shot. increase nl_zmeter demand to 0.37 to raise the density toward 1.4 No other changes. 005. Plasma nl_04 = 1.4e+20 at 1 s a-coil on at 0.83 near full current in coil at 1.06 s Next shot. nl_04 target is 1.1e+20 n_zmeter = 3.1 a-coil ramp moved back by 0.15 s 006. nl_04 = 1.3e+20 next shot. Reduce n_zmeter to 3.0 which corresponded to nl_04 = 1.0e+20 on an earlier shot. 007. Plasma nl_04 = 1.2e+20 Next shot. n_zmeter = 0.15 008. Plasma Disruption at 1.06 s. nl_04 = 0.9e+20 Next shot. Move the a-coil ramp 0.15 s earlier 009. Plasma nl_04 = 0.8e+20 A-coil on as requested Disrupted at 1.3s Next shot. change the a-coil timing step to 2000 demand at 0.3 s step to 4000 demand at 0.8 s 010. Plasma Disrupted at 1s nl_04 = 0.9e+20 Second step on the a-coil achieved a current of 3500 A Next shot. Reduce the second a-coil step to 2900 demand 011. Plasma Disruption at 0.5 s Next shot. No PCS changes. Assume that this is similar to 004. 012. Plasma Disruption at 0.5 s Next shot. Moved the increase in density earlier. 013. Plasma Disruption at 1.17s Next shot. Decrease the first a-coil step to 1300 demand 014. No power. Engineering fault. Next shot. Changed tp preprogrammed gas feed. n_zmeter proportional gain to 0 copied the pulse gas to the pg3 programming on the V's screen 015. 50 kA PLC test Test was successful Next shot. No PCS changes 016. Plasma Disruption at 0.66s nl_04 similar to 010 as expected Next shot. Changed PG3. ramping from 60 at 0.1 s to 70 at 05s 017. Fizzle Next shot. No PCS changes 018. Plasma Disruption at 0.9 s Next shot., No PCS changes 019. Plasma Disruption at 0.4s Next shot. Change the A-coil hook up -Btop + Dbot + Gtop - Jbot Reload 001 Enable the a-coils square waveform from 0.8, 1.28 s with max demand of 1500 020. Plasma Disruption at 1.4 s Next shot. A-coil demand 1200 021. Plasma Disruption at 1.4 s. During rampdown. A-coil current = 740 A Next shot. A-coil demand to 900 A 022. Plasma Disruption at 1.4 s Next shot. No PCS changes. 023. Fizzle Next shot. No PCS changes. 024. Plasma Disruption at 1.5 s Next shot. Loaded segment 2 from 1040408014 square waveform from 0.8, 1.28 s with max demand of 1700 025. Plasma Disruption at 1.5 s Short puff from J-bottom because the PG2 programming was not changed when the shot was reloaded Next shot. Reduced a-coil demand to 1100 A Removed PG2 programming 026, Plasma Disruption at 1.5 s Next shot. set the nl_zmeter to 1.0 PG2 in segment 2 has a square wave. on at 0.5 s and off at 1.5 s magnitude is 50 027. Fizzle Next shot. No PCS changes 028. Fizzle. Next shot. Reduce BR_0 by 0.5 mT to -0.0005 029. Next shot. a-coil current demand is 1500 pg2 magnitude increased to 100 in segment 2 turn on time changed to 0.3s PG3 point at 0.2s increased to 80 030. Fizzle Next shot. Reduced BR_0 by 0.5 mT to -0.001 031. Plasma a-coil current is 1000 A Next shot. A-coil demand to 2500 A PG3 pulse turned on for this shot at 150 ms 032. Fizzle. Prefill pressure was up. The BR_0 thrash was large here as well. Absent on the previous shot. |
| Session Leader Comments | |||
| Apr 13 2004 08:58:52:723AM | T.C. Hender | MP361 Error Field Identity Experiments with JET This is a continuation of run 1040408 using 1.27MA, 6.32T plasams. The aims are to:- (a) Obtain obtain error field threshold with +Btop-Dbot-Gtop+Jbot. This will necessarily be a low density ~1.5e20 because with this phasing the A-coil opposes the intrinsics error (b) Obtain further data on error field thresholds with -Btop+Dbot+Gtop-Jbot. Both at intermediate and higher densities (~2.5e20) (c) Obtain error field thresholds with +/-(Dtop+Dbot-Jtop-Jbot) | |
| Apr 13 2004 09:07:45:263AM | 1040413001 | T.C. Hender | Shot #1 Looks good nl04~1.5e20 and no locked mode. So full power on A-coil on next pulse. |
| Apr 13 2004 09:23:11:953AM | 1040413002 | T.C. Hender | Shot #2 OK but nl04~1.7e20, Acoil on to 3400A and no locked mode. So lower nl04 to 1.4e20 on next pulse. |
| Apr 13 2004 09:44:18:493AM | 1040413003 | T.C. Hender | Shot #3 Plasma stops at 150kA and 0.04s. |
| Apr 13 2004 09:55:42:770AM | 1040413004 | T.C. Hender | Shot #4 Early disruption at 0.51s. Density nl04~1e20 - considerably below the target. Try again with higher reference on Z-meter. |
| Apr 13 2004 10:14:34:110AM | 1040413005 | T.C. Hender | Shot #5 OK nl04~1.4e20 but no locked mode at Acoil =3500A. Next shot aim for nl04=1.1e20 |
| Apr 13 2004 10:25:21:003AM | 1040413006 | T.C. Hender | Shot #6 OK nl04~1.3e20 but no locked mode at Acoil =3400A. Next shot aim for nl04=1.1e20 |
| Apr 13 2004 10:51:34:433AM | 1040413007 | T.C. Hender | Shot #7 OK but nl04~1.4e20 still and so no locked mode at Acoil =3400A. Next shot aim for nl04=1.1e20 again |
| Apr 13 2004 11:07:18:613AM | 1040413008 | T.C. Hender | Shot #8 OK with nl04~1.0e20 but unfortunately an injection event at 0.68s causes a locked mode and a disruption at 1.06s |
| Apr 13 2004 11:26:53:490AM | 1040413009 | T.C. Hender | Shot #9 made a locked mode early at 0.57s with A-coil only at 560s and nl04=6.6e19s. Suspect an intrinsic locked mode, so apply correction early. |
| Apr 13 2004 11:38:16:600AM | 1040413010 | T.C. Hender | Shot #10 good shot! Made a locked mode at 0.94s with A-coil at 3300A and nl04=8.5e19. Next shot reduce A-coil to 2500A and see if that makes a locked mode |
| Apr 13 2004 12:00:41:993PM | 1040413011 | T.C. Hender | Shot #11 early disruption at 0.52s. |
| Apr 13 2004 12:08:45:930PM | 1040413012 | T.C. Hender | Shot #12 and another early disruption at 0.52s, locked mode at 0.37s, but not clear if this is important. Next pulse try to get density a bit higher earlier. |
| Apr 13 2004 12:24:07:687PM | 1040413013 | T.C. Hender | Shot #13 early locked mode at 0.63s. Could be a driven locked mode still. Next shot reduce early intrinsic locked mode compensation to 800A. |
| Apr 13 2004 01:13:28:107PM | 1040413016 | T.C. Hender | Shot #16 early locked mode at 0.61s. Could be a driven locked mode still. Next shot raise early density |
| Apr 13 2004 01:18:55:053PM | 1040413017 | T.C. Hender | Shot #17 fizzle |
| Apr 13 2004 01:41:54:180PM | 1040413018 | T.C. Hender | Shot #18 disruption at 0.9s seems to be caused by an injection event at 0.88s. Try again and hope. |
| Apr 13 2004 02:02:34:150PM | 1040413019 | T.C. Hender | Shot #19 early disruption following an injection event |
| Apr 13 2004 02:13:11:103PM | 1040413020 | T.C. Hender | Reverse A-coil current. Locked mode at 0.92s with nl04=6.7 OK. Drop A-coil to 700A in next pulse |
| Apr 13 2004 02:22:05:650PM | 1040413021 | T.C. Hender | Shot 21. Reversed A-coil current. Locked mode at 1.12s with nl04=1.4 and A-coil of 650A |
| Apr 13 2004 02:38:14:080PM | 1040413022 | T.C. Hender | Shot 22. Injection event at 1.17s causes locked mode. Try again and hope for no injection |
| Apr 13 2004 02:45:02:420PM | 1040413023 | T.C. Hender | Shot 23. Fizzle |
| Apr 13 2004 03:08:18:987PM | 1040413024 | T.C. Hender | Shot 22. Locked mode at 1.24s with nl04=1.4e20. Next shot go to higher density |
| Apr 13 2004 03:18:32:500PM | 1040413025 | T.C. Hender | Shot 25. Locked mode at 1.11s with nl04=2.1e20 and Acoil=1200A. Next shot go to 600A in A-coil |
| Apr 13 2004 03:21:42:617PM | 1040413025 | T.C. Hender | Shot 25. Locked mode at 1.11s with nl04=2.1e20 and Acoil=1200A. Next shot go to 600A in A-coil |
| Apr 13 2004 03:46:31:827PM | 1040413026 | T.C. Hender | Shot 26. Locked mode at 1.25s with nl04=2.e20 and Acoil=600A. |
| Apr 13 2004 03:51:33:850PM | 1040413027 | T.C. Hender | Shot 27. Fizzle |
| Apr 13 2004 04:04:01:247PM | 1040413028 | T.C. Hender | Shot 28. Fizzle |
| Apr 13 2004 04:23:49:150PM | 1040413029 | T.C. Hender | Shot 29. Density still at nl04=2.1e20 locked mode at 1.26s and Acoil=512A |
| Apr 13 2004 04:31:05:427PM | 1040413030 | T.C. Hender | Shot30. Fizzle |
| Apr 13 2004 04:51:20:287PM | 1040413031 | T.C. Hender | Shot31. Locked mode at 1.21s but seems associated with injection event. |
| Apr 13 2004 04:57:33:767PM | 1040413032 | T.C. Hender | Shot32. Fizzle. |
| Physics Operator Comments | |||
| Apr 13 2004 07:08:34:503AM | Bill Rowan | Engineering setup for Tuesday, April 13, 2004. Run 1040413 MP#361 JET/C-Mod locked mode identity Session leader: Hender/Wolfe Physics operator: Rowan Overnight ECDC in D2 at 2e-4 Torr Run begins at 09:00 and ends at 17:00. Power systems the same as 1040408019. TF PLC limit at least 180kA (6.32 Tesla). A-coils should be configured (+Btop -Dbot -Gtop +Jbot) 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 with 15 psi He3 fill C-side with 40 psi D2 Hybrid enabled (PG3) fill J-bottom with 40 psi D2 Hybrid enabled (PG2) Enable the following gatevalves: ECE, VUV, DNB ------------------------------------------------------------------------------- RF Setup: no RF required for this run ------------------------------------------------------------------------------- Shot plan 1040413 q95=3.2 With Btop-Dbot-Gtop+Jbot:- 1Repeat shot 1040408019 with no A-coil. Confirm no intrinsic locked mode is formed in this case. 2Repeat 1. with A-coil ramp from 0.8s to 1.1s to 3500A and hold until 1.28s. 3If 2. does not form locked mode lower ne by 15% and repeat. If 2. does form a locked mode then refine A-coil ramp until no LM forms. With ÐBtop+Dbot+Gtop-Jbot:- 4Repeat 1. With A-coil ramp from 0.8s to 0.9s to 1200A and hold until 1.28s. Hopefully this will not form a locked mode 5Repeat shot 1040408014 with A-coil ramp from 0.8s to 0.9s to 1400A and hold until 1.28s. Hopefully this will not form a locked mode 6Repeat shot 1040408014 but with nl4~2.5e20 with A-coil ramp from 0.8s to 1.1s to 3500A and hold until 1.28s. 7If 6. forms locked mode refine A-coil ramp until no LM forms. If 6. does not form a LM lower nl4 to 2.3e20. With Dtop+Dbot-Jtop-Jbot:- 8Repeat shot 1040408014 with A-coil ramp from 0.8s to 1.1s to 3500A and hold until 1.28s. 9If 8. forms locked mode refine A-coil ramp until no LM forms. If 8. does not form a LM lower nl4 to 1.6e20 (i.e shot 1040408019) With ÐDtop-Dbot+Jtop+Jbot:- 10Repeat 8. 11Repeat 9. | |
| Apr 13 2004 07:42:51:400AM | Bill Rowan | For the first shot: Loaded shot 1040408019 as requested by SL PG2 now operates J-bottom which is filled with D2 as noted in the setup Removed all PG2 puffs from segment 2 of the loaded shot. Turned off the a-coil in segment 2 as requested by SL | |
| Apr 13 2004 08:06:59:240AM | Bill Rowan | For start up. There were problems with startup for run 1040408. Br was lower than normal. That setup fizzled on the first shot of run 1040409, and Br and Bz were adjusted to more common values. To start this run, use segment 1 from 1040409002. | |
| Apr 13 2004 08:37:54:340AM | Bill Rowan | Disable the a-coils for the first shot. | |
| Apr 13 2004 09:30:46:197AM | 1040413001 | Bill Rowan | 001. Plasma disrupted late in rampdown Next shot. Enable a-coils a-coil programming ramp from 0.9 s to 1.1 s ending at 4000 demand hold 4000 until 1.28 s when the a-coils are turned off |
| Apr 13 2004 09:30:23:807AM | 1040413002 | Bill Rowan | 002. A-coils on Disruption very late in ramp down. nl_04 approx 1.7 at 1 s. Would prefer 1.4 Next shot. Shift the ramp on the a-coil back by 0.1 s reduce the nl_zmeter demand from 0.45 to 0.3. 30% reduction |
| Apr 13 2004 09:45:59:200AM | 1040413003 | Bill Rowan | 003. Lasts until 0.05 s Sharp increase in carbon signal prior to disruption Next shot. No PCS changes. |
| Apr 13 2004 09:57:55:853AM | 1040413004 | Bill Rowan | 004. Plasma Disruption at 0.5 s nl_04 is approx 1.0 Next shot. increase nl_zmeter demand to 0.37 to raise the density toward 1.4 No other changes. |
| Apr 13 2004 10:07:20:790AM | 1040413005 | Bill Rowan | 005. Plasma nl_04 = 1.4e+20 at 1 s a-coil on at 0.83 near full current in coil at 1.06 s |
| Apr 13 2004 10:13:21:423AM | 1040413005 | Bill Rowan | Next shot. nl_04 target is 1.1e+20 n_zmeter = 3.1 a-coil ramp moved back by 0.15 s |
| Apr 13 2004 10:24:26:987AM | 1040413006 | Bill Rowan | 006. nl_04 = 1.3e+20 next shot. Reduce n_zmeter to 3.0 which corresponded to nl_04 = 1.0e+20 on an earlier shot. |
| Apr 13 2004 10:44:21:813AM | 1040413007 | Bill Rowan | 007. Plasma nl_04 = 1.2e+20 Next shot. n_zmeter = 0.15 |
| Apr 13 2004 11:03:38:063AM | 1040413008 | Bill Rowan | 008. Plasma Disruption at 1.06 s. nl_04 = 0.9e+20 Next shot. Move the a-coil ramp 0.15 s earlier |
| Apr 13 2004 11:25:46:207AM | 1040413009 | Bill Rowan | 009. Plasma nl_04 = 0.8e+20 A-coil on as requested Disrupted at 1.3s Next shot. change the a-coil timing step to 2000 demand at 0.3 s step to 4000 demand at 0.8 s |
| Apr 13 2004 11:37:46:160AM | 1040413010 | Bill Rowan | 010. Plasma Disrupted at 1s nl_04 = 0.9e+20 Second step on the a-coil achieved a current of 3500 A Next shot. Reduce the second a-coil step to 2900 demand |
| Apr 13 2004 11:51:00:700AM | 1040413011 | Bill Rowan | 011. Plasma Disruption at 0.5 s Next shot. No PCS changes. Assume that this is similar to 004. |
| Apr 13 2004 12:08:19:537PM | 1040413012 | Bill Rowan | 012. Plasma Disruption at 0.5 s Next shot. Moved the increase in density earlier. |
| Apr 13 2004 12:20:53:290PM | 1040413013 | Bill Rowan | 013. Plasma Disruption at 1.17s Next shot. Decrease the first a-coil step to 1300 demand |
| Apr 13 2004 12:48:25:960PM | 1040413014 | Bill Rowan | 014. No power. Engineering fault. Next shot. Changed tp preprogrammed gas feed. n_zmeter proportional gain to 0 copied the pulse gas to the pg3 programming on the V's screen |
| Apr 13 2004 12:56:08:563PM | 1040413015 | Bill Rowan | 015. 50 kA PLC test Test was successful Next shot. No PCS changes |
| Apr 13 2004 01:08:13:677PM | 1040413016 | Bill Rowan | 016. Plasma Disruption at 0.66s nl_04 similar to 010 as expected |
| Apr 13 2004 01:13:48:030PM | 1040413016 | Bill Rowan | Next shot. Changed PG3. ramping from 60 at 0.1 s to 70 at 05s |
| Apr 13 2004 01:22:12:853PM | 1040413017 | Bill Rowan | 017. Fizzle |
| Apr 13 2004 01:26:41:987PM | 1040413017 | Bill Rowan | Next shot. No PCS changes |
| Apr 13 2004 01:41:07:150PM | 1040413018 | Bill Rowan | 018. Plasma Disruption at 0.9 s Next shot., No PCS changes |
| Apr 13 2004 01:56:48:500PM | 1040413019 | Bill Rowan | 019. Plasma Disruption at 0.4s Next shot. Change the A-coil hook up -Btop + Dbot + Gtop - Jbot Reload 001 Enable the a-coils square waveform from 0.8, 1.28 s with max demand of 1500 |
| Apr 13 2004 02:07:15:550PM | 1040413020 | Bill Rowan | 020. Plasma Disruption at 1.4 s Next shot. A-coil demand 1200 |
| Apr 13 2004 02:20:56:740PM | 1040413021 | Bill Rowan | 021. Plasma Disruption at 1.4 s. During rampdown. A-coil current = 740 A Next shot. A-coil demand to 900 A |
| Apr 13 2004 02:36:43:733PM | 1040413022 | Bill Rowan | 022. Plasma Disruption at 1.4 s Next shot. No PCS changes. |
| Apr 13 2004 03:07:33:937PM | 1040413024 | Bill Rowan | 024. Plasma Disruption at 1.5 s Next shot. Loaded segment 2 from 1040408014 square waveform from 0.8, 1.28 s with max demand of 1700 |
| Apr 13 2004 03:18:50:987PM | 1040413025 | Bill Rowan | 025. Plasma Disruption at 1.5 s Short puff from J-bottom because the PG2 programming was not changed when the shot was reloaded Next shot. Reduced a-coil demand to 1100 A Removed PG2 programming |
| Apr 13 2004 03:48:19:937PM | 1040413026 | Bill Rowan | 026, Plasma Disruption at 1.5 s Next shot. set the nl_zmeter to 1.0 PG2 in segment 2 has a square wave. on at 0.5 s and off at 1.5 s magnitude is 50 |
| Apr 13 2004 03:51:40:800PM | 1040413027 | Bill Rowan | 027. Fizzle |
| Apr 13 2004 03:53:41:960PM | 1040413027 | Bill Rowan | 027. Fizzle Next shot. No PCS changes |
| Apr 13 2004 04:07:21:077PM | 1040413028 | Bill Rowan | 028. Fizzle. Next shot. Reduce BR_0 by 0.5 mT to -0.0005 |
| Apr 13 2004 04:28:43:377PM | 1040413029 | Bill Rowan | 029. Next shot. a-coil current demand is 1500 pg2 magnitude increased to 100 in segment 2 turn on time changed to 0.3s PG3 point at 0.2s increased to 80 |
| Apr 13 2004 04:33:56:917PM | 1040413030 | Bill Rowan | 030. Fizzle Next shot. Reduced BR_0 by 0.5 mT to -0.001 |
| Apr 13 2004 04:59:23:347PM | 1040413032 | Bill Rowan | |
| Engineering Operator Comments | ||||
| Shot | Time | Type | Status | Comment |
| 1 | 09:00:14:007AM | Plasma | Ok | |
| 2 | 09:16:41:510AM | Plasma | Ok | |
| 3 | 09:32:43:700AM | Plasma | Ok | |
| 4 | 09:47:07:100AM | Plasma | Ok | |
| 5 | 10:01:40:000AM | Plasma | Ok | |
| 6 | 10:17:55:837AM | Plasma | Ok | |
| 7 | 10:33:58:250AM | Plasma | Ok | |
| 8 | 10:51:48:840AM | Plasma | Ok | |
| 9 | 11:08:42:663AM | Plasma | Ok | |
| 10 | 11:28:45:273AM | Plasma | Ok | |
| 11 | 11:43:14:717AM | Plasma | Ok | |
| 12 | 11:57:34:613AM | Plasma | Ok | |
| 13 | 12:11:56:557PM | Plasma | Ok | |
| 14 | 12:24:24:140PM | Test | Ok | Scanner Test Shot |
| 15 | 12:49:05:960PM | Test | Ok | 50KA Test Shot |
| 16 | 01:01:42:743PM | Test | Ok | |
| 17 | 01:16:26:407PM | Test | Ok | |
| 18 | 01:29:13:943PM | Test | Ok | |
| 19 | 01:43:41:200PM | Plasma | Ok | |
| 20 | 01:59:55:287PM | Plasma | Ok | |
| 21 | 02:14:02:760PM | Plasma | Ok | |
| 22 | 02:28:38:770PM | Plasma | Ok | |
| 23 | 02:43:01:010PM | Plasma | Ok | |
| 24 | 02:56:50:717PM | Plasma | Ok | |
| 25 | 03:12:02:523PM | Plasma | Ok | |
| 26 | 03:32:59:257PM | Plasma | Ok | |
| 27 | 03:49:14:910PM | Plasma | Ok | |
| 28 | 04:02:11:883PM | Plasma | Ok | |
| 29 | 04:15:01:980PM | Plasma | Ok | |
| 30 | 04:28:59:097PM | Plasma | Ok | |
| 31 | 04:41:34:880PM | Plasma | Ok | |
| 32 | 04:55:38:417PM | Plasma | Ok | |