| Miniproposals | ||||||||||
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| Operators | |
| Session leader(s): | Steve Wukitch |
| Physics operator(s): | Dmitri Mossessian |
| Engineering operator(s): | Bill Cochran |
| Engineering Operator Run Comment |
| MP# 203 He3 Heating at 8T/Wukitch/Mossessian/Cochran/Fitz/Parkin |
| Session Leader Plans |
| Physics Operators Plans |
| Session Leader Summaries |
| Entered: Jul 7 2004 03:49:04:210PM |
| Author: Steve Wukitch |
| MP#203 He3 heating at 8 T SL: Wukitch PO: Mossessian This run requires 8T operation. All required bus work inspections/re-torques should be performed prior to the run. Bus temperatures need to be monitored between shots. Engineering Setup: overnight ECDC in D2, stopping 1-2 hours prior to the run. Power system as on 1030716001: TF PLC current limit at 175kA (we'll change this as the run proceeds) digitizer start at -1.6sec Acoils as on 1040330005 and enabled 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 15 psi of He3 Hybrid Enabled (as is) fill C-side with 30 psi of D2 Hybrid enabled The following gate valves should be enabled, assuming no vacuum problems: ECE, VUV, DNB, PCI, Zbolo-shutter ---------------------------------------------------- Run Plan: We will start with a lower single null 1 MA discharge as on 1040330005 (RF fiducial) 1. Raise TF over 6 shots to 8T as follows: Nominal BT hybrid current PLC limit TFstart -------- ------------- ---------- ----------- 5.4 150 175 -1.0 6 170 175 -1.1 6.5 185 190 -1.2 7 200 205 -1.3 7.5 215 220 -1.4 8 230 235 -1.5 2. Scan 3He concentration by varying the gas puff pulse width (5, 10, 15, 20, 15, 10, 5 msec pulse width with no maintenance level)and monitor plasma response to compare H-mode performance. Continue the scan till mode conversion can be localized. The RF waveform will be ~4MW from 0.6-1.3 sec. 3. Using optimum gas puff, scan RF power [3, 4, and 5 MW] for 0.8 MA, 1 MA, and 1.2 MA. 4. For optimum gas puff, scan plasma density [0.6, 0.8, and 1] at 1 MA. 5. For optimum gas puff, scan outer gap [0.5,1,1.5,2] ----------------------------------------------------------------------------------- 001 Fiducial (1 MA, BT~5.4 T, nl04~0.85) D: 1 MW [0.6,1.3]sec E: 1 MW [0.6,1.3]sec J: 2 MW [0.6,1.3]sec result: plasma - H-mode D: ran 6 faults E: ran 1 fault J: ran 5 faults 002 Fiducial (1 MA, BT~5.4 T, nl04~0.85) D: 1 MW [0.6,1.3]sec E: 1 MW [0.6,1.3]sec J: 2 MW [0.6,1.3]sec result: plasma - H-mode 6.2 T D: ran 3 faults E: ran J: ran 2 faults next shot: RF off, 6.5 T, 5 msec He3 puff 003 1 MA, BT~6.5 T, nl04~0.85) D: - MW [0.6,1.3]sec E: - MW [0.6,1.3]sec J: - MW [0.6,1.3]sec result: plasma - 6.7 T next shot: RF off, 7 T 004 1 MA, BT~7 T, nl04~0.85) D: - MW [0.6,1.3]sec E: - MW [0.6,1.3]sec J: - MW [0.6,1.3]sec result: plasma - 7.2 T next shot: RF on, 7.5 T 005 1 MA, BT~7.5 T, nl04~0.85) D: 1 MW [0.6,1.3]sec E: 1 MW [0.6,1.3]sec J: 2 MW [0.6,1.3]sec result: plasma - 7.7 T D: ran max faults E: ran J: ran briefly max faults fast density increase with application of RF 006 1 MA, BT~7.9 T, nl04~0.85), 5 msec He3 puff D: 1 MW ramp [0.6,1.3]sec E: 1 MW ramp [0.6,1.3]sec J: 2 MW ramp [0.6,1.3]sec result: plasma D: ran max faults E: ran max faults J: ran max faults prompt, fast density increase with application of RF next shot: increase He3 to 10 msec 007 TF tests 008 1 MA, BT~7.9 T, nl04~0.85), 10 msec He3 puff D: 1 MW ramp [0.6,1.25]sec E: 1 MW ramp [0.6,1.25]sec J: 2 MW ramp [0.6,1.25]sec result: plasma D: ran max faults E: ran max faults J: ran 4 faults prompt, fast density increase with application of RF during initial turnon but none later with 2 MW next shot: increase He3 to 15 msec 009 1 MA, BT~7.9 T, nl04~0.85), 10 msec He3 puff D: 1 MW ramp [0.6,1.25]sec E: 1 MW ramp [0.6,1.25]sec J: 2 MW ramp [0.6,1.25]sec result: plasma - early disruption D: ran 3 faults E: ran J: ran prompt density increase is gone heating looks better next shot: repeat 010 1 MA, BT~7.9 T, nl04~0.85), 10 msec He3 puff D: 1 MW ramp [0.6,1.25]sec E: 1 MW ramp [0.6,1.25]sec J: 2 MW ramp [0.6,1.25]sec result: plasma D: ran E: ran J: ran 1 fault nl_04 looks fairly wild - wonder if the tile is moving heating looks better next shot: repeat with 20 msec 3He pulse 011 1 MA, BT~7.9 T, nl04~0.85), 10 msec He3 puff D: 1 MW ramp [0.6,1.25]sec E: 1 MW ramp [0.6,1.25]sec J: 2 MW ramp [0.6,1.25]sec result: plasma D: ran max faults E: ran 6 faults J: ran heating is not as effect as previous shot next shot: repeat with 25 msec 3He pulse 012 1 MA, BT~7.9 T, nl04~0.85), 10 msec He3 puff D: 1 MW ramp [0.6,1.25]sec E: 1 MW ramp [0.6,1.25]sec J: 2 MW ramp [0.6,1.25]sec result: plasma D: ran max faults E: ran max faults J: ran next shot: repeat with 10 msec 3He pulse 013 1 MA, BT~7.9 T, nl04~0.85), 10 msec He3 puff D: 1 MW ramp [0.6,1.25]sec E: 1 MW ramp [0.6,1.25]sec J: 2 MW ramp [0.6,1.25]sec result: plasma D: ran max faults E: ran max faults J: ran next shot: increase plasma current to 1.2 MA 014 TF test 015 TF test 016 1 MA, BT~7.9 T, nl04~0.85), 10 msec He3 puff D: 1 MW ramp [0.6,1.25]sec E: 1 MW ramp [0.6,1.25]sec J: 2 MW ramp [0.6,1.25]sec result: plasma D: ran 3 faults E: ran 2 faults J: ran next shot: raise power and make square 017 1 MA, BT~7.9 T, nl04~0.85), 10 msec He3 puff D: 1 MW ramp [0.6,1.25]sec E: 1 MW ramp [0.6,1.25]sec J: 2 MW ramp [0.6,1.25]sec result: plasma D: ran 8 faults E: ran J: ran 4 faults Run summary 17 shots 5 to get to 7.9 T 3 TF test 1 early disruption Completed scan of He3 and found 15 msec pulse appeared to have the most effective heating. No H-modes were found for up to 5 MW of RF power. The RF performed marginally and the primary problem antennas were D and E. Began an appreviated current scan to see if the performance could be improved. The last shot suggests higher current had better RF operation. |
| Physics Operator Summaries |
| Entered: Jul 7 2004 04:36:49:723PM |
| Author: Dmitri Mossessian |
| MP#203 He3 heating at 8 T SL: Wukitch PO: Mossessian This run requires 8T operation. All required bus work inspections/re-torques should be performed prior to the run. Bus temperatures need to be monitored between shots. Engineering Setup: overnight ECDC in D2, stopping 1-2 hours prior to the run. Power system as on 1030716001: TF PLC current limit at 175kA (we'll change this as the run proceeds) digitizer start at -1.6sec Acoils as on 1040330005 and enabled 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 15 psi of He3 Hybrid Enabled (as is) fill C-side with 30 psi of D2 Hybrid enabled The following gate valves should be enabled, assuming no vacuum problems: ECE, VUV, DNB, PCI, Zbolo-shutter ---------------------------------------------------- Run Plan: We will start with a lower single null 800kA discharge as on 1040330005 (RF fiducial) Raise TF over 6 shots to 8T as follows: Nominal BT hybrid current PLC limit TFstart -------- ------------- ---------- ----------- 5.4 150 175 -1.0 6 170 175 -1.1 6.5 185 190 -1.2 7 200 205 -1.3 7.5 215 220 -1.4 8 230 235 -1.5 ________________________________________________________________ Summary: The field ramping part went as planned. We were able to get to 1 MA, 8 T from shot 1040330005 (1 MA, 5.4 T) without any problems. Maximum field achieved - 8.1 T at TF current of 222 kA (shot 6) We then lowerd TF current to 219 kA to get ~ 7.9 T and ran this field for the rest of the day. We also shortened the pulse length to start rampdown of both Ip and Bt at 1.2 sec. The TF breakers pulled at the very end of shot 6, fixing the problem with fault monitor board that caused that took abot 1.5 hours. On shots 8 plasma disrupted during current rampdown, the same almost happened on shot 10. It turned out that plasma was getting vertically unstable because we did not move the CLEARIN rampdown back together with Ip and it was trying unsuccessfully to keep CLEARIN const while ramping down the current. Moving CLEARIN rampdown to 1.2 sec helped. On shot 11 there were some runaways at the beginning, which we eliminated by adding a little to PG3 puff in segment 1. Some more problems with the breakers had delayed us again and shots 14 and 15 were TF tests. Startup was very reliable for all fields. Total - 17 shots 3 tests 14 plasmas Details: ---------------------------------------------------------------------------- 1040331001 mossessian PHYSICS_OPERATOR Mar 31 2004 10:14:47:716AM . . . . . . . . . . . . . . . . . . . . Plasma. 5.48 T, 1.05 MA. Scope updates are delayed for an obscure reason. Next shot: TF current up to 170 for 6 T. Asked PLC to move TF starting point to -1.1 sec. Leave PLC current limit at 175 for now. ---------------------------------------------------------------------------- 1040331002 mossessian PHYSICS_OPERATOR Mar 31 2004 10:34:02:010AM . . . . . . . . . . . . . . . . . . . . Plasma. 6.2 T. Next shot: Raise TF to 185 for 6.5 T. Move PLC starting point to -1.2 and limit to 190. Start doing He3 puff at 0.3 sec for 5 msec (B-side upper - PG2) ---------------------------------------------------------------------------- 1040331003 mossessian PHYSICS_OPERATOR Mar 31 2004 10:54:15:933AM . . . . . . . . . . . . . . . . . . . . Plasma. 6.68 T Next shot: Raise TF to 200 for 7 T. Move PLC starting point to -1.3 and limit to 205. 5 msec He3 puff. Moved reflectometer window to start at 0.7 sec (was at 1. sec) ----- 1040331004 mossessian PHYSICS_OPERATOR Mar 31 2004 11:12:38:973AM . . . . . . . . . . . . . . . . . . . . Plasma. 7.2 T Next shot: Raise TF to 215 for 7.5 T. Move PLC starting point to -1.4 and limit to 220. 5 msec He3 puff ---------------------------------------------------------------------------- 1040331005 mossessian PHYSICS_OPERATOR Mar 31 2004 11:34:10:226AM . . . . . . . . . . . . . . . . . . . . Plasma. 7.7 T Next shot: Raise TF to 222 for 7.9 T. Move PLC starting point to -1.5 and limit to 230. 5 msec He3 puff ---------------------------------------------------------------------------- 1040331006 mossessian PHYSICS_OPERATOR Mar 31 2004 12:02:08:680PM . . . . . . . . . . . . . . . . . . . . Plasma. 8.1 T Next shot: Lower TF to 219 for 7.9 T. Raise He3 puff to 10 msec Start ramping field and current down at 1.2 sec ---------------------------------------------------------------------------- 1040331006 mossessian PHYSICS_OPERATOR Mar 31 2004 1:27:40:783PM . . . . . . . . . . . . . . . . . . . . 1.5 hour delay due to some problems with TF breaker fault monitor. This is a TF only test pusle. ---------------------------------------------------------------------------- 1040331008 mossessian PHYSICS_OPERATOR Mar 31 2004 1:46:32:843PM . . . . . . . . . . . . . . . . . . . . Plasma. Disrupted at 1.4 sec during Ip/Bt rampdown. Next shot: start current rampdown a little later, make Bt rampdown a little slower to reproduce trends on shot 6 He3 puff up to 15 msec ---------------------------------------------------------------------------- 1040331009 mossessian PHYSICS_OPERATOR Mar 31 2004 2:00:57:626PM . . . . . . . . . . . . . . . . . . . . Plasma. Disrupted at 0.8 sec due to large injection Next shot: repeat ---------------------------------------------------------------------------- 1040331010 mossessian PHYSICS_OPERATOR Mar 31 2004 2:29:41:706PM . . . . . . . . . . . . . . . . . . . . Plasma. We seem to loose control of CLEARIN in the rampdown. It may be because I moved the Ip rampdown earlier while leaving CLEARIN high up to 1.5 sec. Next shot: He puff up to 20 msec. Move CLEARIN rampdown to start at 1.2 sec ---------------------------------------------------------------------------- 1040331011 mossessian PHYSICS_OPERATOR Mar 31 2004 2:53:22:636PM . . . . . . . . . . . . . . . . . . . . Plasma. Runaways at the beginning. Next shot: He puff up to 25 msec. Increase PG3 puff in segment 1 to max ---------------------------------------------------------------------------- 1040331012 mossessian PHYSICS_OPERATOR Mar 31 2004 3:08:09:266PM . . . . . . . . . . . . . . . . . . . . Plasma. No runaways. Next shot: He puff back to 15 msec. ---------------------------------------------------------------------------- 1040331013 mossessian PHYSICS_OPERATOR Mar 31 2004 3:36:13:986PM . . . . . . . . . . . . . . . . . . . . Plasma. He level did not change from previous shot, although the change was certainly loaded in PCS Next shot: He puff remains 15 msec. Ip up 1. -> 1.2 MA ---------------------------------------------------------------------------- 1040331013 mossessian PHYSICS_OPERATOR Mar 31 2004 3:53:32:120PM . . . . . . . . . . . . . . . . . . . . Next shot will be 50 kA TF test, necessary after some fixing done on the breaker fault protection board ---------------------------------------------------------------------------- 1040331014 mossessian PHYSICS_OPERATOR Mar 31 2004 4:19:06:540PM . . . . . . . . . . . . . . . . . . . . Test failed. Next shot - another TF test ---------------------------------------------------------------------------- 1040331015 mossessian PHYSICS_OPERATOR Mar 31 2004 4:19:18:540PM . . . . . . . . . . . . . . . . . . . . Test OK Next shot - plasma. ---------------------------------------------------------------------------- 1040331016 mossessian PHYSICS_OPERATOR Mar 31 2004 4:33:34:540PM . . . . . . . . . . . . . . . . . . . . Plasma. Good 1.2 MA, 8T shot, RF brings core Te to 5 keV. Next shot - no PCS changes ---------------------------------------------------------------------------- 1040331017 mossessian PHYSICS_OPERATOR Mar 31 2004 4:51:16:380PM . . . . . . . . . . . . . . . . . . . . Plasma. Last shot . . . . . . . . . . . . . |
| Session Leader Comments | |||
| Mar 31 2004 10:48:57:353AM | Steve Wukitch | Run Plan: We will start with a lower single null 1 MA discharge as on 1040330005 (RF fiducial) 1. Raise TF over 6 shots to 8T as follows: Nominal BT hybrid current PLC limit TFstart -------- ------------- ---------- ----------- 5.4 150 175 -1.0 6 170 175 -1.1 6.5 185 190 -1.2 7 200 205 -1.3 7.5 215 220 -1.4 8 230 235 -1.5 2. Scan 3He concentration by varying the gas puff pulse width (5, 10, 15, 20, 15, 10, 5 msec pulse width with no maintenance level)and monitor plasma response to compare H-mode performance. Continue the scan till mode conversion can be localized. The RF waveform will be ~4MW from 0.6-1.3 sec. 3. Using optimum gas puff, scan RF power [3, 4, and 5 MW] for 0.8 MA, 1 MA, and 1.2 MA. 4. For optimum gas puff, scan plasma density [0.6, 0.8, and 1] at 1 MA. 5. For optimum gas puff, scan outer gap [0.5,1,1.5,2] | |
| Mar 31 2004 10:18:35:417AM | 1040331001 | Steve Wukitch | 001 Fiducial (1 MA, BT~5.4 T, nl04~0.85) D: 1 MW [0.6,1.3]sec E: 1 MW [0.6,1.3]sec J: 2 MW [0.6,1.3]sec result: plasma - H-mode D: ran 6 faults E: ran 1 fault J: ran 5 faults next shot: 6 T |
| Mar 31 2004 10:39:41:370AM | 1040331002 | Steve Wukitch | 002 Fiducial (1 MA, BT~6 T, nl04~0.85) D: 1 MW [0.6,1.3]sec E: 1 MW [0.6,1.3]sec J: 2 MW [0.6,1.3]sec result: plasma - H-mode 6.2 T D: ran 3 faults E: ran J: ran 2 faults next shot: RF off, 6.5 T |
| Mar 31 2004 10:48:05:180AM | 1040331003 | Steve Wukitch | 003 1 MA, BT~6.5 T, nl04~0.85) D: - MW [0.6,1.3]sec E: - MW [0.6,1.3]sec J: - MW [0.6,1.3]sec result: plasma - 6.7 T next shot: RF off, 7 T |
| Mar 31 2004 11:16:06:140AM | 1040331004 | Steve Wukitch | 004 1 MA, BT~7 T, nl04~0.85) D: - MW [0.6,1.3]sec E: - MW [0.6,1.3]sec J: - MW [0.6,1.3]sec result: plasma - 7.2 T next shot: RF on, 7.5 T |
| Mar 31 2004 11:42:34:247AM | 1040331005 | Steve Wukitch | 005 1 MA, BT~ T, nl04~0.85) D: 1 MW [0.6,1.3]sec E: 1 MW [0.6,1.3]sec J: 2 MW [0.6,1.3]sec result: plasma - H-mode 7.7 T D: ran max faults E: ran J: ran briefly max faults |
| Mar 31 2004 12:01:40:117PM | 1040331006 | Steve Wukitch | 006 1 MA, BT~7.9 T, nl04~0.85), 5 msec He3 puff D: 1 MW ramp [0.6,1.3]sec E: 1 MW ramp [0.6,1.3]sec J: 2 MW ramp [0.6,1.3]sec result: plasma 8.1 T D: ran max faults E: ran max faults J: ran max faults late TF breaker pull prompt, fast density increase with application of RF next shot: increase He3 to 10 msec, decrease TF to 7.9 T |
| Mar 31 2004 01:33:29:737PM | 1040331007 | Steve Wukitch | 007 TF tests |
| Mar 31 2004 02:29:22:443PM | 1040331010 | Steve Wukitch | 010 1 MA, BT~7.9 T, nl04~0.85), 10 msec He3 puff D: 1 MW ramp [0.6,1.25]sec E: 1 MW ramp [0.6,1.25]sec J: 2 MW ramp [0.6,1.25]sec result: plasma D: ran E: ran J: ran 1 fault nl_04 looks fairly wild - wonder if the tile is moving heating looks better next shot: repeat with 20 msec 3He pulse |
| Mar 31 2004 02:44:09:913PM | 1040331011 | Steve Wukitch | 011 1 MA, BT~7.9 T, nl04~0.85), 10 msec He3 puff D: 1 MW ramp [0.6,1.25]sec E: 1 MW ramp [0.6,1.25]sec J: 2 MW ramp [0.6,1.25]sec result: plasma D: ran max faults E: ran 6 faults J: ran heating is not as effect as previous shot next shot: repeat with 25 msec 3He pulse |
| Mar 31 2004 03:13:59:780PM | 1040331012 | Steve Wukitch | 012 1 MA, BT~7.9 T, nl04~0.85), 10 msec He3 puff D: 1 MW ramp [0.6,1.25]sec E: 1 MW ramp [0.6,1.25]sec J: 2 MW ramp [0.6,1.25]sec result: plasma D: ran max faults E: ran max faults J: ran next shot: repeat with 10 msec 3He pulse |
| Mar 31 2004 03:40:16:607PM | 1040331013 | Steve Wukitch | 013 1 MA, BT~7.9 T, nl04~0.85), 10 msec He3 puff D: 1 MW ramp [0.6,1.25]sec E: 1 MW ramp [0.6,1.25]sec J: 2 MW ramp [0.6,1.25]sec result: plasma D: ran max faults E: ran max faults J: ran next shot: increase plasma current to 1.2 MA |
| Mar 31 2004 04:06:22:760PM | 1040331014 | Steve Wukitch | 014 TF test |
| Mar 31 2004 04:18:56:413PM | 1040331015 | Steve Wukitch | 015 TF test |
| Mar 31 2004 04:34:14:980PM | 1040331016 | Steve Wukitch | 016 1 MA, BT~7.9 T, nl04~0.85), 10 msec He3 puff D: 1 MW ramp [0.6,1.25]sec E: 1 MW ramp [0.6,1.25]sec J: 2 MW ramp [0.6,1.25]sec result: plasma D: ran 3 faults E: ran 2 faults J: ran next shot: raise power and make square |
| Physics Operator Comments | |||
| Mar 31 2004 08:43:00:340AM | Dmitri Mossessian | MP#203 He3 heating at 8 T SL: Wukitch PO: Mossessian This run requires 8T operation. All required bus work inspections/re-torques should be performed prior to the run. Bus temperatures need to be monitored between shots. Engineering Setup: overnight ECDC in D2, stopping 1-2 hours prior to the run. Power system as on 1030716001: TF PLC current limit at 175kA (we'll change this as the run proceeds) digitizer start at -1.6sec Acoils as on 1040330005 and enabled 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 15 psi of He3 Hybrid Enabled (as is) fill C-side with 30 psi of D2 Hybrid enabled The following gate valves should be enabled, assuming no vacuum problems: ECE, VUV, DNB, PCI, Zbolo-shutter ---------------------------------------------------- Run Plan: We will start with a lower single null 800kA discharge as on 1040330005 (RF fiducial) Raise TF over 6 shots to 8T as follows: Nominal BT hybrid current PLC limit TFstart -------- ------------- ---------- ----------- 5.4 150 175 -1.0 6 170 175 -1.1 6.5 185 190 -1.2 7 200 205 -1.3 7.5 215 220 -1.4 8 230 235 -1.5 | |
| Mar 31 2004 08:44:49:957AM | Dmitri Mossessian | Load from 1040330005. nl=8.5e19, Ip=1.05 MA - RF fiducial shot at 5.4 T LoadClean. Ready to go. | |
| Mar 31 2004 10:14:47:717AM | 1040331001 | Dmitri Mossessian | Plasma. 5.48 T, 1.05 MA. Scope updates are delayed for an obscure reason. Next shot: TF current up to 170 for 6 T. Asked PLC to move TF starting point to -1.1 sec. Leave PLC current limit at 175 for now. |
| Mar 31 2004 10:34:02:010AM | 1040331002 | Dmitri Mossessian | Plasma. 6.2 T. Next shot: Raise TF to 185 for 6.5 T. Move PLC starting point to -1.2 and limit to 190. Start doing He3 puff at 0.3 sec for 5 msec (B-side upper - PG2) |
| Mar 31 2004 10:54:15:933AM | 1040331003 | Dmitri Mossessian | Plasma. 6.68 T Next shot: Raise TF to 200 for 7 T. Move PLC starting point to -1.3 and limit to 205. 5 msec He3 puff. Moved reflectometer window to start at 0.7 sec (was at 1. sec) |
| Mar 31 2004 11:12:38:973AM | 1040331004 | Dmitri Mossessian | Plasma. 7.2 T Next shot: Raise TF to 215 for 7.5 T. Move PLC starting point to -1.4 and limit to 220. 5 msec He3 puff |
| Mar 31 2004 11:34:10:227AM | 1040331005 | Dmitri Mossessian | Plasma. 7.7 T Next shot: Raise TF to 222 for 7.9 T. Move PLC starting point to -1.5 and limit to 230. 5 msec He3 puff |
| Mar 31 2004 12:02:08:680PM | 1040331006 | Dmitri Mossessian | Plasma. 8.1 T Next shot: Lower TF to 219 for 7.9 T. Raise He3 puff to 10 msec Start ramping field and current down at 1.2 sec |
| Mar 31 2004 01:27:40:783PM | 1040331006 | Dmitri Mossessian | 1.5 hour delay due to some problems with TF breaker fault monitor. This is a TF only test pusle. |
| Mar 31 2004 01:46:32:843PM | 1040331008 | Dmitri Mossessian | Plasma. Disrupted at 1.4 sec during Ip/Bt rampdown. Next shot: start current rampdown a little later, make Bt rampdown a little slower to reproduce trends on shot 6 He3 puff up to 15 msec |
| Mar 31 2004 02:00:57:627PM | 1040331009 | Dmitri Mossessian | Plasma. Disrupted at 0.8 sec due to large injection Next shot: repeat |
| Mar 31 2004 02:29:41:707PM | 1040331010 | Dmitri Mossessian | Plasma. We seem to loose control of CLEARIN in the rampdown. It may be because I moved the Ip rampdown earlier while leaving CLEARIN high up to 1.5 sec. Next shot: He puff up to 20 msec. Move CLEARIN rampdown to start at 1.2 sec |
| Mar 31 2004 02:53:22:637PM | 1040331011 | Dmitri Mossessian | Plasma. Runaways at the beginning. Next shot: He puff up to 25 msec. Increase PG3 puff in segment 1 to max |
| Mar 31 2004 03:08:09:267PM | 1040331012 | Dmitri Mossessian | Plasma. No runaways. Next shot: He puff back to 15 msec. |
| Mar 31 2004 03:36:13:987PM | 1040331013 | Dmitri Mossessian | Plasma. He level did not change from previous shot, although the change was certainly loaded in PCS Next shot: He puff remains 15 msec. Ip up 1. -> 1.2 MA |
| Mar 31 2004 03:53:32:120PM | 1040331013 | Dmitri Mossessian | Next shot will be 50 kA TF test, necessary after some fixing done on the breaker fault protection board |
| Mar 31 2004 04:19:06:540PM | 1040331014 | Dmitri Mossessian | Test failed. Next shot - another TF test |
| Mar 31 2004 04:19:18:540PM | 1040331015 | Dmitri Mossessian | Test OK Next shot - plasma. |
| Mar 31 2004 04:33:34:540PM | 1040331016 | Dmitri Mossessian | Plasma. Good 1.2 MA, 8T shot, RF brings core Te to 5 keV. Next shot - no PCS changes |
| Mar 31 2004 04:51:16:380PM | 1040331017 | Dmitri Mossessian | Plasma. Last shot |
| Engineering Operator Comments | ||||
| Shot | Time | Type | Status | Comment |
| 1 | 09:56:32:380AM | Plasma | Ok | |
| 2 | 10:16:46:253AM | Plasma | Ok | |
| 3 | 10:38:52:590AM | Plasma | Ok | |
| 4 | 11:03:22:443AM | Plasma | Ok | |
| 5 | 11:26:42:737AM | Plasma | Ok | |
| 6 | 11:51:54:487AM | Plasma | Ok | TF type 1 flt after shot ended |
| 7 | 01:17:45:933PM | Test | Ok | 50 KA test |
| 8 | 01:30:05:413PM | Plasma | Ok | |
| 9 | 01:52:32:763PM | Plasma | Ok | |
| 10 | 02:15:13:550PM | Plasma | Ok | |
| 11 | 02:38:02:650PM | Plasma | Ok | |
| 12 | 03:01:54:423PM | Plasma | Ok | |
| 13 | 03:25:22:243PM | Plasma | Ok | |
| 14 | 03:53:43:637PM | Test | Bad | 50KA TF test, comm fault |
| 15 | 04:16:53:500PM | Test | Ok | 50KA TF only |
| 16 | 04:25:40:053PM | Plasma | Ok | |
| 17 | 04:48:32:340PM | Plasma | Ok | |