| Miniproposals | ||||||||||
|
| Operators | |
| Session leader(s): | Dmitri Mossessian |
| Physics operator(s): | Ian Hutchinson |
| Engineering operator(s): | Bill Byford,Ed Fitzgerald |
| Engineering Operator Run Comment |
| MP293A mode frequency vs power PO:Hutch SL:Mossessian EO:Fitzgerald/Byfo |
| Session Leader Plans |
| Physics Operators Plans |
| Session Leader Summaries |
| Physics Operator Summaries |
| Entered: Jul 7 2004 04:37:14:537PM |
| Author: To Be Determined |
| Physop Summary 1010731 MP293A QC mode versus power. SL Mossessian PO Hutch Summary _______ Machine ran well. Keeping H/D down called for between shots ECDC. We got 4MW RF into the plasma with the two frequencies. However, the limit was arcing of j-port at the top, which blew away the plasma on many occasions. Practically all disruptions are traceable to RF injections, many of which are observable on the TV. A few ELMy periods were obtained at the highest powers. H-factors below 2 in most cases, so these are not high performance. Scorecard _________ 2 Fizzles. 3 null shots because of MDS/control. 24 plasmas. Details _______ 1010731xxx hutch PHYSICS_OPERATOR Jul 31 2001 8:34:10:490AM . . . . . . . . . . . . . . . . . . . MP 293A QC mode vs power. Cold start. Ip to 1 MA. NL04 to 1.e20 I_TF to 144kA Load. ---------------------------------------------------------------------------- 1010731001 hutch PHYSICS_OPERATOR Jul 31 2001 9:10:30:793AM . . . . . . . . . . . . . . . . . . . . Cycle test only. Breaker pulled before cycle. ---------------------------------------------------------------------------- 1010731002 hutch PHYSICS_OPERATOR Jul 31 2001 9:42:11:670AM . . . . . . . . . . . . . . . . . . . . Plasma. 2.3 MW. 140kJ good EDA plasma. Move RF start to .6s. Increase power. ---------------------------------------------------------------------------- 1010731003 hutch PHYSICS_OPERATOR Jul 31 2001 10:02:18:780AM . . . . . . . . . . . . . . . . . . . . Plasma. 2.8 MW. 150kJ. Temperature ramps down as the shot goes on. Not clear why. Set gas puff during H-mode to 15 from 30. The nl04 feedback is off after 0.75s with just a sustaining V-program. ---------------------------------------------------------------------------- 1010731004 hutch PHYSICS_OPERATOR Jul 31 2001 10:18:12:756AM . . . . . . . . . . . . . . . . . . . . Plasma. No J-port. Li pellet at 1.3s. ---------------------------------------------------------------------------- 1010731005 hutch PHYSICS_OPERATOR Jul 31 2001 10:38:15:476AM . . . . . . . . . . . . . . . . . . . . Plasma Disrupts at .8s. Big injection at .6s ---------------------------------------------------------------------------- 1010731007 hutch PHYSICS_OPERATOR Jul 31 2001 11:17:41:323AM . . . . . . . . . . . . . . . . . . . . Plasma. Multiple H-L. J-port died. ECDC between shots. Ip to .9MA. ---------------------------------------------------------------------------- 1010731008 hutch PHYSICS_OPERATOR Jul 31 2001 11:39:46:686AM . . . . . . . . . . . . . . . . . . . . Plasma Disrupts at 1.4s, but prior to that looks better. Reduce Argon puff. JR had too much! Get it in writing. ---------------------------------------------------------------------------- 1010731009 hutch PHYSICS_OPERATOR Jul 31 2001 11:58:22:353AM . . . . . . . . . . . . . . . . . . . . Plasma. Big gas or particle injection at .4s sends shot off track. Repeat ---------------------------------------------------------------------------- 1010731010 hutch PHYSICS_OPERATOR Jul 31 2001 12:23:59:270PM . . . . . . . . . . . . . . . . . . . . Plasma disrupts at .75s. Killed by J-port top arc. Take fill puff to 20ms from 24ms because DNB plans to open. ---------------------------------------------------------------------------- 1010731011 hutch PHYSICS_OPERATOR Jul 31 2001 12:45:14:820PM . . . . . . . . . . . . . . . . . . . . Fizzle as advertized. Got 0.10 mtorr fill. Too much. Fill puff to 15ms. ---------------------------------------------------------------------------- 1010731012 hutch PHYSICS_OPERATOR Jul 31 2001 1:25:42:680PM . . . . . . . . . . . . . . . . . . . . Plasma. Data lost because of MDS problem. ---------------------------------------------------------------------------- 1010731013 hutch PHYSICS_OPERATOR Jul 31 2001 1:25:56:023PM . . . . . . . . . . . . . . . . . . . . Null shot. MDS messed up. ---------------------------------------------------------------------------- 1010731014 hutch PHYSICS_OPERATOR Jul 31 2001 1:48:57:466PM . . . . . . . . . . . . . . . . . . . . MDS still broken. ---------------------------------------------------------------------------- 1010731015 hutch PHYSICS_OPERATOR Jul 31 2001 1:56:33:690PM . . . . . . . . . . . . . . . . . . . . Fizzle. Puff to 16ms. EF4 to -1305 from -1310A. ---------------------------------------------------------------------------- 1010731016 hutch PHYSICS_OPERATOR Jul 31 2001 2:27:29:526PM . . . . . . . . . . . . . . . . . . . . Plasma. 4MW ICRF but still having H/D rising to .1 through the RF. Lower nl04 to .8. Puff to 15.5ms. ---------------------------------------------------------------------------- 1010731017 hutch PHYSICS_OPERATOR Jul 31 2001 2:52:38:990PM . . . . . . . . . . . . . . . . . . . . Plasma. E-port did not come on. 2.9MW. DNB raises their pressure by a reported 10% Fill puff to 15ms. ICEF4 to -1310A. Nl04 to 0.9 ---------------------------------------------------------------------------- 1010731018 hutch PHYSICS_OPERATOR Jul 31 2001 3:19:54:723PM . . . . . . . . . . . . . . . . . . . . Plasma. 4MW. neutrons 6e13. 170 kJ. nl04 to 1.1e20 nl04 gain to zero at .62s. ECDC positions to rmin=44 rmax=115 r_res=90. Used to be rmax=103 rres=45.NO 115 is too far; reset to 103. Turn off argon. ---------------------------------------------------------------------------- 1010731019 hutch PHYSICS_OPERATOR Jul 31 2001 3:40:40:896PM . . . . . . . . . . . . . . . . . . . . Plasma. Disrupts at .9s. Big injections prior. ---------------------------------------------------------------------------- 1010731020 hutch PHYSICS_OPERATOR Jul 31 2001 4:02:31:933PM . . . . . . . . . . . . . . . . . . . . Plasma Disrupts at .65s. Did not survive the first injection. J-port Top arc identified. Fill to 14ms. ---------------------------------------------------------------------------- 1010731021 hutch PHYSICS_OPERATOR Jul 31 2001 4:27:17:333PM . . . . . . . . . . . . . . . . . . . . Plasma. Disrupts at .78s. Seems to be J-port again. ---------------------------------------------------------------------------- 1010731022 hutch PHYSICS_OPERATOR Jul 31 2001 4:50:47:403PM . . . . . . . . . . . . . . . . . . . . Plasma. Disrupts at .78s. nl04 to 1.0e20 gas puff to 30 V during H-mode. ---------------------------------------------------------------------------- 1010731023 hutch PHYSICS_OPERATOR Jul 31 2001 5:12:59:423PM . . . . . . . . . . . . . . . . . . . . Plasma. 3.4 MW 2e13 neutrons. ---------------------------------------------------------------------------- 1010731024 hutch PHYSICS_OPERATOR Jul 31 2001 5:35:54:116PM . . . . . . . . . . . . . . . . . . . . Plasma. Disrupts due to a big injection at .724s D-port top arcs. J-port even more convincing. ECDC r_res to 60. ---------------------------------------------------------------------------- 1010731025 hutch PHYSICS_OPERATOR Jul 31 2001 6:13:30:686PM . . . . . . . . . . . . . . . . . . . . Plasma. 3.0MW. Survives Li pellet. 138 kJ. Turn argon back on. ---------------------------------------------------------------------------- 1010731026 hutch PHYSICS_OPERATOR Jul 31 2001 6:24:23:913PM . . . . . . . . . . . . . . . . . . . . Plasma. Injection in the middle but survives. ---------------------------------------------------------------------------- 1010731027 hutch PHYSICS_OPERATOR Jul 31 2001 6:46:10:136PM . . . . . . . . . . . . . . . . . . . . Plasma. RF fired at 1s. Trips at 1.3s with an injection. 3.9 MW. TF current to 140kA. ---------------------------------------------------------------------------- 1010731028 hutch PHYSICS_OPERATOR Jul 31 2001 7:04:42:530PM . . . . . . . . . . . . . . . . . . . . Plasma. Disrupts at 1.13s. 4.7 MW before the catastrophe. Try to increase upper triangularity by lowering ZXu to 3cm and making RXU -3cm. ---------------------------------------------------------------------------- 1010731028 hutch PHYSICS_OPERATOR Jul 31 2001 7:05:55:920PM . . . . . . . . . . . . . . . . . . . . Plasma disrupts at 1.17s. |
| Session Leader Comments | |||
| Jul 31 2001 10:01:04:950AM | 1010731002 | Dmitri Mossessian | Good shot. 2.3 MW of RF, starts at .7 sec, H mode starts at .78 sec QC mode seen on PCI, probes, not reflectometer. Max gradP ~ 1e7, average ~ 7e6. |
| Jul 31 2001 10:09:01:370AM | 1010731003 | Dmitri Mossessian | Good shot. 2.9 MW of RF, starts at .6 sec, H mode starts at .67 sec QC mode seen on PCI, probes, not reflectometer. GradP a little higher than on shot 2, but does not exceed 1e7. |
| Jul 31 2001 10:11:02:573AM | 1010731004 | Dmitri Mossessian | 2 H modes. 2 MW RF (no J). gradP ~ 6e6. QC mode f~120 kHz |
| Jul 31 2001 10:31:02:043AM | 1010731005 | Dmitri Mossessian | EDA, disrupted at 0.8 s due to injection. 3.5 MW of RF, but very poor heating (injection at 0.7 s ?). Only 150 kJ W_mhd, gradP ~ 7e6 |
| Jul 31 2001 10:58:19:553AM | 1010731006 | Dmitri Mossessian | Multiple H mode, first is ELM-free. |
| Jul 31 2001 10:58:53:077AM | 1010731007 | Dmitri Mossessian | Same as shot 6. Go to 0.9 MA to get higher q and EDA. |
| Jul 31 2001 11:29:49:257AM | 1010731008 | Dmitri Mossessian | Good EDA. Steady 90 kHz QC mode. 3.5 MW RF, but heating is poor (H/D climbs up to 10% by the end of H mode). Max gradP ~ 8.5e6 |
| Jul 31 2001 02:25:53:520PM | 1010731016 | Dmitri Mossessian | EDA with some ELMs at the beginning, when P_rad is not too high yet. RF=4 MW. but heating efficiency not too high. |
| Jul 31 2001 02:58:42:833PM | 1010731017 | Dmitri Mossessian | Varying target density to optimize heating. 0.8e20 target for this shot. Similar to shot 16. |
| Jul 31 2001 02:58:54:833PM | 1010731018 | Dmitri Mossessian | Varying target density to optimize heating. 0.9e20 target for this shot. Similar to shot 16 and 17. |
| Jul 31 2001 04:37:35:560PM | 1010731019 | Dmitri Mossessian | Varying target density to optimize heating. 1.1e20 target for this shot. Big injection at ~.7, cold H mode follows. |
| Jul 31 2001 04:38:29:797PM | 1010731021 | Dmitri Mossessian | Similar to 19, disrupted 100 ms after L-H |
| Jul 31 2001 04:38:48:280PM | 1010731022 | Dmitri Mossessian | Same as 21. |
| Jul 31 2001 04:58:44:500PM | 1010731023 | Dmitri Mossessian | Lower n_target to 1e20, doubled puff during RF. Lower RF to 3.5 MW Good long EDA with hints of ELMs at the beginning whenb Te_ped above 400 eV. Injection then cools pedestal and ELMs disappear. |
| Jul 31 2001 05:36:06:490PM | 1010731024 | Dmitri Mossessian | Rised RF 250 kW. Disrupted |
| Jul 31 2001 05:36:49:350PM | 1010731025 | Dmitri Mossessian | 3MW RF, long EDA |
| Jul 31 2001 06:14:18:640PM | 1010731026 | Dmitri Mossessian | 2 MW RF, injections stop EDA, but it recovers. |
| Jul 31 2001 06:34:47:283PM | 1010731027 | Dmitri Mossessian | Try 4 MW RF again, starting at 1 s. H mode survives for 300 ms with 4 MW of RF. Max Te is 600 eV, max gradP ~ 1e7 ELMs seen while Te>400 eV |
| Physics Operator Comments | |||
| Jul 31 2001 08:34:10:490AM | Ian Hutchinson | MP 293A QC mode vs power. Cold start. Ip to 1 MA. NL04 to 1.e20 I_TF to 144kA Load. | |
| Jul 31 2001 09:10:30:793AM | 1010731001 | Ian Hutchinson | Cycle test only. Breaker pulled before cycle. |
| Jul 31 2001 09:42:11:670AM | 1010731002 | Ian Hutchinson | Plasma. 2.3 MW. 140kJ good EDA plasma. Move RF start to .6s. Increase power. |
| Jul 31 2001 10:02:18:780AM | 1010731003 | Ian Hutchinson | Plasma. 2.8 MW. 150kJ. Temperature ramps down as the shot goes on. Not clear why. Set gas puff during H-mode to 15 from 30. The nl04 feedback is off after 0.75s with just a sustaining V-program. |
| Jul 31 2001 10:18:12:757AM | 1010731004 | Ian Hutchinson | Plasma. No J-port. Li pellet at 1.3s. |
| Jul 31 2001 10:38:15:477AM | 1010731005 | Ian Hutchinson | Plasma Disrupts at .8s. Big injection at .6s |
| Jul 31 2001 11:17:41:323AM | 1010731007 | Ian Hutchinson | Plasma. Multiple H-L. J-port died. ECDC between shots. Ip to .9MA. |
| Jul 31 2001 11:39:46:687AM | 1010731008 | Ian Hutchinson | Plasma Disrupts at 1.4s, but prior to that looks better. Reduce Argon puff. JR had too much! Get it in writing. |
| Jul 31 2001 11:58:22:353AM | 1010731009 | Ian Hutchinson | Plasma. Big gas or particle injection at .4s sends shot off track. Repeat |
| Jul 31 2001 12:23:59:270PM | 1010731010 | Ian Hutchinson | Plasma disrupts at .75s. Killed by J-port top arc. Take fill puff to 20ms from 24ms because DNB plans to open. |
| Jul 31 2001 12:45:14:820PM | 1010731011 | Ian Hutchinson | Fizzle as advertized. Got 0.10 mtorr fill. Too much. Fill puff to 15ms. |
| Jul 31 2001 01:25:42:680PM | 1010731012 | Ian Hutchinson | Plasma. Data lost because of MDS problem. |
| Jul 31 2001 01:25:56:023PM | 1010731013 | Ian Hutchinson | Null shot. MDS messed up. |
| Jul 31 2001 01:48:57:467PM | 1010731014 | Ian Hutchinson | MDS still broken. |
| Jul 31 2001 01:56:33:690PM | 1010731015 | Ian Hutchinson | Fizzle. Puff to 16ms. EF4 to -1305 from -1310A. |
| Jul 31 2001 02:27:29:527PM | 1010731016 | Ian Hutchinson | Plasma. 4MW ICRF but still having H/D rising to .1 through the RF. Lower nl04 to .8. Puff to 15.5ms. |
| Jul 31 2001 02:52:38:990PM | 1010731017 | Ian Hutchinson | Plasma. E-port did not come on. 2.9MW. DNB raises their pressure by a reported 10% Fill puff to 15ms. ICEF4 to -1310A. Nl04 to 0.9 |
| Jul 31 2001 03:19:54:723PM | 1010731018 | Ian Hutchinson | Plasma. 4MW. neutrons 6e13. 170 kJ. nl04 to 1.1e20 nl04 gain to zero at .62s. ECDC positions to rmin=44 rmax=115 r_res=90. Used to be rmax=103 rres=45.NO 115 is too far; reset to 103. Turn off argon. |
| Jul 31 2001 03:40:40:897PM | 1010731019 | Ian Hutchinson | Plasma. Disrupts at .9s. Big injections prior. |
| Jul 31 2001 04:02:31:933PM | 1010731020 | Ian Hutchinson | Plasma Disrupts at .65s. Did not survive the first injection. J-port Top arc identified. Fill to 14ms. |
| Jul 31 2001 04:27:17:333PM | 1010731021 | Ian Hutchinson | Plasma. Disrupts at .78s. Seems to be J-port again. |
| Jul 31 2001 04:50:47:403PM | 1010731022 | Ian Hutchinson | Plasma. Disrupts at .78s. nl04 to 1.0e20 gas puff to 30 V during H-mode. |
| Jul 31 2001 05:12:59:423PM | 1010731023 | Ian Hutchinson | Plasma. 3.4 MW 2e13 neutrons. |
| Jul 31 2001 05:35:54:117PM | 1010731024 | Ian Hutchinson | Plasma. Disrupts due to a big injection at .724s D-port top arcs. J-port even more convincing. ECDC r_res to 60. |
| Jul 31 2001 06:13:30:687PM | 1010731025 | Ian Hutchinson | Plasma. 3.0MW. Survives Li pellet. 138 kJ. Turn argon back on. |
| Jul 31 2001 06:24:23:913PM | 1010731026 | Ian Hutchinson | Plasma. Injection in the middle but survives. |
| Jul 31 2001 06:46:10:137PM | 1010731027 | Ian Hutchinson | Plasma. RF fired at 1s. Trips at 1.3s with an injection. 3.9 MW. TF current to 140kA. |
| Jul 31 2001 07:04:42:530PM | 1010731028 | Ian Hutchinson | Plasma. Disrupts at 1.13s. 4.7 MW before the catastrophe. Try to increase upper triangularity by lowering ZXu to 3cm and making RXU -3cm. |
| Jul 31 2001 07:05:55:920PM | 1010731028 | Ian Hutchinson | Plasma disrupts at 1.17s. |
| Engineering Operator Comments | ||||
| Shot | Time | Type | Status | Comment |
| 1 | 09:06:53:350AM | Plasma | Bad | OH-2 Breaker Opened during INIT |
| 2 | 09:24:57:957AM | Plasma | Ok | |
| 3 | 09:39:21:980AM | Plasma | Ok | |
| 4 | 09:59:14:587AM | Plasma | Ok | |
| 5 | 10:17:08:083AM | Plasma | Ok | |
| 6 | 10:35:25:970AM | Plasma | Ok | |
| 7 | 10:49:30:477AM | Plasma | Ok | |
| 8 | 11:12:04:763AM | Plasma | Ok | |
| 9 | 11:34:36:783AM | Plasma | Ok | |
| 10 | 11:57:51:570AM | Plasma | Ok | |
| 11 | 12:21:08:983PM | Plasma | Ok | |
| 12 | 12:43:09:003PM | Plasma | Ok | |
| 15 | 01:46:44:650PM | Test | Ok | |
| 16 | 02:00:02:290PM | Test | Ok | |
| 17 | 02:23:33:127PM | Plasma | Ok | |
| 18 | 02:47:34:713PM | Plasma | Ok | |
| 19 | 03:16:21:920PM | Plasma | Ok | |
| 20 | 03:38:50:127PM | Plasma | Ok | |
| 21 | 04:00:37:630PM | Plasma | Ok | |
| 22 | 04:24:39:483PM | Plasma | Ok | |
| 23 | 04:49:04:257PM | Plasma | Ok | |
| 24 | 05:10:52:980PM | Plasma | Ok | |
| 25 | 05:34:11:987PM | Plasma | Ok | |
| 26 | 05:58:25:480PM | Plasma | Ok | |
| 27 | 06:20:50:453PM | Plasma | Ok | |
| 28 | 06:43:39:147PM | Plasma | Ok | |
| 29 | 07:03:42:780PM | Plasma | Ok | |