| Miniproposals | ||||||||||
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| Operators | |
| Session leader(s): | Naoto Tsujii |
| Physics operator(s): | Yijun Lin |
| Engineering operator(s): | Andy Pfeiffer,Gary Dekow,Bill Byford |
| Engineering Operator Run Comment |
| automatically entered by signon - please replace with real comment |
| Session Leader Plans |
| Entered: Oct 28 2010 10:53:32:053AM |
| Author: Naoto Tsujii |
| Run plan: 1101029
MP606: Measurements of Mode Converted Waves in D-H Plasmas with Phase Contrast Imaging Bt: 5.6-6.5 T Ip: 0.8 MA nl04 ~ 0.6-0.8e20 m^-2 H puff Working Gas Species: D2 Boronization Requested: No Standard ECDC Overnight Diagnostics: Standard profile measurements, PCI, ECE (6-6.5 T), CNPA -- The goal is to get mode conversion measurements at high core H fraction that we did not get naturally with wall fueling. The toroidal field will be increased to keep the hybrid resonance close to the axis at higher concentrations. Try to go to as high concentration as possible as the antennas permit (n_H/n_e ~50%, ~6.5 T). -- 1. Try to reproduce the results from 1101015 (4-5 shots) Start from shot 1101015022 (0.8 MA, 5.6 T, nl04 = 0.8, USN). RF waveforms: D:0.6-0.9 s, E:0.9-1.2 s, J:1.2-1.5 s, 0.5 MW (1) D:0.6-1.5 s, 1.0 MW (2) Raise the field to 5.77 T. Repeat the waveform (2). 2. Concentration scan Start H puff. Raise the field to 6.0 T. Try to get to the highest concentration first, and work our way down. Use the waveform (1). Do a few 1 MW, full-length shots along the way, as well as LSN. Bt to keep hybrid resonance around 78.0 MHz - 0.70 m 80.5 MHz - 0.68 m, 5(-10)% - 5.6 T 20% - 5.9 T 30% - 6.2 T 40% - 6.4 T 50% - 6.6 T (6.5 T ok). |
| Physics Operators Plans |
| Entered: Oct 28 2010 11:26:14:560AM |
| Author: Yijun Lin |
| 1101029: MP606, ICRF Mode conversion waves measurement in D-H plasmas using PCI (with H2 puff)
PO: Yijun Lin, SL: Naoto Tsujii ------------------ Engineering Setup ----------------- (**********Special gas puff request: H2 from B-side-upper**********) (**********High field operation, TF PLC limit to 185 kA************) Run begins at 09:00 and ends at 17:00 Power systems as on: 1101015022, EXCEPT TF PLC Current Limit set to 185kA (for 6.5 T operation) Acoil: +Dtop -Dbot -Jtop +Jbot (standard) Hybrid Enabled 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 6 psi H2, and Hybrid enabled (PG2) (SPECIAL REQUEST FOR THIS RUN) fill B-main (C-side) with 40 psi D2 Hybrid enabled (PG3) leave NINJA as DISABLED Enable gate-valves and shutters: ECE, VUV, HiREX Sr, Xeus Leave z-bolo shutter as is (should be open) Torvac gatevalve toggle (yes/no): no Boronization: no Overnight ECDC: yes ICRF: YES (all transmitters) LH: no Cryopump: No DNB: No overnight ECDC Gas Setup Gas: D2, 2.0e-4 Torr sweep: 44/45/103 cm scan: 20/120 s ------------------------- PO-plan: ------------------------- Part 1. Reload shot 1101015022 (5.8 T, 0.8 MA, nl target = 0.9e20 m^-2). Part 2. Raise field to 5.77 T, repeat Part 3. Start H2 puff. Field to 6 T. H2 puff from 0.2 sec, lasts 50 ms. Monitor H/D Raise H2 puff shot by shot until H/(H+D) ~ 50%. Adjust B field if necessary. Part 4. Reduce H2 puff, and let the H/D level drop. |
| Session Leader Summaries |
| Entered: Oct 29 2010 05:14:17:737PM |
| Author: Naoto Tsujii |
| Started from 0.8 MA, 5.6 T, nl04 = 0.8, USN (repeat of 1101015022), 0.5 MW. Observed fluctuations were 5 - 10 times smaller this time. Increasing the D antenna power to 1.0 MW increased the signal, opposite of 1101015. D at 5.77 T, which has the same resonance location as J at 5.6 T, did not see much reduction in the fluctuation. However, 5.6 T did not show any reduction this time, and this doesn't say too much. Started H puff from shot 5, but barely any change in the H fraction at the beginning. Starting from shot 14, we got n_H/n_e above 0.2 up to 0.28. Fluctuation intensity did not change very much, while the signal width got significantly larger, which is expected from full-wave simulations. No electron (ECE) or H absorption (CNPA) could be seen at this high concentration at a 1.0 MW power level. Stop H puff at shot 23 and let it come down for the rest of the shot. n_H/n_e ~ 0.17 (PCI) at the end of the run. |
| Physics Operator Summaries |
| Entered: Oct 29 2010 05:08:31:727PM |
| Author: Yijun Lin |
| A successful run. Most parts in the SL-plan were accomplished.
By puffing H2 at 12 psi (B-side-upper) from 0.2 to 1.5 sec, we achieved H/(H+D) around 30%, and the level came back down slowly. At the end of the run, the value from H_alpha/(D_alpha+H_alpha) was about 15% Score card: 33 plasma attempts 30 full-length plasmas 3 fizzles. 0 disruption. |
| Session Leader Comments | |||
| Oct 29 2010 09:27:10:460AM | 1101029002 | Naoto Tsujii | Repeat of shot 1101015007. Fluctuations are 5-10 times weaker this time. |
| Oct 29 2010 09:57:24:740AM | 1101029003 | Naoto Tsujii | Again, different from 1101015. Fluctuations are stronger this time. They actually increased compared to 0.5 MW. |
| Oct 29 2010 09:57:45:470AM | 1101029004 | Naoto Tsujii | Fluctuations decreased moving from 5.6 -> 5.77 T. Probably just the field pattern difference. |
| Oct 30 2010 11:55:19:080AM | 1101029006 | Naoto Tsujii | 100 ms puff. Not much increase in the H fraction yet (~0.07). |
| Oct 29 2010 11:25:11:640AM | 1101029010 | Naoto Tsujii | Next: nl04 ~ 0.6, H puff 400 ms. Put in gaps between rf pulses for break-in-slope. |
| Oct 29 2010 12:19:19:290PM | 1101029014 | Naoto Tsujii | Finally getting to higher fraction. From PCI ~0.2, spectroscopy ~0.2. |
| Oct 29 2010 12:54:12:747PM | 1101029015 | Naoto Tsujii | H frac, PCI ~0.24, spectroscopy ~0.28. |
| Oct 29 2010 01:49:41:740PM | 1101029019 | Naoto Tsujii | H frac, PCI ~0.28, spectroscopy ~0.34. Starting to deviate from the edge measurement. |
| Oct 29 2010 02:10:06:863PM | 1101029021 | Naoto Tsujii | It doesn't look like we are going to get much higher concentration even by the end of the day. We will start going down in H fraction at this point. |
| Oct 29 2010 03:34:28:180PM | 1101029026 | Naoto Tsujii | H fraction coming down. PCI ~0.19, spectroscopy ~0.13. |
| Oct 29 2010 03:48:16:953PM | 1101029027 | Naoto Tsujii | PCI ~0.2, spectroscopy ~0.2. |
| Physics Operator Comments | |||
| Oct 29 2010 09:13:57:873AM | 1101029001 | Yijun Lin | Load 1101015022 (5.6 T, TF at 157 A in segment 2), Ip 800 kA, nl 0.8e20 m^-2
Leave IC_EF4U at -1300 (although PO yesterday did some minor change on it). Leave pre-puff PG4 at 22 ms (non-cryopump start-up). zero gas puff PG2 (H2, B-side-upper). (H2 bottle and valve ready) TF limit at 185 A (for higher field operation later). ICRF: D,E,J, 0.5 MW, from 0.6-1.5 sec. Load at 29-Oct-2010 08:50:12.00 Open tree /home/ylin/pcs_scratch -1 Open tree done Result: plasma. full length. good breakdown. Next: No DPCS change. change ICRF. J/E/D |
| Oct 29 2010 09:21:41:660AM | 1101029002 | Yijun Lin | request: 5.6 T, 0.8 MA, nl04 = 0.8e20 m^-2, No H2 puff, ICRF J/E/D
result: plasma full length next: Same plasma. ICRF D 1 MW. |
| Oct 29 2010 09:32:39:853AM | 1101029003 | Yijun Lin | request: 5.6 T, 0.8 MA, nl04 = 0.8e20 m^-2, No H2 puff, ICRF D 1 MW
result: plasma full length next: 5.77 T, same RF |
| Oct 29 2010 09:51:39:987AM | 1101029004 | Yijun Lin | request: 5.77 T (TF 161 kA), 0.8 MA, nl04 = 0.8e20 m^-2, No H2 puff, ICRF D 1 MW
result: plasma full length next: H2 puff 50 ms. 6 T, ICRF D/E/J. reduce pre-puff (PG4) by 1 ms. |
| Oct 29 2010 10:04:29:940AM | 1101029005 | Yijun Lin | request: 6.0 T (TF 168 kA), 0.8 MA, nl04 = 0.8e20 m^-2, 50 ms H2 puff, ICRF D/E/J.
result: plasma full length. H/(D+H) ~ 10% A bouncer at start-up. next: H2 puff (PG2 0.3-0.4 sec) 100 ms. 6 T (TF 168 kA), same ICRF. Raise IC_EF4U by 10 A to eliminate the bouncer (BZ0 seems to drift smaller shot by shot). |
| Oct 29 2010 10:18:13:527AM | 1101029006 | Yijun Lin | request: 6.0 T (TF 168 kA), 0.8 MA, nl04 = 0.8e20 m^-2, 100 ms H2 puff, ICRF D/E/J.
result: plasma full length. H/(D+H) ~ 12% good startup. no bouncer. Maybe increasing Bz0 did cure it. next: Reduce outergap 0.005 m (Rcur + 0.0025 m). 200 ms H2 puff (PG2). |
| Oct 29 2010 10:33:59:703AM | 1101029007 | Yijun Lin | request: 6.0 T (TF 168 kA), 0.8 MA, nl04 = 0.8e20 m^-2, 200 ms H2 puff, ICRF D/E/J.
result: plasma full length. H/(D+H) was still about 10%. next: 300 ms H2 puff (PG2). |
| Oct 29 2010 10:44:10:843AM | 1101029008 | Yijun Lin | request: 6.0 T (TF 168 kA), 0.8 MA, nl04 = 0.8e20 m^-2, 300 ms H2 puff (0.3 to 0.6 sec), ICRF D/E/J.
result: plasma full length. H/(D+H) ~ 14%. good startup. next: 400 ms H2 puff (PG2) (0.2-0.6 s) |
| Oct 29 2010 11:08:46:907AM | 1101029009 | Yijun Lin | request: 6.0 T (TF 168 kA), 0.8 MA, nl04 = 0.8e20 m^-2, 400 ms H2 puff (0.2 to 0.6 sec), ICRF D/E/J.
result: plasma full length. H/(D+H) ~ 12%-14%? good startup. next: Increase pressure for B-side-upper from 6 psi to 12 psi. 200 ms H2 puff (0.3s -0.5 s) got warning of when loading: 'error remotely copying ...models to alcdata..' Josh fixed. |
| Oct 29 2010 11:29:16:443AM | 1101029010 | Yijun Lin | Request: 6.0 T (TF 168 kA), 0.8 MA, nl04 = 0.8e20 m^-2, 200 ms H2 puff (0.3 to 0.5 sec, 12 psi), ICRF D/E/J.
Result: plasma full length. H/(D+H) ~ 12-14%. Same as last shot. good startup. next: 400 ms H2 puff (0.2-0.6 s) at 12 psi. Lower density to nl to 0.6e20 m^-02 |
| Oct 29 2010 11:37:33:950AM | 1101029011 | Yijun Lin | Request: 6.0 T (TF 168 kA), 0.8 MA, nl04 = 0.6e20 m^-2, 400 ms H2 puff (0.2 to 0.6 sec, 12 psi), ICRF D/E/J.
Result: plasma full length. H/(D+H) ~ 12 %. Did not budge...? next: Raise B-side-upper pressure to 20 PSI (limit). Same 400 ms H2 puff. |
| Oct 29 2010 11:50:41:417AM | 1101029012 | Yijun Lin | Request: 6.0 T (TF 168 kA), 0.8 MA, nl04 = 0.6e20 m^-2, 400 ms H2 puff (0.2 to 0.6 sec, 20 psi), ICRF D/E/J.
Result: plasma full length. PCI H/(D+H) ~ 14 %. (Still not much H2 in the plasma) (First time Earl's H/(H+D) > 0.1) next: Puff H2 until 1 sec. (0.2-1.0 sec). |
| Oct 29 2010 12:05:33:007PM | 1101029013 | Yijun Lin | Request: 6.0 T (TF 168 kA), 0.8 MA, nl04 = 0.6e20 m^-2, 800 ms H2 puff (0.2 to 1. sec, 20 psi), ICRF D/E/J.
Result: plasma full length. H/(D+H) ~ 20%. (But H/D drops as soon as stop puffing. next: Puff H2 all the way to 1.5 sec. (this is the maxium we can do in a single shot. But since H2 may stay in the wall, a few shots later, we can have higher H level). |
| Oct 29 2010 12:16:28:683PM | 1101029014 | Yijun Lin | Request: 6.0 T (TF 168 kA), 0.8 MA, nl04 = 0.6e20 m^-2, H2 puff (0.2 to 1.5 sec, 20 psi), ICRF D/E/J.
Result: plasma full length. H/(H+D) 23% next: repeat. Raise field to 6.2 T. Hope to get better ICRF. |
| Oct 29 2010 12:31:36:840PM | 1101029015 | Yijun Lin | Request: 6.2 T (TF 174 kA), 0.8 MA, nl04 = 0.6e20 m^-2, H2 puff (0.2 to 1.5 sec, 20 psi), ICRF D/E/J.
Result: plasma full length. H/(H+D) 25-30% next: H2 puff (0.2 to 1 sec) |
| Oct 29 2010 12:47:19:560PM | 1101029016 | Yijun Lin | Request: 6.2 T (TF 174 kA), 0.8 MA, nl04 = 0.6e20 m^-2, H2 puff (0.2 to 1.0 sec, 20 psi), ICRF D/E/J.
Result: plasma full length. H/(H+D) ~ 30% (max) next: puff until 1.5 sec. (Also move fizzle detector to 2.1 sec). |
| Oct 29 2010 01:00:57:403PM | 1101029017 | Yijun Lin | Request: 6.2 T (TF 174 kA), 0.8 MA, nl04 = 0.6e20 m^-2, H2 puff (0.2 to 1.5 sec, 20 psi), ICRF D/E/J.
Result: plasma full length. spectroscopy: H/(H+D) ~ 34% (max) next: repeat. |
| Oct 29 2010 01:19:39:100PM | 1101029018 | Yijun Lin | Request: 6.2 T (TF 174 kA), 0.8 MA, nl04 = 0.6e20 m^-2, H2 puff (0.2 to 1.5 sec, 20 psi), ICRF D/E/J.
Result: plasma full length. spectroscopy: H/(H+D) ~ 36% (max) next: repeat. |
| Oct 29 2010 01:34:35:460PM | 1101029019 | Yijun Lin | Request: 6.2 T (TF 174 kA), 0.8 MA, nl04 = 0.6e20 m^-2, H2 puff (0.2 to 1.5 sec, 20 psi), ICRF D/E/J.
Result: plasma full length. spectroscopy: H/(H+D) ~ 34-45% (max) next: repeat. (change RF) |
| Oct 29 2010 02:05:30:447PM | 1101029021 | Yijun Lin | Request: 6.2 T (TF 174 kA), 0.8 MA, nl04 = 0.6e20 m^-2, H2 puff (0.2 to 1.5 sec, 20 psi), ICRF D/E/J.
Result: plasma. Full length. Spectroscopy H/(H+D) ~ 40% - 30% Next: Shorten pre-puff PG4 by 1 ms to 20 ms. Shorten H2 puff, 0.2 to 0.5 sec. |
| Oct 29 2010 02:17:01:200PM | 1101029022 | Yijun Lin | Request: 6.2 T (TF 174 kA), 0.8 MA, nl04 = 0.6e20 m^-2, H2 puff (0.2 to 0.5 sec, 20 psi), ICRF D/E/J.
Result: plasma. Full length. Spectroscopy H/(H+D) ~ 50%-40% Next: 0 H2 puff, and see how much H/D we get. |
| Oct 29 2010 02:35:29:237PM | 1101029023 | Yijun Lin | Request: 6.2 T (TF 174 kA), 0.8 MA, nl04 = 0.6e20 m^-2, H2 puff (0 sec, 20 psi), ICRF D/E/J.
Result: plasma. Full length. Spectroscopy H/(H+D) ~ 20% Next: Lower B field to 6 T. No H2 puff. |
| Oct 29 2010 02:56:02:033PM | 1101029024 | Yijun Lin | Request: 6.0 T (TF 168 kA), 0.8 MA, nl04 = 0.6e20 m^-2, H2 puff (0 sec, 20 psi), ICRF D/E/J.
Result: plasma. Full length. Spectroscopy H/(H+D) is coming down slowly. Next: repeat. |
| Oct 29 2010 03:12:36:487PM | 1101029025 | Yijun Lin | Request: 6.0 T (TF 168 kA), 0.8 MA, nl04 = 0.6e20 m^-2, H2 puff (0 sec, 20 psi), ICRF D/E/J.
Result: plasma. Full length. Spectroscopy H/(H+D) is coming down slowly. Next: repeat. |
| Oct 29 2010 03:28:45:383PM | 1101029026 | Yijun Lin | Request: 6.0 T (TF 168 kA), 0.8 MA, nl04 = 0.6e20 m^-2, H2 puff (0 sec, 20 psi), ICRF D/E/J.
Result: plasma. Full length. Spectroscopy H/(H+D) is coming down slowly. Next: Reduce pre-puff PG4 1 ms to 19 ms. Lower field to 5.9 T. |
| Oct 29 2010 03:46:51:457PM | 1101029027 | Yijun Lin | Request: 5.9 T (TF 165 kA), 0.8 MA, nl04 = 0.6e20 m^-2, H2 puff (0 sec, 20 psi), ICRF D/E/J.
Result: plasma. Full length. Spectroscopy H/(H+D) is coming down slowly. Next: repeat. no dpcs change. |
| Oct 29 2010 04:01:48:197PM | 1101029028 | Yijun Lin | Request: 5.9 T (TF 165 kA), 0.8 MA, nl04 = 0.6e20 m^-2, H2 puff (0 sec, 20 psi), ICRF D/E/J.
Result: plasma. Full length. Spectroscopy H/(H+D) is coming down slowly. Next: repeat. no dpcs change. |
| Oct 29 2010 04:16:44:303PM | 1101029029 | Yijun Lin | Request: 5.9 T (TF 165 kA), 0.8 MA, nl04 = 0.6e20 m^-2, H2 puff (0 sec, 20 psi), ICRF D/E/J.
Result: plasma. Full length. H/(H+D) seems to have been stuck at about 15% (PCI) Next: 5.8 T (TF 162 kA) |
| Oct 29 2010 04:37:08:577PM | 1101029030 | Yijun Lin | Request: 5.8 T (TF 162 kA), 0.8 MA, nl04 = 0.6e20 m^-2, No H2 puff, ICRF D/E/J.
Result: fizzle. late breakdown. (It has been rather late on shot 29 also). Next: Lower IC_EF4U by 10 kA (-1280A to -1290A), Raise PG4 puff by 1 ms to 20 ms. |
| Oct 29 2010 04:47:07:497PM | 1101029031 | Yijun Lin | Request: 5.8 T (TF 162 kA), 0.8 MA, nl04 = 0.6e20 m^-2, No H2 puff, ICRF D/E/J.
Result: shorty. died at .35 ms. Something came in. Breakdown ok. Next: repeat. Increase PG3 puff slightly. (move the 40 V point from 0.01 sec to 0.015 sec) |
| Oct 29 2010 04:59:19:927PM | 1101029032 | Yijun Lin | Request: 5.8 T (TF 162 kA), 0.8 MA, nl04 = 0.6e20 m^-2, No H2 puff, ICRF D/E/J.
Result: plasma full length. Next: repeat. no dpcs change. Run J antenna phase scan. |
| Oct 29 2010 05:08:21:330PM | 1101029033 | Yijun Lin | Request: 5.8 T (TF 162 kA), 0.8 MA, nl04 = 0.6e20 m^-2, No H2 puff, ICRF J only.
Result: plasma full length. End of run |
| Engineering Operator Comments | ||||
| Shot | Time | Type | Status | Comment |
| 1 | 09:01:22:447AM | Plasma | Ok | |
| 2 | 09:15:14:920AM | Plasma | Ok | |
| 3 | 09:27:46:260AM | Plasma | Ok | |
| 4 | 09:40:36:020AM | Plasma | Ok | |
| 5 | 09:54:45:760AM | Plasma | Ok | |
| 6 | 10:09:04:537AM | Plasma | Ok | |
| 7 | 10:23:51:870AM | Plasma | Ok | |
| 8 | 10:38:38:980AM | Plasma | Ok | |
| 9 | 10:53:22:613AM | Plasma | Ok | |
| 10 | 11:08:48:033AM | Plasma | Ok | |
| 11 | 11:26:47:587AM | Plasma | Ok | |
| 12 | 11:40:56:470AM | Plasma | Ok | |
| 13 | 11:54:13:157AM | Plasma | Ok | |
| 14 | 12:08:21:450PM | Plasma | Ok | |
| 15 | 12:22:39:850PM | Plasma | Ok | |
| 16 | 12:38:17:290PM | Plasma | Ok | |
| 17 | 12:53:08:537PM | Plasma | Ok | |
| 18 | 01:09:24:713PM | Plasma | Ok | |
| 19 | 01:26:41:097PM | Plasma | Ok | |
| 20 | 01:43:56:050PM | Plasma | Ok | |
| 21 | 01:56:21:807PM | Plasma | Ok | |
| 22 | 02:10:35:130PM | Plasma | Ok | |
| 23 | 02:27:46:627PM | Plasma | Ok | |
| 24 | 02:49:13:917PM | Plasma | Ok | |
| 25 | 03:05:24:353PM | Plasma | Ok | |
| 26 | 03:22:10:820PM | Plasma | Ok | |
| 27 | 03:40:32:187PM | Plasma | Ok | |
| 28 | 03:55:46:723PM | Plasma | Ok | |
| 29 | 04:10:57:027PM | Plasma | Ok | |
| 30 | 04:26:42:090PM | Plasma | Ok | |
| 31 | 04:39:15:060PM | Plasma | Ok | |
| 32 | 04:52:05:213PM | Plasma | Ok | |
| 33 | 05:04:14:410PM | Plasma | Ok | |
| System Availability | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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