| Miniproposals | ||||||||||
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| Operators | |
| Session leader(s): | Yijun Lin |
| Physics operator(s): | Bill Rowan |
| Engineering operator(s): | Sam Pierson,Bill Byford,Ed Fitzgerald |
| Engineering Operator Run Comment |
| MP417 EO Pierson SO Lin PO Rowan |
| Session Leader Plans |
| Entered: Mar 31 2005 03:35:53:007PM |
| Author: Yijun Lin |
| MP 417 (day 3 pre-boronization)
engineering setup: same as 1050330. Gas setup: D2, Kr and Ne. Setup ECDC between shots. Shot sequence (strive to finish part 1 to 5) 1. (6 shots) McPherson survey. constant RF power at 3 MW. nl = 1.1e20 m-2, 1 MA, 5.4 T. (load 1050330003) 2. (4 shots) Density scan at constant RF power. 3 MW RF, 5.4 T, 1 MA, nl scan, 0.7, 0.9, 1.1, 1.3e20 m^-2. 3. (3 shots) RF heating hysteresis. 20 ms 1 MW notch at 40 ms, 70 ms, and 100 ms into the RF pulse. RF power at 3 MW or above. 4. (5 shots) Optimize H-mode. Choose the best parameters from above and repeat. 4a. Puff into H-mode. 4b. Raise Ip to 1.2 MA (ELM free H-mode?) 4c. Vary plasma shape (to be determined). 5. (2 shots) puff Kr into the optimized H-mode. check H-mode degradation. -----Probably we'll have to leave the following to another day----- 6. (2 shots) Inner-wall limited plasma. Kr puff, with/without RF, for bolometry. 7. (4 shots) Inner-wall limited plasma. 3 MW RF. 1 MA, Density scan. nl04 = 0.8, 1.2, 1.6, 2.0, 2.4 e20 m^{-2}. 8. (2 shots) Ne puff, with/without RF, for bolometry. (LSN, 1 MA, 5.4 T, 3 MW RF) 9. (3 shots) puff Kr into upper-null plasmas to check bolometry discrepancy, geometry effects. 10. (3 shots) ECE cutoff for TS calibration at 4 Tesla. Total 34 good shots. |
| Physics Operators Plans |
| Entered: Mar 31 2005 03:57:58:770PM |
| Author: Bill Rowan |
| Engineering Setup for Friday, 1 April 2005 MP #417 Plasma performance, boronization and ICRF heating effectiveness with high-Z antenna guards Session leader: Lin Physics operator: Rowan Overnight ECDC in D2, bake at 60 C. Run Begins at 09:00 and ends at 17:00 Power systems as on 1050330025 May use ECDC between shots A-coils in standard configuration (lock mode suppression) +Dtop -Dbot -Jtop +Jbot (same as 1050316) Gas Setup: fill B-top with 6 psi D2 hybrid enabled (PG4) fill B-side lower with 2 psi Kr Hybrid disabled (PG1) leave B-side upper with He3 Hybrid disabled fill B-main (C-side) with 30 psi D2 Hybrid enabled (PG3) leave J-bot Hybrid disabled (PG2) Neon will be used in B-side lower later in the run. Enable the following: ECE gate valve, Z-bolo shutters VUV gate valve |
| Session Leader Summaries |
| Entered: Apr 1 2005 05:10:09:783PM |
| Author: Yijun Lin |
| Summary:
Completed part 1 of the plan for McPherson survey. Plasmas are well reproducible by ECDC 10 minutes between shots. H/(D+H) starts at about 0.04 then climbs to 0.07 at the end of the RF pulse. Wmhd is at 120 - 130 kJ level, which gives H factor slightly above 1 in most shots. Comparing to pre-boronization shot in 1995, e.g., 951206027, we have similiar stored energy, but at 20% higher RF power (3.1 MW vs. 2.6 MW). Partially completed on densiy scan (No data below nl04 < 1.1e20 m^-2. Shots above this density were basically the same) Tried gas puff into H-mode of part 4. Only got one shot (shot 19). slightly increase, 6 kJ, seen in Wmhd after puff) |
| Physics Operator Summaries |
| Session Leader Comments | |||
| Apr 1 2005 09:21:08:697AM | 1050401001 | Yijun Lin | shot 1 (McPherson survey)
Plasma: Bt 5.4 T, 1.0 MA, nl 1.1e20 m^-2. Prf at 3 MW, [0.6, 1.4] sec. J port 20 ms notch at 1.0 sec. Result: many short H-modes H/D 0.035-0.06 Wmax = 112 kJ, Prf = 3.2 MW. J many faults. ECDC for 10 minutes, then repeat. |
| Apr 1 2005 09:41:34:883AM | 1050401002 | Yijun Lin | shot 2 (McPherson survey)
Plasma: Bt 5.4 T, 1.0 MA, nl 1.1e20 m^-2. Prf at 3 MW, [0.6, 1.4] sec. J port 20 ms notch at 1.0 sec. Result: H-modes. H/(D+H) 0.04 - 0.062 Wmax = 125 kJ, Prf = 3.2 MW. Prad_main = 2.1 MW RF efficiency from dW/dt at 1 sec: 0.75. (H/(D+H) = 0.05) ECDC then repeat. |
| Apr 1 2005 10:17:36:367AM | 1050401003 | Yijun Lin | shot 3(McPherson survey)
Plasma: Bt 5.4 T, 1.0 MA, nl 1.1e20 m^-2. Prf at 3 MW, [0.6, 1.4] sec. J port 20 ms notch at 1.0 sec. Result: H-modes. H/(D+H) 0.035-0.066 Wmax = 122 kJ, Prf = 3.2 MW. Prad_main = 2.2 MW ECDC then repeat. |
| Apr 1 2005 10:38:15:693AM | 1050401004 | Yijun Lin | shot 4(McPherson survey)
Plasma: Bt 5.4 T, 1.0 MA, nl 1.1e20 m^-2. Prf at 3 MW, [0.6, 1.4] sec. J port 20 ms notch at 1.0 sec. Result: H-modes. H/(D+H) 0.035-0.066 Wmax = 118 kJ, Prf = 3.2 MW. Prad_main = 2 MW RF efficiency from dW/dt at 1 sec: 0.75. (H/(D+H) = 0.054) ECDC then repeat. |
| Apr 1 2005 11:06:32:123AM | 1050401005 | Yijun Lin | shot 5 (McPherson survey)
Plasma: Bt 5.4 T, 1.0 MA, nl 1.1e20 m^-2. Prf at 3 MW, [0.6, 1.4] sec. J port 20 ms notch at 1.0 sec. Result: H-modes. H/(D+H) 0.04-0.07 Wmax = 118 kJ, Prf = 3.2 MW. Prad_main = 2 MW RF efficiency from dW/dt at 1 sec: 0.6. (H/(D+H) = 0.06) ECDC then repeat. |
| Apr 1 2005 11:32:23:810AM | 1050401006 | Yijun Lin | shot 6 (McPherson survey)
Plasma: Bt 5.4 T, 1.0 MA, nl 1.1e20 m^-2. Prf at 3 MW, [0.6, 1.4] sec. J port 20 ms notch at 1.0 sec. Result: H-modes. H/(D+H) 0.04-0.074 Wmax = 122 kJ, Prf = 3.2 MW. Prad_main = 2 MW RF efficiency from dW/dt at 1 sec: 0.6. (H/(D+H) = 0.06) (The RF started up faster as programed. next shot will use the usual slow startup.) note H89 reached 1.36 in the first H-mode. ECDC then repeat. |
| Apr 1 2005 12:03:15:717PM | 1050401007 | Yijun Lin | shot 7 (McPherson survey)
Plasma: Bt 5.4 T, 1.0 MA, nl 1.1e20 m^-2. Prf at 3 MW, [0.6, 1.4] sec. J port 20 ms notch at 1.0 sec. Result: H-modes. H/(D+H) 0.04-0.074 Wmax = 126 kJ, Prf = 3.2 MW. Prad_main = 2 MW RF efficiency from dW/dt at 1 sec: 0.6. (H/(D+H) = 0.06) (The RF uses usual slow startup. The shot is rather identical as the last one) Next: raise target density to 1.3e20 m^-2, start density scan |
| Apr 1 2005 12:29:09:403PM | 1050401008 | Yijun Lin | shot 8 (performance vs density, nl 1.3e20)
Plasma: Bt 5.4 T, 1.0 MA, nl 1.3e20 m^-2. Prf at 3 MW, [0.6, 1.4] sec. J port 20 ms notch at 1.0 sec. Result: H-modes. J antenna did not run well. H factor is just above one when D and E were running H/(D+H) from 0.04-0.06 Next repeat. |
| Apr 1 2005 12:50:09:330PM | 1050401009 | Yijun Lin | shot 9 (performance vs density, nl 1.3e20)
Plasma: Bt 5.4 T, 1.0 MA, nl 1.24e20 m^-2. Prf at 3 MW, [0.6, 1.4] sec. J port 20 ms notch at 1.0 sec. Result: H-modes. Wmax = 132 kJ, Prf = 3.2 MW. Prad_main = 2 MW H/(D+H) from 0.034-0.06 Next higher density. |
| Apr 1 2005 01:14:46:240PM | 1050401010 | Yijun Lin | shot 10 (performance vs density, nl 1.4e20)
Plasma: Bt 5.4 T, 1.0 MA, nl 1.2e20 m^-2. (density was not required). Prf at 3 MW, [0.6, 1.4] sec. J port 20 ms notch at 1.0 sec. Result: H-modes. Wmax = 132 kJ, Prf = 3.2 MW. Prad_main = 2 MW H/(D+H) from 0.034-0.06 Next raise density earlier so that we can get 1.4 at 0.6 sec. |
| Apr 1 2005 01:35:38:933PM | 1050401011 | Yijun Lin | fizzle |
| Apr 1 2005 01:45:16:577PM | 1050401012 | Yijun Lin | dud |
| Apr 1 2005 02:13:06:683PM | 1050401013 | Yijun Lin | shot 13
(performance vs density, nl 1.4e20) Plasma: Bt 5.4 T, 1.0 MA, nl 1.5e20 m^-2. Prf at 3 MW, [0.6, 1.4] sec. J port 20 ms notch at 1.0 sec. Result: Big MARFE before RF. Don't know the actual nl should be. Disruption at .95 sec. |
| Apr 1 2005 03:07:41:273PM | 1050401014 | Yijun Lin | fizzle |
| Apr 1 2005 03:18:30:217PM | 1050401015 | Yijun Lin | shot 15 (performance vs density, nl 1.4e20)
Plasma: Bt 5.4 T, 1.0 MA, nl 1.5e20 m^-2. (Got 1.1e20 m^-1) Prf at 3 MW, [0.6, 1.4] sec. J port 20 ms notch at 1 sec. Result: H-modes. Wmax = 128 kJ, Prf = 3.2 MW. Prad_main = 2 MW Next: density to 0.7e20. |
| Apr 1 2005 03:43:54:263PM | 1050401016 | Yijun Lin | shot 16 (performance vs density, nl 0.7e20)
Plasma: Bt 5.4 T, 1.0 MA, (Got 0.6e20 m^-1) Prf at 3 MW, [0.6, 1.4] sec. J port 20 ms notch at 1 sec. Result: Wmax = 91 kJ, Prf= 3.2 MW. Prad_main = 1 MW H/(D+H) from 0.06-0.08. Where did all the power go? (Lmode, Locked-mode?, Zeff high, Density lower limit for H-mode?) Next: 0.9e20 nl. |
| Apr 1 2005 03:49:09:277PM | 1050401017 | Yijun Lin | fizzle |
| Apr 1 2005 04:11:08:257PM | 1050401018 | Yijun Lin | shot 18 dud. (giving up the density scan for now. Try gas puff to H-mode).
Reload shot 8. Puff to H mode at 0.9 sec. |
| Apr 1 2005 04:31:08:750PM | 1050401019 | Yijun Lin | shot 19 (puff into H-mode starting at 0.9 sec).
Plasma: Bt 5.4 T, 1.0 MA, nl 1.2e20 m^-2 Prf at 3 MW, [0.6, 1.4] sec. No more programmed notch. Result: Long H-mode Wmax = 130-120 kJ, Prf = 3. MW. Prad_main = 2 MW H/(D+H) from 0.04-0.08. (puff is noticable from nl data, slightly increase, 6 kJ, seen in Wmhd after the puff) next: puff earlier at 0.7 sec and puff harder. |
| Apr 1 2005 04:45:34:560PM | 1050401020 | Yijun Lin | fizzle |
| Apr 1 2005 05:00:48:710PM | 1050401021 | Yijun Lin | dud |
| Physics Operator Comments | |||
| Apr 1 2005 08:15:34:133AM | Bill Rowan | Load shot 1050330025 Load at 1-Apr-2005 08:14:07.00 | |
| Apr 1 2005 08:40:53:277AM | Bill Rowan | Loaded segment 2 from 105030003 Load at 1-Apr-2005 08:39:11.00 | |
| Apr 1 2005 09:16:49:630AM | 1050401001 | Bill Rowan | Plasma. Working through the mcp scan in the SL plan 10 minutes of ECDC before the next shot. Next shot: Add 2 ms to prefill. Increased the prefill from 18 to 20 ms Seems low at 0.025 mT. The reference shot had a fill of 0.035 mT |
| Apr 1 2005 09:56:21:130AM | 1050401002 | Bill Rowan | Plasma 10 minutes of ecdc before the next shot. Breakdown at 5 ms. Prefill is 0.03 mT h/(d+h)=0.06 ecdc off at 9:45, pressre 1.0e-04 1.5e-06 at 9:53 Next shot: no pcs changesl of 0.035 mT |
| Apr 1 2005 10:22:51:523AM | 1050401003 | Bill Rowan | 003. Plasma pressure was 1.1e-06 just prior to this shot 10 minutes of ecdc before the next shot. 2e-04 @ 14:09 1.5e-06 @ 21:34 Problems with a CPCI engineering card. Slowing data acquisition and analysis. Next shot. No PCS changes |
| Apr 1 2005 10:49:41:643AM | 1050401004 | Bill Rowan | 004 Plasma prefill is back to 0.025 mT. Breakdown drifting to later times. On shot 003, the breakdown was at 5 ms. On this shot, it is 7 ms h/(h+d)=0.055 10 minutes of ecdc before the next shot. Turned off at 16:06. pressure=2e-04 1.7e-06 @ 21:19 Next shot: Add 1 ms to prefill Increased the prefill from 20 ms to 21 ms |
| Apr 1 2005 11:14:02:040AM | 1050401005 | Bill Rowan | Plasma approximately 23 minutes between shots prefill pressure approximately 0.032 mT breakdown back to 4 ms h/(h+d)=0.063 SL elects to continue with ECDC of 10 minutes LH will be firing in the next few shots and will require a cell access before starting ops 10 minutes of ecdc before the next shot. ECDC on approx 5 minutes after the shot ecdc off at 13:45. pressure=2.0e-04 1.8e-06 @ 19:23 Next shot: No PCS changes |
| Apr 1 2005 11:35:31:487AM | 1050401006 | Bill Rowan | 006. Plasma h/(h+d)=0.067 10 minutes of ecdc before the next shot. Cell access after shot 007. Next shot: No pcs changes |
| Apr 1 2005 12:06:58:060PM | 1050401007 | Bill Rowan | 007. Plasma In completing this shot, there was an IGOR problem during INIT. The cycle was completed without power. Shot counter did not increment Cell access after this shot for LH 10 minutes of ecdc before the next shot. h/(h+d)=0.060 Next shot: Nel_04 increased. Demand was at 1.2 yielding 1.1. Demand increased to 1.4 |
| Apr 1 2005 12:27:44:027PM | 1050401008 | Bill Rowan | Plasma nl_04 = 1.24e+20 First shot in the density scan. The impurity scan was completed on shot 007. 10 minutes of ecdc before the next shot h/(h+d)=0.045 Next shot: repeat |
| Apr 1 2005 12:53:05:190PM | 1050401009 | Bill Rowan | Plasma LH starts on this shot @ 1.45 s and for a duration of 10 ms. 10 minutes of ecdc before the next shot. H/(d+h)=0.045 Next shot: increase nl_04 by 0.1e+20 |
| Apr 1 2005 01:14:36:473PM | 1050401010 | Bill Rowan | Plasma nl_04=1.19e+20 10 minutes of ecdc before the next shot. Next shot. Bring the density up earlier |
| Apr 1 2005 01:30:28:120PM | 1050401011 | Bill Rowan | 011. Fizzle No ECDC before the next shot. Next shot. No PCS changes. |
| Apr 1 2005 01:44:43:530PM | 1050401012 | Bill Rowan | 012. Dud Next shot. Reduced prefill by 2 ms from 21 ms to 19 ms |
| Apr 1 2005 01:49:19:560PM | 1050401012 | Bill Rowan | 10 minutes ecdc before the next shot |
| Apr 1 2005 02:49:40:527PM | 1050401013 | Bill Rowan | 013. Plasma Disruption at 0.96 s OH2L problems 10 minutes ecdc before the next shot |
| Apr 1 2005 03:04:21:830PM | 1050401014 | Bill Rowan | 014. Fizzle Next shot: no ecdc. No pcs changes |
| Apr 1 2005 03:18:29:420PM | 1050401015 | Bill Rowan | 015. Plasma Next shot: No ECDC before the next shot. Nl_04 reduced. Demand is 0.7e+20 |
| Apr 1 2005 03:35:57:223PM | 1050401016 | Bill Rowan | Plasma. Disruption at 0.9879 s Next shot: ECDC for 10 minutes. Nl_04 increased. Demand is 0.9e+20 |
| Apr 1 2005 03:50:33:637PM | 1050401017 | Bill Rowan | 017. Fizzle Next shot: no ecdc. No pcs changes. |
| Apr 1 2005 04:10:18:227PM | 1050401018 | Bill Rowan | 018. Dud 10 minutes ECDC before the next shot. Next shot. Reload shot 008. Puff during the H-Mode. |
| Apr 1 2005 04:10:49:740PM | 1050401018 | Bill Rowan | ECDC before the next shot. |
| Apr 1 2005 04:26:49:213PM | 1050401019 | Bill Rowan | 019. Plasma Next shot. Increase puff during the H-mode ECDC before the next shot. |
| Apr 1 2005 04:45:04:263PM | 1050401020 | Bill Rowan | 020. Fizzle Next shot. No PCS changes. No ECDC before the next shot. |
| Apr 1 2005 04:58:03:693PM | 1050401021 | Bill Rowan | 021. Dud Next shot. Increase prefill by 1 ms. |
| Engineering Operator Comments | ||||
| Shot | Time | Type | Status | Comment |
| 1 | 09:05:33:260AM | Plasma | Ok | |
| 2 | 09:31:29:350AM | Plasma | Ok | |
| 3 | 09:58:57:333AM | Plasma | Ok | |
| 4 | 10:25:55:163AM | Plasma | Ok | |
| 5 | 10:51:30:927AM | Plasma | Ok | |
| 6 | 11:19:39:347AM | Plasma | Ok | |
| 7 | 11:54:44:930AM | Plasma | Ok | |
| 8 | 12:16:36:743PM | Plasma | Ok | |
| 9 | 12:38:04:047PM | Plasma | Ok | |
| 10 | 01:02:05:937PM | Plasma | Ok | |
| 11 | 01:25:37:583PM | Plasma | Ok | |
| 12 | 01:39:27:290PM | Plasma | Ok | |
| 13 | 02:03:41:287PM | Plasma | Ok | |
| 14 | 02:59:01:113PM | Plasma | Ok | |
| 15 | 03:11:29:847PM | Plasma | Ok | |
| 16 | 03:24:06:177PM | Plasma | Ok | |
| 17 | 03:46:10:900PM | Plasma | Ok | |
| 18 | 03:58:57:560PM | Plasma | Ok | |
| 19 | 04:20:51:707PM | Plasma | Ok | |
| 20 | 04:41:23:597PM | Plasma | Ok | |
| 21 | 04:54:00:710PM | Plasma | Ok | |
| 22 | 05:06:22:300PM | Plasma | Ok | |