| Miniproposals | ||||||||||
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| Operators | |
| Session leader(s): | Bruce Lipschultz |
| Physics operator(s): | Earl Marmar |
| Engineering operator(s): | Andy Pfeiffer,Bill Byford,Ed Fitzgerald,Andy Pfeiffer |
| Engineering Operator Run Comment |
| automatically entered by signon - please replace with real comment |
| Session Leader Plans |
| Entered: Apr 5 2005 05:15:16:743PM |
| Author: Bruce Lipschultz |
| Session leader: Lipschultz (standin for Lin)
PHysop: Marmar Continuation of MP417 - "Plasma performance, boronization and ICRF heating effectiveness with high-Z antenna guards and all metal surface" Aims: 1) Density scan at constant RF power. 2) Optimize H-mode 2a) Puff into H-mode. (Had one promising shot. 1050401001, starting puff at 0.9 sec. More to explore) 2b) Raise Ip to 1.2 MA (ELM free H-mode?) 3) Measure wall pumping with RF Specifics: gate valve closure on the first 2 shots, ECDC thereafter. Switch back in step 3 NINJA puff setup (fill to 10 PSI D2) B-side lower to 3 PSI Ne (not enabled to begin with) 1) start out at low density using earlier shot (1050401001). RF power 3MW, nl04=0.7e20 ~ 2 shots to optimize startup and RF (gate valve closed) ~ 3 shots, raising the target density to nl04=1.4e20 (ECDC on between shots from this point, NINJA from this point at around 1 sec). RF from 0.65 to 1.5 seconds. 2) Optimize H-mode 2a) reproduce 1050401019 and then increase the puff at the time used and lengthen it out (2-3 shots). Try shifting it earlier to the ELM free period (2 shots). Try increasing the gap to the antenna and poloidal limiters (2 shots). 2b) Raise current to 1.2 MA with best condition from 2a. (2 shots) 2c) puff Ne to reduce cool edge and reduce Mo source? 3) Take optimal shot from 2a or 2b, reload it to see if it reproduces, and try with gate valve closed (no ECDC) 3a - same density (2 shots) 3b - vary density from nl04 0f 0.7 to 1.4e20 (4 shots) 4) If time allows then we will try the B density measurement through gas puffing and no RF |
| Physics Operators Plans |
| Entered: Apr 5 2005 05:56:07:667PM |
| Author: Earl Marmar |
| MP#417 pre-boronization evaluation of all-metal ...
SL: Lipschultz PO: Marmar Engineering setup: Overnight ECDC in D2, bake at 60C Run begins at 09:00 ends at 17:00 EDT Power systems as on 1050405002 A-coil in standard configuration (+Dtop -Dbot -Jtop +Jbot) Transmitters 1,2,3,4 in RUN-ON by 08:30 Gas setup: fill B-top with 6 psi D2 hybrid enabled (PG4) fill B-side lower as it was at the end of the run 1050405 disabled (PG1) leave B-side upper with He3 Hybrid disabled (PG2) fill B-main (C-side) with 40 psi D2 Hybrid enabled (PG3) NINJA puff setup (fill to 10 PSI D2) Enable the following gate valves (assuming no vacuum problems): ECE, VUV, Z-bolo shutter _________________________________________ Plan: Continuation of MP417 - "Plasma performance, boronization and ICRF heating effectiveness with high-Z antenna guards and all metal surface" Aims: 1) Density scan at constant RF power. 2) Optimize H-mode 2a) Puff into H-mode. (Had one promising shot. 1050401001, starting puff at 0.9 sec. More to explore) 2b) Raise Ip to 1.2 MA (ELM free H-mode?) 3) Measure wall pumping with RF Specifics: gate valve closure on the first 2 shots, ECDC thereafter. Switch back in step 3 NINJA puff setup (fill to 10 PSI D2) 1) start out at low density using earlier shot (1050401001). RF power 3MW, nl04=0.7e20 ~ 2 shots to optimize startup and RF (gate valve closed) ~ 3 shots, raising the target density to nl04=1.4e20 (ECDC on between shots from this point, NINJA from this point at around 1 sec). RF from 0.65 to 1.5 seconds. 2) Optimize H-mode 2a) reproduce 1050401019 and then increase the puff at the time used and lengthen it out (2-3 shots). Try shifting it earlier to the ELM free period (2 shots). Try increasing the gap to the antenna and poloidal limiters (2 shots). 2b) Raise current to 1.2 MA with best condition from 2a. (2 shots) 3) Take optimal shot from 2a or 2b, reload it to see if it reproduces, and try with gate valve closed (no ECDC) 3a - same density (2 shots) 3b - vary density from nl04 0f 0.7 to 1.4e20 (4 shots) 4) If time allows then we will try the B density measurement through gas puffing and no RF |
| Session Leader Summaries |
| Entered: Apr 6 2005 05:47:17:550PM |
| Author: Bruce Lipschultz |
| Session leader: Lipschultz (standin for Lin)
Physop: Marmar Engineering: many Continuation of MP417 - "Plasma performance, boronization and ICRF heating effectiveness with high-Z antenna guards and all metal surface" Aims: 1) Density scan at constant RF power. 2) Optimize H-mode 2a) Puff into H-mode. (Had one promising shot. 1050401001, starting puff at 0.9 sec. More to explore) 2b) Raise Ip to 1.2 MA (ELM free H-mode?) 3) Measure wall pumping with RF The machine ran pretty smoothly today. We did not learn very much new infromation about RF heating in an unboronized machine. The time was mainly useful from the point of view of properly documenting the plasma performance and what affects it for pre-boronization discharges. 1) In the density scan higher densities led to improved stored energy but not a strong effect. The radiated power may have dropped slightly (2-> 1.7 MW) with increasing density. 2) The puffing of gas into H-mode did tend to keep the stored energy up. Increasing it and moving it around in the pulse did not seem to help. It did lead to problems with the J antenna because the puffing raised the midplane pressure. Raising the current to 1.2 MA (shot 12 - 24) raised the stored energy only slightly. Shot 13 seems to be an anomaly in that the RF power dropped to 2 MW and yet the stored energy was as high as the 3 MW casees (125 kJ). Ne puffing did not lower the Mo source rate nor help the H-modes. 3) Shot 26 and onward had the gate valve closed (along with shots 1-2). We got a range in densities with 1 MA plasmas leading to a range in pressures in the machine after the shot (3-10 mT). The mass 4/3 ratio varied being the highest at high density. We need further analysis to look at the wall pumping. |
| Physics Operator Summaries |
| Entered: Apr 6 2005 05:45:15:917PM |
| Author: Earl Marmar |
| A reasonable run from the physop point of view. We managed 5 minutes of ECDC after most plasma shots, and got 31 total cycles for the day. Startup was pretty good, with 25 plasmas. Fizzles started after the first neon puff (shot 17), but it's not clear if this was causal. Bz was drifting up, and the fill needed attention. We got into a fizzle/plasma alternating sequence, but managed to get 6 plasmas in a row to end the day. Two shots had early disruptions (1 and 3) probably related to trying to get the density up too fast for the rate of current rise, resulting in early marfes. Early hard x-rays were a problem on most shots. Shot 11 was a no-power cycle because of a TF permissive problem. Shot 19 was a dud because there was no prefill puff; probably a PLC state communication problem. Scorecard: Plasmas 25 Fizzles 4 no gas dud 1 no power cycle 1 Total data cycles 31 |
| Session Leader Comments | |||
| Apr 6 2005 05:28:51:857PM | 1050406001 | Bruce Lipschultz | Shot disrupted at 0.7 s.
nebar=1.15e20 before RF, density rising quickly before disruption. PRF ~ 3MW Stored energy approaching 0.1 MJPRAD approaching 3.8 MW when it disrupts Not sure what killed this one - usual Mo influx with RF. There is alot of Ti and F as well before the RF. Try again but at higer density Gate valve closed Mass 4/3 peak ratio after shot was about 3.5e-8/0.47e-8 ~ 7 9-10 mT after shot No higher mass peaks no ECDC |
| Apr 6 2005 05:30:55:710PM | 1050406002 | Bruce Lipschultz | Shot fine
nebar=1.7e20 before RF, no H-mode. PRF ~ 3MW Stored energy approaching 0.1 MJ, PRAD approaching 2 MW. Try again bto clean up the hard x-rays Gate valve closed Mass 4/3 peak ratio after shot was about 1.2e-8/0.2e-8 ~ 6 3 mT after shot No higher mass peaks |
| Apr 6 2005 09:41:37:920AM | 1050406003 | Bruce Lipschultz | Shot disrupted at 0.4 sec
|
| Apr 6 2005 10:37:13:500AM | 1050406004 | Bruce Lipschultz | Shot fine
nebar=1.7e20 before RF, in and out of H-mode. PRF ~ 3MW, tripping Stored energy approaching 0.1 MJ, PRAD approaching 2 MW. |
| Apr 6 2005 10:19:45:150AM | 1050406005 | Bruce Lipschultz | Shot fine
nebar=1.44e20 before RF, in and out of H-mode. PRF ~ 3MW for a while till E dropped out Stored energy approaching 0.1 MJ, PRAD approaching 2 MW. H/(H+D) ~ 6% ECDC on between shots |
| Apr 6 2005 10:35:25:610AM | 1050406006 | Bruce Lipschultz | Shot fine
nebar=1.35e20 before RF, steadier H-mode. PRF ~ 3MW Stored energy ~0.1 MJ, PRAD ~ 2 MW. H/(H+D) ~ 7% ECDC on between shots |
| Apr 6 2005 10:53:47:237AM | 1050406007 | Bruce Lipschultz | Shot fine
nebar=1.35e20 before RF, steadier H-mode. PRF ~ 3MW Stored energy ~0.1 MJ, PRAD ~ 2 MW. H/(H+D) ~ 7% 5 minutes ECDC on between shots Next shot nl04 of 1.1 and gas puff during H-mode to try and improve it (step 2 of the SL plan) |
| Apr 6 2005 11:11:43:290AM | 1050406008 | Bruce Lipschultz | Shot good
Try to optimize by puffing (starting at 0.8 for 0.4 s) during H-mode nebar=2e20 before RF PRF ~ 3MW till J drops out at 1.2 s Stored energy going above 0.1 MJ, PRAD ~ 1.7 MW. H/(H+D) ~ 4% (dropped due to higher density?) 5 minutes ECDC on between shots Next shot shorter gas puff and delayed, try and optimize RF |
| Apr 6 2005 11:33:52:160AM | 1050406009 | Bruce Lipschultz | Shot good
Try to optimize by puffing (starting at 0.8 for 0.4 s) during H-mode nebar=2e20 before RF PRF ~ 3MW till J drops out at 1.2 s Stored energy going to 0.11 MJ, PRAD ~ 1.7-2 MW in ELM free, fropping to 1 MW with the ELMy H-mode later on.. H/(H+D) ~ 4% 5 minutes ECDC on between shots |
| Apr 6 2005 11:46:40:123AM | 1050406010 | Bruce Lipschultz | Shot good
Try to optimize by puffing (starting at 0.85 for 0.25 s) during H-mode nebar=2e20 before RF PRF ~ 3MW till J drops out at 1.2 s (due to rising midplane pressure) Stored energy going to 0.11 MJ, PRAD ~ 1.7-2 MW in ELM free, dropping to 1 MW with the ELMy H-mode (and lower power) later on.. H/(H+D) ~ 4% 5 minutes ECDC on between shots |
| Apr 6 2005 12:15:44:910PM | 1050406012 | Bruce Lipschultz | Shot good at 1.2 MA
D2 puffing (starting at 1. for 0.25 s) during H-mode nebar=2e20 before RF PRF ~ 3MW till they all fault at ~1.2 s Stored energy going to 0.115 MJ, PRAD ~ 2 MW . Still only very short ELM-free periods. H/(H+D) ~ 55% 5 minutes ECDC on between shots |
| Apr 6 2005 12:37:19:807PM | 1050406013 | Bruce Lipschultz | Shot good at 1.2 MA - unusual becasue we dropped 1/3 of the RF and increased stored energy
D2 puffing (starting at 1. for 0.25 s) during H-mode nebar=2.35e20 before RF. However the density pumped out after the turn on of the RF. PRF ~ 2MW (D did not go) Stored energy going to 0.125 MJ, PRAD ~ 1.6 MW . Still only very short ELM-free periods. H/(H+D) ~ 3.7% 5 minutes ECDC on between shots |
| Apr 6 2005 12:54:15:490PM | 1050406014 | Bruce Lipschultz | Shot ok at 1.2 MA but RF had problems
Try again 5 minutes ECDC on between shots |
| Apr 6 2005 01:18:44:763PM | 1050406015 | Bruce Lipschultz | Shot ok at 1.2 MA but RF had problems
On to puffing with Ne to try and reduce Mo levels 5 minutes ECDC on between shots |
| Apr 6 2005 01:33:13:023PM | 1050406016 | Bruce Lipschultz | Shot ok at 1.2 MA but RF had problems
Ne not properly enabled, try again. On to puffing with Ne to try and reduce Mo levels 5 minutes ECDC on between shots |
| Apr 6 2005 02:18:42:133PM | 1050406017 | Bruce Lipschultz | Shot ok at 1.2 MA but RF had problems
Ne not properly enabled, try again. On to puffing with Ne to try and reduce Mo levels 5 minutes ECDC on between shots |
| Apr 6 2005 02:18:53:590PM | 1050406018 | Bruce Lipschultz | no plasma |
| Apr 6 2005 02:19:10:100PM | 1050406019 | Bruce Lipschultz | no plasma |
| Apr 6 2005 02:35:18:840PM | 1050406020 | Bruce Lipschultz | good plasma, problems with D antenna
Some Ne (McPherson report) but does not show up on SXR nebar=2e20 before RF, some ELM-free H-modes PRF ~ 3, dropping to 2MW Stored energy ~0.12 MJ dropping with RF, PRAD not on (shutter closed) H/(H+D) ~ 6% ECDC on between shots |
| Apr 6 2005 03:02:08:143PM | 1050406021 | Bruce Lipschultz | fizzle |
| Apr 6 2005 03:07:53:263PM | 1050406022 | Bruce Lipschultz | Shot good at 1.2 MA
Ne puff did not seem to lower ther Mo or help the H-mode. In fact the Ne puff during the H-mode appears to knock it out of H-mode nebar=2.e20 before RF. Stored energy going to 0.12 MJ, PRAD ~ 1.6 MW . Still only very short ELM-free periods. H/(H+D) ~ 6% 5 minutes ECDC on between shots |
| Apr 6 2005 03:08:06:957PM | 1050406023 | Bruce Lipschultz | fizzle |
| Apr 6 2005 03:36:43:997PM | 1050406024 | Bruce Lipschultz | Shot good at 1.2 MA
No Ne puff for comparison nebar=2.e20 before RF. Stored energy going to 0.12 MJ and dropping, PRAD ~ 1.6 MW . Only one ELM-free period. H/(H+D) ~ 6% 5 minutes ECDC on between shots |
| Apr 6 2005 03:39:33:650PM | 1050406025 | Bruce Lipschultz | fizzle |
| Apr 6 2005 04:05:32:353PM | 1050406026 | Bruce Lipschultz | Shot good at 1.0 MA - gate valve closed (step 3)
No Ne puff, no NINJA nebar=1.6e20 before RF, PRF ~ 3MW. Stored energy going to 0.12 MJ and dropping, PRAD ~ 2 MW . H/(H+D) ~ 5% Mass 4/3 peak ratio after shot was about 1.3e-8/0.2e-8 ~ 6.5 5 mT after shot No higher mass peaks no ECDC |
| Apr 6 2005 04:15:51:457PM | 1050406027 | Bruce Lipschultz | Shot good at 1.0 MA - gate valve closed (step 3) only got 2 MW RF
No Ne puff, no NINJA nebar= 2e20 before RF, 1.6e20 during RF and L-mode. PRF ~ 2MW. Stored energy going to 0.12 MJ and dropping, PRAD ~ 2 MW . H/(H+D) ~ 5% Mass 4/3 peak ratio after shot was about 2.35e-8/0.25e-8 ~ 9 7 mT after shot No higher mass peaks no ECDC |
| Apr 6 2005 04:27:35:233PM | 1050406028 | Bruce Lipschultz | Shot good at 1.0 MA - gate valve closed (step 3) only got 2 MW RF (3MW for 75 ms)
No Ne puff, no NINJA nebar= 2e20 before RF, 1.6e20 during RF and L-mode. PRF ~ 2MW. Stored energy going to 0.12 MJ and dropping, PRAD ~ 2 MW . H/(H+D) ~ 5% Mass 4/3 peak ratio after shot was about 2.4e-8/0.25e-8 ~ 9 7 mT after shot No higher mass peaks no ECDC |
| Apr 6 2005 04:52:06:870PM | 1050406029 | Bruce Lipschultz | Shot good at 1.0 MA - gate valve closed (step 3)
No Ne puff, no NINJA nebar= 2.2e20 before RF. PRF ~ 3MW. Stored energy going to 0.11 MJ and dropping, PRAD ~ 2 MW . H/(H+D) ~ 5% Mass 4/3 peak ratio after shot was about 2.6e-8/0.32e-8 ~ 9 8 mT after shot No higher mass peaks no ECDC |
| Apr 6 2005 05:03:15:710PM | 1050406030 | Bruce Lipschultz | Shot good at 1.0 MA - gate valve closed (step 3)
No Ne puff, no NINJA nebar= 1.2e20 before RF. PRF ~ 3MW. Stored energy going to 0.1 MJ and dropping, PRAD ~ 2 MW . H/(H+D) ~ 6% Mass 4/3 peak ratio after shot was about 1.05e-8/0.22e-8 ~ 5 3-4 mT after shot No higher mass peaks no ECDC |
| Apr 6 2005 05:19:41:037PM | 1050406031 | Bruce Lipschultz | Shot good at 1.0 MA - gate valve closed (step 3)
No Ne puff, no NINJA nebar= 2.3e20 before RF. PRF ~ 3MW. Stored energy going to 0.12 MJ and dropping, PRAD ~ 1.8 MW . H/(H+D) ~ 6% Mass 4/3 peak ratio after shot was about 2.3e-8/0.35e-8 ~ 7 7-8 mT after shot No higher mass peaks no ECDC |
| Physics Operator Comments | |||
| Apr 6 2005 09:12:35:650AM | 1050406001 | Earl Marmar | load 1050405011 (for segment 1) tweak early gas (reduce after 35 ms) load segment 2 from 1050401019 reduce nl_04 target to 7e19 change Ip demand to 1.00 MA (from 1.05) turn off segment 3 turn on segment 2 Gate valves closed before and after shot plasma, disrupt at 0.7 seconds; density rise with ICRF, big increase in radiated power |
| Apr 6 2005 09:36:21:920AM | 1050406002 | Earl Marmar | raise nl_04 target to 1e20 plasma most of the way through rampdown a lot of early hards |
| Apr 6 2005 09:45:12:860AM | 1050406003 | Earl Marmar | try to remove the early density lurch decrease prefill puff by 2 msec to 20 msec plasma, early disruption |
| Apr 6 2005 09:57:46:630AM | 1050406004 | Earl Marmar | slow down the density rise in segment 2 plasma, ramps all the way down many RF trips |
| Apr 6 2005 10:16:28:547AM | 1050406005 | Earl Marmar | Increase right gap by 6 mm (decrease RCUR .003 m) decrease nl_04 target to 9e19 plasma ramping all the way down got the increased outer gap nl_04 was about 8e19 at RF turn-on lost E-port ICRF part way through pulse |
| Apr 6 2005 10:32:13:633AM | 1050406006 | Earl Marmar | ECDC for 5 minute before shot 6 increase outer gap another 4 mm (decrease RCUR .002 m) reduce prefill puff by 2 msec (to 18 msec) decrease nl_04 target to 8e19 plasma good RF dithery H-mode |
| Apr 6 2005 10:54:57:300AM | 1050406007 | Earl Marmar | ECDC for 5 minutes before shot 7 tweak CLEARIN to stop droop in middle of the shot plasma; ramps all the way down left gap stays much more constant still early hards |
| Apr 6 2005 11:11:47:183AM | 1050406008 | Earl Marmar | ECDC for 5 minutes before shot 8 increase nl_04 target to 1.2e20; prop. gain to 0 between 0.8 and 1.2 seconds add PG3 puff (60 volt, from 0.8 to 1.2 seconds) plasma nl_04 ~ 1.0e20 at ICRF turn-on got the puff; J-port tripping after 1.1 sec (high neutral pressure) density rises during ELMy H-Mode |
| Apr 6 2005 11:23:12:970AM | 1050406009 | Earl Marmar | ECDC 5 minutes before shot 9 tweak density rise slightly PG3 puff 70 volt from .85 to 1.1; nl_04 prop gain to 0 during that time plasma early hards marfe during density rise J-port tripping after 1.0 seconds (neutral pressure) |
| Apr 6 2005 11:56:35:840AM | 1050406010 | Earl Marmar | ECDC for 5 minutes before shot 10 bring I_p up faster reduce PG3 puff to 65 volt from .85 to 1.1 seconds plasma 110 kJ (best today), rising very slightly during gas puff |
| Apr 6 2005 11:56:58:770AM | 1050406011 | Earl Marmar | no power cycle; problem with TF permissive |
| Apr 6 2005 12:19:20:253PM | 1050406012 | Earl Marmar | ECDC for 5 minutes after shot 10. No ECDC between no-power cycle (shot 11) and this shot. 1.2 MA 1.2e20 nl_04 target PG3 puff 20 volt from 1.0 to 1.25 seconds Plasma 117 kJ; no obvious effect of gas puff |
| Apr 6 2005 12:36:26:677PM | 1050406013 | Earl Marmar | 5 minutes of ECDC before shot 13 nl_04 target to 1.4e20 PG3 puff to 40 volt from 1.0 to 1.25 seconds plasma D port faulted out; more stored energy (127 kJ); |
| Apr 6 2005 12:47:36:817PM | 1050406014 | Earl Marmar | 5 minutes of ECDC before shot 14 no pcs changes plasma D-port off on purpose J-port faults after 0.86 seconds no H-mode |
| Apr 6 2005 01:01:28:667PM | 1050406015 | Earl Marmar | cell access for TCI before shot 15 12 minutes of ECDC before shot 15 no pcs changes |
| Apr 6 2005 01:24:44:767PM | 1050406016 | Earl Marmar | 5 minutes ECDC before shot 16 nl_04 target to 1.2e20 neon puff (3 PSI, B side lower) PG1 100 volts, 30 msec from .6 to .63 seconds turn off PG3 puff in the middle of the shot; leave nl_04 prop gain on during the shot plasma no neon (physop error; didn't ask for valve enable) many RF trips; short H-modes |
| Apr 6 2005 01:46:34:563PM | 1050406017 | Earl Marmar | 5 minutes ECDC before shot 17 no PCS changes plasma Neon was enabled, and signal send from hybrid; no clear evidence of neon in the plasma many RF trips; multiple H-modes |
| Apr 6 2005 01:58:40:633PM | 1050406018 | Earl Marmar | 5 minutes ECDC before shot 18 increase Ne puff (80 msec, starting at .6 sec) add second Ne puff (60 msec, starting at seconds fizzle; late breakdown; B_z might be a tad high |
| Apr 6 2005 02:07:10:453PM | 1050406019 | Earl Marmar | no ECDC before shot 19 EF4 current 10 amp more negative before t=0 (now -1335 A) add 1msec to prepuff (now 19 msec) dud; no prefill puff (PLC problem?) |
| Apr 6 2005 02:24:32:273PM | 1050406020 | Earl Marmar | no ECDC before shot 20 try again; no pcs changes plasma neon shows up on the McPherson D port ICRF is struggling |
| Apr 6 2005 02:40:34:993PM | 1050406021 | Earl Marmar | 5 minutes ECDC before shot 21 increase neon plenum pressure to 4.9 PSI no pcs changes fizzle |
| Apr 6 2005 03:04:33:330PM | 1050406022 | Earl Marmar | no ECDC before shot 22 reduce prepuff by 1 msec (to 18 msec) plasma got the neon good RF neon seems to make the H-mode worse |
| Apr 6 2005 03:10:00:053PM | 1050406023 | Earl Marmar | ECDC for 5 minutes before shot 23 EF4 10 A more negative (now -1345 A) turn off neon fizzle |
| Apr 6 2005 03:31:43:240PM | 1050406024 | Earl Marmar | no ECDC between 23 (fizzle) and 24 no pcs changes plasma good shot |
| Apr 6 2005 03:38:31:747PM | 1050406025 | Earl Marmar | ECDC for 5 minutes before shot 25 reduce prefill puff by 2 msec to 16 msec Ip to 1.0 MA nl_04 target to 1.0e20 PG3 puff 40 volts from 1.0 to 1.25 s (prop gain to 0 for that time) gate valves closed before and after the shot fizzle |
| Apr 6 2005 03:59:16:390PM | 1050406026 | Earl Marmar | no ECDC after shot 25 (fizzle) no pcs changes plasma |
| Apr 6 2005 04:17:52:947PM | 1050406027 | Earl Marmar | ECDC for 1 minute before shot 27 Gate valves closed before and after shot reduce prepuff by 1 msec to 15 msec nl_04 target to 1.2e20 plasma |
| Apr 6 2005 04:18:29:370PM | 1050406028 | Earl Marmar | no ECDC before shot reduce prefill 1 msec to 15 msec plasma D port trips around the time of the H-mode transition |
| Apr 6 2005 04:48:46:780PM | 1050406029 | Earl Marmar | plasma |
| Apr 6 2005 04:47:00:233PM | 1050406030 | Earl Marmar | nl_04 target to 7e19 plasma |
| Apr 6 2005 05:30:13:813PM | 1050406031 | Earl Marmar | nl_04 target to 1.4e20 eliminate PG3 puff during RF plasma nl_04 at RF turnon ~ 1.2e20 nice RF pulses; type 3 ELMy, H89 ~ 1 |
| Engineering Operator Comments | ||||
| Shot | Time | Type | Status | Comment |
| 1 | 09:08:05:843AM | Plasma | Ok | |
| 2 | 09:22:16:580AM | Plasma | Ok | |
| 3 | 09:36:46:933AM | Plasma | Ok | |
| 4 | 09:51:47:563AM | Plasma | Ok | |
| 5 | 10:05:02:947AM | Plasma | Ok | |
| 6 | 10:19:51:823AM | Plasma | Ok | |
| 7 | 10:36:36:000AM | Plasma | Ok | |
| 8 | 10:58:05:587AM | Plasma | Ok | |
| 9 | 11:14:00:743AM | Plasma | Ok | |
| 10 | 11:32:52:257AM | Plasma | Ok | |
| 11 | 11:49:52:643AM | Plasma | Bad | TF scannner out of sync in INT |
| 12 | 12:03:01:900PM | Plasma | Ok | |
| 13 | 12:19:05:637PM | Plasma | Ok | |
| 14 | 12:36:07:433PM | Plasma | Ok | |
| 15 | 01:02:19:237PM | Plasma | Ok | |
| 16 | 01:17:52:333PM | Plasma | Ok | |
| 17 | 01:34:19:600PM | Plasma | Ok | |
| 18 | 01:49:57:153PM | Plasma | Ok | |
| 19 | 02:03:09:660PM | Plasma | Ok | |
| 20 | 02:15:36:520PM | Plasma | Ok | |
| 21 | 02:34:49:340PM | Plasma | Ok | |
| 22 | 02:47:12:793PM | Plasma | Ok | |
| 23 | 03:03:39:277PM | Plasma | Ok | |
| 24 | 03:16:08:280PM | Plasma | Ok | |
| 25 | 03:32:52:457PM | Plasma | Ok | |
| 26 | 03:45:18:037PM | Plasma | Ok | |
| 27 | 03:59:44:467PM | Plasma | Ok | |
| 28 | 04:12:42:027PM | Plasma | Ok | |
| 29 | 04:25:02:167PM | Plasma | Ok | |
| 30 | 04:40:20:900PM | Plasma | Ok | |
| 31 | 04:53:39:940PM | Plasma | Ok | |