Miniproposals

Miniproposal: 218 Date Filed: 1/13/1999 Title: Impurity Transport Coefficient Profiles in EDA H-mode First Author: John Rice Session Leader: John Rice (shots 1-24)

Engineering Operator Run Comment

MP#218 Irby/Silva

Session Leader Plans

Physics Operators Plans

Session Leader Summaries

Entered: Jul 7 2004 03:49:22:257PM

Author: To Be Determined

Run summary for 991029, MP218, Impurity Transport Coefficient Profiles in EDA H-mode The purpose of this run was to determine the profiles of the impurity diffusion coefficient and convection velocity during EDA H-mode. Complete radial brightness profiles for He-like, Li-like and Be-like calcium lines were obtained, in addition to a few time histories for Na-like calcium and Li-like fluorine, following a sequence of CaF2 injections. Bolometer and edge x-ray profiles were also collected. This should allow for a complete characterization of the impurity transport coefficient profiles. Unfortunately, these were not very good EDA H-modes, with H factors slightly above 1, since the walls were not boronized and the molybdenum and total radiated power levels were very high.

Physics Operator Summaries

Entered: Jul 7 2004 04:37:09:850PM

Author: To Be Determined

Physop Summary for Friday, 991029: Impurity Transport Profiles, MP218 SL: Rice EO: Cochran, Dekow, Silva PO: Irby Run began at 08:00 and ended at 16:00 Setup power supplies from shot 990924005 (0.8 MA, 5.4 T, flattop to 1.5 s, extended Bt flattop at 50 kA), EXCEPT MOVE FIZZLE DETECTOR OFF TIME TO 1.7 s Following a D2 backfill to 500 Torr for edge TS calibration we did ECDC from 22:00 to 06:00 in D2 at 2.e-4 Torr 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 10 psi of H2 Hybrid DISABLED fill C-side with 30 psi of D2 Hybrid enabled No argon, enabled ECE, VUV, and pellet injector Summary: The run went extremely well from the machine operation point-of- view with 24 plasmas out of 24 attempts (one early disruption on shot 991029023). The RF performed painlessly and consistently except for the first shot of the day. Tweeks were made in the outer gap to increase the antenna loading and eliminate the trips associated with an overvoltage at the antenna. A tweek was needed early in the run of CLEARIN to keep improve rampdown. A 16 minute PLC timer could have replaced the PO after the first few shots. An interesting finding was that the TF ramp put in for the ECE seemed to have resulted in RF faults. The ramp took the TF current from -150 to -158 kA. Changing the ramp to -150 to -142 kA seems to have fixed the fault and actually reduced the reflected power. The major physics goals of mp218 were accomplished though with less than ideal EDAs compared to the 990924 run. The earlier run had both more RF power and probably better boronization. Problems: . still have drift in TCI CO2 laser alignment . No #1 RF for first shot because of blown chip in screen current rollback board. Score: 24 shot cycles 24 plasmas 1 early disruption 0 fizzles or duds ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- 991029001 irby PHYSICS_OPERATOR Oct 29 1999 8:20:48:013AM . . . . . . . . . . . . . . . . . . . . Loaded 990924005 into PCS Did cold start rtnode -- data loaded, A matrix responds rtnode -- data loaded, M matrix responds rtnode -- data loaded, PID matrix responds RT_NODE Done Changed TF programming to provide the 50kA backporch: time ka ----------- 1.513 -150. 1.662 -50. 3.700 -50 4.010 0 Load clean basepressure 2.5e-7 just before shot Plasma: Disrupts at 1.636 Time (ms): 0 5 10 25 ---------------------------------------- Ip (kA): -3.2777 -18.7612 -31.7063 -93.7093 dIp/dt (kA/ms): -1.5203 -2.7849 -3.4228 -5.3232 pressure (mTorr): 0.0539 0.0539 0.0551 0.0493 Bz0 (mT): 4.3374 5.7504 8.9979 21.1405 Br0 (mT): 0.7435 -0.5345 -0.2898 -0.6096 Bz0 a little high, but a great startup so don't mess with it. No power from #2: Lost #2 screen rollback chip again No power from #1 ---------------------------------------------------------------------------- 991029002 irby PHYSICS_OPERATOR Oct 29 1999 8:46:52:623AM . . . . . . . . . . . . . . . . . . . . RCUR from 0.669 to 0.672: outer gap was 1.7 cm Plasma: Lost it at 1.66 seconds Outer gap okay now Time (ms): 0 5 10 25 ---------------------------------------- Ip (kA): -3.2547 -23.9300 -34.2677 -104.0700 dIp/dt (kA/ms): -1.7736 -2.7894 -3.4205 -6.3343 pressure (mTorr): 0.0570 0.0577 0.0570 0.0521 Bz0 (mT): 4.5499 8.0049 9.6915 22.9456 Br0 (mT): 1.0544 -0.0752 -0.2843 0.0139 May be forced to adjust bz0 ---------------------------------------------------------------------------- 991029003 irby PHYSICS_OPERATOR Oct 29 1999 9:11:15:950AM . . . . . . . . . . . . . . . . . . . . Adjusted late RCUR to fall less quickly during ramp down EF4 to -1280 from -1270 to help with bz0 basepressure at 9.8e-7 Torr Plasma to rampdown, 98kJ, backporch on TF 79MB Resistance at 3.5 and 3.6 seconds: 1.64557 1.57397 Time (ms): 0 5 10 25 ---------------------------------------- Ip (kA): -3.2547 -18.7612 -36.8521 -106.6314 dIp/dt (kA/ms): -1.7736 -3.5473 -3.6740 -6.9677 pressure (mTorr): 0.0590 0.0590 0.0577 0.0510 Bz0 (mT): 4.2544 7.3012 8.3925 24.1365 Br0 (mT): 0.5170 -1.2484 -1.2840 -0.3806 Bz0 a little lower, but Br0 lower ---------------------------------------------------------------------------- 991029004 irby PHYSICS_OPERATOR Oct 29 1999 9:29:07:233AM . . . . . . . . . . . . . . . . . . . . No PCS changes for this shot Plasma to 1.7 seconds Time (ms): 0 5 10 25 ---------------------------------------- Ip (kA): -3.2547 -18.7612 -36.8521 -106.6314 dIp/dt (kA/ms): -1.7736 -3.5473 -3.6740 -6.9677 pressure (mTorr): 0.0590 0.0590 0.0577 0.0510 Bz0 (mT): 4.2544 7.3012 8.3925 24.1365 Br0 (mT): 0.5170 -1.2484 -1.2840 -0.3806 79MB Resistance at 3.5 and 3.6 seconds: 1.64504 1.55128 ---------------------------------------------------------------------------- 991029005 irby PHYSICS_OPERATOR Oct 29 1999 9:50:41:403AM . . . . . . . . . . . . . . . . . . . . Added TF tweak for Amanda: -150 to -158 at 1 seconds -158 to -150 at 1.12 seconds basepressure before shot: 1.1e-6 Torr Plasma: 1.87 seconds, nice rampdown, 90 kJ, RF a littler lower than shot 2 79MB Resistance at 3.5 and 3.6 seconds: 1.56566 1.51045 Time (ms): 0 5 10 25 ---------------------------------------- Ip (kA): -3.2547 -21.3456 -34.2677 -104.0700 dIp/dt (kA/ms): -1.9003 -3.4229 -3.7984 -7.4745 pressure (mTorr): 0.0590 0.0590 0.0603 0.0515 Bz0 (mT): 4.0402 7.3268 8.4272 23.3743 Br0 (mT): 0.6671 -0.1754 -1.7642 -0.5199 No changes to startup, but 1 mT jump in Br0 ---------------------------------------------------------------------------- 991029006 irby PHYSICS_OPERATOR Oct 29 1999 10:36:19:826AM . . . . . . . . . . . . . . . . . . . . ZXL to -.014 from -.008 for Brian, better probe positioning Plasma Time (ms): 0 5 10 25 ---------------------------------------- Ip (kA): -3.2777 -23.9530 -31.6833 -104.0470 dIp/dt (kA/ms): -2.0293 -3.2916 -3.7995 -6.8412 pressure (mTorr): 0.0596 0.0610 0.0590 0.0521 Bz0 (mT): 3.7602 7.1996 8.6702 21.7658 Br0 (mT): -0.0350 -0.3878 -1.8585 -1.3341 ---------------------------------------------------------------------------- 991029007 irby PHYSICS_OPERATOR Oct 29 1999 10:30:39:123AM . . . . . . . . . . . . . . . . . . . . Change RCUR from 0.672 to 0.6725 CLEARIN to -.018 from -.013 at 1.709 seconds --- may help vertical stability Plasma: 83kJ, rampdown better Time (ms): 0 5 10 25 ---------------------------------------- Ip (kA): -3.2777 -23.9300 -31.6833 -106.6314 dIp/dt (kA/ms): -2.0270 -3.2916 -3.9295 -7.2223 pressure (mTorr): 0.0590 0.0583 0.0596 0.0533 Bz0 (mT): 3.6247 6.0926 8.9362 22.2887 Br0 (mT): -0.3068 -1.1218 -1.1474 -1.1715 79MB Resistance at 3.5 and 3.6 seconds: 1.58935 1.58634 Took RCUR the wrong way for the antenna guys ---------------------------------------------------------------------------- 991029008 irby PHYSICS_OPERATOR Oct 29 1999 11:01:21:326AM . . . . . . . . . . . . . . . . . . . . Increase outer gap by 2mm for better antenna coupling: RCUR to 0.6715 from 0.6725 Asked Andy to drop setpoint for CC_OUTSIDE to -185C from -180C Plasma for 1.87 seconds, good EDA, 85 kJ 79MB Resistance at 3.5 and 3.6 seconds: 1.57661 1.54527 Time (ms): 0 5 10 25 ---------------------------------------- Ip (kA): -3.2547 -23.9530 -36.8751 -114.4076 dIp/dt (kA/ms): -1.9026 -3.8029 -3.9250 -6.8399 pressure (mTorr): 0.0583 0.0590 0.0596 0.0527 Bz0 (mT): 4.1373 7.4753 8.3720 23.1276 Br0 (mT): 0.4584 -1.0231 -1.9312 -0.4246 ---------------------------------------------------------------------------- 991029009 irby PHYSICS_OPERATOR Oct 29 1999 11:31:07:090AM . . . . . . . . . . . . . . . . . . . . RF thinks the TF waggle is causing them to trip out, so we took the -158 plateau to -142. Plasma: 1.87 seconds, 86 kJ 79MB Resistance at 3.5 and 3.6 seconds: 1.63348 1.61371 Time (ms): 0 5 10 25 ---------------------------------------- Ip (kA): -3.2777 -18.7612 -31.6833 -106.6544 dIp/dt (kA/ms): -1.5202 -3.0382 -4.3073 -7.2234 pressure (mTorr): 0.0583 0.0583 0.0590 0.0521 Bz0 (mT): 3.4986 5.2837 6.6742 22.5158 Br0 (mT): 0.1927 -0.8585 -0.6622 -1.1393 TF waggle fixes trips we think. ---------------------------------------------------------------------------- 991029010 irby PHYSICS_OPERATOR Oct 29 1999 11:47:26:983AM . . . . . . . . . . . . . . . . . . . . No PCS changes Plasma: 1.87 seconds, Nearly lost all power in TCI CO2 laser, a little sooner and we would have lost feedback Time (ms): 0 5 10 25 ---------------------------------------- Ip (kA): -3.2777 -18.7842 -31.6833 -104.0700 dIp/dt (kA/ms): -1.5225 -2.7848 -3.9250 -6.7133 pressure (mTorr): 0.0590 0.0603 0.0596 0.0533 Bz0 (mT): 3.4782 6.3222 7.5152 22.0892 Br0 (mT): 0.0995 -0.6954 -0.8105 -0.8551 79MB Resistance at 3.5 and 3.6 seconds: 1.62349 1.57933 ---------------------------------------------------------------------------- 991029011 irby PHYSICS_OPERATOR Oct 29 1999 12:06:38:810PM . . . . . . . . . . . . . . . . . . . . Increased RCUR again to 0.6730 for more RF loading; gap should decrease by 3 mm Pressure before shot 1.3e-6 Plasma: 1.87 seconds, 86 kJ Time (ms): 0 5 10 25 ---------------------------------------- Ip (kA): -3.2777 -18.7612 -34.2907 -106.6314 dIp/dt (kA/ms): -1.7748 -3.2916 -3.9250 -7.6024 pressure (mTorr): 0.0583 0.0590 0.0583 0.0521 Bz0 (mT): 2.1111 6.2541 7.9838 21.3087 Br0 (mT): -0.1103 -0.7216 -1.7552 -0.5459 Fewer trips on RF with the smaller gap. Lower voltages at the antenna. Confinement worse. ---------------------------------------------------------------------------- 991029012 irby PHYSICS_OPERATOR Oct 29 1999 12:19:32:420PM . . . . . . . . . . . . . . . . . . . . No PCS changes Plasma Time (ms): 0 5 10 25 ---------------------------------------- Ip (kA): -3.2547 -23.9300 -34.2907 -116.9690 dIp/dt (kA/ms): -1.7736 -3.5472 -4.3074 -7.2222 pressure (mTorr): 0.0596 0.0583 0.0590 0.0533 Bz0 (mT): 3.1209 6.4525 8.2795 23.2531 Br0 (mT): 0.0019 -0.5019 -0.6047 -0.8210 79MB Resistance at 3.5 and 3.6 seconds: 1.62033 1.57961 ---------------------------------------------------------------------------- 991029013 irby PHYSICS_OPERATOR Oct 29 1999 12:37:55:246PM . . . . . . . . . . . . . . . . . . . . No PCS changes Plasma: 90 kJ TCI CO2 laser power takes another dive during shot Beautiful, flat, RF pulse 79MB Resistance at 3.5 and 3.6 seconds: 1.63821 1.56658 Time (ms): 0 5 10 25 ---------------------------------------- Ip (kA): -3.2777 -23.9530 -31.6833 -116.9690 dIp/dt (kA/ms): -1.9025 -2.9115 -4.0528 -7.0967 pressure (mTorr): 0.0583 0.0590 0.0590 0.0515 Bz0 (mT): 2.7033 5.0519 7.7079 22.4816 Br0 (mT): 0.2653 -0.4648 -0.5130 -0.5219 ---------------------------------------------------------------------------- 991029014 irby PHYSICS_OPERATOR Oct 29 1999 12:59:39:716PM . . . . . . . . . . . . . . . . . . . . No PCS changes Plasma: 1.87 seconds, 85 kJ 79MB Resistance at 3.5 and 3.6 seconds: 1.58091 1.60877 Time (ms): 0 5 10 25 ---------------------------------------- Ip (kA): -3.2777 -18.7612 -36.8521 -114.3846 dIp/dt (kA/ms): -1.5202 -3.5461 -4.5608 -7.3501 pressure (mTorr): 0.0590 0.0583 0.0590 0.0527 Bz0 (mT): 2.8432 5.8967 6.7177 22.1219 Br0 (mT): 0.1988 -0.5646 -0.8548 -1.3074 Nice RF pulse ---------------------------------------------------------------------------- 991029015 irby PHYSICS_OPERATOR Oct 29 1999 1:27:13:403PM . . . . . . . . . . . . . . . . . . . . No PCS changes Plasma ---------------------------------------------------------------------------- 991029016 irby PHYSICS_OPERATOR Oct 29 1999 1:39:16:373PM . . . . . . . . . . . . . . . . . . . . No PCS changes Plasma: 1.87 seconds, 84 kJ Time (ms): 0 5 10 25 ---------------------------------------- Ip (kA): -3.2547 -21.3686 -34.2677 -114.4076 dIp/dt (kA/ms): -1.7736 -3.0405 -4.3062 -6.9700 pressure (mTorr): 0.0583 0.0583 0.0590 0.0521 Bz0 (mT): 4.1123 7.2391 7.1997 21.5599 Br0 (mT): 0.5748 -0.0765 -0.4573 -0.4574 ---------------------------------------------------------------------------- 991029017 irby PHYSICS_OPERATOR Oct 29 1999 1:58:56:200PM . . . . . . . . . . . . . . . . . . . . No PCS changes Plasma ------------

Entered: Jul 7 2004 04:37:09:880PM

Author: To Be Determined

--------------------------------------------------------------- 991029018 irby PHYSICS_OPERATOR Oct 29 1999 2:07:15:826PM . . . . . . . . . . . . . . . . . . . . No PCS changes Plasma: 1.87 seconds, 87 kJ 79MB Resistance at 3.5 and 3.6 seconds: 1.62822 1.57302 Time (ms): 0 5 10 25 ---------------------------------------- Ip (kA): -3.2547 -23.9300 -34.2677 -104.0700 dIp/dt (kA/ms): -2.0270 -3.8006 -4.0541 -7.3478 pressure (mTorr): 0.0583 0.0583 0.0583 0.0533 Bz0 (mT): 3.6893 6.0341 7.0246 21.4094 Br0 (mT): 0.5623 -0.2142 -0.4161 -0.4807 ---------------------------------------------------------------------------- 991029019 irby PHYSICS_OPERATOR Oct 29 1999 3:08:17:936PM . . . . . . . . . . . . . . . . . . . . No changes to PCS Plasma ---------------------------------------------------------------------------- 991029020 irby PHYSICS_OPERATOR Oct 29 1999 3:07:58:170PM . . . . . . . . . . . . . . . . . . . . No changes to PCS Plasma ---------------------------------------------------------------------------- 991029021 irby PHYSICS_OPERATOR Oct 29 1999 3:07:18:746PM . . . . . . . . . . . . . . . . . . . . No changes to PCS Plasma 79MB Resistance at 3.5 and 3.6 seconds: 1.57880 1.55672 Time (ms): 0 5 10 25 ---------------------------------------- Ip (kA): -3.2547 -23.9300 -31.6833 -114.3846 dIp/dt (kA/ms): -2.0281 -2.7871 -3.5461 -6.7144 pressure (mTorr): 0.0577 0.0583 0.0583 0.0521 Bz0 (mT): 3.2627 5.3647 7.7344 18.9765 Br0 (mT): 0.7683 -0.8041 0.2122 -1.5016 ---------------------------------------------------------------------------- 991029022 irby PHYSICS_OPERATOR Oct 29 1999 3:35:10:000PM . . . . . . . . . . . . . . . . . . . . No changes to PCS basepressure before shot: 1.0e-6 Torr plasma: 1.87 seconds, 88 kJ 79MB Resistance at 3.5 and 3.6 seconds: 1.53516 1.55725 Time (ms): 0 5 10 25 ---------------------------------------- Ip (kA): -3.2547 -23.9300 -36.8521 -106.6314 dIp/dt (kA/ms): -2.0270 -3.7995 -3.8017 -7.0945 pressure (mTorr): 0.0577 0.0577 0.0577 0.0515 Bz0 (mT): 2.5122 5.1758 7.3452 21.3667 Br0 (mT): 0.0897 -0.6865 -0.2794 -1.2418 ---------------------------------------------------------------------------- 991029023 irby PHYSICS_OPERATOR Oct 29 1999 3:59:44:043PM . . . . . . . . . . . . . . . . . . . . No PCS changes Plasma disrupts at 0.3457 seconds, injections and MHD activity Looks like a brick. ---------------------------------------------------------------------------- 991029024 irby PHYSICS_OPERATOR Oct 29 1999 4:02:28:000PM . . . . . . . . . . . . . . . . . . . . No PCS changes Plasma: 1.86 seconds, 87 kJ Time (ms): 0 5 10 25 ---------------------------------------- Ip (kA): -3.2547 -23.9300 -42.0209 -116.9690 dIp/dt (kA/ms): -2.0270 -3.8006 -3.9273 -7.2200 pressure (mTorr): 0.0570 0.0577 0.0564 0.0510 Bz0 (mT): 3.6963 5.9570 6.4917 22.7086 Br0 (mT): 0.3160 -0.6080 -0.6156 -0.8745 79MB Resistance at 3.5 and 3.6 seconds: 1.58511 1.60719 THE END

Session Leader Comments
Oct 29 1999 09:52:23:030AM	991029001	John Rice	L-mode CaF2 inj at .7s
Oct 29 1999 09:52:45:983AM	991029002	John Rice	crappy H-mode CaF2 inj at .8s
Oct 29 1999 09:53:01:623AM	991029003	John Rice	crappy H-mode CaF2 inj at .8s
Oct 29 1999 09:53:35:967AM	991029004	John Rice	good EDA H-mode no CaF2 inj
Oct 29 1999 09:54:03:110AM	991029005	John Rice	good EDA H-mode CaF2 inj at .8 s tau = 98 ms
Oct 29 1999 10:09:50:200AM	991029006	John Rice	good EDA H-mode CaF2 inj at .8 s tau = 68 ms too much
Oct 29 1999 10:27:21:610AM	991029007	John Rice	good EDA H-mode CaF2 inj at .8 s tau = 67 ms 1/2 spot
Oct 29 1999 10:51:15:827AM	991029008	John Rice	good EDA H-mode CaF2 inj at .8 s tau = 82 ms 1/2 spot
Oct 29 1999 11:18:02:653AM	991029009	John Rice	good EDA H-mode CaF2 inj at .8 s tau = 82 ms 1/2 spot
Oct 29 1999 11:37:37:890AM	991029010	John Rice	good EDA H-mode CaF2 inj at .8 s tau = 68 ms 1/2 spot
Oct 29 1999 11:56:46:217AM	991029011	John Rice	shitty EDA H-mode CaF2 inj at .8 s tau = 61 ms 1/2 spot
Oct 29 1999 12:12:50:247PM	991029012	John Rice	EDA H-mode CaF2 inj at .8 s tau = 60 ms 1/2 spot
Oct 29 1999 12:32:41:890PM	991029013	John Rice	EDA H-mode CaF2 inj at .8 s tau = 66 ms 1/2 spot
Oct 29 1999 01:08:33:967PM	991029014	John Rice	EDA H-mode CaF2 inj at .8 s tau = 92 ms 1/2 spot
Oct 29 1999 01:08:43:483PM	991029015	John Rice	EDA H-mode CaF2 inj at .8 s tau = 78 ms 1/2 spot
Oct 29 1999 01:30:26:123PM	991029016	John Rice	EDA H-mode CaF2 inj at .8 s tau = 89 ms 1/2 spot
Oct 29 1999 01:46:33:543PM	991029017	John Rice	EDA H-mode CaF2 inj at .8 s tau = 84 ms 1/2 spot
Oct 29 1999 02:03:14:763PM	991029018	John Rice	EDA H-mode CaF2 inj at .8 s tau = 74 ms 1/2 spot
Oct 29 1999 02:26:46:467PM	991029019	John Rice	EDA H-mode CaF2 inj at .8 s tau = 72 ms 1/2 spot
Oct 29 1999 02:51:24:483PM	991029020	John Rice	EDA H-mode CaF2 inj at .8 s tau = 43 ms 1/2 spot
Oct 29 1999 03:02:29:450PM	991029021	John Rice	EDA H-mode CaF2 inj at .8 s tau = 86 ms 1/2 spot
Oct 29 1999 03:21:51:233PM	991029022	John Rice	EDA H-mode CaF2 inj at .8 s tau = 60 ms 1/2 spot
Oct 29 1999 03:57:44:950PM	991029023	John Rice	disrupted
Oct 29 1999 03:57:34:657PM	991029024	John Rice	EDA H-mode CaF2 inj at .8 s tau = 54 ms 1/2 spot

Physics Operator Comments
Oct 29 1999 08:20:48:013AM	991029001	Jim Irby	Loaded 990924005 into PCS Did cold start rtnode -- data loaded, A matrix responds rtnode -- data loaded, M matrix responds rtnode -- data loaded, PID matrix responds RT_NODE Done Changed TF programming to provide the 50kA backporch: time ka ----------- 1.513 -150. 1.662 -50. 3.700 -50 4.010 0 Load clean basepressure 2.5e-7 just before shot Plasma: Disrupts at 1.636 Time (ms): 0 5 10 25 ---------------------------------------- Ip (kA): -3.2777 -18.7612 -31.7063 -93.7093 dIp/dt (kA/ms): -1.5203 -2.7849 -3.4228 -5.3232 pressure (mTorr): 0.0539 0.0539 0.0551 0.0493 Bz0 (mT): 4.3374 5.7504 8.9979 21.1405 Br0 (mT): 0.7435 -0.5345 -0.2898 -0.6096 Bz0 a little high, but a great startup so don't mess with it. No power from #2: Lost #2 screen rollback chip again No power from #1
Oct 29 1999 08:46:52:623AM	991029002	Jim Irby	RCUR from 0.669 to 0.672: outer gap was 1.7 cm Plasma: Lost it at 1.66 seconds Outer gap okay now Time (ms): 0 5 10 25 ---------------------------------------- Ip (kA): -3.2547 -23.9300 -34.2677 -104.0700 dIp/dt (kA/ms): -1.7736 -2.7894 -3.4205 -6.3343 pressure (mTorr): 0.0570 0.0577 0.0570 0.0521 Bz0 (mT): 4.5499 8.0049 9.6915 22.9456 Br0 (mT): 1.0544 -0.0752 -0.2843 0.0139 May be forced to adjust bz0
Oct 29 1999 09:11:15:950AM	991029003	Jim Irby	Adjusted late RCUR to fall less quickly during ramp down EF4 to -1280 from -1270 to help with bz0 basepressure at 9.8e-7 Torr Plasma to rampdown, 98kJ, backporch on TF 79MB Resistance at 3.5 and 3.6 seconds: 1.64557 1.57397 Time (ms): 0 5 10 25 ---------------------------------------- Ip (kA): -3.2547 -18.7612 -36.8521 -106.6314 dIp/dt (kA/ms): -1.7736 -3.5473 -3.6740 -6.9677 pressure (mTorr): 0.0590 0.0590 0.0577 0.0510 Bz0 (mT): 4.2544 7.3012 8.3925 24.1365 Br0 (mT): 0.5170 -1.2484 -1.2840 -0.3806 Bz0 a little lower, but Br0 lower
Oct 29 1999 09:29:07:233AM	991029004	Jim Irby	No PCS changes for this shot Plasma to 1.7 seconds Time (ms): 0 5 10 25 ---------------------------------------- Ip (kA): -3.2547 -18.7612 -36.8521 -106.6314 dIp/dt (kA/ms): -1.7736 -3.5473 -3.6740 -6.9677 pressure (mTorr): 0.0590 0.0590 0.0577 0.0510 Bz0 (mT): 4.2544 7.3012 8.3925 24.1365 Br0 (mT): 0.5170 -1.2484 -1.2840 -0.3806 79MB Resistance at 3.5 and 3.6 seconds: 1.64504 1.55128
Oct 29 1999 09:50:41:403AM	991029005	Jim Irby	Added TF tweak for Amanda: -150 to -158 at 1 seconds -158 to -150 at 1.12 seconds basepressure before shot: 1.1e-6 Torr Plasma: 1.87 seconds, nice rampdown, 90 kJ, RF a littler lower than shot 2 79MB Resistance at 3.5 and 3.6 seconds: 1.56566 1.51045 Time (ms): 0 5 10 25 ---------------------------------------- Ip (kA): -3.2547 -21.3456 -34.2677 -104.0700 dIp/dt (kA/ms): -1.9003 -3.4229 -3.7984 -7.4745 pressure (mTorr): 0.0590 0.0590 0.0603 0.0515 Bz0 (mT): 4.0402 7.3268 8.4272 23.3743 Br0 (mT): 0.6671 -0.1754 -1.7642 -0.5199 No changes to startup, but 1 mT jump in Br0
Oct 29 1999 10:36:19:827AM	991029006	Jim Irby	ZXL to -.014 from -.008 for Brian, better probe positioning Plasma Time (ms): 0 5 10 25 ---------------------------------------- Ip (kA): -3.2777 -23.9530 -31.6833 -104.0470 dIp/dt (kA/ms): -2.0293 -3.2916 -3.7995 -6.8412 pressure (mTorr): 0.0596 0.0610 0.0590 0.0521 Bz0 (mT): 3.7602 7.1996 8.6702 21.7658 Br0 (mT): -0.0350 -0.3878 -1.8585 -1.3341
Oct 29 1999 10:30:39:123AM	991029007	Jim Irby	Change RCUR from 0.672 to 0.6725 CLEARIN to -.018 from -.013 at 1.709 seconds --- may help vertical stability Plasma: 83kJ, rampdown better Time (ms): 0 5 10 25 ---------------------------------------- Ip (kA): -3.2777 -23.9300 -31.6833 -106.6314 dIp/dt (kA/ms): -2.0270 -3.2916 -3.9295 -7.2223 pressure (mTorr): 0.0590 0.0583 0.0596 0.0533 Bz0 (mT): 3.6247 6.0926 8.9362 22.2887 Br0 (mT): -0.3068 -1.1218 -1.1474 -1.1715 79MB Resistance at 3.5 and 3.6 seconds: 1.58935 1.58634 Took RCUR the wrong way for the antenna guys
Oct 29 1999 11:01:21:327AM	991029008	Jim Irby	Increase outer gap by 2mm for better antenna coupling: RCUR to 0.6715 from 0.6725 Asked Andy to drop setpoint for CC_OUTSIDE to -185C from -180C Plasma for 1.87 seconds, good EDA, 85 kJ 79MB Resistance at 3.5 and 3.6 seconds: 1.57661 1.54527 Time (ms): 0 5 10 25 ---------------------------------------- Ip (kA): -3.2547 -23.9530 -36.8751 -114.4076 dIp/dt (kA/ms): -1.9026 -3.8029 -3.9250 -6.8399 pressure (mTorr): 0.0583 0.0590 0.0596 0.0527 Bz0 (mT): 4.1373 7.4753 8.3720 23.1276 Br0 (mT): 0.4584 -1.0231 -1.9312 -0.4246
Oct 29 1999 11:31:07:090AM	991029009	Jim Irby	RF thinks the TF waggle is causing them to trip out, so we took the -158 plateau to -142. Plasma: 1.87 seconds, 86 kJ 79MB Resistance at 3.5 and 3.6 seconds: 1.63348 1.61371 Time (ms): 0 5 10 25 ---------------------------------------- Ip (kA): -3.2777 -18.7612 -31.6833 -106.6544 dIp/dt (kA/ms): -1.5202 -3.0382 -4.3073 -7.2234 pressure (mTorr): 0.0583 0.0583 0.0590 0.0521 Bz0 (mT): 3.4986 5.2837 6.6742 22.5158 Br0 (mT): 0.1927 -0.8585 -0.6622 -1.1393 TF waggle fixes trips we think.
Oct 29 1999 11:47:26:983AM	991029010	Jim Irby	No PCS changes Plasma: 1.87 seconds, Nearly lost all power in TCI CO2 laser, a little sooner and we would have lost feedback Time (ms): 0 5 10 25 ---------------------------------------- Ip (kA): -3.2777 -18.7842 -31.6833 -104.0700 dIp/dt (kA/ms): -1.5225 -2.7848 -3.9250 -6.7133 pressure (mTorr): 0.0590 0.0603 0.0596 0.0533 Bz0 (mT): 3.4782 6.3222 7.5152 22.0892 Br0 (mT): 0.0995 -0.6954 -0.8105 -0.8551 79MB Resistance at 3.5 and 3.6 seconds: 1.62349 1.57933
Oct 29 1999 12:06:38:810PM	991029011	Jim Irby	Increased RCUR again to 0.6730 for more RF loading; gap should decrease by 3 mm Pressure before shot 1.3e-6 Plasma: 1.87 seconds, 86 kJ Time (ms): 0 5 10 25 ---------------------------------------- Ip (kA): -3.2777 -18.7612 -34.2907 -106.6314 dIp/dt (kA/ms): -1.7748 -3.2916 -3.9250 -7.6024 pressure (mTorr): 0.0583 0.0590 0.0583 0.0521 Bz0 (mT): 2.1111 6.2541 7.9838 21.3087 Br0 (mT): -0.1103 -0.7216 -1.7552 -0.5459 Fewer trips on RF with the smaller gap. Lower voltages at the antenna. Confinement worse.
Oct 29 1999 12:19:32:420PM	991029012	Jim Irby	No PCS changes Plasma Time (ms): 0 5 10 25 ---------------------------------------- Ip (kA): -3.2547 -23.9300 -34.2907 -116.9690 dIp/dt (kA/ms): -1.7736 -3.5472 -4.3074 -7.2222 pressure (mTorr): 0.0596 0.0583 0.0590 0.0533 Bz0 (mT): 3.1209 6.4525 8.2795 23.2531 Br0 (mT): 0.0019 -0.5019 -0.6047 -0.8210 79MB Resistance at 3.5 and 3.6 seconds: 1.62033 1.57961
Oct 29 1999 12:37:55:247PM	991029013	Jim Irby	No PCS changes Plasma: 90 kJ TCI CO2 laser power takes another dive during shot Beautiful, flat, RF pulse 79MB Resistance at 3.5 and 3.6 seconds: 1.63821 1.56658 Time (ms): 0 5 10 25 ---------------------------------------- Ip (kA): -3.2777 -23.9530 -31.6833 -116.9690 dIp/dt (kA/ms): -1.9025 -2.9115 -4.0528 -7.0967 pressure (mTorr): 0.0583 0.0590 0.0590 0.0515 Bz0 (mT): 2.7033 5.0519 7.7079 22.4816 Br0 (mT): 0.2653 -0.4648 -0.5130 -0.5219
Oct 29 1999 12:59:39:717PM	991029014	Jim Irby	No PCS changes Plasma: 1.87 seconds, 85 kJ 79MB Resistance at 3.5 and 3.6 seconds: 1.58091 1.60877 Time (ms): 0 5 10 25 ---------------------------------------- Ip (kA): -3.2777 -18.7612 -36.8521 -114.3846 dIp/dt (kA/ms): -1.5202 -3.5461 -4.5608 -7.3501 pressure (mTorr): 0.0590 0.0583 0.0590 0.0527 Bz0 (mT): 2.8432 5.8967 6.7177 22.1219 Br0 (mT): 0.1988 -0.5646 -0.8548 -1.3074 Nice RF pulse
Oct 29 1999 01:27:13:403PM	991029015	Jim Irby	No PCS changes Plasma
Oct 29 1999 01:39:16:373PM	991029016	Jim Irby	No PCS changes Plasma: 1.87 seconds, 84 kJ Time (ms): 0 5 10 25 ---------------------------------------- Ip (kA): -3.2547 -21.3686 -34.2677 -114.4076 dIp/dt (kA/ms): -1.7736 -3.0405 -4.3062 -6.9700 pressure (mTorr): 0.0583 0.0583 0.0590 0.0521 Bz0 (mT): 4.1123 7.2391 7.1997 21.5599 Br0 (mT): 0.5748 -0.0765 -0.4573 -0.4574
Oct 29 1999 01:58:56:200PM	991029017	Jim Irby	No PCS changes Plasma
Oct 29 1999 02:07:15:827PM	991029018	Jim Irby	No PCS changes Plasma: 1.87 seconds, 87 kJ 79MB Resistance at 3.5 and 3.6 seconds: 1.62822 1.57302 Time (ms): 0 5 10 25 ---------------------------------------- Ip (kA): -3.2547 -23.9300 -34.2677 -104.0700 dIp/dt (kA/ms): -2.0270 -3.8006 -4.0541 -7.3478 pressure (mTorr): 0.0583 0.0583 0.0583 0.0533 Bz0 (mT): 3.6893 6.0341 7.0246 21.4094 Br0 (mT): 0.5623 -0.2142 -0.4161 -0.4807
Oct 29 1999 03:08:17:937PM	991029019	Jim Irby	No changes to PCS Plasma
Oct 29 1999 03:07:58:170PM	991029020	Jim Irby	No changes to PCS Plasma
Oct 29 1999 03:07:18:747PM	991029021	Jim Irby	No changes to PCS Plasma 79MB Resistance at 3.5 and 3.6 seconds: 1.57880 1.55672 Time (ms): 0 5 10 25 ---------------------------------------- Ip (kA): -3.2547 -23.9300 -31.6833 -114.3846 dIp/dt (kA/ms): -2.0281 -2.7871 -3.5461 -6.7144 pressure (mTorr): 0.0577 0.0583 0.0583 0.0521 Bz0 (mT): 3.2627 5.3647 7.7344 18.9765 Br0 (mT): 0.7683 -0.8041 0.2122 -1.5016
Oct 29 1999 03:35:10:000PM	991029022	Jim Irby	No changes to PCS basepressure before shot: 1.0e-6 Torr plasma: 1.87 seconds, 88 kJ 79MB Resistance at 3.5 and 3.6 seconds: 1.53516 1.55725 Time (ms): 0 5 10 25 ---------------------------------------- Ip (kA): -3.2547 -23.9300 -36.8521 -106.6314 dIp/dt (kA/ms): -2.0270 -3.7995 -3.8017 -7.0945 pressure (mTorr): 0.0577 0.0577 0.0577 0.0515 Bz0 (mT): 2.5122 5.1758 7.3452 21.3667 Br0 (mT): 0.0897 -0.6865 -0.2794 -1.2418
Oct 29 1999 03:59:44:043PM	991029023	Jim Irby	No PCS changes Plasma disrupts at 0.3457 seconds, injections and MHD activity Looks like a brick.
Oct 29 1999 04:02:28:000PM	991029024	Jim Irby	No PCS changes Plasma: 1.86 seconds, 87 kJ Time (ms): 0 5 10 25 ---------------------------------------- Ip (kA): -3.2547 -23.9300 -42.0209 -116.9690 dIp/dt (kA/ms): -2.0270 -3.8006 -3.9273 -7.2200 pressure (mTorr): 0.0570 0.0577 0.0564 0.0510 Bz0 (mT): 3.6963 5.9570 6.4917 22.7086 Br0 (mT): 0.3160 -0.6080 -0.6156 -0.8745 79MB Resistance at 3.5 and 3.6 seconds: 1.58511 1.60719 THE END

Engineering Operator Comments
Shot	Time	Type	Status	Comment
1	08:09:27:747AM	Plasma	Ok	no faults/plasma
2	08:34:28:340AM	Plasma	Ok	no faults/plasma
3	08:56:41:343AM	Plasma	Ok	no faults/plasma
4	09:17:22:233AM	Plasma	Ok	no faults/plasma
5	09:39:19:043AM	Plasma	Ok	no faults/plasma
6	10:00:02:200AM	Plasma	Ok	no faults/plasma
7	10:22:49:700AM	Plasma	Ok	no faults/plasma
8	10:46:14:467AM	Plasma	Ok	no faults/plasma
9	11:13:01:547AM	Plasma	Ok	no faults/plasma
10	11:32:06:077AM	Plasma	Ok	no faults/plasma
11	11:50:47:937AM	Plasma	Ok	(null)
12	12:08:12:233PM	Plasma	Ok	(null)
13	12:27:36:967PM	Plasma	Ok	(null)
14	12:45:44:873PM	Plasma	Ok	(null)
15	01:04:35:640PM	Plasma	Ok	(null)
16	01:24:21:060PM	Plasma	Ok	(null)
17	01:42:42:670PM	Plasma	Ok	(null)
18	01:59:55:043PM	Plasma	Ok	(null)
19	02:21:42:437PM	Plasma	Ok	(null)
20	02:43:30:903PM	Plasma	Ok	(null)
21	02:59:02:840PM	Plasma	Ok	(null)
22	03:18:05:590PM	Plasma	Ok	(null)
23	03:37:10:217PM	Plasma	Ok	(null)
24	03:54:43:013PM	Plasma	Ok	(null)