| Miniproposals | ||||||||||
|
| Operators | |
| Session leader(s): | Miklos Porkolab |
| Physics operator(s): | Jim Irby |
| Engineering operator(s): | Bill Byford,Bill Cochran |
| Engineering Operator Run Comment |
| Continuation of MP 324A, Current Ramp Studies. Porkolab/Irby/Cochran/By |
| Session Leader Plans |
| Physics Operators Plans |
| Session Leader Summaries |
| Entered: Jul 7 2004 03:49:31:600PM |
| Author: To Be Determined |
| Session Leader Summary for 1021025. This run was the last phase of MP 324A, to study plasma confinement during current ramp, and to see if an ITB would form during the reversed shear phase in the presence of central and off-axis RF heating. The run went very well, with RF power coupled routinely into the plasma, typically 2.4 MW from E+D port antennas at 80 MHz (central heating at 5.4 T and off-axis heating at 4.5 T), and 1.0-1.2 MW from the J port antenna at 78 MZ (off-axis heating aat 5.4T and central heating at 4.5T). The main reason for this run was to provide target plasmas for various diagnostics, in particular MSE, toroidal rotation (Hirex with AR injection) as well as Li pellet injection. Good data was obtained for all of these diagnostics not only at 5.4 T (shots 4-27), but also at 4.5T near the end of the run day (shots 28-32). In addition, TAE modes were routinely observed by both the PCI and magnetic diagnostics. The PCI also detected strong fluctuations centered at frequencies around 100 kHz, however broader band than the usual QC mod. The measured wavenumbers were in the range 2-9 cm^-1 with increasing frequencies, respectively. Interesting shots included 5 and 6, where ELMm-free H modes were obtained during current ramp before sawteeth set in (typically at 0.31 sec at T_e=5.0 keV) with stored energy of 100-120 kJ, H=1.5, Beta_N=1.0, Prf=3.2 MW. Shot 6 had 5 repeated H modes, ending with large ELMS. A power scan showed H modes with large ELMS (shots 25,26, and no ELMs as the power was lowered to 2.5 MW on shot 27). During the 4.5T run, we observed very large type-I ELMS (???) which deserve further study (shots 31,32 at P_rf=3.5-4.0 MW; note that no H mode was obtained at P_rf=2.2 MW, shot 30). Much data was obtained for further analysis and the APS poster. arge ELMy H modes (shots 25,26 |
| Physics Operator Summaries |
| Entered: Jul 7 2004 04:37:16:677PM |
| Author: To Be Determined |
| Engineering setup for Friday, October 25th, Run 1021025 Continuation of MP 324A, Current Ramp Studies Session leader: Porkolab Physics Operator: Irby ECDC overnight in D2 stopping by 07:00. Overnight bake at 60C Engineering setup as on 1021023027 Power systems the same as shot 1020822010 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 10 psi D2 Hybrid DISABLED (PG2) (for ECDC) fill C-side with 30 psi D2 Hybrid enabled (PG3) J-Bottom should be disabled and pumped out Enable the following gate valves: ECE, VUV, DNB ------------------------------------------------------------------------------- RF Setup: FMIT1, 2, and 3 in Run On by 07:00 ------------------------------------------------------------------------------- Goals of this run will be addition of rotation, MSE, and pellet measurements to the ramp up data. ------------------------------------------------------------------------------- Summary ------------------------------------------------------------------------------- Machine ran extremely well with startups at both 5.4 and 4.5 T. Small tweaks needed for both EF4 and gas as usual. The rf systems also ran extremely well, and were able to provide whatever was asked of them. Faults: EF3 breaker pulled before the shot on shot 7. A gate malfuctioned on shot 30 keeping FMIT3 from running. Duds 29 Fizzles 02, 15 Plasmas 03, 04, 05, 06, 08, 09, 10, 11, 12, 13, 14 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26 27, 28, 30, 31, 32 Tests 01 Faults 07 ------------------------------------------------------------------------------- ------------------------------------------------------------------------------- Entry display output on Fri Oct 25 17:20:47 2002 ---------------------------------------------------------------------------- 1021025xxx irby PHYSICS_OPERATOR Oct 25 2002 7:46:45:973AM . . . . . . . . . . . . . . . . . . . . Engineering setup for Friday, October 25th, Run 1021025 Continuation of MP 324A, Current Ramp Studies Session leader: Porkolab Physics Operator: Irby ECDC overnight in D2 stopping by 07:00. Overnight bake at 60C Engineering setup as on 1021023027 Power systems the same as shot 1020822010 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 10 psi D2 Hybrid DISABLED (PG2) (for ECDC) fill C-side with 30 psi D2 Hybrid enabled (PG3) J-Bottom should be disabled and pumped out Enable the following gate valves: ECE, VUV, DNB ------------------------------------------------------------------------------- RF Setup: FMIT1, 2, and 3 in Run On by 07:00 ------------------------------------------------------------------------------- Goals of this run will be addition of rotation, MSE, and pellet measurements to the ramp up data. ---------------------------------------------------------------------------- 1021025001 irby PHYSICS_OPERATOR Oct 25 2002 8:11:08:490AM . . . . . . . . . . . . . . . . . . . . Loaded shot 1021023026 into segment 2 prefill -0.530 to -0.50 s, D2 Argon: 0.35 to 0.39 s EF4 at -1325 Amps **** Cycle Test **** Time (ms): 0 5 10 25 ---------------------------------------- pressure (mTorr): 0.0835 0.0817 0.0764 0.0884 ---------------------------------------------------------------------------- 1021025002 irby PHYSICS_OPERATOR Oct 25 2002 9:07:13:393AM . . . . . . . . . . . . . . . . . . . . Reduced prefill by 2 ms --- -0.528 to 0.500 s --- cycle test puff a little high We will start with the argon puff at its normal time and then move it up into the starup so that Davis can get data there. Try for plasma Fizzle ---- Time (ms): 0 5 10 25 ---------------------------------------- Ip (kA): -3.3580 -14.4229 -23.8765 -25.1943 dIp/dt (kA/ms): -1.1827 -2.0436 -1.4229 -0.1615 pressure (mTorr): 0.0764 0.0714 0.0826 0.0817 Bz0 (mT): -4.9963 -2.5353 -0.9137 14.7091 Br0 (mT): -0.2517 -0.5442 -0.8542 -0.4093 Gas low, Bz0 low Bz0 will probably change on the next shot, so leave it alone Will add 1 ms to gas ---------------------------------------------------------------------------- 1021025003 irby PHYSICS_OPERATOR Oct 25 2002 9:37:05:043AM . . . . . . . . . . . . . . . . . . . . Added 1 ms to prefill Nice plasma --- h-mode --- j-port a little late ---- type 1 elm(s)? ---------------------------------------------------------------------------- 1021025004 irby PHYSICS_OPERATOR Oct 25 2002 9:45:36:340AM . . . . . . . . . . . . . . . . . . . . Plasma --- no h-mode Bz0 down a little --- current rise not great ---------------------------------------------------------------------------- 1021025005 irby PHYSICS_OPERATOR Oct 25 2002 9:52:30:120AM . . . . . . . . . . . . . . . . . . . . EF4 from -1325 to -1315 DNB for next shot Prefill increased by 1 ms Good plasma -- h-mode --- rf looks good ---------------------------------------------------------------------------- 1021025006 irby PHYSICS_OPERATOR Oct 25 2002 10:09:45:840AM . . . . . . . . . . . . . . . . . . . . Miklos has asked for a longer rf pulse --- to 0.8 s several elm-free h-modes terminated with an elm? Time (ms): 0 5 10 25 ---------------------------------------- Ip (kA): -1.6999 -15.3969 -25.8173 -94.9250 dIp/dt (kA/ms): -1.3440 -2.4452 -2.5389 -7.4755 pressure (mTorr): 0.0826 0.0682 0.0772 0.0714 Bz0 (mT): -3.5177 -0.9021 1.0424 18.9397 Br0 (mT): -0.1128 -0.7104 -0.7777 -0.5186 Need a couple of tweeks for the next shot ---------------------------------------------------------------------------- 1021025007 irby PHYSICS_OPERATOR Oct 25 2002 10:17:51:280AM . . . . . . . . . . . . . . . . . . . . EF4 to -1325 from -1315 prefill increased by 1 ms EF3 breaker opened? ---------------------------------------------------------------------------- 1021025008 irby PHYSICS_OPERATOR Oct 25 2002 10:47:41:116AM . . . . . . . . . . . . . . . . . . . . Try again Plasma into rampdown ---------------------------------------------------------------------------- 1021025009 irby PHYSICS_OPERATOR Oct 25 2002 11:00:34:033AM . . . . . . . . . . . . . . . . . . . . repeat plasma into rampdown ---------------------------------------------------------------------------- 1021025010 irby PHYSICS_OPERATOR Oct 25 2002 11:17:28:470AM . . . . . . . . . . . . . . . . . . . . Argon puff moved to 0.150 to 0.180 s Davis will look earlier at the rotation Plasma into rampdown ---------------------------------------------------------------------------- 1021025011 irby PHYSICS_OPERATOR Oct 25 2002 11:26:50:956AM . . . . . . . . . . . . . . . . . . . . EF4 to -1315 from -1325 plasma into rampdown, but startup still not great ---------------------------------------------------------------------------- 1021025012 irby PHYSICS_OPERATOR Oct 25 2002 11:59:40:660AM . . . . . . . . . . . . . . . . . . . . RCUR decreased by .001 m --- try to reduce moly (from k-limiter?) plasma into rampdown ---- h-mode early ---------------------------------------------------------------------------- 1021025013 irby PHYSICS_OPERATOR Oct 25 2002 12:09:35:806PM . . . . . . . . . . . . . . . . . . . . Argon from 0.1 to 0.14 s Plasma to rampdown Good signals for the rotation measurement but no early h-mode ---------------------------------------------------------------------------- 1021025014 irby PHYSICS_OPERATOR Oct 25 2002 12:32:20:630PM . . . . . . . . . . . . . . . . . . . . Argon puff turned off for a basline and see if h-modes are affected Plasma --- but with Li pellet when we would have expected the h-mode --- pellet programming error ---------------------------------------------------------------------------- 1021025015 irby PHYSICS_OPERATOR Oct 25 2002 12:41:26:460PM . . . . . . . . . . . . . . . . . . . . Repeat Fizzle ---- Time (ms): 0 5 10 25 ---------------------------------------- Ip (kA): -2.3660 -20.2956 -31.7079 -31.7223 dIp/dt (kA/ms): -1.6927 -2.9411 -1.4055 -0.3205 pressure (mTorr): 0.0864 0.0781 0.0935 0.0706 Bz0 (mT): -3.0359 -0.9479 -0.0562 11.9264 Br0 (mT): -0.1173 -0.3641 -0.5181 -0.4796 ---------------------------------------------------------------------------- 1021025016 irby PHYSICS_OPERATOR Oct 25 2002 12:51:14:120PM . . . . . . . . . . . . . . . . . . . . EF4 from -1315 to -1325 --- didn't load it! Plasma anyway ---- no h-mode --- will enable argon again for next shot ---------------------------------------------------------------------------- 1021025017 irby PHYSICS_OPERATOR Oct 25 2002 1:16:39:606PM . . . . . . . . . . . . . . . . . . . . EF4 to -1325 Argon from 0.100 to 0.140 s No pellet --- Plasma into rampdown Bz0 a little more negative ---------------------------------------------------------------------------- 1021025018 irby PHYSICS_OPERATOR Oct 25 2002 1:40:18:933PM . . . . . . . . . . . . . . . . . . . . No RF for this shot --- diagnostic baselines/comparisons Distruption at 1.57 s ---------------------------------------------------------------------------- 1021025019 irby PHYSICS_OPERATOR Oct 25 2002 1:44:11:033PM . . . . . . . . . . . . . . . . . . . . No RF Plasma to 1.6 s ---------------------------------------------------------------------------- 1021025020 irby PHYSICS_OPERATOR Oct 25 2002 1:53:01:520PM . . . . . . . . . . . . . . . . . . . . Prefill reduced by 2 ms Plasma for 1.56 s ---------------------------------------------------------------------------- 1021025021 irby PHYSICS_OPERATOR Oct 25 2002 2:23:39:673PM . . . . . . . . . . . . . . . . . . . . Plasma to 1.579 s ---------------------------------------------------------------------------- 1021025022 irby PHYSICS_OPERATOR Oct 25 2002 2:25:51:990PM . . . . . . . . . . . . . . . . . . . . Plasma for 1.58 s Last of the ohmic shots for a while ---------------------------------------------------------------------------- 1021025023 irby PHYSICS_OPERATOR Oct 25 2002 2:51:05:710PM . . . . . . . . . . . . . . . . . . . . RF back on Raised NL04 request from 6.0 to 7.0 e19 /m^2 --- increased gain from 8 to 9. Got h-mode back. ---------------------------------------------------------------------------- 1021025024 irby PHYSICS_OPERATOR Oct 25 2002 2:58:01:190PM . . . . . . . . . . . . . . . . . . . . Plasma into rampdown ---------------------------------------------------------------------------- 1021025025 irby PHYSICS_OPERATOR Oct 25 2002 3:29:23:220PM . . . . . . . . . . . . . . . . . . . . Nl04 request to 8e19/m^2 Extended h-mode with possible type 1 elms Plasma for 1.58 s ---------------------------------------------------------------------------- 1021025026 irby PHYSICS_OPERATOR Oct 25 2002 3:49:45:353PM . . . . . . . . . . . . . . . . . . . . Higher rf power More elms Plasma for 1.68 s ---------------------------------------------------------------------------- 1021025027 irby PHYSICS_OPERATOR Oct 25 2002 3:50:05:760PM . . . . . . . . . . . . . . . . . . . . Plasma into rampdown poor first h-mode ---------------------------------------------------------------------------- 1021025028 irby PHYSICS_OPERATOR Oct 25 2002 4:03:33:850PM . . . . . . . . . . . . . . . . . . . . Loaded shot 1021022025 --- 4.5 T Reloaded Argon puff for 0.1 to 0.14 s Plasma into rampdown but no early h-mode ---------------------------------------------------------------------------- 1021025029 irby PHYSICS_OPERATOR Oct 25 2002 4:17:17:186PM . . . . . . . . . . . . . . . . . . . . Turned off Argon --- try for more rf power Raised early density request from 6.5 to 7.0 e19/m^2 DuD Time (ms): 0 5 10 25 ---------------------------------------- Ip (kA): -1.0528 -21.5964 -26.7994 -28.1208 dIp/dt (kA/ms): -1.8861 -2.4764 -0.6697 -0.0461 Bz0 (mT): -2.2528 0.3511 2.1370 15.1746 Br0 (mT): 0.1217 -0.4579 -0.7143 -0.1816 PO allowed Bz0 to drift to positive ---------------------------------------------------------------------------- 1021025030 irby PHYSICS_OPERATOR Oct 25 2002 4:36:50:070PM . . . . . . . . . . . . . . . . . . . . EF4 from -1315 to -1335 A Reduced prefill by 1 ms (29 ms total) Still no argon Plasma into rampdown, but no fmit3 ---------------------------------------------------------------------------- 1021025031 irby PHYSICS_OPERATOR Oct 25 2002 4:53:23:146PM . . . . . . . . . . . . . . . . . . . . Plasma into rampdown --- Earl gets his pellet at 1.9 s Good early h-mode with strong elms Very good repeat of shot 1021022025 ---------------------------------------------------------------------------- 1021025032 irby PHYSICS_OPERATOR Oct 25 2002 5:17:02:210PM . . . . . . . . . . . . . . . . . . . . Plasma into rampdown --- Very good early h-mode |
| Session Leader Comments | |||
| Oct 25 2002 06:34:45:153PM | 1021025002 | Miklos Porkolab | Fizzle. |
| Oct 25 2002 06:36:42:110PM | 1021025003 | Miklos Porkolab | First plasma at B= 5.4 T, Ip ramp to 0.9 MA, low density, Rf up to 2.8 MW but tripped several times early into ramp, will repeat shot. |
| Oct 25 2002 06:40:11:180PM | 1021025004 | Miklos Porkolab | Good shot, Prf=2.8 MW, first sawtooth at 0.29 sec, Te= 5.0keV. Good target for diagnostic. |
| Oct 25 2002 06:51:33:763PM | 1021025005 | Miklos Porkolab | Good shot, Prf=3.2 MW, first sawtooth at 0.35 sec, Te= 5.0keV. Get into H mode, mostly ELM free, but a few large ELMS at the beginning (t= 0.23 sec) and the end (0.39sec) of the H mode. Inetersting shot ! Although with significant impurity accumulation. Stored energy up to 120 kJ, H=1.5, Beta_N=1.0. |
| Oct 25 2002 07:05:31:790PM | 1021025006 | Miklos Porkolab | High power shot, clean, several ELM free H modes at 3.4 MW, terminating by large Elms, etc, and repeat 5 times during 0.8 sec l;ong RF pulse. Te=5.0 keV, first sawtooth at 0.32 sec , neutron rate during first peak at 1.5x10^13 at 0.31 sec, just before the first sawtooth occurs. Also, the stored energy is 100 kJ at this time. H factor is 1.2, slightly less than on shot 5. |
| Oct 25 2002 06:53:50:427PM | 1021025007 | Miklos Porkolab | FIzzle. |
| Oct 25 2002 07:08:23:343PM | 1021025008 | Miklos Porkolab | Slightly lower density, clean 3.2 MW RF, no H mode, good target plasma for diagnostic. |
| Oct 25 2002 07:09:30:737PM | 1021025009 | Miklos Porkolab | Slightly lower density, clean 3.2 MW RF, no H mode, good target plasma for diagnostic. |
| Oct 25 2002 06:30:18:693PM | 1021025010 | Miklos Porkolab | 3.2 MW clean shot for Ar injection and other diagnostic. Sawteeth at 0.28 sec. |
| Oct 25 2002 12:51:40:213PM | 1021025011 | Miklos Porkolab | Fired without AR to get baseline shot. However, pellet was fired in too early and tripped RF. Need to repeat shot with pellet injected late. |
| Oct 25 2002 12:16:24:740PM | 1021025012 | Miklos Porkolab | Good shot. Moved Argon injection to 0.1 sec. Poor HIREX signal. Early H mode. Ar injected at 0.15 sec, for 30 ms. Prf=3.2 MW. |
| Oct 25 2002 12:10:32:103PM | 1021025013 | Miklos Porkolab | Good shot. Moved Argon injection to 0.1 sec. Good HIREX signal. No early H mode. Next shot will shut off AR to see if it had impact on the discharge. Prf=3.2 MW. |
| Oct 25 2002 12:27:51:637PM | 1021025014 | Miklos Porkolab | Fired without AR to get baseline shot. However, pellet was fired in too early and tripped RF. Need to repeat shot with pellet injected late. |
| Oct 25 2002 06:18:53:297PM | 1021025015 | Miklos Porkolab | Fizzle. |
| Oct 25 2002 06:20:02:110PM | 1021025015 | Miklos Porkolab | Fizzle. |
| Oct 25 2002 06:21:42:333PM | 1021025015 | Miklos Porkolab | Fizzle. |
| Oct 25 2002 06:23:05:100PM | 1021025015 | Miklos Porkolab | Fizzle. |
| Oct 25 2002 06:17:25:917PM | 1021025016 | Miklos Porkolab | Good shot, low density, no ELMS, no clear H mode. 3.2 MW into plasma. Sawteeth at 0.28 sec |
| Oct 25 2002 01:07:50:430PM | 1021025017 | Miklos Porkolab | Good shot, AR at 0.10 to 0.14 sec, clean 3.2 MW RF. No pellet. |
| Oct 25 2002 06:09:32:510PM | 1021025018 | Miklos Porkolab | Ohmic plasma for MSE calibration. |
| Oct 25 2002 06:08:09:167PM | 1021025019 | Miklos Porkolab | Ohmic plasma for MSE calibration. |
| Oct 25 2002 06:05:25:583PM | 1021025020 | Miklos Porkolab | Ohmic plasma for MSE calibration. |
| Oct 25 2002 02:32:34:143PM | 1021025022 | Miklos Porkolab | Ohmic shot for MSE. |
| Oct 25 2002 02:53:59:027PM | 1021025023 | Miklos Porkolab | Couple RF back. Raise the density to see if we get back the ElM free H mode observed on shot 5. Marginal situation, drops out of H mode early during ramp. Repeat shot. |
| Oct 25 2002 03:02:15:510PM | 1021025024 | Miklos Porkolab | Repeat shot at slightly higher density. Got H mode back only after sawteeth. 3.2 MW RF. |
| Oct 25 2002 05:55:01:483PM | 1021025026 | Miklos Porkolab | Higher density. Got H mode back with large ELMs. 3.5MW RF. |
| Oct 25 2002 04:19:44:753PM | 1021025027 | Miklos Porkolab | Lowered power to 2.5 MW. Did not get H mode during the rampup. |
| Oct 25 2002 04:27:18:003PM | 1021025028 | Miklos Porkolab | Lowered magnetic field to 4.5Tesla, trying to return to Oct. 22nd run and see if we can get the H mode back , ppossibly with type I ELMS during current ramp with more edge heating power. Low power, tuning at 1.2 MW. |
| Oct 25 2002 04:27:43:190PM | 1021025029 | Miklos Porkolab | Dud. B field is 4.5T. |
| Oct 25 2002 04:39:07:417PM | 1021025030 | Miklos Porkolab | Good shot, but transmitter #3 dropped out. Prf=2.2MW only. No H mode during ramp. B=4.5T. |
| Oct 25 2002 05:37:27:183PM | 1021025031 | Miklos Porkolab | Good shot, got H mode and ELMs, Prf = 3.5MW. |
| Oct 25 2002 05:17:30:333PM | 1021025032 | Miklos Porkolab | Good shot, got H mode and ELMs, Ramp RF power, large ELMS from 0.17 to 0.23 sec. Frequency increases rapidly near the end of the shot. Ramp power up to 4.0 MW. B=4.5T, Ip=0.9 MA. (Power 3.6 MW during H mode phase at 0.2 sec. |
| Physics Operator Comments | |||
| Oct 25 2002 07:46:45:973AM | Jim Irby | Engineering setup for Friday, October 25th, Run 1021025 Continuation of MP 324A, Current Ramp Studies Session leader: Porkolab Physics Operator: Irby ECDC overnight in D2 stopping by 07:00. Overnight bake at 60C Engineering setup as on 1021023027 Power systems the same as shot 1020822010 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 10 psi D2 Hybrid DISABLED (PG2) (for ECDC) fill C-side with 30 psi D2 Hybrid enabled (PG3) J-Bottom should be disabled and pumped out Enable the following gate valves: ECE, VUV, DNB ------------------------------------------------------------------------------- RF Setup: FMIT1, 2, and 3 in Run On by 07:00 ------------------------------------------------------------------------------- Goals of this run will be addition of rotation, MSE, and pellet measurements to the ramp up data. | |
| Oct 25 2002 08:11:08:490AM | 1021025001 | Jim Irby | Loaded shot 1021023026 into segment 2 prefill -0.530 to -0.50 s, D2 Argon: 0.35 to 0.39 s EF4 at -1325 Amps **** Cycle Test **** Time (ms): 0 5 10 25 ---------------------------------------- pressure (mTorr): 0.0835 0.0817 0.0764 0.0884 |
| Oct 25 2002 09:07:13:393AM | 1021025002 | Jim Irby | Reduced prefill by 2 ms --- -0.528 to 0.500 s --- cycle test puff a little high We will start with the argon puff at its normal time and then move it up into the starup so that Davis can get data there. Try for plasma Fizzle ---- Time (ms): 0 5 10 25 ---------------------------------------- Ip (kA): -3.3580 -14.4229 -23.8765 -25.1943 dIp/dt (kA/ms): -1.1827 -2.0436 -1.4229 -0.1615 pressure (mTorr): 0.0764 0.0714 0.0826 0.0817 Bz0 (mT): -4.9963 -2.5353 -0.9137 14.7091 Br0 (mT): -0.2517 -0.5442 -0.8542 -0.4093 Gas low, Bz0 low Bz0 will probably change on the next shot, so leave it alone Will add 1 ms to gas |
| Oct 25 2002 09:37:05:043AM | 1021025003 | Jim Irby | Added 1 ms to prefill Nice plasma --- h-mode --- j-port a little late ---- type 1 elm(s)? |
| Oct 25 2002 09:45:36:340AM | 1021025004 | Jim Irby | Plasma --- no h-mode Bz0 down a little --- current rise not great |
| Oct 25 2002 09:52:30:120AM | 1021025005 | Jim Irby | EF4 from -1325 to -1315 DNB for next shot Prefill increased by 1 ms Good plasma -- h-mode --- rf looks good |
| Oct 25 2002 10:09:45:840AM | 1021025006 | Jim Irby | Miklos has asked for a longer rf pulse --- to 0.8 s several elm-free h-modes terminated with an elm? Time (ms): 0 5 10 25 ---------------------------------------- Ip (kA): -1.6999 -15.3969 -25.8173 -94.9250 dIp/dt (kA/ms): -1.3440 -2.4452 -2.5389 -7.4755 pressure (mTorr): 0.0826 0.0682 0.0772 0.0714 Bz0 (mT): -3.5177 -0.9021 1.0424 18.9397 Br0 (mT): -0.1128 -0.7104 -0.7777 -0.5186 Need a couple of tweeks for the next shot |
| Oct 25 2002 10:17:51:280AM | 1021025007 | Jim Irby | EF4 to -1325 from -1315 prefill increased by 1 ms EF3 breaker opened? |
| Oct 25 2002 10:47:41:117AM | 1021025008 | Jim Irby | Try again Plasma into rampdown |
| Oct 25 2002 11:00:34:033AM | 1021025009 | Jim Irby | repeat plasma into rampdown |
| Oct 25 2002 11:17:28:470AM | 1021025010 | Jim Irby | Argon puff moved to 0.150 to 0.180 s Davis will look earlier at the rotation Plasma into rampdown |
| Oct 25 2002 11:26:50:957AM | 1021025011 | Jim Irby | EF4 to -1315 from -1325 plasma into rampdown, but startup still not great |
| Oct 25 2002 11:59:40:660AM | 1021025012 | Jim Irby | RCUR decreased by .001 m --- try to reduce moly (from k-limiter?) plasma into rampdown ---- h-mode early |
| Oct 25 2002 12:09:35:807PM | 1021025013 | Jim Irby | Argon from 0.1 to 0.14 s Plasma to rampdown Good signals for the rotation measurement but no early h-mode |
| Oct 25 2002 12:32:20:630PM | 1021025014 | Jim Irby | Argon puff turned off for a basline and see if h-modes are affected Plasma --- but with Li pellet when we would have expected the h-mode --- pellet programming error |
| Oct 25 2002 12:41:26:460PM | 1021025015 | Jim Irby | Repeat Fizzle ---- Time (ms): 0 5 10 25 ---------------------------------------- Ip (kA): -2.3660 -20.2956 -31.7079 -31.7223 dIp/dt (kA/ms): -1.6927 -2.9411 -1.4055 -0.3205 pressure (mTorr): 0.0864 0.0781 0.0935 0.0706 Bz0 (mT): -3.0359 -0.9479 -0.0562 11.9264 Br0 (mT): -0.1173 -0.3641 -0.5181 -0.4796 |
| Oct 25 2002 12:51:14:120PM | 1021025016 | Jim Irby | EF4 from -1315 to -1325 --- didn't load it! Plasma anyway ---- no h-mode --- will enable argon again for next shot |
| Oct 25 2002 01:16:39:607PM | 1021025017 | Jim Irby | EF4 to -1325 Argon from 0.100 to 0.140 s No pellet --- Plasma into rampdown Bz0 a little more negative |
| Oct 25 2002 01:40:18:933PM | 1021025018 | Jim Irby | No RF for this shot --- diagnostic baselines/comparisons Distruption at 1.57 s |
| Oct 25 2002 01:44:11:033PM | 1021025019 | Jim Irby | No RF Plasma to 1.6 s |
| Oct 25 2002 01:53:01:520PM | 1021025020 | Jim Irby | Prefill reduced by 2 ms Plasma for 1.56 s |
| Oct 25 2002 02:23:39:673PM | 1021025021 | Jim Irby | Plasma to 1.579 s |
| Oct 25 2002 02:25:51:990PM | 1021025022 | Jim Irby | Plasma for 1.58 s Last of the ohmic shots for a while |
| Oct 25 2002 02:51:05:710PM | 1021025023 | Jim Irby | RF back on Raised NL04 request from 6.0 to 7.0 e19 /m^2 --- increased gain from 8 to 9. Got h-mode back. |
| Oct 25 2002 02:58:01:190PM | 1021025024 | Jim Irby | Plasma into rampdown |
| Oct 25 2002 03:29:23:220PM | 1021025025 | Jim Irby | Nl04 request to 8e19/m^2 Extended h-mode with possible type 1 elms Plasma for 1.58 s |
| Oct 25 2002 03:49:45:353PM | 1021025026 | Jim Irby | Higher rf power More elms Plasma for 1.68 s |
| Oct 25 2002 03:50:05:760PM | 1021025027 | Jim Irby | Plasma into rampdown poor first h-mode |
| Oct 25 2002 04:03:33:850PM | 1021025028 | Jim Irby | Loaded shot 1021022025 --- 4.5 T Reloaded Argon puff for 0.1 to 0.14 s Plasma into rampdown but no early h-mode |
| Oct 25 2002 04:17:17:187PM | 1021025029 | Jim Irby | Turned off Argon --- try for more rf power Raised early density request from 6.5 to 7.0 e19/m^2 DuD Time (ms): 0 5 10 25 ---------------------------------------- Ip (kA): -1.0528 -21.5964 -26.7994 -28.1208 dIp/dt (kA/ms): -1.8861 -2.4764 -0.6697 -0.0461 Bz0 (mT): -2.2528 0.3511 2.1370 15.1746 Br0 (mT): 0.1217 -0.4579 -0.7143 -0.1816 PO allowed Bz0 to drift to positive |
| Oct 25 2002 04:36:50:070PM | 1021025030 | Jim Irby | EF4 from -1315 to -1335 A Reduced prefill by 1 ms (29 ms total) Still no argon Plasma into rampdown, but no fmit3 |
| Oct 25 2002 04:53:23:147PM | 1021025031 | Jim Irby | Plasma into rampdown --- Earl gets his pellet at 1.9 s Good early h-mode with strong elms Very good repeat of shot 1021022025 |
| Oct 25 2002 05:17:02:210PM | 1021025032 | Jim Irby | Plasma into rampdown --- Very good early h-mode |
| Engineering Operator Comments | ||||
| Shot | Time | Type | Status | Comment |
| 1 | 07:56:54:680AM | Test | Ok | Cycle/Gas test |
| 2 | 08:56:00:917AM | Plasma | Ok | |
| 3 | 09:11:40:700AM | Plasma | Ok | |
| 4 | 09:30:58:313AM | Plasma | Ok | |
| 5 | 09:44:22:933AM | Plasma | Ok | |
| 6 | 09:59:16:163AM | Plasma | Ok | |
| 7 | 10:13:01:003AM | Plasma | Bad | ef3 breaker opened |
| 8 | 10:26:04:793AM | Plasma | Ok | |
| 9 | 10:46:31:927AM | Plasma | Ok | |
| 10 | 11:03:58:603AM | Plasma | Ok | |
| 11 | 11:19:34:180AM | Plasma | Ok | |
| 12 | 11:37:26:463AM | Plasma | Ok | |
| 13 | 12:00:45:477PM | Plasma | Ok | |
| 14 | 12:15:49:723PM | Plasma | Ok | |
| 15 | 12:31:11:143PM | Plasma | Ok | |
| 16 | 12:44:09:870PM | Plasma | Ok | |
| 17 | 12:58:59:667PM | Plasma | Ok | |
| 18 | 01:15:52:840PM | Plasma | Ok | |
| 19 | 01:30:36:493PM | Plasma | Ok | |
| 20 | 01:46:46:413PM | Plasma | Ok | |
| 21 | 02:08:00:093PM | Plasma | Ok | |
| 22 | 02:21:47:607PM | Plasma | Ok | |
| 23 | 02:36:51:777PM | Plasma | Ok | |
| 24 | 02:51:16:443PM | Plasma | Ok | |
| 25 | 03:06:23:830PM | Plasma | Ok | |
| 26 | 03:21:28:737PM | Plasma | Ok | |
| 27 | 03:35:18:137PM | Plasma | Ok | |
| 28 | 03:56:49:913PM | Plasma | Ok | |
| 29 | 04:10:03:893PM | Plasma | Ok | |
| 30 | 04:24:52:937PM | Plasma | Ok | |
| 31 | 04:38:24:383PM | Plasma | Ok | |
| 32 | 04:53:20:117PM | Plasma | Ok | |