| Miniproposals | ||||||||||
|
| Operators | |
| Session leader(s): | Steve Wukitch |
| Physics operator(s): | Steve Wolfe |
| Engineering operator(s): | Gary Dekow,Bill Byford,Bill Parkin |
| Engineering Operator Run Comment |
| #355 ICRF Conditioning SL: Wukitch & MP#438? J-antenna evaluation w/o Fa |
| Session Leader Plans |
| Entered: Nov 15 2005 04:08:56:443PM |
| Author: Steve Wukitch |
| Engineering setup for Wednesday 16-Nov-2005
MP355 RF Conditioning MP J Antenna Evaluation: Operation without Faraday Screen Session leader: Wukitch Physics operator: Overnight ECDC in D2, and bake at 60 C. Run begins at 09:00 and ends at 17:00 Power systems as on 1051104026 (1.0 MA fiducial, 5.4 T, lower single null) A-coil configuration: normal [+Dtop -Dbot -Jtop +Jbot] and enabled. Gas Setup: fill B-Top with 6 psi D2 Hybrid enabled (PG4) fill B-side lower with 1 psi Ar Hybrid DISABLED (PG1) leave B-side upper as is Hybrid DISABLED (PG2) fill B-main (C-side) with 40 psi D2 Hybrid enabled (PG3) leave NINJA as is DISABLED Enable the following gate valves and shutters: VUV, Z-bolo shutters Torvac setup: Gate valves open ICRF Setup: All transmitters to run-on by 8:30 am. Important Diagnostics: magnetics, standard impurity spectroscopy, video monitors for antennas Plan: 1. Continue ICRF conditioning 2. Test J antenna in L-mode up to 3 MW (may require USN) 3. Increase power ramp time at 1 kW -> 150 kW 4. Scan outer gap 5. Begin H-mode threshold comparison 6. Begin H-mode performance comparison Plan is subject to change depending on course of events. |
| Entered: Nov 15 2005 08:59:54:537PM |
| Author: Vincent Tang |
| CNPA piggyback+ possible 2-3 shots:
During the day, fire DNB at 50keV with ~6A at t=1s. Hopefully we will catch a useable calibration shot during a fizzle or dud. The pressure has to be lower than ~30e-6torr. If we don't get this during the day, start with ~20e-6torr puff and fire the beam; adjust puff accordingly to get the optimal signal. |
| Physics Operators Plans |
| Entered: Nov 15 2005 06:00:06:333PM |
| Author: Steve Wolfe |
Physop plan and engineering setup for Wednesday, 1051116 ********************************************************* There are some minor differences between this engineering setup and the one in the SL_PLAN. Please follow the setup given here. ********************************************************* MP#355 ICRF Conditioning MP#438? J-antenna evaluation w/o Faraday screen SL: Wukitch And MP#389 CNPA calibration and testing (piggyback + 3shots) SL: V. Tang PO: Wolfe Overnight ECDC (2e-4 D2) and 60C bake Run begins at 09:00 (lockup at 08:30) and ends at 17:00 Power systems as on 1051104026 (1MA, 5.4T) *** NOTE: Fizzle delay on OH2's set to 300msec *** Acoil in standard configuration [+Dtop -Dbot -Jtop +Jbot] and enabled. Gas setup: ---------- Btop: fill to 6psi D2, Hybrid enabled (PG4) B-side lower: fill 1psi Ar+2psi Neon, Hybrid DISABLED to start (PG1) B-side upper: leave as is. (PG2) C-side main: fill to 40psi D2 Hybrid enabled (PG3) NINJA: leave as is DISABLED Enable VUV, ECE gate valves, Zbolo shutter (assuming no vacuum problems) Allow DNB gate valve permissive on request of DNB operator Torvac setup: TMP2 gate valve open, TMP1 shut (assuming the pump is still broken) RF Setup: All four transmitters in RUN-ON by 8:30 Plan: We'll start the day with the RF runs, following the sequence specified in the SL_PLAN. Initial segment 2 from 1051104026. Find an upper single null case and load it into seg 3 (and do the magnetics observer recalculation) in case we need it to keep out of H-mode in step 2; a possible candidate is 1050629014 (with Ip reduced from 1.05 to 1.0MA). Aside from tweaking the startup and the target plasma, the main Physop activity will come under step #4 (scan outer gap). The CNPA gate valve should be open and the beam firing during the day so Vincent can look at targets of opportunity, i.e. fizzles and duds. If by 4:00PM Vincent has not gotten the conditions he's looking for we will take 2 or three dedicated beam-into-gas shots with TF field only. We will monitor the OH coax resistance and dissipation during the day particularly after fizzles. If we get an alarm (>2.5uOhm) after the first fizzle (or after the first shot of the day, since the last shot from last week was a fizzle) then we will set up for a reverse-bridge oh and tf shot after subsequent fizzles. The engineering setup for these shots should be the same as 1051110023 (PLC control), except set the currents to 15kA instead of 10kA. If we get record high resistances (3.4 uOhms or higher) we will need to stop the run and re-evaluate the situation (per Irby). |
| Session Leader Summaries |
| Entered: Nov 16 2005 05:09:21:410PM |
| Author: Steve Wukitch |
| Run Summary
After a rough start, J antenna reached 3 MW into L-mode. Using a gap scan, we attempted to find a condition where the loading behavior indicated sheath loading. For gaps 0.5, 1., and 1.5 cm, no significant sheath loading was found or variation on the video monitor. We began H-mode threshold comparison but D antenna had degenerated to be unusable. We will recondition in vacuum before starting tomorrow. Earlier today D and E ran at 2 MW level before having problems at higher power and was unable to recover. |
| Physics Operator Summaries |
| Entered: Nov 16 2005 05:32:08:410PM |
| Author: Steve Wolfe |
The machine ran pretty well today, and the RF got part
of the program done. Unfortunately the CNPA electronics
had an oscillation problem that forced cancellation of
that part of the run plan.
For the first half of the day, FMIT#3
was having high voltage faults during C-Mod pulses. This
behavior had been seen the last time J3 was run, and the cause
not determined. Today the problem finally stopped after some additional
instrumentation was installed in the control circuitry to try
to identify the fault. The source of the fault was never found,
despite a lot of power room (and one cell) accesses that cost us
a number of shots.
Once J started running it came up to power fairly rapidly,
although at 3MW it always had at least one or two trips. E
ran clean most of the day, but D is still problematic.
There were no changes to the target until shot#24 when the field
was changed from 5.4 to 5.2T. The outer gap scan was carried out
shots#24-26, going from the initial 1.5cm to 1.0 to 0.5cm. No
obvious changes in loading, performance, or anything else were
observed during the scan. Shots#27-28 were back at 1.0cm gap,
with RF power ramps. The JANT camera view showed an interaction
near the midplane on the side tiles on the H-port side of the
antenna that correlated with J antenna being on. It didn't seem
to be sparking or spewing, just lighting up. No interaction on the
septa or current straps was visible.
Startup was not bad, with one string of 3 fizzles in a row (#13-15)
and one isolated fizzle on #19. Only a few shots had runaways.
I made a few minor tweaks to fields and pre-puff, which probably
didn't actually make much difference. There were a couple of late
breakdowns that went anyway. Aside from the fizzles there was one
ack failure/network glitch on shot#8 which resulted in no power supplies,
followed by two no-power cycles on 9 and 10, until the computer
guys rebooted some cPCI host computers. Apparently all of this
was fallout from someone improperly connecting to a network switch
across the street.
The good news was that the OH2U coax resistance was well-behaved all
day, not getting close to alarm levels even on the three successive
fizzles. The maximum reading at t=0 was ~2.0uOhm. We therefore did not
need to use the reverse bridge pulse trick.
There was a mysterious occurrence at the beginning of the run when the
spectroscopists noted the presence of large amounts of neon in
the discharge, despite the fact that B-side lower was disabled. The
B-top and C-side plena were purged and refilled with D2 before shot#3
and the neon dropped dramatically, and then decreased down to normal
levels over the next several shots. Apparently there had been some
cross-contamination when the plena were filled in the morning.
Scorecard:
----------
Tests/No Power/sysfails 3
Duds 0
Fizzles 4
Plasmas 21
-------- --
Shots 28
|
| Session Leader Comments | |||
| Nov 16 2005 09:51:37:003AM | 1051116001 | Steve Wukitch | 001 BT~5.4 T, Ip~1 MA, nl_04~0.9
D: 1 MW [1,1.5] sec E: 1 MW [0.9,1.2] sec J: 2 MW [.6,1.3] sec result: plasma - multiple H-modes D: ran 6 faults E: ran J: HV drop out at t=0 changed resistor and heating lamp on #3 yesterday and apparently we need to set the resistance properly (hopefully) |
| Nov 16 2005 09:58:27:990AM | 1051116002 | Steve Wukitch | 002 BT~5.4 T, Ip~1 MA, nl_04~0.9
D: 1 MW [1,1.5] sec E: 1 MW [0.9,1.2] sec J: 2 MW [.6,1.3] sec result: plasma - multiple H-modes D: ran 5 faults E: ran 1 fault J: HV drop out is later had replaced light with 375 W (from 250 W) |
| Nov 16 2005 10:57:10:537AM | 1051116003 | Steve Wukitch | 003 BT~5.4 T, Ip~1 MA, nl_04~1
D: 1 MW [1,1.5] sec E: 1 MW [1.3,1.5] sec J: dummy load result: plasma - multiple H-modes D: ran 8 faults E: ran 1 fault J: HV drop out time is different |
| Nov 16 2005 11:15:23:333AM | 1051116004 | Steve Wukitch | 004 BT~5.4 T, Ip~1 MA, nl_04~1
D: 1 MW [0.6,1.5] sec E: 1 MW [1,1.5] sec J: dummy load result: plasma - multiple H-modes D: ran 8 faults E: ran 2 faults J: HV drop out is at 0.55 sec |
| Nov 16 2005 11:56:03:973AM | 1051116005 | Steve Wukitch | 005 BT~5.4 T, Ip~1 MA, nl_04~1
D: 1 MW [0.6,1.5] sec E: 1 MW [1,1.5] sec J: dummy load at 0.4 sec result: plasma - multiple H-modes D: ran 1 fault E: ran J: HV drop out is at 0.55 sec |
| Nov 16 2005 12:00:52:990PM | 1051116007 | Steve Wukitch | 007 BT~5.4 T, Ip~1 MA, nl_04~.9
D: 1.15 MW [0.6,1.5] sec E: 1 MW [1,1.5] sec J: dummy load at 0.4 sec result: plasma - multiple H-modes D: ran max faults E: ran J: no drop out 24 V supply has some funny looking ripple |
| Nov 16 2005 12:12:01:537PM | 1051116008 | Steve Wukitch | 008 no shot |
| Nov 16 2005 12:50:20:880PM | 1051116009 | Steve Wukitch | no power |
| Nov 16 2005 12:51:02:787PM | 1051116010 | Steve Wukitch | no power |
| Nov 16 2005 01:23:43:787PM | 1051116011 | Steve Wukitch | 011 BT~5.4 T, Ip~1 MA, nl_04~.9
D: 1 MW [1.05,1.5] sec E: 1 MW [1.2,1.5] sec J: 1.5 MW [0.6,.95] sec result: plasma - multiple H-mode D: ran max faults after E is on E: ran J: ran |
| Nov 16 2005 01:23:53:503PM | 1051116012 | Steve Wukitch | 012 BT~5.4 T, Ip~1 MA, nl_04~.9
D: 1 MW [1.05,1.5] sec E: 1 MW [1.2,1.5] sec J: 2.4 MW [0.6,.95] sec result: plasma - multiple H-mode D: ran max faults - going down hill E: ran J: ran 3 faults |
| Nov 16 2005 01:40:43:240PM | 1051116013 | Steve Wukitch | fizzle |
| Nov 16 2005 02:02:25:787PM | 1051116015 | Steve Wukitch | fizzle |
| Nov 16 2005 02:19:54:177PM | 1051116016 | Steve Wukitch | 016 BT~5.4 T, Ip~1 MA, nl_04~.9
D: 1 MW [1.05,1.5] sec E: 1 MW [1.2,1.5] sec J: 3 MW [0.6,.95] sec result: plasma - multiple H-mode D: ran 4 faults E: ran J: ran 8 faults |
| Nov 16 2005 02:39:53:130PM | 1051116017 | Steve Wukitch | 017 BT~5.4 T, Ip~1 MA, nl_04~.9
D: 0.8 MW [1.05,1.5] sec E: 1 MW [1.2,1.5] sec J: 3 MW [0.6,.95] sec result: plasma - multiple H-mode D: ran max faults when E is on E: ran J: ran max faults D antenna appears to have a problem around 1.15 MW with E at 1 MW (006 and 007). The condition appears to have degraded because by 017 D did not run at 0.8 MW with E antenna. |
| Nov 16 2005 03:07:04:067PM | 1051116019 | Steve Wukitch | fizzle |
| Nov 16 2005 03:12:06:143PM | 1051116020 | Steve Wukitch | 020 BT~5.4 T, Ip~1 MA, nl_04~.9
D: 0.6 MW [1.05,1.5] sec E: 1 MW [1.2,1.5] sec J: 3 MW [0.6,.95] sec result: plasma - multiple H-mode D: ran max faults when E is on E: ran J: ran 9 faults |
| Nov 16 2005 03:40:00:347PM | 1051116021 | Steve Wukitch | 021 BT~5.4 T, Ip~1 MA, nl_04~.9
D: 0.6 MW [1.05,1.5] sec E: 1 MW [1.2,1.5] sec J: 3 MW [0.6,.95] sec result: plasma - multiple H-mode D: ran max faults when E is on E: ran J: ran 6 faults |
| Nov 16 2005 03:40:13:550PM | 1051116022 | Steve Wukitch | 022 BT~5.4 T, Ip~1 MA, nl_04~.9
D: 0.6 MW [1.05,1.5] sec E: 1 MW [1.2,1.5] sec J: 3 MW [0.6,.95] sec result: plasma - multiple H-mode D: ran max faults E: ran J: ran 7 faults |
| Nov 16 2005 03:52:19:287PM | 1051116023 | Steve Wukitch | 023 BT~5.4 T, Ip~1 MA, nl_04~.9
D: 0.6 MW [1.2,1.5] sec E: 1 MW [1.05,1.5] sec J: 3 MW [0.65,.95] sec result: plasma - multiple H-mode D: ran max faults E: ran J: ran 7 faults good loading comparison between J and E to 5.2 T |
| Nov 16 2005 04:09:00:190PM | 1051116024 | Steve Wukitch | 024 BT~5.2 T, Ip~1 MA, nl_04~.9, right gap~1.5 cm
D: 0.5 MW [1.05,1.5] sec E: 1.3 MW [1.05,1.5] sec J: 2->3 MW [0.6,.95] sec result: plasma D: ran max faults E: ran max faults J: ran 6 faults |
| Nov 16 2005 04:21:39:690PM | 1051116025 | Steve Wukitch | 025 BT~5.2 T, Ip~1 MA, nl_04~.9, right gap~1 cm
D: 0.5 MW [1.05,1.5] sec E: 1.3 MW [1.05,1.5] sec J: 2->3 MW [0.6,.95] sec result: plasma D: ran max faults E: ran J: ran faults at 3 MW no change in loading behavior or tile interaction |
| Nov 16 2005 04:33:12:020PM | 1051116026 | Steve Wukitch | 026 BT~5.2 T, Ip~1 MA, nl_04~.9, right gap~0.5 cm
D: 0.5 MW [1.05,1.5] sec E: 1.3 MW [1.05,1.5] sec J: 2->3 MW [0.6,.95] sec result: plasma D: ran max faults E: ran J: ran 2 faults at 3 MW |
| Nov 16 2005 04:53:49:380PM | 1051116027 | Steve Wukitch | 027 BT~5.2 T, Ip~1 MA, nl_04~.9, right gap~1 cm
D: ramp to 1.2 MW [1.05,1.5] sec E: ramp to 1.2 MW [1.05,1.5] sec J: ramp to 2.4 MW [0.6,.95] sec result: plasma D: ran max faults E: ran J: ran 2 faults at 3 MW |
| Nov 16 2005 05:09:10:287PM | 1051116028 | Steve Wukitch | 028 BT~5.2 T, Ip~1 MA, nl_04~.9, right gap~1 cm
D: ramp to 1 MW [1.1,1.5] sec E: ramp to 1.3 MW [1.1,1.5] sec J: ramp to 1.8 MW [0.6,1] sec result: plasma D: ran max faults E: ran J: ran clean! |
| Physics Operator Comments | |||
| Nov 16 2005 07:54:33:450AM | Steve Wolfe | PCS setup for shot #1: Import seg2 from 1051104026 "1.0MA, SNL 5.4T" program is nl4=0.9e20, rcur=0.6595,slight ramp on clearin, 25V maintenance level on PG3; 51msec@0.3sec puff on PG1 Seg 1 from 1051110031 (at least it's what was left in PCS) Br0=-.0002 ICef4U=-1340 * pg4=34msec to 30msec Seg 3 already has an upper null 0.8MA case in it; not sure where it came from. Import from 1050629014 seg3 anyway Recalculate predictors on wire 1-8 Change ref9-12 from Ip to 10V Load_wire 9 from 1050722024 seg2 wire 9 (B21_Proj) Integrator C to 0.3sec Zero acoil current program on all_v screen Change Ip from -1.05e6 to -1.0e6 Change nl04 from 0.8e20 to 0.9e20 Title to "1.0MA, Upper Null" Load at 16-Nov-2005 07:54:09.00 Open tree /home/wolfe/pcs_scratch -1 Open tree done | |
| Nov 16 2005 08:33:43:747AM | Steve Wolfe | Vincent has discovered there is a problem in his electronics this morning. Therefore, unless it is magically healed during the day, the MP#389 CNPA portion of today's run will not be attempted today. | |
| Nov 16 2005 09:26:44:670AM | 1051116001 | Steve Wolfe | Shot#1: Beam will be firing; no accommodation made in gas puff for first shot. plasma into rampdown, no (or few runaways) Multiple H-modes after 1sec Startup looks ok, bd about 6msec Not much from J, 1MW each (staggered with some overlap) from D&E. H/D about.05 before RF, rising to .09 or so. RF power room access to do something to J |
| Nov 16 2005 09:53:17:940AM | 1051116002 | Steve Wolfe | Shot#2: No PCS changes, RF changed a lightbulb. plasma to rampdown, J3 faulted at commutation again. More h-modes. Very late breakdown, around 12msec. Bz looks too negative. next shot: ef4 more positive by 10A |
| Nov 16 2005 10:28:25:113AM | 1051116003 | Steve Wolfe | Shot#3:ic_ef4u from -1340 to -1330 Matt and Alex are reporting a lot of Neon and argon in the plasma on shot#1 and 2, despite the fact that B-side lower is not being fired. Therefore, purge the C-side and B-top and refill with D2. Note B-top is now reading 6.85psi vs 6.2, so may be 10% higher on gas this time. INIT after 23minutes. plasma full length. breakdown back at 6msec. Bz still looks too negative. pressure is actually down a bit. FMIT#3 trips again, despite being switched into dummy load this shot. RF in power room again. Alex reports neon is down to levels like when we are puffing; since we aren't puffing from B-side lower, this may either mean there was still some in the line, or bside-lower piezo may be leaking. Take one more shot to see if it comes down again, then try purging bside-lower. H/D between .08 and .12. Next shot: no changes |
| Nov 16 2005 11:14:05:003AM | 1051116004 | Steve Wolfe | shot#4: No pcs changes. Andy has put the capacitor strip across the DC break on J3; turns out it wasn't there before. However, that is not going to make any non-RF noise pickup better. plasma full length, RF music again (j3 into dummy again). Still getting Hmodes with D&E, first one with D alone at 1MW startup looks ok. No runaways. P0 down to .06. Looks like the beginning of a hesitation, Bz still looks negative. Alex reports neon is down about 40% or so. Next shot: no changes |
| Nov 16 2005 11:24:09:723AM | 1051116005 | Steve Wolfe | shot#5: No pcs changes. Plasma full length. late breakdown 10msec; small runaway level early in shot. J3 ran (into dummy) before it faulted. Next shot: ICEF4U to -1320, Br0 to 0. |
| Nov 16 2005 11:44:55:287AM | 1051116006 | Steve Wolfe | shot#6: EF4 from -1330 to -1320; Br0 from -.0002 to 0. plasma full length. Breakdown back to 6msec, looks like one possible bounce but no runaways. J into dummy load again, still faulting. Steve says this one is different. H/D still around 8-12%. Next shot: No pcs changes. |
| Nov 16 2005 12:00:57:927PM | 1051116007 | Steve Wolfe | shot#7: No pcs changes plasma full length. No RF music this time; it won't misbehave if you're watching it! Early breakdown, still looks like a bounce at ~12msec, but no runaways. Shorter H-mode this time. Next: No pcs changes. RF group is going to instrument #4 |
| Nov 16 2005 12:18:10:270PM | 1051116008 | Steve Wolfe | shot#8: No pcs changes No pulse. Pat didn't report "entering pulse" until the state went back to recool. May have had a network glitch. State shows an ack failure Try again when it finishes trying to store data that never got taken |
| Nov 16 2005 12:29:18:910PM | 1051116009 | Steve Wolfe | shot#9: No pcs changes No power shot- INIT hung on DNB traq and then on rf cpci and on eng cpci |
| Nov 16 2005 12:51:00:253PM | 1051116010 | Steve Wolfe | shot#10: No pcs changes Stuck in INIT again. |
| Nov 16 2005 01:11:26:097PM | 1051116011 | Steve Wolfe | shot#11: No pcs changes Supposedly the relevant host computers are now rebooted and ready to go. Plasma full length- RF did not trip out. Had lots of runaways on this one; bounce in startup. J ran and did some heating. Looks like some light on the side tiles at one end. next shot: raise pg4 by 2msec |
| Nov 16 2005 01:24:41:020PM | 1051116012 | Steve Wolfe | shot#12: raise pg4 from 30 to 32msec RF will raise power, adjust waveform It's 13:15 and we're finally starting today's experiment. plasma full length late breakdown ~9msec; one tiny runaway dump D failed this time, J to 2.5MW with a couple of trips. next shot: No pcs changes |
| Nov 16 2005 01:37:03:753PM | 1051116013 | Steve Wolfe | shot#13: No pcs changes Base pressure is up to 3.5e-6 at 10 minutes; I may need to back down pg4 again. fizzle. should have dropped the gas. Breakdown was back at 6msec. Bz may be a bit positive. next shot: EF4 more negative by 5A, pg4 back to 30ms |
| Nov 16 2005 01:53:01:910PM | 1051116014 | Steve Wolfe | shot#14: EF4 -1320 to -1325, pg4 from 32 to 30ms Another fizzle. Early breakdown ~5ms, hesitates, then tries to recover, then loses it. next shot: Drop ef4 another 10A |
| Nov 16 2005 02:11:18:440PM | 1051116015 | Steve Wolfe | shot#15: EF4 -1325 to -1335 P0=1.2e-6 at check Another fizzle.Extremely late breakdown ~17msec! Never had a chance, but why? Next shot:Br0 to -.0003 |
| Nov 16 2005 02:19:36:567PM | 1051116016 | Steve Wolfe | shot#16:Br0 to -.0003 plasma to 1.67sec, runaways early (1e13) breakdown at 5.8msec, maybe bouncy D ran with a few faults at 0.5MW, E had the problems this time J is unhappy at 3MW, lots of trips next shot: no pcs changes |
| Nov 16 2005 02:31:08:410PM | 1051116017 | Steve Wolfe | shot#17:no pcs changes plasma full length runaways down, heating up. breakdown a little later, around 6msec next shot: no changes |
| Nov 16 2005 02:44:27:067PM | 1051116018 | Steve Wolfe | shot#18:no pcs changes plasma full length late breakdown 10msec, and a bounce. No runaways though Fields look the same as 17. No ideal which way to tweak anything, try raising pg4 J still looks unhappy. next shot: pg4 to 32msec |
| Nov 16 2005 02:54:47:880PM | 1051116019 | Steve Wolfe | shot#19: pg4 from 30 to 32msec fizzle. I guess I shouldn't have tweaked the gas either. Next shot: pg4 back to 30msec |
| Nov 16 2005 03:10:14:520PM | 1051116020 | Steve Wolfe | shot#20: pg4 from 32 to 30msec plasma full length. some bounciness in startup, but no runaways to speak of. RF still not very steady, except for E at 1.1MW. next shot: drop pg4 another 2msec |
| Nov 16 2005 03:23:24:770PM | 1051116021 | Steve Wolfe | shot#21: pg4 from 30 to 28 msec plasma full length late breakdown 11msec; no runaways one hmode during J pulse at 3MW next: no changes, see if the bd time comes back |
| Nov 16 2005 03:35:54:067PM | 1051116022 | Steve Wolfe | shot#22:no changes, see if the bd time comes back plasma full length; bd back to 6msec, slight hesitation no runaways. two short h-modes during J at 3MW next shot: pg4 to 27msec |
| Nov 16 2005 03:50:12:973PM | 1051116023 | Steve Wolfe | shot#23: pg4 from 28 to 27msec plasma full length. bd at 9msec; big bounce at 20msec, runaways 10^13 next: go to 5.2T (144.4kA). pg4 back to 28msec |
| Nov 16 2005 04:04:53:597PM | 1051116024 | Steve Wolfe | shot#24: pg4 from 27 to 28msec TF in seg2 to 144.4kA (5.2T) plasma full length bd at 5.5msec, no runaways, faulting on all antennas, brief h-modes next: outer gap smaller by 5mm |
| Nov 16 2005 04:16:47:003PM | 1051116025 | Steve Wolfe | shot#25:rcur from .6595 to .6620 (reduce outer gap 5mm) plasma full length, bd at 6ms, no bounce, no hards Outer gap is 1cm (compare 1.5 on #1-24) some h-modes with each antenna. next shot: go to .5cm outer gap |
| Nov 16 2005 04:33:41:880PM | 1051116026 | Steve Wolfe | shot#26:rcur from .6620 to .6645 (reduce outer gap another 5mm) plasma full length, nice looking startup, slight hesitation. more neuts from J than from D,E; D faulted. outer gap at 5mm 2 short hmodes during J, none for E (of course it's half the power) No obvious effect of the small gap next: back to 1cm gap, RF will ramp power |
| Nov 16 2005 04:44:38:130PM | 1051116027 | Steve Wolfe | shot#27:rcur from .6645 to .6620 (increase outer gap 5mm) plasma full length, startup ok gap back to 1cm D faulting repeatedly, E a clean ramp to 1.15MW J ramps to 2.3 with some faulting next: repeat |
| Nov 16 2005 04:59:06:020PM | 1051116028 | Steve Wolfe | shot#28: repeat plasma full length. bd at 6.5msec, no runaways TCI loses fringes at 1.55sec J and E have clean ramps(to 1.75 and 1.3MW respectively), D faults early END OF RUN |
| Engineering Operator Comments | ||||
| Shot | Time | Type | Status | Comment |
| 1 | 09:10:16:527AM | Plasma | Ok | |
| 2 | 09:48:08:660AM | Plasma | Ok | |
| 3 | 10:15:29:253AM | Plasma | Ok | |
| 4 | 11:01:16:363AM | Plasma | Ok | |
| 5 | 11:15:36:393AM | Plasma | Ok | |
| 6 | 11:29:51:940AM | Plasma | Ok | |
| 7 | 11:54:23:817AM | Plasma | Ok | |
| 8 | 12:08:55:690PM | Plasma | Bad | Ack Failure at Pulse |
| 9 | 12:23:57:753PM | Plasma | Bad | No Power Because of Datasystem Problems |
| 10 | 12:46:04:583PM | Plasma | Bad | No Power Shot Act Mon Failure |
| 11 | 01:05:02:317PM | Plasma | Ok | |
| 12 | 01:18:24:380PM | Plasma | Ok | |
| 13 | 01:32:15:630PM | Plasma | Ok | |
| 14 | 01:45:21:190PM | Plasma | Ok | |
| 15 | 01:58:26:973PM | Plasma | Ok | |
| 16 | 02:11:56:300PM | Plasma | Ok | |
| 17 | 02:25:10:317PM | Plasma | Ok | |
| 18 | 02:38:21:690PM | Plasma | Ok | |
| 19 | 02:51:31:020PM | Plasma | Ok | |
| 20 | 03:04:40:113PM | Plasma | Ok | |
| 21 | 03:17:50:223PM | Plasma | Ok | |
| 22 | 03:31:04:550PM | Plasma | Ok | |
| 23 | 03:44:16:753PM | Plasma | Ok | |
| 24 | 03:58:35:067PM | Plasma | Ok | |
| 25 | 04:11:46:880PM | Plasma | Ok | |
| 26 | 04:24:53:973PM | Plasma | Ok | |
| 27 | 04:38:38:160PM | Plasma | Ok | |
| 28 | 04:52:03:630PM | Plasma | Ok | |