Miniproposals

Miniproposal: Date Filed: Title: First Author: Session Leader: Jim Irby (shots 1-21)

Engineering Operator Run Comment

Plasma Conditioning-RF Conditioning-DNB Testing.Marmar/Irby/Fitzgerald/C

Session Leader Plans

Physics Operators Plans

Session Leader Summaries

Entered: Jul 7 2004 03:49:26:273PM

Author: To Be Determined

Session Leader Summary for Run 1010525 SS: Irby PO: Marmar EO: Fitzgerald The machine ran very well today with full length discharges being obtained from early on in the run. Progress was made on all the topics planned for the run. The reasons of today's run were to continue plasma conditioning, bring up the DNB and related diagnostics, and the rf. Signal to noise of the MSE system is said to be very good with signals seen on all channels. On shot 14, 250kW of power was delivered by both D and E antennas, and 1 MW total was delivered reliably the rest of the day. The H/D ratio was very high (>2) all day, so there was very little chance of seeing any heating. Most of the fueling was from the wall rather than the D2 puff. The new Penning gauges are working and some tests of the divertor BC gauge with the BC flapper in operation were made. Preliminary results from these tests indicate rather low gas flow through the flapper. The rotation measurements were brought back online today. Some oxygen was seen by the McPherson during the rf pulses, but no carbon. Finally, the OH2L coax resistance is back down to its nominal value.

Physics Operator Summaries

Entered: Jul 7 2004 04:37:13:050PM

Author: To Be Determined

Engineering setup for run 1010525 Plasma Conditioning --- RF Conditioning --- DNB Testing Start from plasma shot 1010524016 OH/TF Fizzle delays at 700 and 800 ms ECDC in D2 at 2e-4 Torr, overnight. Be prepared for ECDC between shots 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 nothing Hybrid DISABLED fill C-side with 30 psi of D2 Hybrid Enabled fill J-bottom with nothing Hybrid DISABLED Please have XMTRs 1 and 2 warmed up by 7:30 Please have main power for XMTRs 3 and 4 on. Run scheduled to start at 09:00 and end at 17:00. The machine cleaned up substantially today, and we were able to run many shots into rampdown. There was essentially no deuterium puffed after .4 seconds in the shots; the discharges ran off of wall inventory. H/D rose steadily through the day, being more than 2/1 by the end. We did not ECDC during the run. The RF ran into plasma for the first time this year, with both D and E delivering power. The DNB was operational on most plasma shots. MSE was getting decent signals. Chromex was used to look for CXRS from carbon, and boron, as well as helium which was puffed on a few shots (16, 17, & 18). Scorecard: Plasmas 16 Fizzles 5 Tests 0 Total cycles 21 ---------------------------------------------------------------------------- 1010525xxx marmar PHYSICS_OPERATOR May 25 2001 8:07:25:663AM . . . . . . . . . . . . . . . . . . . . Hybrid coldstart no errors; all matrices respond ----------------------------------------------------------------------------- 1010525001 marmar PHYSICS_OPERATOR May 25 2001 8:22:34:850AM . . . . . . . . . . . . . . . . . . . . load from 1010524016 increase prepuff to 15 msec reduce I_p program to 650 kA enable argon fizzle ----------------------------------------------------------------------------- 1010525002 marmar PHYSICS_OPERATOR May 25 2001 9:34:22:673AM . . . . . . . . . . . . . . . . . . . . no PCS changes DNB will be increasing their contribution to the pre-fill plasma disrupt at .575 s some hards ----------------------------------------------------------------------------- 1010525003 marmar PHYSICS_OPERATOR May 25 2001 9:51:01:736AM . . . . . . . . . . . . . . . . . . . . reduce prepuff to 10 msec fizzle ----------------------------------------------------------------------------- 1010525004 marmar PHYSICS_OPERATOR May 25 2001 10:06:05:203AM . . . . . . . . . . . . . . . . . . . . reduce prepuff to 5 msec plasma disrupt at 1.2 s ----------------------------------------------------------------------------- 1010525005 marmar PHYSICS_OPERATOR May 25 2001 10:29:31:060AM . . . . . . . . . . . . . . . . . . . . add .5 mT to BR_0 offset plasma made it into rampdown still hards early ----------------------------------------------------------------------------- 1010525006 marmar PHYSICS_OPERATOR May 25 2001 10:50:29:696AM . . . . . . . . . . . . . . . . . . . . DNB moving start time to 0.8 seconds prepuff to 15 msec plasma more hards ----------------------------------------------------------------------------- 1010525007 marmar PHYSICS_OPERATOR May 25 2001 11:14:25:383AM . . . . . . . . . . . . . . . . . . . . add early gas (after 25 msec) plasma hards still there, but lower level too much gas, disrupts at .51 s ----------------------------------------------------------------------------- 1010525008 marmar PHYSICS_OPERATOR May 25 2001 11:38:50:600AM . . . . . . . . . . . . . . . . . . . . ease back on the early gas I_p to 700 kA plasma ----------------------------------------------------------------------------- 1010525009 marmar PHYSICS_OPERATOR May 25 2001 11:58:45:233AM . . . . . . . . . . . . . . . . . . . . prepuff to 18 msec I_p to 750 kA plasma no hards ----------------------------------------------------------------------------- 1010525010 marmar PHYSICS_OPERATOR May 25 2001 12:15:26:623PM . . . . . . . . . . . . . . . . . . . . I_p to 800 kA fizzle ----------------------------------------------------------------------------- 1010525011 marmar PHYSICS_OPERATOR May 25 2001 12:52:08:426PM . . . . . . . . . . . . . . . . . . . . increase prepuff to 20 msec plasma big density rise around .5 s (marfe?); survived ----------------------------------------------------------------------------- 1010525012 marmar PHYSICS_OPERATOR May 25 2001 1:14:42:133PM . . . . . . . . . . . . . . . . . . . . no pcs changes plasma same early density rise (~0.5 s); did not survive this time ----------------------------------------------------------------------------- 1010525013 marmar PHYSICS_OPERATOR May 25 2001 1:38:29:236PM . . . . . . . . . . . . . . . . . . . . back off on early puff reduce I_p prog to 700 kA early fizzle ----------------------------------------------------------------------------- 1010525014 marmar PHYSICS_OPERATOR May 25 2001 2:08:29:603PM . . . . . . . . . . . . . . . . . . . . reduce B_R offset by .5 mT plasma hards are back ----------------------------------------------------------------------------- 1010525015 marmar PHYSICS_OPERATOR May 25 2001 2:23:13:806PM . . . . . . . . . . . . . . . . . . . . Increase prepuff to 22 msec plasma no hards ----------------------------------------------------------------------------- 1010525016 marmar PHYSICS_OPERATOR May 25 2001 2:57:14:683PM . . . . . . . . . . . . . . . . . . . . adding a He-4 puff using B-side upper PG2, 6 psi 50 msec gate starting at 0.6 seconds plasma disrupt at 1.1 second, during RF (had up to 1.5 MW from D+E) ----------------------------------------------------------------------------- 1010525017 marmar PHYSICS_OPERATOR May 25 2001 3:32:06:153PM . . . . . . . . . . . . . . . . . . . . move He puff earlier & double length (0.4 to 0.5 seconds) plasma ----------------------------------------------------------------------------- 1010525018 marmar PHYSICS_OPERATOR May 25 2001 3:44:54:183PM . . . . . . . . . . . . . . . . . . . . no pcs changes RF to start earlier and stay on longer DNB firing in the middle of the RF pulse plasma disrupt at 1.35 s, during rf ----------------------------------------------------------------------------- 1010525019 marmar PHYSICS_OPERATOR May 25 2001 4:11:15:480PM . . . . . . . . . . . . . . . . . . . . disable helium puff (B-side upper, PG2) one flapper (B-C) will open at .5 s fizzle ----------------------------------------------------------------------------- 1010525020 marmar PHYSICS_OPERATOR May 25 2001 4:37:36:556PM . . . . . . . . . . . . . . . . . . . . no pcs changes plasma ----------------------------------------------------------------------------- 1010525021 marmar PHYSICS_OPERATOR May 25 2001 4:52:58:183PM . . . . . . . . . . . . . . . . . . . . no pcs changes plasma

Session Leader Comments
May 25 2001 09:22:02:540AM	1010525001	Jim Irby	Fizzle --- too much gas? OH2L at 1.02 uOhms
May 25 2001 09:40:21:577AM	1010525002	Jim Irby	Plasma --- almost 600 ms Oh2L coax at 1.28 uOhms
May 25 2001 09:56:23:357AM	1010525003	Jim Irby	Fizzle 1.15 uOhm on OH2L coax
May 25 2001 10:05:54:267AM	1010525004	Jim Irby	Plasma for 1.2 s Coax at 0.805 uOhms Time (ms): 0 5 10 25 ---------------------------------------- Ip (kA): 2.0109 -10.9598 -29.0962 -57.6547 dIp/dt (kA/ms): -1.1467 -3.0519 -1.7803 -5.2138 pressure (mTorr): 0.0586 0.0606 0.0586 0.0473 Bz0 (mT): -4.3669 -2.3363 -0.5845 18.1847 Br0 (mT): -0.8887 -0.5090 -1.1587 -1.8070
May 25 2001 10:35:06:807AM	1010525005	Jim Irby	Plasma for 1.67 s, some hards oh2l 0.811 uOhm
May 25 2001 10:55:04:673AM	1010525006	Jim Irby	Plasma to 1.67 s OH2L coax to 0.681 uOhm John Rice reports rotation measurements back online Jim Terry going into cell after this shot to align CII detector
May 25 2001 11:12:18:347AM	1010525007	Jim Irby	Jim Terry reports that the CII was well aligned. He will cross check call with VUV. The carbon levels are very low for this soon after an up-to-air. Lost plasma at around 0.5 s. Added early gas to kill hards, but killed plasma too. coax at 0.595 uohm
May 25 2001 11:45:23:537AM	1010525008	Jim Irby	Plasma into rampdown coax repeats at 0.592 uohm Brian reports that Penning gauges are working but uncalibrated as yet.
May 25 2001 12:07:19:250PM	1010525009	Jim Irby	Plasma to rampdown Oh2l coax 0.52 uohm
May 25 2001 12:57:53:470PM	1010525010	Jim Irby	Fizzle
May 25 2001 12:58:21:317PM	1010525011	Jim Irby	Plasma --- big MARFE
May 25 2001 01:15:02:260PM	1010525012	Jim Irby	Plama to 0.62 s, another MARFE.
May 25 2001 01:54:57:823PM	1010525013	Jim Irby	Fizzle
May 25 2001 02:56:53:730PM	1010525014	Jim Irby	Plasma into rampdown approx 250 kW each from D&E !!
May 25 2001 02:48:56:273PM	1010525015	Jim Irby	Plasma into rampdown
May 25 2001 03:00:12:017PM	1010525016	Jim Irby	Plasma to 1.1 s, rf probably did us in. Will drop rf power somewhat on next shot. Bruce sees helium, but without much effect of beam.
May 25 2001 03:15:26:490PM	1010525017	Jim Irby	Plasma to rampdown --- clean 1 MW rf
May 25 2001 03:47:50:287PM	1010525018	Jim Irby	Plasma for 1.34 s or so, lots of gas, gatevalves close, IGT off Time (ms): 0 5 10 25 ---------------------------------------- Ip (kA): -0.5832 -10.9598 -29.1190 -81.0248 dIp/dt (kA/ms): -1.2739 -2.7965 -2.6705 -6.1028 pressure (mTorr): 0.0715 0.0756 0.0707 0.0653 Bz0 (mT): -3.8580 -1.3866 0.2258 17.3257 Br0 (mT): -0.4856 -0.6364 -1.2237 -1.3595 dIp/dt getting back to normal...
May 25 2001 04:19:06:387PM	1010525019	Jim Irby	Fizzle
May 25 2001 04:40:44:703PM	1010525020	Jim Irby	Plasma to rampdown BC flapper toggles -- maybe see effects on Penning gauge
May 25 2001 05:40:52:827PM	1010525021	Jim Irby	Plasma to rampdown Brian gets good flapper/Penning gauge data

Physics Operator Comments
May 25 2001 08:07:01:757AM		Earl Marmar	Engineering setup for run 1010525 Plasma Conditioning --- RF Conditioning --- DNB Testing Start from plasma shot 1010524016 OH/TF Fizzle delays at 700 and 800 ms ECDC in D2 at 2e-4 Torr, overnight. Be prepared for ECDC between shots 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 nothing Hybrid DISABLED fill C-side with 30 psi of D2 Hybrid Enabled fill J-bottom with nothing Hybrid DISABLED Please have XMTRs 1 and 2 warmed up by 7:30 Please have main power for XMTRs 3 and 4 on. Run scheduled to start at 09:00 and end at 17:00.
May 25 2001 08:07:25:663AM		Earl Marmar	Hybrid coldstart no errors; all matrices respond
May 25 2001 08:22:34:850AM	1010525001	Earl Marmar	load from 1010524016 increase prepuff to 15 msec reduce I_p program to 650 kA enable argon
May 25 2001 09:16:55:187AM	1010525001	Earl Marmar	fizzle
May 25 2001 09:34:22:673AM	1010525002	Earl Marmar	no PCS changes DNB will be increasing their contribution to the pre-fill plasma disrupt at .575 s some hards
May 25 2001 09:51:01:737AM	1010525003	Earl Marmar	reduce prepuff to 10 msec fizzle
May 25 2001 10:06:05:203AM	1010525004	Earl Marmar	reduce prepuff to 5 msec plasma disrupt at 1.2 s
May 25 2001 10:29:31:060AM	1010525005	Earl Marmar	add .5 mT to BR_0 offset plasma made it into rampdown still hards early
May 25 2001 11:16:39:887AM	1010525006	Earl Marmar	DNB moving start time to 0.8 seconds prepuff to 15 msec plasma more hards
May 25 2001 11:14:25:383AM	1010525007	Earl Marmar	add early gas (after 25 msec) plasma hards still there, but lower level too much gas, disrupts at .51 s
May 25 2001 11:38:50:600AM	1010525008	Earl Marmar	ease back on the early gas I_p to 700 kA plasma
May 25 2001 11:58:45:233AM	1010525009	Earl Marmar	prepuff to 18 msec I_p to 750 kA plasma no hards
May 25 2001 12:15:26:623PM	1010525010	Earl Marmar	I_p to 800 kA fizzle
May 25 2001 12:52:08:427PM	1010525011	Earl Marmar	increase prepuff to 20 msec plasma big density rise around .5 s (marfe?); survived
May 25 2001 01:14:42:133PM	1010525012	Earl Marmar	no pcs changes plasma same early density rise (~0.5 s); did not survive this time
May 25 2001 01:38:29:237PM	1010525013	Earl Marmar	back off on early puff reduce I_p prog to 700 kA early fizzle
May 25 2001 02:08:29:603PM	1010525014	Earl Marmar	reduce B_R offset by .5 mT plasma hards are back
May 25 2001 02:23:13:807PM	1010525015	Earl Marmar	Increase prepuff to 22 msec plasma no hards
May 25 2001 02:57:14:683PM	1010525016	Earl Marmar	adding a He-4 puff using B-side upper PG2, 6 psi 50 msec gate starting at 0.6 seconds plasma disrupt at 1.1 second, during RF (had up to 1.5 MW from D+E)
May 25 2001 03:32:06:153PM	1010525017	Earl Marmar	move He puff earlier & double length (0.4 to 0.5 seconds) plasma
May 25 2001 03:44:54:183PM	1010525018	Earl Marmar	no pcs changes RF to start earlier and stay on longer DNB firing in the middle of the RF pulse plasma disrupt at 1.35 s, during rf
May 25 2001 04:11:15:480PM	1010525019	Earl Marmar	disable helium puff (B-side upper, PG2) one flapper (B-C) will open at .5 s fizzle
May 25 2001 04:37:36:557PM	1010525020	Earl Marmar	no pcs changes plasma
May 25 2001 04:52:58:183PM	1010525021	Earl Marmar	no pcs changes plasma

Engineering Operator Comments
Shot	Time	Type	Status	Comment
1	09:08:21:827AM	Plasma	Ok
2	09:24:57:500AM	Plasma	Ok
3	09:43:10:240AM	Plasma	Ok
4	09:58:29:613AM	Plasma	Ok
5	10:16:12:160AM	Plasma	Ok
6	10:40:45:537AM	Plasma	Ok
7	11:03:14:220AM	Plasma	Ok
8	11:24:32:183AM	Plasma	Ok
9	11:48:36:713AM	Plasma	Ok
10	12:13:43:607PM	Plasma	Ok
11	12:36:20:983PM	Plasma	Ok
12	01:09:36:310PM	Plasma	Ok
13	01:34:15:540PM	Plasma	Ok
14	01:51:38:953PM	Plasma	Ok
15	02:19:24:800PM	Plasma	Ok
16	02:44:45:390PM	Plasma	Ok
17	03:08:52:833PM	Plasma	Ok
18	03:33:45:987PM	Plasma	Ok
19	03:59:48:267PM	Plasma	Bad	EF1 Type 1 Fault
20	04:24:31:743PM	Plasma	Ok	All Power Supplies Fired, no faults
21	04:50:49:273PM	Plasma	Ok