Miniproposals

Miniproposal: 214 Date Filed: 1/5/1999 Title: D and E-port RF System Commissioning First Author: Steve Wukitch Session Leader: Steve Wukitch (shots 1-30)

Engineering Operator Run Comment

MP 214 RF Conditioning/Rowan, Goetz/Silva

Session Leader Plans

Physics Operators Plans

Session Leader Summaries

Entered: Jul 7 2004 03:49:19:180PM

Author: To Be Determined

Run Plan for 990219 Miniproposal 214. RF Conditioning Physop: Rowan/Goetz Overnight ECDC in D2 Engineering Setup ------------------ Power supply setup as in shot 990218027 TF under hybrid control Gas setup: B-top 6 psi D2 Hybrid enabled C-side 30 psi D2 hybrid enabled B-side lower 1 psi of Ar hybrid disabled B-side upper 20 psi He, disabled Plan ------------- Run fiducial like shots in order to allow conditioning of RF. Goals ------------- 1. Demonstrate transmitters can run simultaneously to at least 1.25 MW. 2. Demonstrate reasonable power control for both transmitters particularly in H-mode. ST1: 603 PS1: 411 ST2: 2367 PS2: 1050 001 fizzle 002 fizzle 003 plasma good EDA 1.25 MW net power one fault on FMIT#1 H/D~0.04-0.05 next shot: raise power by ~0.5 MW ST1: 595 PS1: 412 ST2: 2598 PS2: 908 004 plasma two EDAs faults on both H/D~0.04-0.05 [-2.18845,-.383501,-.222128] recalculate coefficients for D-port [-1.7498734,0.29566671,-1.5072494] 005 plasma with clean RF D-port is still giving different power for same input voltage new coefficients [-1.8480706,0.33742668,-1.3710986] 006 plasma EDA large injection which terminated the EDA also tripped the RF 007 plasma EDA arcing on #2 next shot: lower drive on #2 008 plasma EDA late fault (associated with injection) next shot: raise drive on both 009 plasma early disruption good RF up to the brick 010 fizzle next shot: changed modulation board (feedback control) on #1 will need to recalculate MW coefficients run the xmtrs separated to get new MW coefficients 011 early disruption 012 plasma late H-mode screen overcurrent on #1 and #1 is oscillating 013 plasma H-mode screen overcurrent on #1 and it is still oscillating 014 plasma H-mode faults on #2 and #1 is still oscillating next shot: lower drive on #2 015 plasma #1 is still oscillating 016 plasma #1 is still oscillating 017 plasma #1 is still oscillating 018 plasma #1 is still oscillating next shot: replace mod-board with one used earlier in run and raise power 019 plasma interesting EDA 020 plasma EDA next shot: increase RF drive and BT sweep for ECE at 0.9 sec 021 fizzle 022 plasma PRF~2.8 MW 023 plasma screen current overload next shot: lower drive and attempt to lock sawteeth with RF modulation 024 plasma injection which kills the RF screen overcurrent on #1 #1 screen voltage is not dumping upon crowbar sawteeth did not lock to 0.5 MW modulation next shot: raise Ip->1.0 MA and modulation 025 plasma 1 MA; lousy RF next shot: lower drive open flappers before shot and close at 1.0 sec 026 plasma no flap 027 plasma faults on E-port are numerous D-port has continued problems ***************** *** SUMMARY *** ***************** Although the RF system performed better than it has lately, we did not accomplish either of the goals. The power feedback gain is insufficient to compensate for changes in total gain of the transmitter. We attempted to modify the feedback during the run, but this was unsuccessful (resulted in power oscillations).

Physics Operator Summaries

Entered: Jul 7 2004 04:37:00:253PM

Author: To Be Determined

Physop Run Summary for 990219 SL: Steve Wukitch PO: Rowan/Goetz EO: Frank Silva Overnight ECDC in D2 Engineering Setup ------------------ Power supply setup as in shot 990218027 TF under hybrid control Gas setup: B-top 6 psi D2 Hybrid enabled C-side 30 psi D2 hybrid enabled B-side lower 1 psi of Ar hybrid disabled B-side upper 20 psi He, disabled The goal was to execute Miniproposal 214. Briefly, the goal was to run fiducial-like shots in order to allow conditioning of RF. Refer to the Session Leader's summary for more detail and for comments on the progress toward conditioning. Note: If the setup for any of these shots is reused later, it should be noted that there is a 5% BT ramp at the end of shots 021 to 030 for ECE calibration. Note: The physop log erroneously states that the flappers were opened on 026. There was an attempt on that shot and on subsequent shots, but these were not successful. Prior to beginning this run, it was noted that Thursday's physop reduced BR slightly to avoid fizzles. We copied the setup for shot 0990217025 from Wednesday. The first two shots were fizzles. BR was lowered as recommended in the phyop log from Thursday, and we started to get plasmas. A vertical position oscillation was brought to the attention of the physops. Modifications were made to the slow feedback on shots 010 and 020 to reduce the oscillation. These appeared to be successful. The ECE-folk requested a 5% BT rampup at the end of the shot for ECE calibration. This was started at 0.85s. After a couple of shots, a rampdown was added at the request of the Session Leader. The current was increased to 1MA on shot 025 at the request of the session leader. This continued until the end of the run. Shot 001. fizzle Shot 002. fizzle Shot 003. plasma. BR offset reduced from 3.5mT to 3.0 mT. Shot 004. plasma Shot 005. plasma Shot 006. plasma Shot 007. plasma Shot 008. plasma Shot 009. plasma. disrupted at 1 s Shot 010. fizzle Shot 011. plasma. disrupted at 0.45 s Shot 012. plasma Shot 013. plasma Shot 014. plasma Shot 015. plasma Shot 016. plasma Shot 017. plasma Shot 018. plasma Shot 019. plasma Shot 020. plasma Shot 021. fizzle. Added 5% BT ramp up from 0.85 s to 1.2 s. Shot 022. plasma Shot 023. plasma Shot 024. plasma. Added BT ramp down after 1.1s Shot 025. plasma. 1 MA on this and subsequent shots Shot 026. plasma Shot 027. plasma Shot 028. plasma Shot 029. plasma Shot 030. plasma Scorecard Plasmas 26 Fizzles 4 Duds 0 Total 30

Session Leader Comments
Feb 19 1999 09:23:35:450AM	990219001	Steve Wukitch	001 fizzle
Feb 19 1999 09:23:46:373AM	990219002	Steve Wukitch	002 fizzle
Feb 19 1999 09:24:19:717AM	990219003	Steve Wukitch	003 plasma good EDA 1.25 MW net power next shot: raise power byabout 0.5 MW
Feb 19 1999 10:06:55:250AM	990219003	Steve Wukitch	004 plasma two EDAs faults on both xmtrs
Feb 19 1999 10:07:17:937AM	990219005	Steve Wukitch	005 plasma with clean RF D-port is still giving different power for same input voltage
Feb 19 1999 10:48:44:750AM	990219006	Steve Wukitch	006 plasma EDA large injection which terminated the EDA also tripped the RF
Feb 19 1999 10:49:14:263AM	990219007	Steve Wukitch	007 plasma EDA arcing on #2 next shot: lower #2 drive
Feb 19 1999 10:49:38:187AM	990219008	Steve Wukitch	008 plasma EDA late fault (associated with injection) next shot: increase drive on #1 and #2
Feb 19 1999 11:10:15:170AM	990219009	Steve Wukitch	009 plasma early disruption good RF up to the brick
Feb 19 1999 11:32:35:700AM	990219010	Steve Wukitch	010 fizzle next shot: changed modulation board (feedback control) on #1 will need to recalculate MW coefficients run the xmtrs separated to get new MW coefficients
Feb 19 1999 11:39:52:733AM	990219011	Steve Wukitch	011 early disruption near crossover
Feb 19 1999 12:16:14:170PM	990219012	Steve Wukitch	012 plasma late H-mode screen overcurrent on #1 and #1 is oscillating
Feb 19 1999 01:14:37:890PM	990219013	Steve Wukitch	013 plasma H-mode screen overcurrent on #1 and it is still oscillating
Feb 19 1999 01:14:55:280PM	990219014	Steve Wukitch	014 plasma H-mode screen overcurrent on #1 and it is still oscillating
Feb 19 1999 01:15:08:530PM	990219015	Steve Wukitch	015 plasma #1 is still oscillating
Feb 19 1999 01:15:26:687PM	990219016	Steve Wukitch	016 plasma #1 is still oscillating
Feb 19 1999 01:15:41:607PM	990219017	Steve Wukitch	017 plasma #1 is still oscillating
Feb 19 1999 02:12:53:967PM	990219018	Steve Wukitch	018 plasma #1 is still oscillating next shot: replace mod-board with one used earlier in run and raise power
Feb 19 1999 02:13:04:653PM	990219019	Steve Wukitch	019 plasma interesting EDA
Feb 19 1999 02:13:16:590PM	990219020	Steve Wukitch	020 plasma EDA next shot: increase RF drive and BT sweep for ECE at 0.9 sec
Feb 19 1999 02:41:59:200PM	990219021	Steve Wukitch	021 fizzle
Feb 19 1999 02:46:19:793PM	990219022	Steve Wukitch	022 plasma PRF~2.8 MW
Feb 19 1999 02:46:34:640PM	990219023	Steve Wukitch	023 plasma screen current overload
Feb 19 1999 02:58:35:577PM	990219023	Steve Wukitch	next shot: lower drive and attempt to lock sawteeth with RF modulation
Feb 19 1999 03:06:45:840PM	990219024	Steve Wukitch	024 plasma EDA injection which kills the RF screen overcurrent on #1 next shot: raise Ip->1.0 MA
Feb 19 1999 04:02:42:187PM	990219025	Steve Wukitch	025 plasma 1 MA; lousy RF
Feb 19 1999 04:03:09:013PM	990219026	Steve Wukitch	026 plasma no flap

Physics Operator Comments
Feb 19 1999 08:09:48:750AM		Bill Rowan	Miniproposal 214. RF Conditioning Physop: Rowan/Goetz Overnight ECDC in D2 Engineering Setup ------------------ Power supply setup as in shot 990218027 TF under hybrid control Gas setup: B-top 6 psi D2 Hybrid enabled C-side 30 psi D2 hybrid enabled B-side lower 1 psi of Ar hybrid disabled B-side upper 20 psi He, disabled Hybrid coldstart at 7:50. No errors Loaded shot 990217025
Feb 19 1999 08:57:51:170AM	990219001	Bill Rowan	Miniproposal 214. RF Conditioning Shot 001. fizzle Next shot: BR offset to 3.5 mT from 4.5 mT
Feb 19 1999 09:12:02:543AM	990219002	Bill Rowan	Shot 002. fizzle Next shot: BR offset to 3.0 mT from 3.5 mT EF4 to -1280A to reduce BZ
Feb 19 1999 09:18:43:733AM	990219003	Bill Rowan	Shot 003. Shot ran 1.71s
Feb 19 1999 09:22:12:140AM	990219003	Bill Rowan	Session leader requested a modification to outer gap to hold at 1 cm
Feb 19 1999 09:48:45:450AM	990219004	Bill Rowan	Shot 004. Outer gap is approx 1 cm. Next shot: Moved Ar puff 10 ms earlier
Feb 19 1999 09:58:46:043AM	990219005	Bill Rowan	Shot 005. Next shot: Move Ar puff 10 ms earlier
Feb 19 1999 10:24:44:513AM	990219006	Bill Rowan	Shot 006. Shot ended at 1.7s. Next shot: no changes
Feb 19 1999 10:40:22:060AM	990219007	Bill Rowan	Shot 007. Plasma Next shot: no changes
Feb 19 1999 10:48:07:420AM	990219008	Bill Rowan	Shot 008. Plasma Next shot: no changes
Feb 19 1999 11:04:30:687AM	990219009	Bill Rowan	Shot 009. Disruption at 1s. Large injection. Next shot: no changes
Feb 19 1999 11:21:29:420AM	990219009	Bill Rowan	Shot 010. Fizzle Power room access and cell access after this shot. Changed slow ZCUR to remove z oscillation
Feb 19 1999 11:35:23:250AM	990219010	Bill Rowan	Shot 010. Fizzle Power room access and cell access after this shot. Changed slow ZCUR to remove z oscillation
Feb 19 1999 11:36:21:873AM	990219011	Bill Rowan	Shot 011. Disruption at 450 ms during OH1 crossover Next shot: no changes
Feb 19 1999 11:42:30:483AM	990219011	Bill Rowan	Shot 011. Disruption at 0.45s during OH1 crossover Next shot: no changes
Feb 19 1999 11:57:19:077AM	990219012	Bill Rowan	Shot 012. Plasma. 1.7s Power room access for RF after this shot Next shot: no changes
Feb 19 1999 12:12:39:590PM	990219013	Bill Rowan	Shot 013. Plasma Power room access for RF after this shot Next shot: no changes
Feb 19 1999 12:31:21:983PM	990219013	Bill Rowan	Shot 014. Plasma Power room access for RF after this shot. Next shot: no changes
Feb 19 1999 12:43:38:827PM	990219015	Bill Rowan	Shot 015. Plasma Power room access for RF after this shot. Next shot: no changes
Feb 19 1999 01:02:41:920PM	990219016	Bill Rowan	Shot 016. Plasma Next shot: no changes
Feb 19 1999 01:16:19:140PM	990219016	Bill Rowan	Shot 017. Plasma Next shot: no changes
Feb 19 1999 01:28:39:873PM	990219018	Bill Rowan	Shot 018. Plasma Cell access after this shot. Next shot: Changed slow ZCUR to attempt to reduce z oscillation
Feb 19 1999 01:44:21:043PM	990219018	Bill Rowan	Shot 018. Plasma Cell access after this shot. Next shot: Changed slow ZCUR to attempt to reduce z oscillation
Feb 19 1999 01:50:15:560PM	990219019	Bill Rowan	Shot 019. Plasma Next shot: no changes
Feb 19 1999 02:08:07:513PM	990219020	Bill Rowan	Shot 020. Plasma Next shot: BT sweep 0.9s to 1.2 s
Feb 19 1999 02:17:18:653PM	990219021	Bill Rowan	Shot 021. fizzle Next shot: No changes
Feb 19 1999 02:34:20:623PM	990219022	Bill Rowan	Shot 022. plasma. Apparent injection at 1s Next shot: No changes
Feb 19 1999 02:44:56:310PM	990219023	Bill Rowan	Shot 023. plasma. Apparent injection at 1s Next shot: Add a down-jog in BT after 1.1 s
Feb 19 1999 03:29:25:530PM	990219024	Bill Rowan	Shot 024. plasma Power room access after this shot. Next shot: Increase current to 1 MA
Feb 19 1999 03:40:57:140PM	990219025	Bill Rowan	Shot 025. plasma Next shot: Changed EF4 to attempt to improve current rise
Feb 19 1999 03:50:29:030PM	990219025	Bill Rowan	Shot 025. plasma Next shot: Changed EF4 to attempt to improve current rise
Feb 19 1999 04:02:59:873PM	990219026	Bill Rowan	Shot 026. plasma Flappers opened and closed at 1 s Cell access after this shot to assure that omegatron insertion drive was not stuck Next shot: Changed EF4 again to attempt to improve current rise
Feb 19 1999 04:25:06:560PM	990219027	Bill Rowan	Shot 027. plasma Next shot: Increased outer gap at request of session leader
Feb 19 1999 04:30:53:153PM	990219028	Bill Rowan	Shot 028. plasma Next shot: Increased outer gap at request of session leader
Feb 19 1999 05:03:59:937PM	990219030	Bill Rowan	Shot 030. plasma Last shot

Engineering Operator Comments
Shot	Time	Type	Status	Comment
1	08:46:41:857AM	Plasma	Ok	no faults/fizzel
2	09:00:33:030AM	Plasma	Ok	no faults/fizzel
3	09:13:37:000AM	Plasma	Ok	no faults/plasma
4	09:31:15:123AM	Plasma	Ok	no faults/plasma
5	09:49:51:467AM	Plasma	Ok	no faults/plasma
6	10:06:20:653AM	Plasma	Ok	no faults/plasma
7	10:25:22:000AM	Plasma	Ok	no faults/plasma
8	10:38:42:170AM	Plasma	Ok	no faults/plasma
9	10:56:51:670AM	Plasma	Ok	no faults/plasma dis
10	11:12:02:000AM	Plasma	Ok	no faults
11	11:27:40:403AM	Plasma	Ok	OH1 SPCkt. fired/Disruption
12	11:40:39:060AM	Plasma	Ok	no faults/plasma
13	12:00:19:030PM	Plasma	Ok	no faults/plasma
14	12:15:04:827PM	Plasma	Ok	no faults/plasma
15	12:30:50:403PM	Plasma	Ok	no faults/plasma
16	12:49:40:653PM	Plasma	Ok	no faults/plasma
17	01:03:25:013PM	Plasma	Ok	no faults/plasma
18	01:20:47:810PM	Plasma	Ok	No Faults / Plasma
19	01:36:48:000PM	Plasma	Ok	No Faults / Plasma
20	01:51:49:390PM	Plasma	Ok	No Faults / Plasma
21	02:09:57:530PM	Plasma	Ok	No Faults
22	02:23:12:670PM	Plasma	Ok	No Faults / Plasma
23	02:38:15:840PM	Plasma	Ok	No Faults / Plasma
24	02:58:53:373PM	Plasma	Ok	no faults/plasma
25	03:30:57:937PM	Plasma	Ok	No Faults / Plasma
26	03:46:29:293PM	Plasma	Ok	No Faults / Plasma
27	04:10:07:310PM	Plasma	Ok	No Faults / Plasma
28	04:24:22:293PM	Plasma	Ok	No Faults / Plasma
29	04:41:12:030PM	Plasma	Ok	No Faults / Plasma
30	04:59:11:233PM	Plasma	Ok	No Faults / Plasma