Alcator C-Mod Run 1030516 Information

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Miniproposals
Miniproposal:
Date Filed:
Title:
First Author:
Session Leader:Yijun Lin (shots 1-30)
Miniproposal:295
Date Filed: 5/10/2001
Title:Full Characterization of J port antenna performance
First Author:Steve Wukitch
Session Leader:Steve Wukitch (shots 1-30)

Operators
Session leader(s):Yijun Lin,Steve Wukitch
Physics operator(s):Bill Rowan
Engineering operator(s):Bill Byford,Gary Dekow,Bill Cochran

Engineering Operator Run Comment
Purpose: MP 295 High Power RF/Wukitch/Rowan/Cochran.

Session Leader Plans

Physics Operators Plans

Session Leader Summaries

Physics Operator Summaries
Entered: Jul 7 2004 04:37:17:817PM
Author: To Be Determined
Physop Summary for Friday May 16, 2003; Run 1030516

Purpose: MP 295: High Power RF (Wukitch)
Background: Li pellet zonal flow (Marmar)
Session leader: Wukitch
Physics operator: Rowan
Engineering operators: Cochran, Byford, Dekow


Engineering Setup----------------------------------------------------------

ECDC overnight in D2 at 2e-4 Torr, stopping by 07:00.
Bake at 60 C overnight .

Run begins at 09:00 and ends at 17:00.

Power systems the same as on 1030514005

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)

Enable the following gate valves, assuming no vacuum problems:
ECE, DNB, VUV

RF Setup: All 4 transmitters in Run On by 08:00.

Begin the run at 0.8 MA as for the setup shot. Increase to 1 MA.
---------------------------------------------------------------------------

Summary--------------------------------------------------------------------
C-Mod ran well throughout the day. There were some camac problems which
prevented consistent acqusition of data for MSE, neutrons, H/D ratio, and
the ratiomatic. There were two fizzles and two no power shots. The first
was due to high BZ_0. On shots for which H/(H+D) was available, it was
approximately 6%.

Loaded shot 1030514005 to start the run. Used density feedback throughout
the day. A similar shot from the same day (1030514020) was available to
serve as a model if density feedback had been unavailable.

The camac problems limited the number of shots on which data was
available for MSE, neutrons, H/D ratio, BES fast channels, and the
ratiomatic. When the MSE crate was physically removed from the highway,
the neutron data was taken successfully. The motivation for this was a
low voltage on the MSE crate's 6V bus. No other strong correlations
were observed.

See SL log for comments on RF performance.

Lithium pellets were injected during rampdown. See LPI topic for details.

Score card
Plasmas 26
Disruptions 0
Duds 0
No power 2
Fizzles 2
Total 30


Physop Notes--------------------------------------------------------------

Load from 1030514005

Execute load/clean

EO: Cochran

001. Plasma
H-mode at approximatly 0.9s
No ratiomatic as yet.

Next shot: no changes

002. Plasma
Another H-mode. Simiar to the last shot.
No ratiomatic. Assured that this is due to a camac3_server error.
Pause after this shot for a cell access to work on TV cameras

Next shot: no changes

003. Plasma
H-mode
Ratiomatic on this shot.
H/D available as well.

Next shot. No changes

004. Plasma
Problems with camac3_server continue.

Next shot. No changes

005. Plasma

Next shot.
Starting Li injection at approx 1.6 s. Note LPI topic for info.
Li Inj gate valve enabled
No changes.

006. Plasma
Li pellet evident during rampdown.

Next shot. No changes


007. Plasma

Next shot. No changes.

008. Plasma
An apparent power glitch after the shot resulted in camac problems
for engineering highways and rf highway
Pause while crates are checked.

Next shot. No changes.

009. Plasma

Next shot. No changes.

010. Plasma.
EO changed to Byford.

Next shot. No changes.

011. Plasma.

Next shot. No changes

012. Plasma

Next shot. No changes

013. Plasma.

Next shot. No changes.

014. Fizzle

Next shot. Lowered IC_EF4 from -1320 to -1335

015. Plasma

Next shot. Lowered IC_EF4 from -1335 to -1350

016. Plasma

Next shot. Reduced prefill by 1 ms from 27 ms to 26 ms

017. No power shot.
Computer hang during init.

018. No power shot.

019. Plasma

Next shot. No changes.

020. Plasma

Next shot. No changes

021. Plasma.

Next shot. No changes

022. Plasma.
EO: Dekow.

Next shot. No changes.

023. Plasma.

Next shot. No changes.

024. Plasma.

Next shot. No changes

025. Plasma

Next shot. No changes

026. Plasma

Next shot. No changes.

027. Plasma

Next shot. No changes

028. Plasma

Next shot. No changes

030. Fizzle
On the shots on which H/D was available, the values were approximately 6%
Camac problems throughout the day: MSE, BES, neutrons, ratiomatic, H/D
This is the last shot for this run
















Session Leader Comments
May 16 2003 09:13:21:470AM1030516001Yijun Lin1030516001:
Plasma request: 0.8 MA, 5.4 T, nl04 = 1. x 10^20 m^-2, normal SN diverted.
RF request:
D: [0.8, 1.3] sec, .6 MW
E: [0.8, 1.3] sec, .6 MW
J: [0.7, 1.3] sec, 2 x (0.6 MW ), 78 MHz
Result: plasma. H-mode
D: ran. 1 fault. DDC1 level may still be wrong.
E: ran. Several faults later.
J: ran. Many faults. Ran into H-mode

Next: raise D, E, J power.
May 16 2003 09:56:09:690AM1030516002Steve Wukitch002: 0.8 MA, 5.4 T, nl04 = 1. x 10^20 m^-2, normal SN diverted.
D: 0.8 MW [0.8, 1.3] sec
E: 0.8 MW [0.8, 1.3] sec
J: 1.2 MW [0.7, 1.3] sec, 2 x (0.6 MW ), 78 MHz
Result: plasma. H-mode
D: ran. 1 fault. DDC1 level may still be wrong.
E: ran. Several faults later.
J: ran. Many faults. Ran into H-mode
May 16 2003 09:55:53:910AM1030516003Steve Wukitch003 0.8 MA, 5.4 T, nl04~1, lower SN diverted
D: 0.8 MW [0.8,1.3]sec
E: 0.8 MW
J: 1.6 MW [0.7,1.3]
result: plasma
D: 1 MW? 4 faults
E: 0.8 MW 8 faults
J: 1.6 MW max faults
next shot: lower the power on all antennas - try for a clean discharge
May 16 2003 10:44:20:310AM1030516004Steve Wukitch004 0.8 MA, 5.4 T, nl04~1, lower SN diverted
D: 0.6 MW [0.8,1.3]sec
E: 0.4 MW
J: 0.8 MW [0.7,1.3]
result: plasma
D: 0.6 MW? - max faults
E: 0.4 MW max faults - phase balance faults
J: 0.8 MW max faults
next shot: separate antennas - try for a clean discharge
May 16 2003 10:44:32:453AM1030516005Steve Wukitch005 0.8 MA, 5.4 T, nl04~1, lower SN diverted
D: 0.6 MW [1.2,1.5]sec
E: 0.4 MW [0.9,1.2]
J: 0.8 MW [0.6,1.0]
result: plasma
D: 0.6 MW? 1 fault
E: 0.4 MW clean
J: 0.8 MW max faults - bad match
May 16 2003 10:45:07:733AM1030516006Steve Wukitch006 0.8 MA, 5.4 T, nl04~1, lower SN diverted
D: 0.8 MW [1.2,1.5]sec
E: 0.6 MW [0.9,1.2]
J: 0.8 MW [0.6,1.0]
result: plasma
D: 0.8 MW? 2 fault
E: 0.6 MW 1 fault
J: 0.8 MW 2 faults
May 16 2003 10:55:29:280AM1030516007Steve Wukitch007 0.8 MA, 5.4 T, nl04~1, lower SN diverted
D: 1.0 MW [1.2,1.5]sec
E: 0.8 MW [0.9,1.2]
J: 1.2 MW [0.6,1.0]
result: plasma - H-modes
D: 1.0 MW? 2 faults
E: 0.8 MW 4 faults
J: 1.2 MW 5 faults
May 16 2003 12:42:23:587PM1030516009Steve Wukitch009 0.8 MA, 5.4 T, nl04~1, lower SN diverted
D: 1.2 MW [1.2,1.5]sec
E: 1.0 MW [0.9,1.2]
J: 1.2 MW [0.6,1.0]
result: plasma - H-modes
D: 0 no bira
E: 0 no bira
J: 1.2 MW clean
May 16 2003 12:42:53:447PM1030516010Steve Wukitch010 0.8 MA, 5.4 T, nl04~1, lower SN diverted
D: 1.2 MW [1.2,1.5]sec
E: 1.0 MW [0.9,1.2]
J: 1.6 MW [0.6,1.0]
result: plasma - H-modes
D: 5 faults
E: 5 faults - faulting began earlier
J: 1.6 MW multiple faults

raised E phase balance threshold to 2 V
May 16 2003 12:43:05:540PM1030516011Steve Wukitch011 0.8 MA, 5.4 T, nl04~1, lower SN diverted
D: 1.2 MW [1.2,1.5]sec
E: 1.0 MW [0.9,1.2]
J: 1.6 MW [0.6,1.0]
result: plasma - H-modes
D: ? 2 faults
E: 1 MW 3 faults -
J: 1.6 MW 5 faults
May 16 2003 02:10:28:270PM1030516016Yijun LinPlasma request: 0.8 MA, 5.4 T, nl04 = 1. x 10^20 m^-2, normal SN diverted.
RF request:
D: [0.9, 1.2] sec, 1.4 MW
E: [1.2, 1.5] sec, 1.2 MW
J: [0.6, 1.0] sec, 2 x (0.9 MW ), 78 MHz
Result: plasma. H-modes
D: ran. 7 faults
E: ran. 5 faults
J: ran. 4 faults
May 16 2003 02:12:29:397PM1030516017Yijun Linpower system test shot
May 16 2003 02:14:46:760PM1030516018Yijun Linno power shot
May 16 2003 02:50:40:580PM1030516019Yijun LinPlasma request: 0.8 MA, 5.4 T, nl04 = 1. x 10^20 m^-2, normal SN diverted.
RF request:
D: [0.9, 1.2] sec, 1.4 MW
E: [1.2, 1.5] sec, 1.2 MW
J: [0.6, 1.2] sec, 2 x (0.9 MW ), 78 MHz
Result: plasma. H-modes
D: ran.
E: ran. 4 faults
J: ran. 9 faults.
May 16 2003 02:50:01:563PM1030516020Yijun LinPlasma request: 0.8 MA, 5.4 T, nl04 = 1. x 10^20 m^-2, normal SN diverted.
RF request:
D: [0.8, 1.3] sec, 1.3 MW
E: [1., 1.5] sec, 1.1 MW
J: [0.6, 1.5] sec, 2 x (0.9 MW ), 78 MHz
Result: plasma. H-modes
D: ran.
E: ran. 9 faults
J: ran. max faults.
May 16 2003 03:18:16:793PM1030516022Yijun LinPlasma request: 0.8 MA, 5.4 T, nl04 = 1. x 10^20 m^-2, normal SN diverted.
RF request:
D: [0.6, 1.0] sec, 1.2 MW
E: [1., 1.5] sec, 1.1 MW
J: off
Result: plasma. H-modes
D: ran.
E: ran.

Interestingly, DDC1 power seems OK now without J power.
Does it mean that DDC1 measurement is skewed by J-port antenna?
May 16 2003 03:35:13:057PM1030516023Yijun LinPlasma request: 0.8 MA, 5.4 T, nl04 = 1. x 10^20 m^-2, normal SN diverted.
RF request:
D: [0.6, 1.0] sec, 1.1 MW
E: [1., 1.5] sec, 1.1 MW
J: off
Result: plasma. H-modes
D: ran. 7 faults. DC1 signal seems good. Because of no J power?
E: ran. 7 faults.
May 16 2003 03:55:38:130PM1030516024Yijun LinPlasma request: 0.8 MA, 5.4 T, nl04 = 1. x 10^20 m^-2, normal SN diverted.
RF request:
D: [0.9, 1.2] sec, 1.1 MW
E: [1.2, 1.5] sec, 1.1 MW
J: off
Result: plasma. H-modes
D: ran. 1 fault. DDC1 signal still wrong. Bad demodulator in the cell?
E: ran. 3 faults
J: off

J4 screen voltage came back OK after Charley replaced the fuses.
Next shot will have J power.
May 16 2003 04:03:23:313PM1030516025Yijun LinPlasma request: 0.8 MA, 5.4 T, nl04 = 1. x 10^20 m^-2, normal SN diverted.
RF request:
D: [0.9, 1.2] sec, 1.1 MW
E: [1.2, 1.5] sec, 1.1 MW
J: [0.6, 0.9] sec, 2 x 0.9 MW, 78 MHz
Result: plasma. H-modes
D: ran. 3 faults.
E: ran. 3 faults.
J: ran. 7 faults.
May 16 2003 04:15:21:923PM1030516026Yijun LinPlasma request: 0.8 MA, 5.4 T, nl04 = 1. x 10^20 m^-2, normal SN diverted.
RF request:
D: [0.9, 1.2] sec, 1.1 MW
E: [1.2, 1.5] sec, 1.1 MW
J: [0.6, 0.9] sec, 2 x 0.9 MW, 78 MHz
Result: plasma. H-modes
D: ran. clean
E: ran. 3 faults.
J: ran. 7 faults.

May 16 2003 04:29:55:853PM1030516027Yijun LinPlasma request: 0.8 MA, 5.4 T, nl04 = 1. x 10^20 m^-2, normal SN diverted.
RF request:
D: [0.9, 1.2] sec, 1.1 MW
E: [1.2, 1.5] sec, 1.1 MW
J: [0.6, 0.9] sec, 2 x 0.9 MW, 78 MHz
Result: plasma. H-modes
D: ran. clean
E: ran. 3 faults.
J: ran. 8 faults.
May 16 2003 04:42:45:170PM1030516028Yijun LinPlasma request: 0.8 MA, 5.4 T, nl04 = 1. x 10^20 m^-2, normal SN diverted.
RF request:
D: [0.9, 1.2] sec, 1.2 MW
E: [1.2, 1.5] sec, 1.1 MW
J: [0.6, 0.9] sec, 2 x 0.8 MW, 78 MHz
Result: plasma. H-modes
D: ran. 6 faults.
E: ran. 3 faults.
J: ran. clean. In L-mode

Physics Operator Comments
May 16 2003 07:47:55:180AMBill RowanEngineering Setup for Friday May 16, 2003; Run 1030516,
Purpose: MP 295: High Power RF
Background: Li pellet zonal flow
Session leader: Wukitch
Physics operator: Rowan

ECDC overnight in D2 at 2e-4 Torr, stopping by 07:00.
Bake at 60 C overnight .

Run begins at 09:00 and ends at 17:00.

Power systems the same as on 1030514005

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)

Enable the following gate valves, assuming no vacuum problems:
ECE, DNB, VUV

-------------------------------------------------------------------------------
RF Setup: All 4 transmitters in Run On by 08:00.

Begin the run at 0.8 MA as for the setup shot. Increase to 1 MA.
May 16 2003 08:20:19:123AMBill RowanLoad from 1030514005

Execute load/clean

EO: Cochran
May 16 2003 09:07:10:413AM1030516001Bill Rowan001. Plasma

May 16 2003 09:14:48:050AM1030516001Bill RowanH-mode at approximatly 0.9s

Next shot: no changes
May 16 2003 09:25:39:253AM1030516002Bill Rowan002. Plasma
Another H-mode. Simiar to the last shot.

No ratiomatic. Assure that this is due to a camac3_server error.

Next shot: no changes
May 16 2003 09:43:05:000AM1030516002Bill RowanPause after this shot for a cell access to work on TV cameras
May 16 2003 09:51:24:463AM1030516003Bill Rowan003. Plasma
H-mode

Ratiomatic on this shot.
H/D available as well.

Next shot. No changes
May 16 2003 10:05:59:473AM1030516004Bill Rowan004. Plasma

Problems with camac3_server continue.
May 16 2003 10:09:51:150AM1030516004Bill Rowan
Next shot: no changes
May 16 2003 10:24:04:280AM1030516005Bill RowanLi Inj gate valve enabled
May 16 2003 10:25:01:750AM1030516005Bill Rowan
Next shot. No changes.
May 16 2003 10:44:28:420AM1030516006Bill Rowan
Next shot. No changes
May 16 2003 10:57:41:113AM1030516007Bill Rowan007. Plasma

Next shot. No changes.
May 16 2003 11:47:08:207AM1030516008Bill Rowan008. Plasma

An apparent power glitch resulted in camac problems for engineering
highways and rf highway
Pause while crates are checked.
May 16 2003 12:00:51:990PM1030516008Bill RowanNext shot. No changes.
May 16 2003 12:13:33:760PM1030516009Bill Rowan
Next shot. No changes.
May 16 2003 12:27:26:737PM1030516010Bill Rowan010. Plasma.

EO changed to Byford.

Next shot. No changes.
May 16 2003 12:41:28:477PM1030516011Bill Rowan011. Plasma.


Next shot. No changes
May 16 2003 12:53:55:307PM1030516012Bill Rowan012. Plasma

Next shot. No changes
May 16 2003 01:06:09:763PM1030516013Bill Rowan013. Plasma.

Next shot. No changes.
May 16 2003 01:23:16:900PM1030516014Bill Rowan014. Fizzle

Next shot. Lowered IC_EF4 from -1320 to -1335
May 16 2003 01:49:56:503PM1030516016Bill Rowan016. Plasma

Next shot. Reduced prefill by 1 ms from 27 ms to 26 ms
May 16 2003 02:10:29:410PM1030516017Bill Rowan017. No power shot.
Computer hang during init.
May 16 2003 02:12:05:380PM1030516017Bill Rowan018. No power shot.
May 16 2003 02:45:16:540PM1030516020Bill Rowan020. Plasma

Next shot. No changes
May 16 2003 02:51:37:393PM1030516021Bill Rowan021. Plasma.

May 16 2003 03:05:39:040PM1030516021Bill RowanNext shot. No changes
May 16 2003 03:16:27:713PM1030516022Bill Rowan022. Plasma.

EO: Dekow.

May 16 2003 03:28:36:357PM1030516022Bill RowanNext shot. No changes.
May 16 2003 03:34:02:680PM1030516023Bill Rowan023. Plasma
May 16 2003 03:41:38:520PM1030516023Bill RowanNext shot. No changes.
May 16 2003 03:48:53:200PM1030516024Bill Rowan024. Plasma.



May 16 2003 03:54:43:533PM1030516024Bill RowanNext shot. No changes.
May 16 2003 04:11:00:637PM1030516025Bill RowanNext shot. No changes
May 16 2003 04:20:10:510PM1030516026Bill Rowan026. Plasma
May 16 2003 04:23:17:373PM1030516026Bill Rowan
Next shot. No changes.
May 16 2003 04:31:54:467PM1030516027Bill Rowan027. Plasma

Next shot. No changes

May 16 2003 04:42:54:263PM1030516028Bill Rowan028. Plasma

Next shot. No changes
May 16 2003 04:55:54:910PM1030516029Bill Rowan029. Plasma

Next shot. No changes
May 16 2003 05:05:30:550PM1030516030Bill Rowan030. Fizzle
On the shots on which H/D was available, the values were approximately 6%
Camac problems throughout the day: MSE, BES, neutrons, ratiomatic, H/D

Last shot.

Engineering Operator Comments
ShotTimeTypeStatusComment
109:03:29:047AMPlasmaOk
209:19:01:510AMPlasmaOk
309:43:48:703AMPlasmaOk
409:56:49:130AMPlasmaOk
510:11:38:263AMPlasmaOk
610:32:21:920AMPlasmaOk
710:45:28:297AMPlasmaOk
811:05:21:470AMPlasmaOk
912:01:00:693PMPlasmaOk
1012:14:37:090PMPlasmaOk
1112:28:23:020PMPlasmaOk
1212:42:20:180PMPlasmaOk
1312:55:02:543PMPlasmaOk
1401:09:53:003PMPlasmaOk
1501:25:11:760PMPlasmaOk
1601:38:14:517PMPlasmaOk
1702:00:35:893PMTestBad
1802:13:51:480PMTestOkdata system test
1902:21:30:863PMPlasmaOk
2002:34:38:680PMPlasmaOk
2102:47:50:293PMPlasmaOk
2203:08:40:937PMPlasmaOk
2303:30:04:487PMPlasmaOk
2403:42:51:427PMPlasmaOk
2503:55:53:520PMPlasmaOk
2604:11:14:590PMPlasmaOk
2704:24:03:953PMPlasmaOk
2804:36:39:863PMPlasmaOk
2904:49:20:493PMPlasmaOk
3005:02:21:670PMPlasmaOk