Alcator C-Mod Run 1060621 Information

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Miniproposals
Miniproposal:
Date Filed:
Title:
First Author:
Session Leader:Steve Wukitch (shots 1-25)

Operators
Session leader(s):Steve Wukitch
Physics operator(s):Bill Rowan
Engineering operator(s):

Engineering Operator Run Comment
MP330 Localization of the effect of Boronization SL:Wukitch, PO Rowan, E

Session Leader Plans
Entered: Jun 21 2006 08:57:16:687AM
Author: Steve Wukitch
Engineering setup for Wednesday 21-June-2006
MP330 Localization of the effect of Boronization

Session leader: Wukitch
Physics operator: Rowan

Overnight ECDC in D2, and bake at 60 C.

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

Power systems as on 1060613039 (1.0 MA fiducial, 5.4 T, LSN)

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 + 2 psi Ne Hybrid DISABLED (PG1)
fill B-side upper with 15 psi 3He Hybrid enabled
fill B-main (C-side) with 40 psi D2 Hybrid enabled (PG3)
fill NINJA with 12 psi D2 Enabled

** 3He 100 msec puff at 0.2 sec

*** Boronization system set up for between-shot boronization before
the run but do not open the diborane bottle.

*** All between shot boronizations (BSB) 10 minutes. Each sweep 200
seconds with a 20 second pause. All sweeps are 65-75 cm with pause
at 70 cm. Boronization pressure set to 5 mTorr.

Enable the following gate valves and shutters, assuming no vacuum problems:
ECE, VUV, Z-bolo shutters; these must be disabled for between-shot boronization

The A-Side TV camera shutter must be CLOSED before the boronizations
(before the run and for the rest of the day).
The MSE shutter must be CLOSED before the start of the run, and remain closed
throughout the day.

Important Diagnostics: standard impurity spectroscopy, Mo source
monitor, McPherson, emissive probe

-------------------------------------------------------------------------------
ICRF Setup: FMIT#1,2,3&4 in run-on by 8:30.
-------------------------------------------------------------------------------
Plan: use 1 MA, 5.1 T, nl_04~1

A) No boronization comparison:
1060613039 LSN - 2-3 shots with J, D/E at different times.

B) Boronization erosion dependence on antenna (8 shots + 4 BSB's)
1) BSB followed by a D/E heating shot
2) J heating shot
3) BSB followed by J heating shot
4) D/E heating shot
5) BSB followed by two D/E heated discharges
6) BSB followed by two J heated discharges

may repeat 1-4 depending upon results
C) use -90 and +90 and repeat B1-4
D) (5 shots) Upper single null plasma, H-mode power threshold
comparison. (1060620002 except Ip-> 1 MA)
-------------------------------------------------------------------------------

Physics Operators Plans
Entered: Jun 20 2006 03:21:31:913PM
Author: Bill Rowan
Engineering setup and Physop plan for Tuesday, 20-Jun-2006
-----------------------------------------------------------

MP330 Localization of the effect of Boronization

Session leader: Wukitch
Physics operator: Rowan

Overnight ECDC in D2, and bake at 60 C.

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

Power systems as on 1060613039 (1.0 MA fiducial, 5.1 T, LSN)

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 + 2 psi Ne Hybrid DISABLED (PG1)
fill B-side upper with 15 psi 3He Hybrid enabled
fill B-main (C-side) with 40 psi D2 Hybrid enabled (PG3)
fill NINJA with 12 psi D2 Enabled

** 3He 100 msec puff at 0.2 sec

*** Boronization system set up for between-shot boronization before
the run but do not open the diborane bottle.

*** All between shot boronizations (BSB) 10 minutes. Each sweep 200
seconds with a 20 second pause. All sweeps are 65-75 cm with pause
at 70 cm. Boronization pressure set to 5 mTorr.

Enable the following gate valves and shutters, assuming no vacuum problems:
ECE, VUV, Z-bolo shutters; these must be disabled for between-shot boronization
Do not enable DNB gate valve.
TORVAC gate valves open during pulse

The A-Side TV camera shutter must be CLOSED before the boronizations
(before the run and for the rest of the day).
The MSE shutter must be CLOSED before the start of the run, and remain closed
throughout the day.

Important Diagnostics: standard impurity spectroscopy, Mo source
monitor, McPherson, emissive probe

-------------------------------------------------------------------------------
ICRF Setup: FMIT#1,2,3&4 in run-on by 8:30.
-------------------------------------------------------------------------------

Session Leader Summaries
Entered: Jun 22 2006 04:09:53:547PM
Author: Steve Wukitch
Run Summary:

Despite an abbreviated run, we started the boronization erosion study
comparing D(H) (D+E antennas) versus D(3He). The overall plasma
performance was not reaching the 145 kJ we obtained in the April run
at 5.4 T but we obtained reasonable comparison for two post
boronization sequences. Surprisingly, the D(3He) was not particularly
worse (difference was <10% and there was some indication that) than
D(H) with respect to boronization erosion. There are some observations
that D(3He) has a stronger edge interaction: D-alpha increases
significantly and the Prad is higher in L-mode.

Physics Operator Summaries

Session Leader Comments
Jun 21 2006 10:29:03:883AM1060621001Steve Wukitch001 BT~5.1 T, Ip~1, nl04~0.8, LSN, 100 msec @0.2 sec 3He, heating phase (dig phase=10)
D: 1-1.25 MW [1.2,1.5]sec
E: 1-1.25 MW [1.2,1.5]sec
J: 2-2.5 MW [.7,1]sec
result: plasma - disruption @0.5 sec

Jun 21 2006 10:30:42:523AM1060621002Steve Wukitchdud
Jun 21 2006 04:12:09:063PM1060621003Steve Wukitch003 BT~5.1 T, Ip~1, nl04~0.8, LSN, 100 msec @0.2 sec 3He, heating phase (dig phase=10)
D: 1-1.25 MW [1.2,1.5]sec
E: 1-1.25 MW [1.2,1.5]sec
J: 2-2.5 MW [.7,1]sec
result: plasma - disruption @0.5 sec
Jun 21 2006 11:22:47:617AM1060621004Steve Wukitch004 BT~5.1 T, Ip~1, nl04~0.8, LSN, no 3He, heating phase (dig phase=10)
D: 1-1.25 MW [1.2,1.5]sec
E: 1-1.25 MW [1.2,1.5]sec
J: 2-2.5 MW [.7,1]sec
result: plasma
D: ran 3 faults
E: ran 5 faults
J: ran 4 faults

Jun 21 2006 11:42:09:240AM1060621005Steve Wukitch005 BT~5.1 T, Ip~1, nl04~0.8, LSN, no 3He, heating phase (dig phase=10)
D: 1-1.25 MW [1.2,1.5]sec
E: 1-1.25 MW [1.2,1.5]sec
J: 2-2.5 MW [.7,1]sec
result: plasma
D: ran 3 faults
E: ran 5 faults
J: ran 4 faults

Jun 21 2006 11:58:28:757AM1060621006Steve Wukitchno power
Jun 21 2006 12:26:33:043PM1060621007Steve Wukitch007 BT~5.1 T, Ip~1, nl04~0.8, LSN, no 3He, heating phase (dig phase=10)
D: 1-1.25 MW [1.2,1.5]sec
E: 1-1.25 MW [1.2,1.5]sec
J: 2-2.5 MW [.7,1]sec
result: plasma
D: ran
E: ran 1 fault
J: ran 1 fault

Jun 21 2006 12:27:41:387PM1060621008Steve Wukitch008 BT~5.1 T, Ip~1, nl04~0.8, LSN, 100 msec @0.2 s 3He, heating phase (dig phase=10)
D: 1-1.25 MW [1.2,1.5]sec
E: 1-1.25 MW [1.2,1.5]sec
J: 2-2.5 MW [.7,1]sec
result: plasma
D: ran
E: ran 4 faults
J: ran 3 faults

Jun 21 2006 12:49:15:083PM1060621009Steve Wukitch009 BT~5.1 T, Ip~1, nl04~0.8, LSN, 100 msec @0.2 s 3He, heating phase (dig phase=10)
D: 1-1.25 MW [1.2,1.5]sec
E: 1-1.25 MW [1.2,1.5]sec
J: 2-2.5 MW [.6,.9]sec
result: plasma
D: ran
E: ran 1 fault
J: ran screen overload - match is off during H-mode

Jun 21 2006 12:56:48:960PM1060621010Steve Wukitchdud - no OH1
Jun 21 2006 01:04:10:383PM1060621011Steve Wukitchdud - no OH1
Jun 22 2006 03:58:54:780PM1060621012Steve Wukitch012 BT~5.1 T, Ip~1, nl04~0.8, LSN, 100 msec @0.2 s 3He, heating phase (dig phase=10)
D: 1-1.25 MW [1.2,1.5]sec
E: 1-1.25 MW [1.2,1.5]sec
J: 2-2.5 MW [.7,1]sec
result: plasma
D: ran 2 faults
E: ran 5 faults
J: ran 3 faults
next: swap order
note: more D-alpha response with J than D+E
Jun 22 2006 03:59:12:093PM1060621013Steve Wukitch013 BT~5.1 T, Ip~1, nl04~0.8, LSN, 100 msec @0.2 s 3He, heating phase (dig phase=10)
D: 1-1.25 MW [.6,.9]sec
E: 1-1.25 MW [.6,.9]sec
J: 2-2.5 MW [1.2,1.5]sec
result: plasma early disruption
Jun 22 2006 03:59:43:203PM1060621014Steve Wukitch014 BT~5.1 T, Ip~1, nl04~0.8, LSN, no 3He, heating phase (dig phase=10)
D: 1-1.25 MW [1.2,1.5]sec
E: 1-1.25 MW [1.2,1.5]sec
J: 2-2.5 MW [.7,1]sec
result: plasma
D: ran 3 faults
E: ran 4 faults
J: ran 3 faults
next: with He
Jun 22 2006 03:59:56:670PM1060621015Steve Wukitch015 BT~5.1 T, Ip~1, nl04~0.8, LSN, 100 msec @0.2 s 3He, heating phase (dig phase=10)
D: 1-1.25 MW [1.2,1.5]sec
E: 1-1.25 MW [1.2,1.5]sec
J: 2-2.5 MW [.7,1]sec
result: plasma
D: ran
E: ran 4 faults
J: ran 5 faults
next: boronize
Jun 22 2006 04:00:08:267PM1060621016Steve Wukitch016 no plasma
Jun 22 2006 04:06:21:750PM1060621017Steve Wukitch017 fizzle
Jun 22 2006 04:06:30:420PM1060621018Steve Wukitch018 BT~5.1 T, Ip~1, nl04~0.8, LSN, 100 msec @0.2 s 3He, heating phase (dig phase=10)
J: 2-2.5 MW [.7,1]sec
result: plasma
J: ran 3 faults
Jun 22 2006 04:07:52:580PM1060621019Steve Wukitch019 BT~5.1 T, Ip~1, nl04~0.8, LSN, 100 msec @0.2 s 3He, heating phase (dig phase=10)
J: 2-2.5 MW [.7,1.2]sec
result: plasma
J: ran overload after 1 sec
Jun 22 2006 04:08:06:063PM1060621020Steve Wukitch020 BT~5.1 T, Ip~1, nl04~0.8, LSN, 100 msec @0.2 s 3He, heating phase (dig phase=10)
D: 1-1.25 MW [.7,1.2]sec
E: 1-1.25 MW [.7,1.2]sec
result: plasma
D: ran
E: ran 1 fault
next: boronize
Jun 22 2006 04:08:18:813PM1060621021Steve Wukitch021 BT~5.1 T, Ip~1, nl04~0.8, LSN, 100 msec @0.2 s 3He, heating phase (dig phase=10)
D: 1 MW [.7,1.2]sec
E: 1 MW [.7,1.2]sec
result: plasma, injection just after L->H transition
D: ran
E: ran
next: repeat
Jun 22 2006 04:08:34:530PM1060621022Steve Wukitch022 BT~5.1 T, Ip~1, nl04~0.8, LSN, 100 msec @0.2 s 3He, heating phase (dig phase=10)
D: 1 MW [.7,1.2]sec
E: 1 MW [.7,1.2]sec
result: plasma
D: ran 1 fault
E: ran
next: J discharge
Jun 22 2006 04:08:45:173PM1060621023Steve Wukitch023 BT~5.1 T, Ip~1, nl04~0.8, LSN, 100 msec @0.2 s 3He, heating phase (dig phase=10)
J: 2 MW [.7,1]sec
result: plasma
J: ran 1 fault
Jun 22 2006 04:09:10:813PM1060621024Steve Wukitch024 BT~5.1 T, Ip~1, nl04~0.8, LSN, 100 msec @0.2 s 3He, heating phase (dig phase=10)
J: 2 MW [.7,1]sec
result: plasma
J: ran 1 fault
next: -90 (dig phase 280)
Jun 22 2006 04:09:21:140PM1060621025Steve Wukitch025 BT~5.1 T, Ip~1, nl04~0.8, LSN, 100 msec @0.2 s 3He, heating phase (dig phase=10)
J: 2 MW [.7,1]sec
result: plasma
J: ran 1 fault

Physics Operator Comments
Jun 21 2006 08:28:55:040AMBill RowanLoaded the requested shot: 1060613039

Note that A port shutter is open and cannot be closed. Message from Andy and Ron

Jun 21 2006 08:34:55:857AMBill Rowan


Delay in start due to Alternator. Could be 45 minutes or 3 hours. Stay tuned.




Jun 21 2006 09:13:48:740AMBill Rowan


Delay update: 10:15
Jun 21 2006 09:16:18:270AMBill Rowan
Reduced the 3He puff from 200 ms to 100 ms. Start time is 0.2 s.

Jun 21 2006 10:17:48:273AM1060621001Bill Rowan001. Disruption at 0.5 s
Jun 21 2006 10:27:09:820AM1060621001Bill RowanNext shot. No PCS changes

Jun 21 2006 10:37:17:990AM1060621002Bill Rowan002. Dud.
Sparker current seems low before t=0.

Jun 21 2006 10:52:23:577AM1060621002Bill RowanJim reset the sparker to start at -3.9s for 3.95 second gate

Next shot. No PCS changes
Jun 21 2006 11:03:45:810AM1060621003Bill RowanReduced the rate of density rise. Now reset it for 1e20 at 0.6 s

Jun 21 2006 11:15:03:907AM1060621004Bill RowanNext shot.
Increased the rate at zxl is moved outboard.

Jun 21 2006 11:17:29:753AM1060621004Bill Rowan3He puff turned off

Jun 21 2006 11:59:05:960AM1060621004Bill Rowan004. Plasma. disrupted at 0.3 s
Jun 21 2006 11:46:18:100AM1060621005Bill Rowan005. Plasma. Full length

Next shot. No PCS changes.
Cell access before this shot.

Jun 21 2006 11:59:56:100AM1060621006Bill Rowan006. No power shot. EF3 breaker.

Next shot. No PCS changes.

Jun 21 2006 12:11:25:667PM1060621007Bill Rowan007. Plasma. Full length shot.

Next shot.
Put the 3He puff back in. 100 ms starting at 0.2 s. On at 0.2 s. Off at 0.3 s

Jun 21 2006 12:39:24:417PM1060621008Bill Rowan008. Plasma. Full length shot.


Next shot. No PCS changes.
Jun 21 2006 12:51:01:193PM1060621009Bill Rowan009. Plasma. Full length.

Next shot. No PCS changes

Jun 21 2006 01:05:35:790PM1060621010Bill Rowan010. Dud. No current from OH1 supply

Next shot. No PCS changes.

Jun 21 2006 01:05:08:493PM1060621011Bill Rowan011. Dud. No current from OH1 supply

Power room entry to reset supply

Next shot. No PCS changes

Jun 21 2006 01:23:27:627PM1060621012Bill Rowan012. Plasma. Disruption just after rampdown.

Next shot. No PCS changes.
Jun 21 2006 01:39:09:333PM1060621013Bill Rowan013. Plasma. Disruption at 0.4 s

Jun 21 2006 01:42:49:600PM1060621013Bill Rowan
Next shot. 3He puff off.

Jun 21 2006 01:47:20:427PM1060621014Bill Rowan014. Plasma. Full length.

Next shot 3 He puff on.

Jun 21 2006 02:01:22:530PM1060621015Bill Rowan015. Plasma. Full length.
BSB before the next shot.

Engineering Operator Comments
ShotTimeTypeStatusComment
110:14:19:037AMPlasmaOk
210:28:12:553AMPlasmaOk
310:53:11:140AMPlasmaOk
411:05:38:827AMPlasmaOk
511:19:05:270AMPlasmaOk
611:53:26:290AMPlasmaBadEF3 Aux Power Fault
712:07:31:820PMPlasmaOk
812:22:53:497PMPlasmaOk
912:35:31:417PMPlasmaOk
1012:48:06:287PMPlasmaBadNo OH! Current
1101:02:32:023PMTestBad
1201:19:05:890PMPlasmaOk
1301:31:35:787PMPlasmaOk
1401:44:24:503PMPlasmaOk
1501:59:22:920PMPlasmaOk
1602:03:52:000PMPlasmaOk
1702:56:41:000PMPlasmaOk
1803:11:16:000PMPlasmaOk
1903:24:46:000PMPlasmaOk
2003:37:26:000PMPlasmaOk
2104:11:15:703PMPlasmaOk
2204:25:03:860PMPlasmaOk
2304:37:32:920PMPlasmaOk
2404:50:10:140PMPlasmaOk
2505:04:29:647PMPlasmaOk