Alcator C-Mod Run 960903 Information

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Miniproposals
Miniproposal:161
Date Filed: 7/18/1996
Title:JET/C-Mod Dimensionless Identity Experiments
First Author:Ian Hutchinson
Session Leader:Ian Hutchinson (shots 1-12)

Operators
Session leader(s):Ian Hutchinson
Physics operator(s):Joseph Snipes
Engineering operator(s):Frank Silva

Engineering Operator Run Comment
gauge cal/blip/snipe/silva

Session Leader Plans

Physics Operators Plans

Session Leader Summaries

Physics Operator Summaries

Session Leader Comments

Physics Operator Comments
Sep 4 1996 09:18:01:480AMEarl MarmarMP 161 JET Similarity
SL: Hutchinson
PO: Marmar
EO: Silva/


Engineering setup
-------------------
Boronize overnight followed by ECDC (~1 hour in Helium followed by ~1 hour in
Deuterium)


Power systems setup as for 960830030
Gas setup = standard
A-side 20psi D2
B-top 5psi D2
B-side Lower 4psi Ar
Enable all for first shot (hybrid)

Run plan
--------
Start from PCS as on 960830043, a 1 MA 5.3 T shot. After operation is
established, work on plasma shape to match the JET equilibrium of interest and
raise the current to 1.2 MA. Assuming RF power is sufficient and desired shape
is achieved, proceed with the miniproposal for non-dimensional comparison with
JET.

Hybrid coldstart. File not found errors. Tom Fredian says it is due to running
the coldstart procedure at the same time as Josh's new CAMAC test procedure was
being run. After Tom fiddled, I reran the hybrid coldstart; all matrices
responded.

Delay in run start due to 13.8 breaker trip, causing alternator to slow.

Sep 4 1996 10:18:38:950AM960903002Earl Marmarload 960830043; B_R offset to 6 mT from 5.5; twiddle segment 1 PG3 voltage;
reduce nl_04 programming during RF;

plasma; disrupt on rmpdown at .5 MA

Sep 4 1996 10:28:05:810AM960903003Earl Marmarreduce rcur by 2 mm; reduce clearin by 4 mm; RXL out 1 cm; Zcur up 1 cm;
fizzle

Engineering Operator Comments
ShotTimeTypeStatusComment
101:45:25:590PMTestOkGas Calibration
202:05:30:400PMTestOkgas pulse test
302:14:53:550PMTestOkgauge cal
402:33:44:930PMTestOkgas gauge calibration
502:50:59:810PMTestOkpulse gas gfauge cal
603:04:52:400PMTestOk
703:18:16:330PMTestOkgauge cal
803:30:15:930PMTestOkgas gauge cal
903:41:20:070PMTestOkgas gauge cal.
1003:51:09:250PMTestOkgas gauge cal.
1104:04:54:340PMTestOk
1204:12:19:830PMTestOk