Alcator C-Mod Run 1040109 Information

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Miniproposals
Miniproposal:375
Date Filed:11/25/2003
Title:Rotation and H-mode Threshold vs. SSEP
First Author:John Rice
Session Leader:John Rice (shots 1-1)

Operators
Session leader(s):John Rice
Physics operator(s):Dmitri Mossessian
Engineering operator(s):Gary Dekow,Bill Byford

Engineering Operator Run Comment
Rotation/Threshold vs SSEP (MP375); Sl: Rice; PO:Mossessian; EO:Dekow/By

Session Leader Plans

Physics Operators Plans

Session Leader Summaries

Physics Operator Summaries
Entered: Jul 7 2004 04:36:48:567PM
Author: Dmitri Mossessian
Engineering setup for Friday 09 Jan 2004

Rotation/Threshold vs SSEP (MP375)

Session leader: Rice
Physics operator: Mossessian

Overnight ECDC in D2

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

Power systems the same as on 1040107004

A-coils should be hooked up as on 1040107004 (+Dtop -Dbot -Jtop +Jbot), and the power supply should be enabled.

Gas setup:
fill B-Top with 6 psi D2 Hybrid enabled (PG4)
fill B-side lower with 1 psi Ar Hybrid enabled (PG1)
leave B-side upper as is Hybrid DISABLED (PG2)
fill C-side with 30 psi D2 Hybrid enabled (PG3)
fill Ninja plenum with 150 Torr NEON


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

Run plan:

The purpose is to determine L-mode rotation velocity and H-mode power threshold as a function of SSEP in double
null configuration.

We'll start with 1031124007 - double null discharge with SSEP programed to -0.003 mm giving close to 0 in reality.
The shot has segment 4 programed for SSEP control, segment 2 for LN and segment 3 for UN. We will use segment 4
and vary SSEP shot to shot to cover the range from -1 cm to +1 cm.

_______________________________

Loaded 1031124007


A problem with some RF transormer caused fire alarm to go off and the run was cancelled.


Session Leader Comments

Physics Operator Comments
Jan 9 2004 09:04:26:617AM1040109001Dmitri MossessianEngineering setup for Friday 09 Jan 2004

Rotation/Threshold vs SSEP (MP375)

Session leader: Rice
Physics operator: Mossessian

Overnight ECDC in D2

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

Power systems the same as on 1040107004

A-coils should be hooked up as on 1040107004 (+Dtop -Dbot -Jtop +Jbot), and the power supply should be enabled.

Gas setup:
fill B-Top with 6 psi D2 Hybrid enabled (PG4)
fill B-side lower with 1 psi Ar Hybrid enabled (PG1)
leave B-side upper as is Hybrid DISABLED (PG2)
fill C-side with 30 psi D2 Hybrid enabled (PG3)
fill Ninja plenum with 150 Torr NEON


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

Run plan:

The purpose is to determine L-mode rotation velocity and H-mode power threshold as a function of SSEP in double
null configuration.

We'll start with 1031124007 - double null discharge with SSEP programed to -0.003 mm giving close to 0 in reality.
The shot has segment 4 programed for SSEP control, segment 2 for LN and segment 3 for UN. We will use segment 4
and vary SSEP shot to shot to cover the range from -1 cm to +1 cm.

_______________________________

Loaded 1031124007
Jan 9 2004 10:05:51:063AM1040109001Dmitri MossessianA problem with some RF transormer caused fire alarm to go off and the run was cancelled.

Engineering Operator Comments
ShotTimeTypeStatusComment
107:38:20:280AMTestOk