Alcator C-Mod Run 971103 Information

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Engineering Operator Run Comment
mp 170a

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Physics Operator Summaries
Entered: Jul 7 2004 04:36:58:003PM
Author: Unknown
Physics operator summary for run 971103

MP 170A, Re-start C-Mod and begin 80 MHz RF conditioning

SL: Hutch
PO: Granetz
EO: Silva

Summary: The run was cancelled around 11:00 due to an overtemp indication on
an alternator bearing. After the alternator came to a stop, it was
determined that the instrumentation was working properly, so one side
of the bearing did indeed reach 180 F.

Scorecard: 0 plasmas
0 fizzles
0 duds
0 tests
----------
0 total

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Run Plan for Monday, 971103

MP 170A -- Restart plasma operation, and begin conditioning 80 MHz ICRF

Engineering setup for Monday, 03 Nov 1997:

Overnight ECDC in deuterium, if anyone is around on Sunday.

Engineering setup as on 971030015, with TF under hybrid control
Plasma current to be set for 0.8 MA
Segment 1 startup will be copied from 971030015
Density to be set for nl_04=1.0e20 m-2, if TCI is available, else use
the pre-programmed gas valve trace from the setup shot.

Gas setup - fill K-side with 20 PSI of D2, hybrid enable
fill B-top with 6 PSI of D2, hybrid enable
fill B-side-lower with 4 PSI of Ar, hybrid enable

The following gate valves should be enabled, assuming no vacuum problems:

None (until we verify the status of each system)
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Detailed shot log:

Note: the machine was boronized at the end of last week.
Note: no ECDC was done prior to this run.
Hybrid coldstart done; no errors found
($set default cmod$models:[hybrid.tcl]
$@hybinit_dispatch
$@show_bitbus_log
Use editor to search for no "error" and no "not respond")
Reload plasma shot from last Thursday (971030015), which
has Ip=0.8 MA and Bt=5.3 T.
Turn nl_04 feedback back on. Gain is set at 4, starting at 0.082 s.

Start of run will be delayed until 10:30-11:00 to allow alternator
to warm up.

Run cancelled due to an overtemp indication on an alternator bearing.

Session Leader Comments

Physics Operator Comments
Nov 3 1997 08:29:32:200AMRobert GranetzRun Plan for Monday, 971103

MP 170A -- Restart plasma operation, and begin conditioning 80 MHz ICRF

Engineering setup for Monday, 03 Nov 1997:

Overnight ECDC in deuterium, if anyone is around on Sunday.

Engineering setup as on 971030015, with TF under hybrid control
Plasma current to be set for 0.8 MA
Segment 1 startup will be copied from 971030015
Density to be set for nl_04=1.0e20 m-2, if TCI is available, else use
the pre-programmed gas valve trace from the setup shot.

Gas setup - fill K-side with 20 PSI of D2, hybrid enable
fill B-top with 6 PSI of D2, hybrid enable
fill B-side-lower with 4 PSI of Ar, hybrid enable

The following gate valves should be enabled, assuming no vacuum problems:

None (until we verify the status of each system)
Nov 3 1997 05:34:39:320PMRobert Granetz
Run cancelled due to an overtemp indication on an alternator bearing.
Nov 3 1997 05:43:22:650PMRobert Granetz Note: the machine was boronized at the end of last week.
Note: no ECDC was done prior to this run.
Hybrid coldstart done; no errors found
($set default cmod$models:[hybrid.tcl]
$@hybinit_dispatch
$@show_bitbus_log
Use editor to search for no "error" and no "not respond")
Reload plasma shot from last Thursday (971030015), which
has Ip=0.8 MA and Bt=5.3 T.
Turn nl_04 feedback back on. Gain is set at 4, starting at 0.082 s.

Start of run will be delayed until 10:30-11:00 to allow alternator
to warm up.

Engineering Operator Comments
ShotTimeTypeStatusComment