Alcator C-Mod Weekly Highlights
                       January 4, 2010


FY2010 weeks of research operations
  Base Target: tbd
  Base Completed: 1.7 weeks
  ARRA Target: 5 weeks
  ARRA Completed: 5.0 weeks
  Plasma Shots: 807


Operations
----------

Alcator C-Mod is currently in a planned maintenance period dedicated
primarily to the installation of the new lower hybrid launcher.  Routine
maintenance of many C-Mod systems is also planned for this period.


Lower Hybrid System
--------------------

Welding of the plasma facing surface of the lower hybrid grill was
successfully completed last week.  This operation was the last major
fabrication task required to complete the launcher.  The launcher can
now be moved into the C-Mod cell where extensive calibration work will
be performed.

Work continued on the launcher control and protection software,
installation of waveguide runs from the klystrons, phase and amplitude
calibrations of cabling and coupler components, and the hardware needed
for the new rf probes.


ICRF Systems
------------

Routine maintenance continues on the ICRF systems with work last week
concentrating on the transmitter crowbar cabinets.


Alternator
----------

MIT has agreed to provide funding for a new alternator oil cooling
system that will allow C-Mod to operate during the late summer without
concern over the Charles River water temperature.

The alternator drive motor transformer over-temperature indication that
stopped C-Mod operation on 12/19/09 continues to be investigated.  The
transformer has been successfully tested and qualified for operation.
The thermal switches that indicated the fault are being replaced, and
additional instrumentation is being added to monitor the temperatures.

Routine maintenance continued on components associated with the helium
gas cooling and vacuum systems.

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