Alcator C-MOD Weekly Highlights 
			April 7, 1994


Preparation for Phase II Operation is continuing. 

Leak checking has continued this week. The C-port horizontal flange was found
to have a significant leak at the Helicoflex seal, which required several
attempts to fix; this repair has now been successful. Several smaller leaks
were also successfully identified and eliminated. 

The cryo system is now ready for operation. The LN2 pump has been run
successfully. The cryo system is required for cooling of the coils during
high-temperature bakeout.

The heater and temperature monitoring system has been checked out and is now
operational. All required systems are now ready for bakeout. Structure
thermocouples that are not needed for bake but will be required for cooldown
are now being verified for proper operation. 

The guard vacuum system that provides pumping on the secondary seals of
flanges located inside the cryostat is now operating. 

The internal thermocouples on the new RF limiters and antennas have been
checked out and are operational. The Unit #2 FMIT transmitter has been
successfully tested to 600kW after only one day of operation. 

A new version of the PCS software, the interface to the C-MOD Plasma Control
System, has been completed and is being demonstrated to the Physics Operators
today. The new version supports several new features incorporated into the
control hardware during the maintenance interval, including time-dependant
reference assignments on the Wavegen, independent resets on the integrators in
the PID stage, and pre-programmed abort sequences. 

Checkout of the power systems and bus instrumentation is beginning. 

The Charged Fusion Product Detector, which had been delayed and was not
available for installation before the initial pump-down last week, was
installed during the last vent (required to repair the C-Port leak). 

Miklos Porkolab, Yuichi Takase, and Paul Bonoli are participating in the 7th
Boulder RF Workshop (Topic: RF Current Drive and Advanced Tokamaks). Dr. J.
Kinsey is visiting from U. of Illinois at Champaign-Urbana this week; he is
collecting C-MOD data from the 1993 campaign for use in transport modeling
using the Baldur code. Mark May from Johns Hopkins and Ben Welch from U.
Maryland have also been on-site preparing their diagnostics for the upcoming
operating campaign. Three abstracts on Alcator C-MOD results have been
prepared for submission to the IAEA Conference on Plasma Physics and
Controlled Fusion, to be held next September.