Alcator C-MOD Weekly Highlights
					Nov. 10, 1993

Alcator C-MOD has successfully completed Phase I operation and is now shut
down for a scheduled extended maintenance period. Major activities during
this shut down will include installation of the flywheel and installation of
two dipole ICRF antennas. This will enable us to operate at toroidal fields up
to 9 Tesla (or for 7 sec pulses at 5 Tesla) and increase the ICRF power to
4MW. 

Prior to warming the machine, a series of tests were performed to investigate
the cause of and possible solutions to the problem of minor vacuum leaks
associated with cooling of the structure and coils. These tests included
helium leak checking and borescope inspections of flanges inside the cryostat
during extreme cooling conditions. Three horizontal port assemblies which were
determined to have failed Helicoflex seals will be removed and the seals
replaced. An insulating sleeve has been designed to minimize excess cooling of
the flanges and the development of large thermal gradients near the seals.  

We have now begun warming up the machine. This process is expected to take
approximately one week. Diagnostic and auxiliary equipment, including the gas
feed system,  have been removed from the top and upper tiers of the igloo, in
preparation for partial disassembly.

The flywheel is now onsite, and preparation for installation has begun.

The majority of the physics staff attended the APS meeting in St. Louis last
week. A total of 27 posters and one invited talk reporting on Alcator C-MOD
results were presented.