Alcator C-MOD  
			Weekly Highlight Report 
			July 22, 1993

This week Alcator C-MOD has resumed operation after a scheduled two-week
maintenance period. Cooldown began on Friday, July 16, and took five days,
as planned. Discharge cleaning (ECDC in Hydrogen) was carried out on Monday
July 19. Power testing was completed on Tuesday and plasma operation began
on Wednesday, July 21, on schedule.

This week's operation is planned to concentrate on operational
enhancements, with some physics activities scheduled as piggy-back tasks.
We are now operating with the EF3 coils in series, and the OH1 interrupter
circuit in the low voltage (2kV max), high current configuration; this
arrangement corresponds to the design configuration for normal operation.
Today's run is dedicated to increasing the pre-charge currents to provide
more volt seconds, in order to allow higher plasma currents and longer
discharge times.

The pellet injector, which was installed during the maintenance period, is
now operational, and has been firing pellets into its target during plasma
operation to verify control sequences, timing, and data acquisition as part
of the C-MOD cycle.  

A two-day working meeting on the C-MOD Helium Self-pumping Project is being
held this week at MIT. In addition to members of the C-MOD Edge Physics
Group, participants include collaborators from  Argonne National Laboratory
and Sandia National Laboratory, Albuquerque.