Newsgroups: sci.physics.plasma
From WOLFE@CMOD2.PFC.MIT.EDU Tue Sep 5 16:48:09 1995
From: WOLFE@CMOD2.PFC.MIT.EDU
Organization: MIT
Subject: Alcator C-MOD Weekly Highlights

Alcator C-MOD Weekly Highlights
Sept. 5, 1995

The scheduled maintenance and upgrade period continued on Alcator C-MOD last
week. Good progress was made toward restarting operation in the fall.

Seven out of ten of the outer divertor modules have been removed from the
machine for refurbishment; of these, two are complete and ready to be
re-installed. The inner divertor rib blocks have been aligned and
locations documented. All gusset protection modules have been installed. Ten
out of twenty of the lower inner divertor modules are installed.

The TCI CO2 laser is back in operation. The mode quality and power levels look
good. Construction has begun on the new tangential interferometer. The power
supply and Bragg cell driver electronics are being assembled. The
retro-reflector passed its outgassing test.

Work on the new EF4 supply is progressing well. The control cabinet mechanical
construction is complete. The relay logic design and documentation is done, as
are all PLC IO allocations. All PLC and CAMAC hardware is in-house. UPS and
Experimental power connections to the converter and control cabinets are
complete. PC board chassis interconnect wiring and documentation is complete.
Construction and testing of all PC boards is complete. Bracing of the EF4 bus
to allow higher currents is complete. New fiber optic runs have been installed
in the power room, cell, and interface room for the new EF4 supply and to
extend some runs on the YAG system.

Preparations for installation of the new EF1 transformer have been completed.
The AC bus has been modified to accept two secondaries instead of one. The
cabinet frame has been modified to allow access to the transformer.

Dirck Dimock of PSI is visiting today to check the optics on the edge Thomson
Scattering. A leak at the window of the optics head has been repaired.

A review of the Alcator C-MOD proposed program for the next five years was
held at MIT last week. Participants included Dr. Don Priester of D.o.E., and
Drs. Hosea (PPPL), Callen (U. Wisc.), Hooper (LLNL), and Stambaugh (GA).

Jim Rosati and Mike Fridberg visited PPPL last Friday to discuss water cooling
and control issues involving the PPPL tunable transmitters.