Alcator C-Mod Weekly Highlights
		       October 26, 1998


Engineering:

Following installation and borescope inspections of all the lower TF spring
plates, the machine was moved from the assembly stand to the lower dome last
Thursday.  Earlier in the week, the OH1 and OH2U coaxes were installed and
torque and resistance checks were made over a several day period.
On Friday, the upper wedge plate was installed and aligned.  Over the
weekend the wedge blocks that support the outer most spring plates on each
leg were installed. Last week, all upper TF arms were cleaned and made ready
for installation.  We continue feltmetal soldering of the TF legs.

The central column cooling manifold was disassembled last week in order to
add four new thermocouples.  This change will provide better information
about central column cooling during the next run campaign.  New thermocouples
are also being added near the upper arm finger joints at four locations.  These
devices will provide a more rapid indication of temperature extremes
around this very critical location.  The previously installed thermocouples,
approximately 30 cm away from this region, will still be monitored and used
for feedback control of the TF arm and core temperatures.  We also began
checkout of the cryogenic system in preparation for the run.

We continued development of the DNB for C-Mod.  The F-port racetrack flange
was lapped and is being cleaned in preparation for leak testing.
Progress continued on the high voltage power supply with the installation
of the regulator board and the firing and current trip boards.

The magnet power supplies continue to come back online.  Fuses, gates,
crowbars, overvoltage protection circuits, IOCs, and feedback circuits were
checked and made operational on the OH1, OH2U, and OH2L power supplies.
In addition, all supply converters were hi-potted to insure proper SCR
operation.

The RF group continued work on the new CAMAC systems for the new
transmitters.

We continue to push along invessel work.  The divertor bypass flap
component fabrication is complete and assembly is proceeding.  We have
begun to fitup flapper modules invessel.  Design and fabrication of new
mirror mounts, shutters, mounting fixtures, and other diagnostic related
components continue. 


Visits and Travel:

Gary Taylor visited from PPPL.  He modified the fast  digitizers for GPC2
and discussed analysis of data obtained in RF modulation experiments.
Norton Bretz and Dave Cylinder, also from PPPL, visited last week to
test fit the MSE system invessel.  The fit up went very well.

Paul Bonoli, Bob Granetz, Martin Greenwald, Ian Hutchinson, Bruce Lipschultz,
Earl Marmar, Miklos Porkolab, John Rice, and Steve Wukitch attended the
17'th IAEA Fusion Energy Conference in Yokohama Japan. They  presented
4 oral and 3 poster papers at the conference.