Alcator C-Mod Weekly Highlights
			November 30, 1998



Engineering:

Assembly of Alcator C-Mod continued last week with the completion of the
curved bus installation.  We are now ready to do the final room temperature
hi-pot and ring of the magnets with the bus installed.  No other hi-pot or
ringing tests will be required of the magnet system until after cooldown.
We also continued to install and checkout LN2 cooling system components,
heater and thermocouple electronics, horizontal extensions, and flanges
and Gortex boots that form the interface between the port extensions
and the cryostat.  The TF coax has been checked and re-torqued several times
and is ready for operation.

Invessel work last week included the installation of the D and E port
antennas.  Test fitups of the divertor bypass flaps indicated that a better
gas seal between the flapper cover plate and the vessel was required.  This
improvement was easily implemented and the flappers are ready to install.
The studs for the vessel wall rangefinder were installed over the weekend.
The retro-reflectors have also been installed in the studs and initial tests
made with an alignment laser.

General vacuum work last week included the installation of all horizontal port
extensions and eight out of ten horizontal flanges.  Remaining flanges to
install include C and G, which are currently our entry ports.  With the
installation and checkout of the cooling lines and panels at the top and
bottom of the machine, we will be able to begin installation of the vertical
port crosses.  This process should also begin early this week.  The vacuum
pumping stack has been installed, though roughing lines and foreline pumps,
together with the control electronics still need to be assembled.

The TF power supply has been checked out and is ready for operation.
A careful inspection of the TF bus inside the bus tunnel is underway.

Development of the DNB and its diagnostics for C-Mod continued.  F-port
flange was installed on C-Mod, and the inner vacuum seal successfully tested.
Preparation of the fiber optic cable for high vacuum continued.  Chassis
wiring for the local control of the accelerator supply was completed along
with the wiring harness for the supply.  For the Mod/Reg control, the PC
board layout for the crowbar control board was completed.  Also, the
existing grid drive board was characterized, and some improvements made in
the design.


Travel and Visits:

Byron Peterson of LHD (NIFS) was here 11/23 - 11/24 to talk about
impurity transport and bolometry with John Rice, Rejean Boivin, and
John Goetz.

Les Gereg, Joe Frangipani, Dave Cylinder, and Norton Bretz from PPPL are
here this week to work on the new antenna and the MSE diagnostic.
David Mikkelsen, also from PPPL is visiting this week working with Martin
Greenwald on transport modeling.  He gave a talk on his work at our
Physics meeting.