Alcator C-MOD Weekly Highlights
					Jan. 27, 1994

The scheduled shutdown and maintenance period leading up to Phase II operation
is continuing. Steady progress is being made in readying the machine for the
upcoming campaign.

The B4C coating of the ICRF antenna protection tiles and faraday screen has
been completed. These components are now scheduled to be shipped back to MIT
(from France) this week. Locally, the FMIT transmitter #2 coax switch, which
switches the output between a dummy load and the antenna, has been installed. 

System communication for the control room computer cluster has been upgraded.
All of the VAX4000/90 and AXP3000/400 computers are now connected via FDDI (100
Mbit/sec) optical fiber. This is expected to considerably improve system
response during operation; during the last campaign we had observed that the
ETHERNET link was running close to rated capacity for several minutes after
each shot as the data were collected, displayed and analyzed.

The vacuum roughing pump is now in position. Installation of the inner seal
blankets and boots is now complete.  

Work on the tiles continues.  All of the new hold-down pins have now been
machined, ending what had been a major ongoing effort. Tile module re-assembly 
is progressing.  All parts for the divertor current shunts are now in house. 
Some minor machining operations to the shunts are now being performed.  

All work in the TF crowbar cabinets is now complete. Machining of parts for
the TF switch has been completed and the components are now being installed. 
The completion of this task will mark the end of all bus modifications planned
for this break. One final inspection/re-torque of the OH/EF coaxes has been
done and all the connections have been re-taped for electrical insulation.  
	
All components for the LN2 feedline are now fabricated.  Installation will be
complete as soon as the feedlines to the cryostat and valve manifold are
installed.  The new feed system sensors and control valves can then be tied
into the cryo PLC.  A flow test was successfully done on the new phase
separators which will terminate the fill line in the cryostat.  

Finally, the lower cryostat has been raised into position.

Earl Marmar participated in the DIII-D Advisory committee, which met at GA in 
San Diego. Amanda Hubbard and Paul Stek participated in a reflectometry workshop 
held at PPPL. Miklos Porkolab presented Alcator C-MOD plans to the TPX/ITER 
meeting in San Diego. Porkolab and Marmar also met with Ken Young to continue 
discussions on the PPPL/Alcator collaboration. G. Fussmann and R. Radtke are 
visiting from IPP-Berlin; they will be holding discussions with Alcator 
personnel on edge physics, spectroscopy, and impurity transport.