Engineering Meeting

06 February 2002

Minutes

Geoff Gettelfinger and Mike Kalish are coming on board to design the cryogenic and VV/FW heating and cooling systems respectively.  Discussions centered around the technical requirements for those systems.  Brad Nelson indicated that LN2 cooling of the modular coils (not gaseous helium) is the design approach adopted for the CDR.  This should result in significant cost savings by avoiding the high cost of a compressor for circulating the cold helium gas.  Nelson also indicated that cold mass would be cooled down from room temperature by convection with the cold, dry nitrogen gas inside the cryostat.  David Williamson and Paul Goranson were identified as the points of contact at ORNL for information on coil cooling requirements and heat leakage through the cryostat.  Fred Dahlgren (PPPL) is supporting ORNL in the design of the vapor-cooled leads for the cryogenic coils.

A helium gas system is envisioned for controlling the temperature of the vacuum vessel and first wall assembly.  At the time of the PVR, the plan was to use a system similar to the bakeout system developed for NSTX.  Paul Goranson is the point of contact at ORNL for VV/FW heating and cooling system requirmements.

Wayne Reiersen and Bob Simmons agreed to provide the technical, cost, and schedule information that was prepared prior to the PVR.

David Williamson provided an update on the modular coil design, specifically on the development of features to effect coil cooling.  Mike Cole provided a status report on the development of the stellrator core configuration.

Presentations/Technical Reports

Please forward any comments or corrections to reiersen@pppl.gov

(last edited on 02/07/2002 11:05 AM )