Travis, Melina, Jordan

Per the updated HAM6 VE drawing (D0901823), we moved the HAM6 turbopump and pump out spool from the top D7 flange to the -Y door BF3 port. The 12"CF ->10" CF adapter, gate valve, pump out spool and turbo pump were removed and replaced with a single 12"CF blank on the D7 flange. We also replaced the turbo with a 500 l/s Leybold maglev turbo compatible with the SS500 pump carts.

The turbo assembly (with GV closed) was pumped down and helium leak checked. Each joint sprayed with a 5s dwell of He, no signal observed above the leak detector background of 3.6E-10 Torr-l/s. Remaining chamberside flanges will be He leak checked during corner pumpdown.