2021/10/15 (Friday)

Status	Run 75 prep.
	All mixture is in dump. Fridge isolated. 1K Pot isolated. LN2 Trap 2 still has contaminants in it. MB in pit, clean tent erected. Cryostat vacuum jacket (CVJ) pumped out. IVC open. Tower removed.
1300	Working on SQUET/stripline interposer board used in the last run. Most of the broken-off sockets are “extra” phonon return lines as usual, but for some reason QET A bias (Pin 15) also had a broken socket. We need all QETs this run, so I replaced that full pin (took a while). Also at some later point I replaced pin for QET B Return #1 (Pin47) because the pin side was broken off.
1615	Drilled hole in center of a detector housing to mount the Goldman thermometer (to screw into the brass base nut). Cut a brass screw down to size and tapered the hole in the brass nut to get it to fit.