| Status | Run 74 in progress. Warmed up after 3rd appearance of IVC leak at 4K. Cryostat Vacuum Jacket pumped out. Beginning reassembly of IVC. |
| | Upper IVC section installed, connections at top of fridge finished, upper stripline heatsink installed. |
| 1540 | Polished the 100 mK can with Scotch Brite, particularly the top surface (Zach did the lateral surfaces earlier), also polish the bottom of the upper 100mK can that is attached to the cold plate. Then attach the 100mK can (moving the 600mK rod out of the way, and letting the tower thermometer wire dangle in the middle). Attach the six steel bolts with washers and torque them. Relevant photos from the disassembly here: May 11 |
| 1610 | Polish top and bottom of MC spool, then attach it to MC base with the seven brass screw and the center steel nut. Note - these were hand-tightened, it doesn't seem like the torque driver can fit up there. Like last time we are letting the tower thermometer wire dangle (should doublecheck to insure that it doesn't touch the 100mK can anywhere). |