2022/02/07 (Monday)
- Lab in-personnel: Matt, Shubham, Himangshu
| Status | Run 75 in progress |
|---|---|
| Setup | Tower Faces 5/3/2 → Cables 2/1/3 → nothing/diverter_board+extra_board/nothing → HVboard CONN1/2/3 → HV1/2 → DCRC55(1)/50(3) Lead shield in place. Am Source y = 30.03 mm |
| 1045 | Goldman/Tower/MC(H35)/Coldplate = 41.2/71.5/32.5/181 mK, Still = 1.39 K / 0.110 mbar / 0 mW, G1/G2= 269/241 mbar, 1K Pot = 1.60 K / 11±1 mbar, MB = 34.3% |
| 1255 | Fill LN2 cold trap bath. |
| 1430 | Check Side1-HV/Side2-Readout HV board wiring. All good. Side1 Charge Channels have resistors removed so they are open. |
| 1605 | Begin LHe transfer @ MB = 27.0% |
| 1639 | End LHe transfer @ MB = 89.5% |
Some observations about the Side2-readout HV board:
- Cables will plug in in the same order as with the Side1-readout HV board
- The detector's LEDs are connected to Cable 2, but unfortunately this connects to CONN1 which (on the Side2-readout HV board) leaves LEDs open. (This could be modified in the next tower build. Or, perhaps temporarily, we could use jumpers on the board to connect these to one of the output connectors.