| | Setup: DIB1/3/4 → 3.2 MHz filters 3/1/2 → cable 3/1/2 →gender changer 3/1/2 → HVConn 1/3/2 → HV 1/2 → DCRC55/DCRC33 |
| 0922 | Fill LN2 cold trap full. |
| 0926 | Tower/MC/Coldplate = 32.7/30.3/194 mK, Still = 1.3 K / 0.110 mbar, G1/G2 = 237/226 mbar, 1K Pot = 1.697 K / 32 mbar. Main Bath = 67.1%. Boil off rate: close to slow mode (predicted level 69.0%) |
| 1005 | Open IVC valves to turbo pump. Pressure at turbo pump increases from 0.74 nbar to 1.6 nbar. |
| 1038 | HV = 49.96 V, V_leak = 2.4 mV, V_crystal = 48.90 V |
| 1430 | Finish IbIs on DCRC1pA/DIB1pA/Side1pE |
| 1455 | Measure event rate with south wall lead removed by counting pulses in DCRC2pB, still at 50V bias. Count 42 pulses in 1 second = 42 Hz. |
| 1600 | Replace 2/3 of the lead shield on the south wall, leaving gap for the NaI detectors. |
| 1605 | Finish IbIs on DCRC1pB/DIB1pB/Side1pB |
| 1610 | Measure event rate with 2/3 of south wall lead present by counting pulses in DCRC1pB, still at 50V bias. Count 21 pulses in 1 second = 21 Hz. |
| 1615 | Place weak Y source near fridge |
| 1628 | Set HV = 0 V |
| 1632 | DCRC1pC has some HF noise on top of pulses, Zap SQUIDs to clear any trapped flux. |
| 1712 | Flash detector for 30s. |
| 1745 | Fill LN2 cold trap full. |