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2015/07/07 (Tuesday)

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overnight status: Cf source near detector, baking detector. DIB1/2/3 → no filter/100 MHz C filter/3.2 MHz pi filter → DCRC55/33/50
0835 Tower = 300 mK, Still = 0 mW / 0.15 mbar, G1/G2 = 245/220 mbar, 1K Pot = 1.70 K / 13 mbar, Main bath = 36.1%
0840 Turn off flashing
0848 Fill LN2 cold trap Dewar partially (need to refill storage Dewar)
1000 Remove Cf source
1019 re-optimize phonon thresholds:
Current phonon threshold settings
pA pB pC pD
DIB1 30 25 35 20
DIB2 30 25 30 25
DIB3 25 15 20 25
1021 Relock DIB1pB again. Baseline shift in DIB1pD, change driver offset from -0.024 to -0.094.
1024 Set -4/+4 V. Start bkg data.
1042 Stop data, set 0/0 V, flash 30 seconds.
1102 Set to -3.5/+3.5 V. Start bkg data. (relock DIB1pB again)
1116 Fill LN2 cold trap Dewar
1120 Stop data, set 0/0 V, flash 30 seconds.
1145 Set to -3/+3 V. Start bkg data.
1202 Stop data, set 0/0 V, flash 30 seconds.
1228 Set to -2.5/+2.5 V. Start bkg data. (Had to relock DIB2pB and pC)
1248 Stop data, set 0/0 V, flash 30 seconds.
1319 Set to -2/+2 V. Start bkg data. (Had to relock DIB1pB)
1339 Stop data, set 0/0 V, flash 30 seconds.
1407 Set to -1.5/+1.5 V. Start bkg data. (Had to relock DIB1pB and DIB2pC)
1426 Stop data, set 0/0 V, flash 30 seconds.
1449 Set to -1/+1 V. Start bkg data. Note DIB1pB railed some time during run.
1507 Stop data, set 0/0 V, flash 30 seconds.
1527 Set to -0.5/+0.5 V. Start bkg data.
1544 Stop data, set 0/0 V, flash 30 seconds.
1606 Leave at 0/0 V. Start bkg data. Note DIB1pB railed some time during run.
1651 Commence He transfer. He level at 23.3%.
1719 Finish He transfer. He level at 77.3% (11 L left in dewar 3107).
1730 Fill LN2 cold trap Dewar
1740 Start baking detector.
1815 Take out Cf-252 source and place in shielding near detector for overnight activation.

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