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2021/07/12 (Monday)

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  • Lab in-personnel: Matt
Status Run 74 in progress. First cooldown after IVC rebuild.
Tower thermometer is reading high, probably this is a thermometer problem and the actual temperature is much lower. High noise in some of the charge channels.
Setup: DIB1/2+acc → SL 41/43 → 3.2 MHz filters → cables 2/3 → nothing/Source_mover_board+HV_diverter_board → DCRC50(3)/55(1). Kepco 40V supplye → HV BNC. No lead/poly shield. Currently DCRC55(1) is disconnected and off, Cable 3 plugged into source mover board only.
0940 Tower/MC/Coldplate = 169/35.4/208 mK, Still = 1.35 K / 0.075 mbar / 0 mW, G1/G2= 278/252 mbar, 1K Pot = 1.63 K / 20±1 mbar. MB = 68.8%
0940 Fill LN2 cold trap bath.

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