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2012/03/22

0945 Fill LN2 cold trap.
Randoms have trace length 4.096ms. LabView PSDs have trace length 10ms. Fridge side lights off in the lab.
1351 07120322_1351. DCRC32 on rigid side coax, DCRC33 on flex cable. Hammering the frame. 500 Randoms.
1416 07120322_1416 DCRC33 with flex cable and hammering the frame. 500 Randoms.
1439 07120322_1439. 500 randoms, DCRC32 with flex cable at rest.
1442 07120322_1442. 500 randoms, DCRC32 with flex cable with hammering the frame.
1444 07120322_1444. 500 randoms, DCRC33 with rigid side coax at rest.
1651 07120322_1651. DCRC33 on rigid side coax, DCRC32 on flex cable. At rest. 500 Randoms.
1659 07120322_1659. DCRC33 on rigid side coax, DCRC32 on flex cable. Hammering the frame. 500 Randoms.
1721 07120322_1721. 500 randoms, DCRC32 with flex cable at rest.
1723 07120322_1723. DCRC32 with flex cable and hammering the frame. 500 Randoms.
1816 07120322_1816. 500 randoms, DCRC33 with rigid side coax at rest.
1822 07120322_1822. 500 randoms, DCRC33 with rigid cable with hammering the frame.
1942 Charge amp gain measurement using DCRC33. Input signal 10kHz, 5mVpp. Output: (SL19, Qi)~750mVpp; (SL19, Qo)~700mVpp; (SL20, Qi)~640mVpp; (SL20, Qo)~580mVpp.
1947 He level 21.2%. Filled N2 cold trap with the reset of the N2.
1953 Stop 1K pot and pump out mixture. Warm up fridge.

Charge Noise PSDs

Figure 1: DCRC32 attached to Flexible Side Coax; DCRC33 attached to Vacuum Side Coax.
Figure 2: DCRC33 attached to Flexible Side Coax; DCRC32 attached to Vacuum Side Coax.
Figure 3: DCRC32 attached to both side coaxes
Figure 4: DCRC33 attached to both side coaxes