2016/02/29 (Monday)

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	Setup: iZIP mode, DIB1/2/3 → cables → 3.2 MHz filters → DCRC55/33/50
	Taking background data overnight ended at 08:20
0857	Fill LN2 cold trap Dewar
	Tower/MC(H35)/MC sensor/Cold Plate = 30.9/26.0/39/148 mK, Still = 1.14 K / 0.095 mbar, G1/G2 = 130/124 mbar, 1K Pot = 1.60 K / 4.5 mbar, Main bath = 73.5%
	Planning to start pi-filter board tests with all three boards. The three boards have been completed - Dsub shells grounded, some connection touchups. Shields have not yet been built for two of them.
1030	Plug boards with all switches OFF into all three DCRCs, after powering down DCRCs. Then repower DCRCs and zap SQUIDs. No unusual heating or other problems seen yet.
1145	A few phonon channels railed, but adjusting Driver Offsets brings them back. All others good.
1200	Without unpowering DCRCs, attach copper shield plates to top and bottom of all pi-filter switchboards. Recheck pulses, and all look good.
1215	Perform mini IbIs on DIBS 1-3 with shielded pi-filter switchboards set to all lines OFF.
1240	Attempt flipping switches while DCRCs are powered on. Monitoring DIB1 and Tower Temperature, switch ON three random switches on DIB1's pi-filter switchboard. Doing so caused DIB1 pA&pB to rail, though all the other channels across the DIBs stayed alive. Continuing to switch ON filters causes the other channels to rail on DIB1, though DIBs 2&3 remained unrailed. Continue switching all filters on DIB1 to ON position for next mini IbIs.
1250	The additional time it takes to carefully switch all the switches while they're still connected to the DCRCs isn't worth it. Unpower all DCRCs, switch all switches to ON position, and repower DCRCs. Zap SQUIDs.
1350	Perform mini IbIs on DIBS 1-3 with shielded pi-filter switchboards set to all lines ON.
1445	Power down DCRCs and remove boards. Switch to ON all lines that are directly connected to DCRC analog ground. This is all the phonon “Return” lines plus “FET heater -”, 26 lines in all. Repower DCRCs and zap SQUIDs.
1505	Reestablish timing link. Check phonon channels, all OK after a couple of relocks. But white noise on DCRC2 pA is very wide, maybe 30 mV, normal is more like 4 mV. Power down the DCRC on DIB2.
1515	Repower DCRC on DIB2 and zap SQUIDs.
1540	Reestablish timing link, check phonons, all OK now.
1550	Perform mini IbIs on DIBS 1-3 with shielded pi-filter switchboards set to all lines that connect to DCRC Analog Ground switched ON. Power off DCRCs, detach pi-filter switchboards, reattach DSUB filter connectors on all three DIBs, and repower DCRCs. Zap SQUIDs.
1605	Fill LN2 cold trap full.
1615	Phonon channels look good.
1620	Place Ba source at fridge.

Spreadsheet of Mini-IbIs data

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