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2014/05/31

1430 Install tower with: DIB1 on SQUET ZC-23+short board and Stripline 27, DIB2 on SQUET ZC-13 and stripline 19, DIB3 on SQUET 70 and Stripline 20.
1500 Short to ground noticed for all DIBs when performing electrical check. The loose socket on the 5th pin of face 6 is suspected.
1520 At unknown time He3 and He4 pumps shut off. Once noticed, they were turned back on.
1530 Uninstall SQUETs for troubleshooting purposes.
2300 After several installation and uninstallations of the SQUETs, a short between ground and every QET line on all DIBs has appeared. It is suspected that repeated removal and connection of the SQUETs has increased the looseness of the socket.
It appears that the short changes based on the movement of the loose socket, which is impossible to fix in the time allotted for the run. It has been decided to proceed with sealing up.
2330 Install SQUETs for final time and perform electrical check. Short between ground and every QET line still present. Roughly 20-50 nS between chassis and other phonon lines. This is believed to be linked to pin 5 on DIB 3 issue as well. Increased values for some phonon lines also occurred in final electrical check.