2011/12/21

DAQ error occurred at 06:32 thing morning. Connection to DCRC30 was reset. DCRC33 was under bias.

Temperature was not stable after Helium transfer. May need to release the pressure in the bath. It helped in the past.

Data taken in the last run

# -3V Ba-133
2.6G    ./07111220_2014
2.6G    ./07111220_2135
2.6G    ./07111220_2255
# +2V ba-133
2.7G    ./07111221_0019
2.8G    ./07111221_0139
2.8G    ./07111221_0300
# +3V Ba-133
2.8G    ./07111221_0424
2.2G    ./07111221_0545

900	Filled LN2 cold trap.
1057	Can not see pulses on DCRC30. Cycle the power of both boards.
1101	Saw pulses on both boards after cycling the power.
1105	0V test run 07111221_1104. Triggers and timing link looked OK. Will flash for 30min, cool down for 80min, then start taking +4, +6, +8, +10V Ba-133 data.
1900	DAQ error occurred at 15:58. Connection to DCRC30 was reset. DCRC33 was under bias +4V.

Data taken in the last run

# +4V Ba-133
2.8G    ./07111221_1309
2.8G    ./07111221_1430

1908	0V test run, trigger and timing link look fine. Will flash for 30min and cool down for 80min and then take Ba-133 data at 6, +8, +10, and +3V.
1924	Filled N2 cold trap. Connection to DCRC30 was reset at 19:20. Tower temperature dropped from 550mK to 410mK.
1932	Trigger and timing link look fine in the 0V test run.