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2011/03/18

0952 Stop flashing the detectors. Flash settings: LED1 on DIB1 and LED1&2 on DIB2. 0.6mA, 100us ON, 2500us OFF.
1003 Fill N2 cold trap full
1054 Tower temperature drops to 67.4mK.
1103 Start to take data 07110318_1103_F0001. -3V on Q1-4. Trigger: 32 ADC on Q1.
1140 Stop the run at File 5. Set bias to 0, flash detectors and transfer liquid helium.
1244 Stop flashing the detectors
1405 Start taking data 07110318_1405_F0001. -4V on Q1-4. Trigger: 40ADC on Q1. Tower temperature: 67.8mK.
1453 Stop the run at 07110318_1405_F0005. Zero bias and flash detectors. Temperature goes up to 550mK.
1611 Stop flashing detectors.
1854 Start taking data 07110318_1853_F0001. -4V on Q1, 0V on Q2-4. Trigger, 40ADC on Q1. Ba-133 source.
1857 Trigger rate ~ 10Hz. A bit low.
1900 Trigger rate varies between 10 and 30.
2054 Stop the run at 07110318_1853_F0010. Zero charge biases and flash detectors. Temperature goes up to 550mK. Put Ba-133 source back to safe.
2109 Fill N2 cold trap full