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2011/10/30

1111 'Not enough memory to complete this operation' error occurred at 21:53 last night. Connection to DCRC30 was also lost.
1122 Signals on DCRC33 are smaller than that on DCRC30 and sometimes going downward. This maybe because DCRC33 was under bias all the time.
1126 Flash detector for 10min and the retake -13V Ba data.
1309 Stop data 07111030_1301 and start data 07111030_1309_F0001. Connection to DCRC30 was lost. Bias -13V with Ba source. take 3 series.
1426 DAQ error occurred at 07111030_1309_F0014 Event 141898.
1430 Flash detector for 6s and then take +13V ba data. Tower temperature 58mK.
1558 +13V data 07111030_1456_F0016 was finished. Raise Tower temperature to 400mK.
1715 Temperature fluctuates around 400mK with amplitude ~+/- 4mK. Change P=10 and I=120 to P=10 and I=0.
1728 Temperature fluctuates around 370mK and is noisy. Increase P to 20.
1730 Temperature rise to ~380mK. Increase P to 100.
1732 P=200.
1734 P=400.
1739 Change heater range from IGH=2mW, LS370=10mA to IGH=20mW and LS370=3.16mA. P=200.
1740 P=50
1743 P=10
1745 P=20.
1755 P=10, I=60
1808 Temperature at 400mK is not stable. take some -13V data anyway. 07111030_1808
1811 Connection to DCRC 30 was reset.
1814 start take data again.
1924 Take +13V data 07111030_1924_F0001 after 6s flashing.
2002 He bath is dry, stop 1K pot.
2006 Stop circulation. Pump mixture out from the still side.
2008 Temperature was kept 400+/-5mK until this moment. Over shoot up to 425mK observed after this point.
2028 Temperature went up to 440mK at some point of the later data.