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2011/05/19

0120 Start overnight data series with old DAQ: data acquisition for 60 minutes; flash detector for 20 minutes; cool down for 60 minutes.
0130 Fill N2 cold trap full.
1310 Fill N2 cold trap full.
1430 DAQ had no problems. Looks like the “memory full” issue lies with the new DAQ.
Stop data overnight data series: 07110519_0120; 07110519_0340; 07110519_0600; 07110519_0820; 07110519_1040; and 07110519_1300.
1655 Started flashing the detector while Qi and Qo on both sides grounded.
1730 Stop flashing detector. Unplug DCRC boards.
2009 DCRC shield was put back on. Tower temperature 53.7mk.
2015 Powered up DCRC

Looking for Neutralisation

Figure 1: First data series 07110519_0120.
Figure 2: Second data series 07110519_0340.
Figure 3: Third data series 07110519_0600.
Figure 4: Fourth data series 07110519_0820.
Figure 5: Fifth data series 07110519_1040.
Figure 5: Sixth data series 07110519_1300.

Mean = 0.01684 ± 0.00007 (0.4%)
Standard deviation = 0.00018 (1.1% of mean)