Log entry time 01:16:11 on March 27, 2011

Entry number 353343

Followups:

• 353345 03/27/11 01:33 eip optimal beam current ?

I performed additional check for the double coinc rates with different
currents:

2 uA   run# 3056  - 0.00735 C
4 uA   run# 3044  - 0.01963 C
5 uA   run# 3068  - 0.02421 C
8 uA   run# 3055  - 0.02949 C

Atached 8 figures for BB and HAND with different currents.

Result BB:

2uA  -  249 +- 25
4uA  -  500 +- 37
5uA  -  629 +- 44
8uA  -  1128 +- 73

Result HAND:

2uA  -  2303 +-121
4uA  -  7128 +-196
5uA  -  9752 +- 238
8uA  -  21975 +-420


Red Lines on each plot define the peak region that I used. Number of
events normalized to 60 mins run.

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8