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User name Chao
Log entry time 08:37:31 on May13,2012
Entry number 384584
Followups:
- 384590 05/13/12 08:52 mhuang Start from 6044/24707/42018
- 384591 05/13/12 09:23 Chao It is because down stream BCM is broken
The beam current strip chart suggests we were running at 35nA during the night. We checked the BCM seprately. It looks like BCMA(upstream) gives correct readout and BCMB(downstream) is 0 during the night. The strip chart is taking average of upstream and downstream so we got a number around 30nA. We will look into this problem. I attached the strip chart here.
FIGURE 1
