User name R. Michaels
Log entry time 21:10:59 on March22,2007
Entry number 196976
Followups:
keyword=the story of spot++The Left arm spot_L is problematic in BPMA -- see fig 1. Probably
the fastbus cable is pulling out of the sockets and the connection
is poor. This is for run 1835.
Meanwhile the Right arm data look ok (use spot_R) -- see fig 2.
To compare these we needed to look at the SAME histogram limits,
so I adjusted this for R-arm. Conclusion is the BPM data
is ok, and does not contradict EPICS. Recall, the spot++
sign convention for X is opposite to EPICS because spot++ agrees
with spectrometer coordinate system.
Taking access to check the L-arm cabling since there is no beam.
FIGURE 1
FIGURE 2
