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User name jroche, cshloka
Log entry time 18:28:32 on September 29, 2010
Entry number 333120
Followups:
keyword=Modified DVCS calorimeter anode current epics logger + GUI needs to be modified too
Shloka Chandavar did test the epics reading of the calorimeter anode current by plugging a
battery onto the flat grey cables that are input to the ADC that actually measure this anode
current. She found that the epics variables used in the GUI are not correct. We were able to
trace the problem to a numbering problem. I (jroche) corrected the reading in the runstart
epics script and the CODA slow epics logger. But I cannot change the GUI: Alex Camsonne
should ask S. Witherspoon to do that. Until further notice, do not trust the reading on the GUI.
Some more details: this is what's in the GUI
anode current of block 0 (c,r:0,0) ==haVMI3128_1_AI1
anode current of block 1 (c,r:0,1) ==haVMI3128_1_AI2
...
anode current of block 59 (c,r:3,10)==haVMI3128_1_AI59
anode current of block 59 (c,r:3,11)==haVMI3128_1_AI60
anode current of block 60 (c,r:3,12)==haVMI3128_2_AI1 <== should be haVMI3128_1_AI61
anode current of block 61 (c,r:3,13)==haVMI3128_2_AI2 <== should be haVMI3128_1_AI62
anode current of block 62 (c,r:3,14)==haVMI3128_2_AI3 <== should be haVMI3128_1_AI63
anode current of block 63 (c,r:3,15)==haVMI3128_2_AI4 <== should be haVMI3128_1_AI64
anode current of block 63 (c,r:4,0) ==haVMI3128_2_AI5 <== should be haVMI3128_2_AI1
....
anode current of block 207 (c,r:12,15)==haVMI3128_4_AI28 <== should be
haVMI3128_4_AI16
A copy of this log entry has been emailed to: cshloka@jlab.org, camsonne@jlab.org