User name paschke
Log entry time 19:24:45 on July20,2004
Entry number 129074
Followups:
keyword=New Default Configuration: BPMS in FORCED GAIN
I have had the bpm crate iocse8 (containing bpm 10) and iocse10 (containing
bpms 1, 4a, and 4b) in forced gain. This was done during run 3002, so run 3003
is production running with forced gain.
The gain settings are
X Y
iocse8 1170 1155
iocse10 1205 1185
These bpms should stay in this configuration by default for production for at
least the next two slugs. If we need to run at a current which is
significantly different than what we have right now (38 uA), we'll need to go
back to auto-gain on these bpms. MCC can
of course return to autogain whenever needed, but we should return
to forced gain for production running. If this is not possible, please page me.
I've attached screenshots of the bpm screens which can be used to verify
everything is ok. On the Accelerator Main Menu, under the BPM menu, under "BPM
diagnostics - SEE", select the "Live Display" for
iocse8 or iocse10. They should appear as below. The upper-right corner should
have the label "Forced Gain" (not autogain). The X and Y gains should match the
figures below (they are the same for all bpms in each crate). Generally, all
status indicators should be green (if we are near to 38 uA); some may show red
"unlocked" flags, but this is not serious if it is not a problem for MCC. If
many flags
are read for a single bpm, or if it is reading out x=0.000 and y=0.000 in the
top table, it is probably not reading back well.
If there are any questions about this by shifters or from MCC, please page me.
FIGURE 1
FIGURE 2
