User name R. Michaels
Log entry time 07:40:25 on August26,2003
Entry number 113546
This entry is a followup to: 113543
keyword=septum stuck 409, go for P = 3.104
The septum appears to be stuck at 409 amps again (17 min).
So we adjust the momentum setting to 3.104 to match
the septum, as Jian-Ping suggested. To be on the safe
side, I also set the septum controls to 411 which is the
ratio above 409 required to achieve 409. This assures that
if the software ever "woke up" it won't go higher.
BTW, here is how to compute the momentum given the current:
P = (sqrt[14472.09 + 14.756 * I_sep ] - 120.3 ) / 7.378
I_sep = 409 yields P = 3.104 GeV/c