User name nakahara
Log entry time 23:43:04 on May 13,2004
Entry number 85013
keyword=Beam: Beam current fluctuationsWhile I was there, I asked around/investigated the HallC current
fluctuation problem with one of the MCC crews (sorry, no injector experts
there). We found that this fluctuation may have started around May 1st
as shown in Figure4. We were running at 20uA at that time (Frame).
Between 18:00 and 21:30 that night, the current suddenly became noisy by
a factor of 2 or so. MCC crew (Tim) looked through the ELOG, and I
through G0log. We found a few things in the machine that happened at
that time (increased beam loss in LINAC, HallA energy spread change), but
nothing definitive.
I've sent an email to Reza to see if he can try to improve the stability
of the transmission in the front end.
FIGURE 1
