[Xrayops] Head's up on POTENTIAL operational issues
APS Experiment Hall X-ray Operations Problem List
xrayops at mailman.aps.anl.gov
Fri Mar 18 21:22:40 CDT 2011
Top-Up mode requires that charge is injected into the
APS Storage Ring at ~2 minute intervals. This requires
that the entire electron injection complex be operating.
ASD is reporting anomalous behavior with the electron
gun that currently provides Top-Up. There is a chance that
the gun performance might degrade over the weekend and
contingency plans have been put in place. This email
is to advise you of those plans.
ASD may have to switch to a second gun which may be able to
keep top-up going but at 1 minute intervals. If for some
reason, Top-Up can not be maintained, fill-on-fills will be
performed every six hours. The situation with the guns
will be examined further during the upcoming scheduled
maintenance day on Tuesday, 22 March 2011.
Associate Division Director - Mechanical and Interlock Systems
APS Engineering Support Division
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