Minutes of the April 16, 2010 Tevatron Dept Meeting

http://indico.fnal.gov/conferenceDisplay.py?confId=3298

* Weekly Operations Summary (Xiaolong Zhang) - The Tevatron delivered 54 pb^-1
to the experiments over the past 7 days.  There have been 8 stores with initial
luminosities between 272 and a *new record* 378 ub^-1/s; all terminations have
been intentional.  There was a maintenance day driven by isolating the fault on
Feeder 46A (Tevatron ring cryo compressors); there were long acceses into CDF,
D0, and the Tevatron.  Tevatron work included: B1 sump replacement, leak 
checking in F1 and P150 line (leaks found and repaired), separator 
conditioning.  The F2 house was also derimed, but recovery took much longer 
than expected due to a failed expander valve and melting an additional 
blockage.  Following a network problem, the synchrotron light monitor has
not been returning any beam data.  An apparent HV cable in the tunnel has
rendered useless several beam loss monitors in B1; an access is needed soon to
investigate, as we rely on some of these for tuning.

* Investigating Higher-Order Mode Power in RF Cavities (John Reid) - Postponed
again since John got called away on short notice to repair a water valve for
the Main Injector RF system.

* Plan for Next Week (All)

   - Deliver luminosity!
   - Crystal Collimator (Dean et al., end-of-store)
   - Pbar-only store? (verify BPM TBT timing, coupling on ramp, lattice 
                       measurements)
   - 150 GeV Chromaticity Study (Tan, proton-only)
   - B0/D0 Aperture Scans (Bruce, Alex, proton-only)