Minutes of the May 28, 2010 Tevatron Dept Meeting

http://indico.fnal.gov/conferenceDisplay.py?confId=3381

* Weekly Operation Summary (Bruce Hanna) - The Tevatron delivered 95 pb^-1
over the past 2 weeks.  There have been 16 HEP stores with initial luminosities
between 187 and 376 ub^-1/s.  Four stores were lost prematurely due to a 
variety of reasons.  Four other shots were lost due to quenches in the
squeeze (one had an dipole corrector trip off, 2 others had poor orbits through
the IPs, another had very high proton losses exacerbated by 4 pbar bunches
being injected into the wrong RF buckets).  Pbar longitudinal blow-ups still
occur, but we may have a lead into the problem - correlation with total RF
voltage being lower since long shutdown?  Various cryo maintenance was
performed.  An aperture scan of the CDF IP was completed - analysis underway.
No tune or chromaticity trackers until 21 MHz signal repaired at A1.

* Shutdown Planning (Jim Volk) - Jim summarized overall plan, including
scheduled site-wide power outage schedule.  Tevatron will kept a 4K except for
houses needing work.  Tunnel access begins July 19.  Tevatron cold for start-up
by August 13.  Tevatron work includes warming up A3 to fix cold leak, maybe F1
as time allows.  There are the usual magnet roll measurements, as-founds, and
unrolling as needed.  Reinstall vertical goniometer with new crystal
collimators.  TEL-2 gun replacement. E17 flying wire repair.  Install beam
profile pixel detectors at E0 and maybe F17.  Tighten clamps on all kautzky
valves.  Other typical maintenance.

* Plans for Next Week (All)

   - Get back to smooth operation and deliver luminosity.
   - Test new coupling measurement algorithm (Eliana, shot-setup or p-only)
   - Fix tune and chromaticity trackers