Minutes of the Feb 25, 2011 Tevatron Dept Meeting

https://indico.fnal.gov/conferenceDisplay.py?confId=4134

* News (Ron) - A reminder about the laboratory tornado safety drill at 10:00
on Tuesday 1 March - please participate as appopriate in the area you are at
that time.

* Weekly Operations Summary (Jerry Annala) - The Tevatron delivered 42 pb^-1
over the past week.  There have been 8 stores with initial luminosity between
103 and 330 ub^-1/s.  All the stores were terminated intentionally.  The 
vacuum leak at the D17 collimators that developed last Friday was on a bellows
between 2 collimators; it was replaced.  Duting that time, one of the crystal
collimator goniometer was removed in preparation for installing a new crystal
in March.  The first 4 stores of this week had low initial luminosity due
to lingering problems with the Pelletron (electron cooling for Recycler). The
last (still ongoing) store #8527 has been kept spinning for over 43 hours due 
to problems in the Pbar Source and Main Injector; that store now has the record
for highest delivered luminosity in a single store > 12 pb^-1.  A first attempt
at beam-based alignment of a low-beta quad was completed; EE support worked to
put an AC signal on the C4Q3 magnet (~1A at 0.3-1 Hz).  The obtained data look
good; additional analysis need to be done and the exercise repeated with the
other 5 triplet magnets at D0.

* Plan for Next Week (All)

   - Deliver luminosity.
   - Hollow e-beam collimation (Valishev/Stancari, end-of-HEP)
   - Pbar longitudinal damper (Tan, proton-only then pbar-only)
   - Electron Cloud (Xiaolong, 1 hr proton-only)
   - Test of RF Reduction (Ron, 30 min proton-only @ 150 GeV)