Minutes of the 3 Sep 2010 Tevatron Dept Meeting

http://indico.fnal.gov/conferenceDisplay.py?confId=3577

* News (Ron) - The Fermilab Physics Advisory Committee has recommended
extending the Collider Run through 2014.

* Weekly Operations Summary (Bruce Hanna) - The Tevatron delivered 37 pb^-1 to
the experiments over the past 7 days.  There have been 8 HEP stores with
initial luminosities between 167 and 282 ub^-1/s.  Two shots ended in quenches
before reaching collisions: one apparently was a training quench, while the
other was caused by beam loss while initiating collisions.  One store, store
8051, was aborted after only 2.2 hrs when the F3 cryo vacuum suddenly went bad;
we are still trying to fix a leak in-situ, but it could very well require a
warm-up to repair.  We have been fighting changing orbits exacerbated by 
CDF collision hall HVAC changes and stuck ventilation louvres in A4.  We have
also changed our orbit-smoothing scheme to improve of the position and angle
through the interaction points.  The TEL-2 hollow e-beam gun was timed to the
abort gap and saw no effect on the bunched beam (good).

* A Summer with Crystal Collimators (Alexander Vlasov) - Alex, a summer intern
from Moscow State Univ., gave a nice summary of his work helping analyze the
many, many crystal collimator scans with various crystals.  They verified
fitting functions that describe the observations from the various phenomenon
(channeling, volume reflection, etc.) and compared simulation and data.  They
also confirmed the Gaussian profile expected for channeling efficiency vs
crystal angle.

* Plan for Next Week

   - Hopefully deliver luminosity if the F39 vacuum leak can be repaired.
   - Tune mult calibration (Ron, 2 hr EOS)