Minutes of the Aug 29, 2008 Tevatron Dept. Meeting

http://indico.fnal.gov/conferenceDisplay.py?confId=2011

* News - October 6 is the start of the 4-day "mini"-shutdown.

* Weekly Operations Summary (Andreas Jansson) - The Tevatron delivered 50 pb^-1
to the experiments this week - not bad considering two separate downtimes for
a wet engine overhaul, B3 power supply knife switch repair, and a 10 hr access
for D0 and crystal collimator installation.  There have been 9 HEP stores with
initial luminosities between 250 and 288 ub^-1/s; all terminated intentionally.
The B11 vertical separator sparked during store 6377 and caused a 30% drop in
luminosity.  Losses at D0 during initiate collisions were reduced significantly
by making some coupling and tune adjustments.  Beam loss during the squeeze has
been increasing recently; there are a couple of "step" losses for both pbars
and protons that need to be addressed.  The pbar injection kicker has some
timing issues to fix - that could explain some of the larger pbar emittances 
observed occasionally.

* Chromaticity Tracker Measurements (C.-Y. Tan) - From a 150 GeV drift study
two weeks ago, Tan compared chromaticity measurements from his horz 
chromaticity tracker with measurements made by hand - they agree within 0.5
to 1 unit.  It still isn't clear why the chromaticity seems to jump up after
injecting with fresh beam.

* Plan for Next Week

   - Deliver luminosity - lots of it.
   - Pbar injection kicker timing (Dan, Bruce - during shot setup)
   - Chromaticity/tune drifts @ 150 GeV (Viktoriya, Jerry, Ron - proton-only)
   - Multi-bunch proton injection (MI and Tev groups - proton-only)
   - Chromaticity tracker (Tan - proton-only)