Minutes of the March 5, 2010 Tevatron Dept Head

http://indico.fnal.gov/conferenceDisplay.py?confId=3178

* Weekly Operations Summary (Bruce Hanna) - The Tevatron has delivered 64 pb^-1
to the experiments over the past 7 days.  There have been 9 HEP stores with
initial luminosities between 296 and 344 ub^-1/s, all terminated intentionally.
We also had a pbar-only store that was quite useful for gathering orbit data
and making some tune-up changes.  Raising pbar tunes in the middle of the ramp 
reduced beam loss there. Other tune and coupling changes late in the squeeze 
have reduced the pbar blow-up and improved proton lifetime.  We noticed the 
proton lifetime after the flattop cogging was poor; as a band-aid we moved that
cog until after pbar jacking to help save some protons.  The E11 horz flying
wire is dead - needs an access.  Replacing the C17 turbo station also requires
an access; cryo vacuum still OK for now.  The VC29 dipole was found responsible
for causing 2 episodes of high losses over the past 2 weeks; that card was 
found misconfigured and responding to erroneous clock events with 1 other
card (that was figured correctly).  Additional tuning needed for proton losses
during the squeeze.  Crystal collimator and TEL studies were performed this
week, too.  The RF group will build some new instrumentation to look at higher
order modes on the cavities as part of an effort to understand the continuing
pbar longitudinal blow-ups during shot-setup.

* Plan for Next Week (All)

   - Integrate luminosity.  Lots of it.
   - Pbar-only store to look at loss early on ramp.
   - Separator 1-bumps (Alex, proton-only)
   - Aperture scans at B0 and D0. (Bruce, Alex, proton-only)
   - Chromaticity measurements at 150 GeV (Tan, proton-only)