Minutes of the June 22 Tevatron Dept Meeting https://indico.fnal.gov/conferenceDisplay.py?confId=918 * News (Ron) - It's nearly time to start completing your yearly accomplishment reports; you can download the forms via the URL http://wdrs.fnal.gov/elr/perform_rev.html Choose "Employee" or "Scientist" as appropriate. * Weekly Operations Summary (Xiaolong Zhang) - The Tevatron delivered just over 33 pb^-1 over the past 7 days. There were 7 HEP stores with initial luminosities between 83 and 219 ub^-1/s. The lower luminosities arose from losing most of a Recycler pbar stash during one shot-setup and a Tevatron store (#5501) that ended after only 1/2 an hour when the C1 frig went unstable because rain coming in an open roof hatch soaked electronics. An access was needed to fill a fluorinert reservoir for the F17 proton injection kickers. The D0 low-beta quads have been moving more lately due to the hot weather; D0 and Tev personnel met to discuss ideas on how to better control the air flow between the collision hall and the Tev tunnel. The B11 vertical separator separator sparked late in store 5503; the store survived but beam emittances blew-up. The vertical chromaticity at low-beta was reduced 2 units to account for changes since implementing the new second-order chromaticity sextupoles. We have been lowering the pbar vertical tune at injection in steps to help improve pbar efficiency at 150 GeV. A vertical angle bump through F0 was made to (possibly) mitigate pbar longitudinal emittance blow-ups soon after collisions are initiated; no blow-ups have been seen since the change, but there has only been 1 store with longitudinal brightness. No good solution has been found for reducing the large min tune split ~0.01 on the pbar pbar collision helix. * Plan for Next Week - Luminosity, luminosity, luminosity. - Enjoy PAC 07 in Albuquerque. - Continue tweaking the 150 GeV and low-beta settings to improve performance - Raise CDF IP by 0.5 mm vertically upon request. - Reduced study requests due to various experts attending PAC.