Minutes of the April 24, 2009 Tevatron Dept Meeting http://indico.fnal.gov/conferenceDisplay.py?confId=2535 * News (Ron) - There will be a computer security assessment soon - as always, be vigilant about leaving your computer locked, scam emails, etc. As new avenues of outreach, now you can follow the Tevatron on Facebook and Twitter! http://www.facebook.com/pages/Tevatron/72078614069 http://twitter.com/tevatron * Weekly Operations Summary (Xiaolong Zhang) - Quite a smooth week! The Tevatron delivered a record 73.1 pb^-1 during the "official" Monday-to-Monday reporting week. The Friday-to-Friday number is 72.8 pb^-1, and it even exceeded 78 pb^-1 during a part of a rolling 168 hr period. There have been 10 stores, all terminated intentionally, all exceeding 300 ub^-1/s initial luminosity except for one, 288 ub^-1/s, due to limited pbars after an access into the Main Injector. A few BPM houses have hung up recently requiring reboots - it's not clear what is wrong. The F17 proton injection kicker needed to have a HV power supply replaced. The crystal collimator was used for stores 6984 and 6989. * Preview of PAC Talk (Cons Gattuso) - Cons gave a practice talk of his presentation on optimizing performance of the collider program - MO4RAC03. * History of Tevatro Orbit RMS (Dean Still) - Following up on Alex's presentation from last week, Dean dug up orbit difference RMS data from a couple years' worth of stores - before and after orbit stabilization, automated smoothing, and implementing additional correctors. To noone's surprise, the machine is more stable (in terms of tune changes, etc.) with more consistent control of store-to-store orbits. * Plan for Next Week (All) - Continue stable operation delivering luminosity. - There are no pressing needs, but should time become available... - Bumper magnet as abort gap cleaner (Bruce et al, proton-only) - Lattice measurements - Chromaticity tracker (Tan, proton-only) - Test of BPM electronics recabling (Marv et al., 1 house)