f All Experimenters' Mtg - 6 Jan 03 Week in Review: 12/30/02 –1/05/03 Ron Moore – FNAL Store Summary – Best week! > 7 pb -1 Machine Studies/Maintenance Schedule for Week

f All Experimenters' Mtg - 6 Jan 03R. Moore - FNAL2 Store Summary Store Initial Lumi Deliv’d Lumi TerminationComments F48 on abort A11 at flattop before squeeze Intentional Shot from 100 mA stack; F48 on abort – pbar orbit too high Intentional Shot from 120 mA stack; Only 11% pbar loss up ramp; end-of-store studies IntentionalNo changes; 11% pbar loss on ramp again IntentionalNo changes; 11% pbar loss on ramp again Intentional Poorer pbar 150 GeV; 2 hrs end-of-store studies

f All Experimenters' Mtg - 6 Jan 03R. Moore - FNAL3 #2138 L=29.7 #2136 L=30.3 #2134 L= shifts maintenance #2123 L=25.5 #2121 L=21.8 #2116 lost at flattop #2114 L=30.7 Tev study RR shots RR shots RR shots RR shots RR shots

f All Experimenters' Mtg - 6 Jan 03R. Moore - FNAL6 Tevatron Pbar loss up ramp much improved –The little chromaticity changes finally made an impact –Loss down to typical 10-12% from 18-20% Measured chromaticities up ramp –First time since making many small changes –Requires 2-3 ramps at various RF frequency settings Smoothed flattop, squeeze orbits –Pbars were too high at A0, could not abort cleanly Tested software to help automate aperture scans –Computing Division contributing to project –Successful! Continue implementation…

f All Experimenters' Mtg - 6 Jan 03R. Moore - FNAL7 Chromaticity on Pbar Helix on Ramp Dec 18 Jan 3 Desired values Uncertainty  2 units

f All Experimenters' Mtg - 6 Jan 03R. Moore - FNAL8 Test of Aperture Scan Software Horz corrector E42 Horz corrector E44

f All Experimenters' Mtg - 6 Jan 03R. Moore - FNAL9 Recycler Pbar Shots 5 attempts throughout last week Best transfer Accumulator  Recycler efficiency = 87% Shot-setup + shots down to 45 minutes Exercising multiwires in transfer line –First successful operation –Lower transfer efficiency when wires in See instability in stashed beam – cause unknown Poor lifetimes during shots, while merging beam Extracted and accelerated in Main Injector –Still not coalescing in MI Try to get 100 E10 in Recycler this week

RR21 transfer line multiwires

Recycler instability RR intensity E11 MI mag power RR V emit pi mm mrad RR H emit pi mm mrad

RR intensity E11 ACC intensity E10 RR V emit pi mm mrad RR H emit pi mm mrad Recycler shots on 1/05

f All Experimenters' Mtg - 6 Jan 03R. Moore - FNAL13 This Week’s Schedule Access today until 16:00, turn-on in evening 5 shifts studies/maintenance starting this evening? –Pbar stacking studies with small stacks –Shoot to Pbars to Recycler Expect next HEP shot Wednesday evening Booster cool-down begins Sat 1/11 –Reduce MiniBoone rate –Reduce # turns used for stacking Tevatron store terminated by 22:00 1/12 for cryo

Weekly Schedule

f All Experimenters' Mtg - 6 Jan 03R. Moore - FNAL15 Summary Best week for delivered luminosity: > 7 pb -1 –1 store lost before collisions, 2 shifts studies, Recycler pbar shots Achieved 87% Accumulator  Recycler transfer eff. –Lifetime waiting for shot, instabilities are problems Access ending for Tevatron surveys, Main Injector RF repair, vacuum work 5 shifts of dedicated studies this week Stack and store from Wednesday evening until Sunday 22:00 Long shutdown begins Jan 13…