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Studies Review: 08/25/03 – 09/08/03 PowerPoint Presentation
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Studies Review: 08/25/03 – 09/08/03

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Studies Review: 08/25/03 – 09/08/03 - PowerPoint PPT Presentation

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Studies Review: 08/25/03 – 09/08/03
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  1. Machine Studies Weeks Studies Review: 08/25/03 – 09/08/03 Doug Moehs – FNAL

  2. Stores Summary Doug Moehs (Phil. 4:6-9)

  3. Brief Study Summary • Focused on machine studies for the last 2 weeks • Semiparasitic studies • whenever stacking for a store • 10% of timeline • Dedicated study periods separated by aprox. 16 hours. Period 1: 8-12 hours of Pbar and/or MI studies Period 2: 8-12 hours of TeV studies • 2 stores between study periods • Stack and store through the weekends • In addition to studies, over the last 2 weeks: • Approximately 140 store hours over the last two weeks • Integrated just under 10 pb-1 Doug Moehs (Phil. 4:6-9)

  4. TeV Studies and Changes • Studies • Losses during the squeeze and at CDF • Commissioned new high energy ramp helix • Recommissioned transverse dampers • Commissioned new optics at 150 GeV • Standard maintenance studies included: • Two 36x4 stores to find a cogging problem • Work on the TEL • 16 Hour accesses to optimize the Fall shutdown • Cold lift measurements • As found measurements Doug Moehs (Phil. 4:6-9)

  5. Machine Updates • Main Injector • Commissioned 2.5 MHz transfers along with Antiproton Source • Measure current optics of MI-8 line • SY120 • 8 hour shutdown: Installed and tested new septa motors • Preparation for “slow” resonant extraction • Fast extraction: physics run • Slip stacking • NuMI multi-batch acceleration: • Achieved intensities up to 2.3E13 with 5% loss • 2.5MHz acceleration • MI transverse dampers Doug Moehs (Phil. 4:6-9)

  6. Machine Updates • Antiproton Source • Debuncher studies • Reverse proton studies • Complete set of admittance measurements • Proton emittance growth • Accumulator dispersion • AP2 BPMs • Accumulator tunes across the aperture • measurements automated Doug Moehs (Phil. 4:6-9)

  7. Automated Tune Measurement Doug Moehs (Phil. 4:6-9)

  8. Machine Updates • Recycler • 8 hour shutdown: Installed final 2 houses of new BPMs • Commissioning new BPM system • Commissioning Ion Clearing Current Monitors • Old BPMs used in place of ion gauges • Proton Source • Cogging studies for NuMI-multibatch injection • Turned off MiniBooNE at 08:00 on September 2 • Activation in the Linac reduced by a Factor of 2 Doug Moehs (Phil. 4:6-9)

  9. Linac Activation Reduction Associated with Turning off MiniBooNE Ratio of one foot measurements on 9/7/03 and 9/2/03 The last bar is an average of all data points Slide provided by Elliott McCrory Doug Moehs (Phil. 4:6-9)