Studies Review: 08/25/03

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Studies Review 08/25/03 09/08/03
Doug Moehs FNAL

• Machine Studies Weeks

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Stores Summary
Store Initial Lum. (E30) Delivd Lum. (nb-1) Termination Time (hr) Stack/ Unstack (mA) Comments
2943 39.7 1484 Intentional 19.1 132/115 Pbars 70.7 to HEP
2953 36 1145 Intentional 15.5 112/101 New Helix Pbars 71.7 to HEP
2975 28.36 968 Intentional 17 80/73 Lost 2 stores to Cogging 78.4 of Pbars to HEP
2977 41.7 1708 Intentional 17.7 149/134
2979 42 863 Quench 7.1 175/157 61.3 of Pbars to HEP
2985 34 1315 Intentional 17.4 134/122 2.5 MHz transfers Trans. Dampers off No MI closure
2988 35.9 828 Intentional 13.2 157/141 Trans. Dampers off TEL troubles RF1 turned off New 150 GeV optics
2997 40.7 1555 Intentional 19.5 118/101 Last store of the fiscal year Trans. Damp. Recom. 75.3 of Pbars to HEP
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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

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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

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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

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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

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Automated Tune Measurement
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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 0800 on September 2
• Activation in the Linac reduced by a Factor of 2

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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