Antiproton source startup report

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Antiproton source startup report

• Bill Ashmanskas
• Dec 17, 2004

Will not cover Lots of shutdown activity
completed safely on time by many
people http//www-bdnew.fnal.gov/pbar/documents/A
ugust20200420shutdown20update2011-15-04.pdf
Detailed analysis of FY04 performance and FY05
stacking improvements/studies planned http//beam
docs.fnal.gov/DocDB/0014/001485/001/Run2comm120204
.pdf
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Startup has gone well so far
You are here
Shot 3821 Dec 7
Pilot shot to MI Dec 6
First beam Nov 28
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Stacking at close to August 2004 levels
Red Aug 1-23 Blue Dec 9-16
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Shots before vs. after shutdown
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Recent progress

• P1,P2,AP1,AP3 corrector strengths re-measured
• Software for Debuncher improvements tested out
• Running wave beam prep component centering
• Debuncher transverse gain ramping tuned up
• emittances 25-30 smaller at 2 seconds
• 4-8 GHz PU cryo amps cleanly measure cooling
  progress
• Instrumentation
• Forward pbars visible on all D/A SEMs
• Forward pbars seen (when bunched) on D/A BPMs
• Progress with accumulator flying wires
• New AP2 BPM board has recorded its first beam
  signals
• Debuncher barrier bucket AWG tested OK

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Debuncher vertical emittance vs time in cycle
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Scanning Debuncher transverse cooling gains
Horizontal emittance vs time in cycle
Vertical emittance vs time in cycle
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Recent glitches

• Dec 4 ALQ power supply ribbon cable failed
• Dec 7 AISEP1 power supply card failed
• Dec 12 AR1LCAP incident
• Protection implemented against huge bucket areas
• Dec 4 16 accumulator damper ENI amps failed
• Dec 17 no reading on TOR910 during shot setup
• Numerous cases of wrong saved settings restored
  when switching to/from stacking

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Upcoming work

• Optimize stacktail phasing and gains with beam
• Continue to improve Debuncher apertures
• Follow through on plans for D/A and AP2 lines
• Get more of our stacking diagnostics read out /
  logged all of the time
• Expand the range of tuning/studies that can be
  done while stacking
• Given good knobs and good measurements of
  progress, operators can do magic
• Stack at 18 E10/hr ASAP

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