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Recent Antiproton Source Operations

Recent Antiproton Source Operations. Keith Gollwitzer Antiproton Source Department Accelerator Division Fermilab 5 May 2008. 10mm-2 2220V 2400V. 10mm-3 2600V. Steel 1830V. Stack Rate (mA/hr). Stack Size (mA).

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Recent Antiproton Source Operations

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  1. Recent Antiproton Source Operations Keith Gollwitzer Antiproton Source Department Accelerator Division Fermilab 5 May 2008

  2. 10mm-2 2220V 2400V 10mm-3 2600V Steel 1830V Stack Rate (mA/hr) Stack Size (mA) 1/1/2008 2/1 3/1 4/1 5/1

  3. 10mm-2 2220V 2400V 10mm-3 2600V Steel 1830V Stack Rate (mA/hr) Stack Size (mA) 1/1/2008 2/1 3/1 4/1 5/1 Record Accumulator Beam Current 313.58mA February 21

  4. 10mm-2 2220V 2400V 10mm-3 2600V Steel 1830V Stack Rate (mA/hr) Stack Size (mA) 1/1/2008 2/1 3/1 4/1 5/1 Jan 29 25.19mA May 5 26.09mA May 3 25.95mA Jan 8 24.69mA Apr 6 25.32mA Apr 8 25.90mA Mar 26 25.29mA Progression of Stacked Antiprotons in 1 hour Record

  5. 10mm-5 Lens-transformer assembly is complete and ready for testing 10mm-3 Lens-transformer assembly has a new stripline and is the spare Stripline failure early March

  6. Studies and Tuning • Debuncher Momentum Cooling Systems • Gain Ramps – determined no affect for 2.2sec cycle • Double Notch Filter • Not achieving desired notch depth • Thinking about new notch filter equalizer • Individual band equalizers - designed first; await chance to install • Accumulator Stacktail System • Delta Kicker to compensate for transverse heating by system • Some quick gains seen • “Centering” of 2 kicker tanks achieved the same effect; need to do all 10 • May still get benefit with new equalizers • Accumulator Transverse Cooling Systems • Individual band equalizers – first should be ready soon • AP2/Debuncher Optics • More circulating beam by moving Debuncher tunes • Decreases Debuncher cooling effectiveness – reverted to design tunes • More beam into Debuncher with some AP2 optics changes - ongoing • Mechanics of transfers out of Accumulator • Rapid transfers covered last All Experimenters’ Meeting

  7. May 4 Jan 1 0 Stack rate (mA/hr) 24 32 0 Stack size (mA) 80

  8. Summary • The Antiproton Source is running well • Outlook is promising • Recent Records • 313.58mA in Accumulator • 26.09mA in 1 hour • 3065.6mA in 1 week (Mon-Mon 00:00)

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