Summary from RSVP Extinction Conference http:www'agsrhichome'bnl'govPeoplekbrownrsvpExtinction'html

1
Summary from RSVP Extinction Conferencehttp//www
.agsrhichome.bnl.gov/People/kbrown/rsvp/Extinction
.html

• Kevin Brown
• kbrown_at_bnl.gov

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Attendees

• L.Ahrens
• D.Beavis
• A. Hatzikoutelis (VRVS)
• K.Brown
• I H. Chiang
• I.Christidi
• J.W.Glenn
• J.Kotcher
• L.Littenberg
• A.Mincer
• B.Morse
• P.Pile
• Y.Semertzidis
• M.Sivertz
• P.Yamin

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Agenda (as followed)

• Overview of new guidelines and floor availability
  P.Pile
• Using B line for KOPIO measurements
  Dana Beavis
• Some Comments on languange.
  K.Brown
• KOPIO bunch width and extinction measurements
  M.Sivertz
• Measuring extinction using Electo-Optical Effect
  Y. Semertzidis
• Using C-Line for RSVP extinction measurements
  M.Sivertz, I Hung Chiang,
  A.Mincer
• Pre-Extraction RSVP Extinction tests
  Woody Glenn

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Summary

• Participants agreed there is no longer any need
  for studies to be done in D line. D line can be
  removed immediately.
• C line and LESB III are seen as low priority
  options for beam development studies. The
  preference is to have B line and A line ready in
  2008 as locations to dump beam and perform
  studies.
• Action items
• MECO Time distribution around bunch that is
  tolerable for extinction.
• MECO change in sensitivity when running 1 bunch
  instead of 2 (note this option has a number of
  appealing features and has the potential of
  reducing construction costs).
• RSVP language glossary KAB
• RSVP Electro-Optical effect extinction monitor
  external for KOPIO, is it feasible? (perhaps
  with pulsed laser). Internal for MECO- details
  need work.
• RSVP Both experiments need to define more
  clearly, and with some detail, what beam tests
  they need to do.

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Pre-Extraction Measurements

• This is a summary of Woodys talk, which focused
  on MECO measurements that can be done with either
  no extraction or at low intensity extraction.
• Simulations! (true for both experiments)
• need to simulate with large amplitude particles
  in Longitudinal phase space, to see what the
  effect of the very low synchrotron frequency
  particles will have.
• simulate particles outside RF bucket and how
  they become populated
• Observe how adjacent RF buckets get filled (in
  AGS Ring test)
• Kick out individual bunches, and observe what
  is left over.
• Use present AC-dipole to understand inter-bunch
  protons (what happens ?, how does the AC-dipole
  have to run, frequency sweep ?, etc. )
• 8 GeV extraction spill structure. Could
  extract to a W-line type of dump with polarized
  proton intensities.