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Kevin Brown kbrown@bnl

Summary from RSVP Extinction Conference http://www.agsrhichome.bnl.gov/People/kbrown/rsvp/Extinction.html. Kevin Brown kbrown@bnl.gov. 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

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Kevin Brown kbrown@bnl

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

  2. 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

  3. 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

  4. 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.

  5. Pre-Extraction Measurements This is a summary of Woody’s 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.

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