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End-of-year talk

End-of-year talk. LIU-SPS BD WG meeting 12.12.13. Our meetings in 2013. During year - 9 meetings of LIU-SPS BD WG (less than usual 12 in the past :-) Main topics : SPS impedance – 17 talks… Instabilities – 7 talks Main speakers: 5 talks: J. Varela, E. S.

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End-of-year talk

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  1. End-of-year talk LIU-SPS BD WG meeting 12.12.13

  2. Our meetings in2013 • During year - 9 meetings of LIU-SPS BD WG (less than usual 12 in the past :-) • Main topics: • SPS impedance – 17 talks… • Instabilities – 7 talks • Main speakers: • 5 talks: J. Varela, E. S. • 4 talks: T. Argyropoulos, B. Salvant, H. Timko • 3 talks – H. Bartosik, F. Caspers • Main writer: H. Bartosik - thanks a lot for Minutes!

  3. Main efforts • SPS MDs: two months in 2013 and analysis of 2012 data • LIU days • SPS beam parameters – for RLIUP • LIU-SPS reviews (10!) => talks • SPS impedance model • Particle simulations

  4. Priorities for MDs in 2013(from meeting on13.12.2012) • Reference impedance measurements (synchrotron frequency shift) in Q26 with single bunches of: • variable, in range (1-15)x1010 , intensity • constant small (0.25 eVs) longitudinal emittance • Impedance identification: long bunches with RF off in Q20 (very high intensity ~ 8x3x1010) • Single bunch stability in Q26 and Q20 (effect of bunch distribution due to the PS bunch rotation) • Single bunch stability in double RF system (Q26&Q20 =>All measurements were done and analysed. Now they should be compared with simulations

  5. B. Goddard LIU-SPS 800 MHz RF 12 December 2013

  6. Plans for 2014 • Beam re-commissioning after LS1 • E-cloud: SPS scrubbing (do we need Ac-coating?) • Preparation of the LHC beam: 50 ns & 25 ns (BCMS) • Pushing intensity of 25 ns beam to the maximum • Preparation of doublets for scrubbing of LHC - new (longer) magnetic cycle - LLRF, transverse damper • SPS MDs • Effort for SPS impedance identification • Space charge studies • LIU day on 11 April 2014

  7. Injector schedule for 2014 MDs?

  8. Merry Christmas!Happy New Year!

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