Basic Error & Multipole Error for MEIC Ion Ring

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Presentation transcript:

Basic Error & Multipole Error for MEIC Ion Ring G. Wei, V.S. Morozov, Fanglei Lin MEIC R&D Meeting, JLab, Aug 18, 2015 F. Lin

Contents Study of basic error Study of multipole error of magnets Summary

Error Study Basic error in step 1: Magnet: misalignment of 3-D, x-y rotation, and strength error FFQ: error neglected in the initial study, to keep (x=x’=0 & y=y’=0) & nonlinear effect @ IP FFQ in KEKB study: 10 % of normal Quads IPAC14’ MOPRO005, V.S. Morozov,etc

Error Study Dipole Quadrupole Sextupole BPM(noise) Corrector x misalignment(mm) 0.1 0.02 - y misalignment(mm) x-y rotation(mrad) s misalignment(mm) Strength error(%) 0.01 Error: Gaussian distributions with a cut-off at 3 standard deviations.

Super B SuperB Progress Reports

slac-r-418a-PEPII: PEPII CDR June 1993

Summary Super computer is needed Seeds number is needed to think about.