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1. Beam-beam studies:

g lobal crab-cavity simulation & theory effort. F.Z. 1. Beam-beam studies: a. K. Ohmi (KEK) - white noise - SS & WS simulations , BBSS code , scaling law with respect to noise correlation time, effect of RF curvature , luminosity estimates

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1. Beam-beam studies:

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  1. global crab-cavity simulation & theory effort F.Z. 1. Beam-beam studies: a. K. Ohmi (KEK) - white noise - SS & WS simulations, BBSS code, scaling law with respect to noise correlation time, effect of RF curvature,luminosityestimates b. Y.-P. Sun, U. Dorda, R. Tomas (CERN); R. Calaga (BNL) – single particle dynamics , Sixtrack/MADX/BBTRACK codes WS simulations, footprints, luminosity, noise spectrum,… c. J. Qiang (LBNL), SS simulations, BeamBeam3D code 2. Collimation & impedance: a. Y.-P. Sun,R. Tomas,J. Barranco, F. Zimmermann (CERN); R. Calaga(BNL) – Sixtrack/Colltracktracking,cleaning efficiency b. F. Zimmermann, E. Metral (CERN); R. Calaga (BNL),…: impedance estimates and HOM damping requirements 3. Operational scenarios: a. A. Morita (KEK); R. Calaga (BNL); R.Tomas, F. Zimmermann (CERN): crab ramping/detuning studies b. K.Oide et al (KEK): joined KEKB machine experiments & studies

  2. example: emittance growth due to crab up/down ramping F.Z. Akio Morita Akio Morita w/o tune spread with tune spread → no emittance dilution for ramp time > 10 turns → voltage ramping not a problem for Qloaded>106 Akio Morita

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