Simulation Study of the Run II Luminosity Monitor Multiple Interaction Trigger Flags.pdfVIP

D note Draft Version August T Simulation Study of the Run I I Luminosity Monitor Multiple Interaction Trigger Flags ChyiChang Miao and Richard Partridge F Abstract The online multiple interaction to ol based on the Run I I Lumi nosity Monitor design needs to b e optimized for the upgrade of the accelerators We simulate several p ossible algorithms for dierent ac celerator op eration scenarios asso ciated with bunch spacing and sup er conducting RF upgrade The relevant Luminosity Monitor electronics will b e mo died based on the simulation results A Intro duction In this note we describ e studies of online multiple interaction MI to ol based on the prop osed Luminosity Monitor LM design under p ossible accelerator op erations The accelerator op eration scenarios include ns bunch spacing ns bunch spacing without sup erconducting RF upgrade R ns bunch spacing with sup erconducting RF upgrade The Run I I base plan for the accelerator op eration is to get to p eak lu minosities of ab out E with nsec b etween crossings and interactions p er crossing in the b eginning Further improvement would lead to ns b etween crossings with interaction p er crossing The ns bunch spacing D op eration requires separators to make the crossing angles near the pp colli sion p oint The length of the luminous region is therefore shorter than