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Title: Modeling Crabbing Dynamics in an Electron-Ion Collider

A local crabbing scheme requires π/2 (mod π) horizontal betatron phase advances from an interaction point (IP) to the crab cavities on each side of it. However, realistic phase advances generated by sets of quadrupoles, or Final Focusing Blocks (FFB), between the crab cavities located in the expanded beam regions and the IP differ slightly from π/2. To understand the effect of crabbing on the beam dynamics in this case, a simple model of the optics of the Medium Energy Electron-Ion Collider (MEIC) including local crabbing was developed using linear matrices and then studied numerically over multiple turns (1000 passes) of both electron and proton bunches. The same model was applied to both local and global crabbing schemes to determine the linear-order dynamical effects of the synchro-betatron coupling induced by crabbing.
Authors:
 [1] ;  [2] ;  [3] ;  [3]
  1. Thomas Jefferson National Accelerator Facility, Newport News, VA (United States); Old Dominion Univ., Norfolk, VA (United States); Univ. de Guanajuato (DCI-UG), Leon (Mexico)
  2. Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
  3. Thomas Jefferson National Accelerator Facility, Newport News, VA (United States); Old Dominion Univ., Norfolk, VA (United States)
Publication Date:
OSTI Identifier:
1223473
Report Number(s):
JLAB-ACC--15-2020; DOE/OR/23177--3532
TRN: US1601440
DOE Contract Number:
AC05-06OR23177
Resource Type:
Conference
Resource Relation:
Conference: IPAC 2015, Richmond, VA (United States), 3-8 May 2015
Research Org:
Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
Sponsoring Org:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; JEFFERSON LAB MEIC; ELECTRONS; BETATRON OSCILLATIONS; IONS; SYNCHROTRON OSCILLATIONS; PROTONS; QUADRUPOLES; SIMULATION; COUPLING; BEAM OPTICS