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Title: Harmonic Resonant Kicker Design for the MEIC Electron Circular Cooler Ring

Bunched-beam electron cooling of the high-energy ion beam emittance may be a crucial technology for the proposed Medium energy Electron Ion Collider (MEIC) to achieve its design luminosity. A critical component is a fast kicker system in the Circular Ring (CR) that periodically switches electron bunches in and out of the ring from and to the driver Energy Recovery Linac (ERL). Compared to a conventional strip-line type kicker, a quarter-wave resonator (QWR)-based deflecting structure has a much higher shunt impedance and so requires much less RF power. The cavity has been designed to resonate simultaneously at many harmonic modes that are integer multiples of the fundamental mode. In this way the resulting waveform will kick only a subset of the circulating bunches. In this paper, analytical shunt impedance optimization, the electromagnetic simulations of this type of cavity, as well as tuner and coupler concept designs to produce 5 odd and 5 even harmonics of 47.63MHz will be presented, in order to kick every 10th bunch in a 476.3 MHz bunch train.
Authors:
 [1] ;  [2] ;  [2]
  1. Institute of Modern Physics, CAS, Lanzhou (China); UCAS, Beijing (China)
  2. Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
Publication Date:
OSTI Identifier:
1223481
Report Number(s):
JLAB-ACC--15-2035; DOE/OR/23177--3548
TRN: US1601447
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; KICKER MAGNETS; JEFFERSON LAB MEIC; DESIGN; BEAM BUNCHING; RESONANCE; BEAM DYNAMICS; COMPARATIVE EVALUATIONS; ELECTRON COOLING; LINEAR ACCELERATORS; MHZ RANGE 100-1000; CAVITY RESONATORS; HARMONICS; ELECTRIC IMPEDANCE; ION BEAMS; PERIODICITY; BEAM EMITTANCE; ENERGY RECOVERY; WAVE FORMS; OPTIMIZATION; SIMULATION