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Title: Toroidal merger simulations for the JLEIC bunched beam electron cooler ring

Abstract

The bunched beam electron cooler ring for the Jefferson Lab Electron-Ion Collider (JLEIC) requires a merger system to transport magnetized electron beams of two different energies to the same energy recovery linac (ERL) beamline. The system is especially challenging compared to existing mergers for ERL or hadron cooling applications (as at COSY) due to the small separation in energy between the two beams; for the JLEIC bunched beam cooler, the two beam energies may only differ by a factor of 4. An additional complication is the use of a magnetized beam. A toroidal merger system is studied using G4Beamline/GEANT4. Preservation of the quality of the low energy beam from the injector is especially vital for efficient cooling performance and compatibility with the ERL. Effects of the toroidal system on transverse and longitudinal emittances of the magnetized beams, as well as space charge effects, are presented and discussed.

Authors:
 [1]
  1. Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
Publication Date:
Research Org.:
Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
OSTI Identifier:
1474878
Report Number(s):
JLAB-ACP-18-2702; DOE/OR/23177-4438
DOE Contract Number:  
AC05-06OR23177
Resource Type:
Conference
Resource Relation:
Conference: IPAC 2018, 29 Apr - 04 May 2018. Vancouver, BC Canada
Country of Publication:
United States
Language:
English

Citation Formats

Sy, Amy V. Toroidal merger simulations for the JLEIC bunched beam electron cooler ring. United States: N. p., 2018. Web. doi:10.18429/JACoW-IPAC2018-THPAK127.
Sy, Amy V. Toroidal merger simulations for the JLEIC bunched beam electron cooler ring. United States. doi:10.18429/JACoW-IPAC2018-THPAK127.
Sy, Amy V. Sun . "Toroidal merger simulations for the JLEIC bunched beam electron cooler ring". United States. doi:10.18429/JACoW-IPAC2018-THPAK127. https://www.osti.gov/servlets/purl/1474878.
@article{osti_1474878,
title = {Toroidal merger simulations for the JLEIC bunched beam electron cooler ring},
author = {Sy, Amy V.},
abstractNote = {The bunched beam electron cooler ring for the Jefferson Lab Electron-Ion Collider (JLEIC) requires a merger system to transport magnetized electron beams of two different energies to the same energy recovery linac (ERL) beamline. The system is especially challenging compared to existing mergers for ERL or hadron cooling applications (as at COSY) due to the small separation in energy between the two beams; for the JLEIC bunched beam cooler, the two beam energies may only differ by a factor of 4. An additional complication is the use of a magnetized beam. A toroidal merger system is studied using G4Beamline/GEANT4. Preservation of the quality of the low energy beam from the injector is especially vital for efficient cooling performance and compatibility with the ERL. Effects of the toroidal system on transverse and longitudinal emittances of the magnetized beams, as well as space charge effects, are presented and discussed.},
doi = {10.18429/JACoW-IPAC2018-THPAK127},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {7}
}

Conference:
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