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Title: Progress regarding the optics configuration of ER@CEBAF 7+ GeV, 5-pass, energy recovery experiment

Authors:
; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
OSTI Identifier:
1361240
Report Number(s):
BNL-113480-2017-CP
R&D Project: KBCH139; 18031; KB0202011
DOE Contract Number:
SC00112704
Resource Type:
Conference
Resource Relation:
Conference: 8th International Particle Accelerator Conference (IPAC17); Bella Center, Copenhagen, Denmark; 20170514 through 20170519
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS

Citation Formats

Meot F., Bogacz, S. A., Douglas, D., Robert-Demolaize, G., Roblin, Y., Satogata, T., Spata, M., Tennant, C., Tiefenback, M., and Korysko, P. Progress regarding the optics configuration of ER@CEBAF 7+ GeV, 5-pass, energy recovery experiment. United States: N. p., 2017. Web.
Meot F., Bogacz, S. A., Douglas, D., Robert-Demolaize, G., Roblin, Y., Satogata, T., Spata, M., Tennant, C., Tiefenback, M., & Korysko, P. Progress regarding the optics configuration of ER@CEBAF 7+ GeV, 5-pass, energy recovery experiment. United States.
Meot F., Bogacz, S. A., Douglas, D., Robert-Demolaize, G., Roblin, Y., Satogata, T., Spata, M., Tennant, C., Tiefenback, M., and Korysko, P. Sun . "Progress regarding the optics configuration of ER@CEBAF 7+ GeV, 5-pass, energy recovery experiment". United States. doi:. https://www.osti.gov/servlets/purl/1361240.
@article{osti_1361240,
title = {Progress regarding the optics configuration of ER@CEBAF 7+ GeV, 5-pass, energy recovery experiment},
author = {Meot F. and Bogacz, S. A. and Douglas, D. and Robert-Demolaize, G. and Roblin, Y. and Satogata, T. and Spata, M. and Tennant, C. and Tiefenback, M. and Korysko, P.},
abstractNote = {},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun May 14 00:00:00 EDT 2017},
month = {Sun May 14 00:00:00 EDT 2017}
}

Conference:
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  • Jefferson Lab personnel have broad expertise in the design, commissioning, and operation of multiple energy recovery linacs (ERLs): the CEBAF Front-End Test (early 1990s), CEBAF-ER (2003), the IR Free Electron Laser (FEL) Demo, the IR FEL Upgrade, and the UV FEL Driver (1997-2014). Continued development of this core competency has led to this collaborative proposal to explore the forefronts of ERL technology at high energy in a unique expansion of CEBAF capability to a 5-pass ERL with negligible switchover time and programmatic impact to the CEBAF physics program. Such a capability would enable world-class studies of open issues in high-energymore » ERL beam dynamics that are relevant to future facilities such as electron-ion colliders (EICs). This proposal requests support from the CEBAF Program Advisory Committee to seek funding for hardware installation, and a prospective 12 days of beam time circa Fall 2018 for commissioning this high-energy multi-pass ERL experiment in CEBAF.« less
  • A successful GeV scale energy recovery demonstration with a high ratio of peak-to-injection energies (50:1) was recently carried out on the CEBAF (Continuous Electron Beam Accelerator Facility) recirculating superconducting linear accelerator in an effort to address issues related to beam quality preservation in a large scale energy recovery system. To gain a quantitative understanding of the beam behavior through the machine, an intense effort was made to characterize the 6D phase space during the CEBAF-ER (CEBAF with Energy Recovery) experimental run. A scheme was implemented to measure the transverse emittance of the energy recovered beam prior to being sent tomore » the dump, as well as in the injector and in each arc. The emittance provides a figure of merit in this context inasmuch as it characterizes the extent to which beam quality is preserved during energy recovery. In addition to describing the transverse phase space, the momentum spread was measured in the injector and arcs to characterize the longitudinal phase space. Measurements also included the RF system's response to the energy recovery process. And by using a novel technique employing wire scans in conjunction with PMTs (Photomultiplier Tubes) to accurately measure the beam profile at the dump, we can qualitatively characterize beam preservation through the recirculator. One of the salient conclusions from the experiment is that the energy recovery process does not contribute to the emittance degradation since the emittance of the recirculating pass is consistent with that of the accelerating pass.« less
  • A successful GeV scale energy recovery demonstration with a high ratio of peak-to-injection energies (50:1) was carried out on the CEBAF (Continuous Electron Beam Accelerator Facility) recirculating superconducting linear accelerator in the spring of 2003. To gain a quantitative understanding of the beam behavior through the machine, data was taken to characterize the 6D phase space during the CEBAF-ER (CEBAF with Energy Recovery) experimental run. The transverse emittance of the accelerating and energy recovered beams was measured in several locations to ascertain the beam quality preservation during energy recovery. Measurements also included the RF system's response to the energy recoverymore » process and transverse beam profile of the energy recovered beam. One of the salient conclusions from the experiment is that the energy recovery process does not contribute significantly to the emittance degradation. The current status of the data analysis will be presented as well as plans for a GeV scale energy recovery experimental run with current doubling.« less