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Title: High Power Operation of the JLab IR FEL Driver Accelerator

Abstract

Operation of the JLab IR Upgrade FEL at CW powers in excess of 10 kW requires sustained production of high electron beam powers by the driver ERL. This in turn demands attention to numerous issues and effects, including: cathode lifetime; control of beamline and RF system vacuum during high current operation; longitudinal space charge; longitudinal and transverse matching of irregular/large volume phase space distributions; halo management; management of remnant dispersive effects; resistive wall, wake-field, and RF heating of beam vacuum chambers; the beam break up instability; the impact of coherent synchrotron radiation (both on beam quality and the performance of laser optics); magnetic component stability and reproducibility; and RF stability and reproducibility. We discuss our experience with these issues and describe the modus vivendi that has evolved during prolonged high current, high power beam and laser operation.

Authors:
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Publication Date:
Research Org.:
Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
921661
Report Number(s):
JLAB-ACT-07-697; DOE/OR/23177-0270
TRN: US0801671
DOE Contract Number:  
AC05-06OR23177
Resource Type:
Conference
Resource Relation:
Conference: 2007 IEEE Particle Accelerator Conference, Albuquerque, NM, 25-30 June 2007
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; ACCELERATORS; CATHODES; ELECTRON BEAMS; HEATING; INSTABILITY; LASERS; LIFETIME; MANAGEMENT; OPTICS; PHASE SPACE; PRODUCTION; RF SYSTEMS; SPACE CHARGE; STABILITY; SYNCHROTRON RADIATION

Citation Formats

Beard, Kevin, Benson, Stephen, Biallas, George, Boyce, James, Bullard, Donald, Coleman, James, Douglas, David, Dylla, H, Evans, Richard, Evtushenko, Pavel, Gould, Christopher, Grippo, Albert, Gubeli, Joseph, Hardy, David, Hernandez-Garcia, Carlos, Hovater, J, Jordan, Kevin, Klopf, John, Li, Rui, Moore, Steven, Neil, George, Poelker, Benard, Powers, Thomas, Preble, Joseph, Rimmer, Robert, Sexton, Daniel, Shinn, Michelle D, Tennant, Christopher, Walker, Richard, Williams, Gwyn, and Zhang, Shukui. High Power Operation of the JLab IR FEL Driver Accelerator. United States: N. p., 2007. Web.
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Beard, Kevin, Benson, Stephen, Biallas, George, Boyce, James, Bullard, Donald, Coleman, James, Douglas, David, Dylla, H, Evans, Richard, Evtushenko, Pavel, Gould, Christopher, Grippo, Albert, Gubeli, Joseph, Hardy, David, Hernandez-Garcia, Carlos, Hovater, J, Jordan, Kevin, Klopf, John, Li, Rui, Moore, Steven, Neil, George, Poelker, Benard, Powers, Thomas, Preble, Joseph, Rimmer, Robert, Sexton, Daniel, Shinn, Michelle D, Tennant, Christopher, Walker, Richard, Williams, Gwyn, & Zhang, Shukui. High Power Operation of the JLab IR FEL Driver Accelerator. United States.
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Beard, Kevin, Benson, Stephen, Biallas, George, Boyce, James, Bullard, Donald, Coleman, James, Douglas, David, Dylla, H, Evans, Richard, Evtushenko, Pavel, Gould, Christopher, Grippo, Albert, Gubeli, Joseph, Hardy, David, Hernandez-Garcia, Carlos, Hovater, J, Jordan, Kevin, Klopf, John, Li, Rui, Moore, Steven, Neil, George, Poelker, Benard, Powers, Thomas, Preble, Joseph, Rimmer, Robert, Sexton, Daniel, Shinn, Michelle D, Tennant, Christopher, Walker, Richard, Williams, Gwyn, and Zhang, Shukui. 2007. "High Power Operation of the JLab IR FEL Driver Accelerator". United States. https://www.osti.gov/servlets/purl/921661.
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@article{osti_921661,
title = {High Power Operation of the JLab IR FEL Driver Accelerator},
author = {Beard, Kevin and Benson, Stephen and Biallas, George and Boyce, James and Bullard, Donald and Coleman, James and Douglas, David and Dylla, H and Evans, Richard and Evtushenko, Pavel and Gould, Christopher and Grippo, Albert and Gubeli, Joseph and Hardy, David and Hernandez-Garcia, Carlos and Hovater, J and Jordan, Kevin and Klopf, John and Li, Rui and Moore, Steven and Neil, George and Poelker, Benard and Powers, Thomas and Preble, Joseph and Rimmer, Robert and Sexton, Daniel and Shinn, Michelle D and Tennant, Christopher and Walker, Richard and Williams, Gwyn and Zhang, Shukui},
abstractNote = {Operation of the JLab IR Upgrade FEL at CW powers in excess of 10 kW requires sustained production of high electron beam powers by the driver ERL. This in turn demands attention to numerous issues and effects, including: cathode lifetime; control of beamline and RF system vacuum during high current operation; longitudinal space charge; longitudinal and transverse matching of irregular/large volume phase space distributions; halo management; management of remnant dispersive effects; resistive wall, wake-field, and RF heating of beam vacuum chambers; the beam break up instability; the impact of coherent synchrotron radiation (both on beam quality and the performance of laser optics); magnetic component stability and reproducibility; and RF stability and reproducibility. We discuss our experience with these issues and describe the modus vivendi that has evolved during prolonged high current, high power beam and laser operation.},
doi = {},
url = {https://www.osti.gov/biblio/921661}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Aug 01 00:00:00 EDT 2007},
month = {Wed Aug 01 00:00:00 EDT 2007}
}
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