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Title: Emittance studies of the BNL/SLAC/UCLA 1.6 cell photocathode rf gun

Abstract

The symmetrized 1.6 cell S-band photocathode gun developed by the BNL/SLAC/UCLA collaboration is in operation at the Brookhaven Accelerator Test Facility (ATF). A novel emittance compensation solenoid magnet has also been designed, built and is in operation at the ATF. These two subsystems form an emittance compensated photoinjector used for beam dynamics, advanced acceleration and free electron laser experiments at the ATF. The highest acceleration field achieved on the copper cathode is 150 MV/m, and the guns normal operating field is 130 MV/m. The maximum rf pulse length is 3 {micro}s. The transverse emittance of the photoelectron beam were measured for various injection parameters. The 1 nC emittance results are presented along with electron bunch length measurements that indicated that at above the 400 pC, space charge bunch lengthening is occurring. The thermal emittance, {epsilon}{sub o}, of the copper cathode has been measured.

Authors:
;  [1];  [2]
  1. Stanford Linear Accelerator Center, Menlo Park, CA (United States)
  2. Brookhaven National Lab., Upton, NY (United States). Accelerator Test Facility; and others
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States); California Univ., San Diego, La Jolla, CA (United States)
Sponsoring Org.:
USDOE Office of Energy Research, Washington, DC (United States)
OSTI Identifier:
495804
Report Number(s):
BNL-64466; CONF-970503-79
ON: DE97006715; TRN: 97:013243
DOE Contract Number:  
AC02-76CH00016; FG03-93ER40793
Resource Type:
Conference
Resource Relation:
Conference: 17. IEEE particle accelerator conference, Vancouver (Canada), 12-16 May 1997; Other Information: PBD: [1997]
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; ELECTRON GUNS; BEAM EMITTANCE; ACCELERATORS; ELECTRON SOURCES; PHOTOCATHODES; ELECTROMAGNETS

Citation Formats

Palmer, D T, Miller, R H, and Wang, X J. Emittance studies of the BNL/SLAC/UCLA 1.6 cell photocathode rf gun. United States: N. p., 1997. Web.
Palmer, D T, Miller, R H, & Wang, X J. Emittance studies of the BNL/SLAC/UCLA 1.6 cell photocathode rf gun. United States.
Palmer, D T, Miller, R H, and Wang, X J. 1997. "Emittance studies of the BNL/SLAC/UCLA 1.6 cell photocathode rf gun". United States. https://www.osti.gov/servlets/purl/495804.
@article{osti_495804,
title = {Emittance studies of the BNL/SLAC/UCLA 1.6 cell photocathode rf gun},
author = {Palmer, D T and Miller, R H and Wang, X J},
abstractNote = {The symmetrized 1.6 cell S-band photocathode gun developed by the BNL/SLAC/UCLA collaboration is in operation at the Brookhaven Accelerator Test Facility (ATF). A novel emittance compensation solenoid magnet has also been designed, built and is in operation at the ATF. These two subsystems form an emittance compensated photoinjector used for beam dynamics, advanced acceleration and free electron laser experiments at the ATF. The highest acceleration field achieved on the copper cathode is 150 MV/m, and the guns normal operating field is 130 MV/m. The maximum rf pulse length is 3 {micro}s. The transverse emittance of the photoelectron beam were measured for various injection parameters. The 1 nC emittance results are presented along with electron bunch length measurements that indicated that at above the 400 pC, space charge bunch lengthening is occurring. The thermal emittance, {epsilon}{sub o}, of the copper cathode has been measured.},
doi = {},
url = {https://www.osti.gov/biblio/495804}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jul 01 00:00:00 EDT 1997},
month = {Tue Jul 01 00:00:00 EDT 1997}
}

Conference:
Other availability
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