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Title: The progress of funnelling gun high voltage condition and beam test

A prototype of a high average current polarized electron funneling gun as an eRHIC injector has been built at BNL. The gun was assembled and tested at Stangenes Incorporated. Two beams were generated from two GaAs photocathodes and combined by a switched combiner field. We observed the combined beams on a YAG crystal and measured the photocurrent by a Faraday cup. The gun has been shipped to Stony Brook University and is being tested there. In this paper we will describe the major components of the gun and recent beam test results. High voltage conditioning is discussed as well.
Authors:
 [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [2] ;  [2] ;  [3] ;  [3] ;  [3] ;  [3]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States)
  2. Transfer Engineering and Manufacturing, Inc., Fremont, CA (United States)
  3. Thompson, Stangenes Industries, Palo Alto, CA (United States)
Publication Date:
OSTI Identifier:
1188240
Report Number(s):
BNL--107293-2015-CP
R&D Project: KBCH139; KB0202011; TRN: US1500247
DOE Contract Number:
SC00112704
Resource Type:
Conference
Resource Relation:
Conference: 6th International Particle Accelerator Conference (IPAC’15), Richmond, VA (United States), 3-8 May 2015
Research Org:
Brookhaven National Laboratory (BNL), Upton, NY (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; ELECTRON GUNS; ELECTRON BEAMS; BROOKHAVEN RHIC; ELECTRIC POTENTIAL; GALLIUM ARSENIDES; NEODYMIUM LASERS; POLARIZED BEAMS; BEAM INJECTION; PHOTOCATHODES; PHOTOCURRENTS; TESTING