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Title: ROLE OF DIAMOND SECONDARY EMITTERS IN HIGH BRIGHTNESS ELECTRON SOURCES.

Abstract

In this paper we explore the possibility of using diamond secondary emitter in a high average current electron injector to amplify the current from the photocathode and to isolate the cathode and the injector from each other to increase the life time of the cathode and preserve the performance of the injector. Secondary electron yield of 225 and current density of 0.8 a/cm{sup 2} have been measured in the transmission mode from type 2 a natural diamond. Although the diamond will be heated during normal operation in the injector, calculations indicate that by cryogenically cooling the diamond, the temperature gradient along the diamond can be maintained within the acceptable range. The electron energy and temporal distributions are expected to be narrow from this device resulting in high brightness beams. Plans are underway to measure the SEY in emission mode, fabricate photocathode-diamond capsule and test diamond and capsule in superconducting RF injector.

Authors:
; ; ; ; ; ; ;
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
DOE/SC
OSTI Identifier:
15020323
Report Number(s):
BNL-74975-2005-CP
R&D Project: LS-02; KA-04-03; TRN: US0504169
DOE Contract Number:  
DE-AC02-98CH10886
Resource Type:
Conference
Resource Relation:
Conference: 1ST INTERNATIONAL INDUSTRIAL DIAMOND CONFERENCE; BARCELONA, SPAIN; 20051020 through 20051021
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; BRIGHTNESS; CATHODES; CURRENT DENSITY; DIAMONDS; ELECTRON SOURCES; PERFORMANCE; PHOTOCATHODES; ELECTRON BEAM INJECTION; SECONDARY EMISSION

Citation Formats

RAO, T, BEN-ZVI, I, BURRILL, A, CHANG, X, GRIMES, J, RANK, J, SEGALOV, Z, and SMEDLEY, J. ROLE OF DIAMOND SECONDARY EMITTERS IN HIGH BRIGHTNESS ELECTRON SOURCES.. United States: N. p., 2005. Web.
RAO, T, BEN-ZVI, I, BURRILL, A, CHANG, X, GRIMES, J, RANK, J, SEGALOV, Z, & SMEDLEY, J. ROLE OF DIAMOND SECONDARY EMITTERS IN HIGH BRIGHTNESS ELECTRON SOURCES.. United States.
RAO, T, BEN-ZVI, I, BURRILL, A, CHANG, X, GRIMES, J, RANK, J, SEGALOV, Z, and SMEDLEY, J. Tue . "ROLE OF DIAMOND SECONDARY EMITTERS IN HIGH BRIGHTNESS ELECTRON SOURCES.". United States. https://www.osti.gov/servlets/purl/15020323.
@article{osti_15020323,
title = {ROLE OF DIAMOND SECONDARY EMITTERS IN HIGH BRIGHTNESS ELECTRON SOURCES.},
author = {RAO, T and BEN-ZVI, I and BURRILL, A and CHANG, X and GRIMES, J and RANK, J and SEGALOV, Z and SMEDLEY, J},
abstractNote = {In this paper we explore the possibility of using diamond secondary emitter in a high average current electron injector to amplify the current from the photocathode and to isolate the cathode and the injector from each other to increase the life time of the cathode and preserve the performance of the injector. Secondary electron yield of 225 and current density of 0.8 a/cm{sup 2} have been measured in the transmission mode from type 2 a natural diamond. Although the diamond will be heated during normal operation in the injector, calculations indicate that by cryogenically cooling the diamond, the temperature gradient along the diamond can be maintained within the acceptable range. The electron energy and temporal distributions are expected to be narrow from this device resulting in high brightness beams. Plans are underway to measure the SEY in emission mode, fabricate photocathode-diamond capsule and test diamond and capsule in superconducting RF injector.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2005},
month = {9}
}

Conference:
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