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Title: SLAC low emittance accelerator test facility

Abstract

SLAC is proposing to build a new Accelerator Test Facility (ATF) capable of producing a 50 MeV electron beam with an extremely low geometric tranverse emittance (1.5 x 10/sup -10/ rad.m) for the purpose of testing new methods of acceleration. The low emittance will be achieved by assembling a linear accelerator using one standard SLAC three-meter section and a 400 kV electron gun with a very small photocathode (40 microns in diameter). The photocathode will be illuminated from the back by short bursts (on the order of 6 ps) of visible laser light which will produce bunches of about 10/sup 5/ electrons. Higher currents could be obtained by illuminating the cathode from the front. The gun will be mounted directly against the accelerator section. Calculations show that in the absence of an rf buncher, injection of these 400 keV small radius electron bunches roughly 30/sup 0/ ahead of crest produces negligible transverse emittance growth due to radial rf forces. Acceleration of the electrons up to 50 MeV followed by collimation, energy slits and focusing will provide a 3.2 mm long waist of under 1.5 ..mu..m in diameter where laser acceleration and other techniques can be tested.

Authors:
; ;
Publication Date:
Research Org.:
Stanford Linear Accelerator Center, Menlo Park, CA (USA)
OSTI Identifier:
5456872
Report Number(s):
SLAC-PUB-3936; CONF-860629-31
ON: DE86013435; TRN: 86-026412
DOE Contract Number:  
AC03-76SF00515
Resource Type:
Conference
Resource Relation:
Conference: Linear accelerator conference, Stanford, CA, USA, 2 Jun 1986; Other Information: Portions of this document are illegible in microfiche products. Original copy available until stock is exhausted
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; ACCELERATOR FACILITIES; DESIGN; TEST FACILITIES; BEAM EMITTANCE; ELECTRON GUNS; LINEAR ACCELERATORS; PHOTOCATHODES; SHIELDING; ACCELERATORS; CATHODES; ELECTRODES; 430100* - Particle Accelerators- Design, Development, & Operation

Citation Formats

Loew, G A, Miller, R H, and Sinclair, C K. SLAC low emittance accelerator test facility. United States: N. p., 1986. Web.
Loew, G A, Miller, R H, & Sinclair, C K. SLAC low emittance accelerator test facility. United States.
Loew, G A, Miller, R H, and Sinclair, C K. 1986. "SLAC low emittance accelerator test facility". United States. https://www.osti.gov/servlets/purl/5456872.
@article{osti_5456872,
title = {SLAC low emittance accelerator test facility},
author = {Loew, G A and Miller, R H and Sinclair, C K},
abstractNote = {SLAC is proposing to build a new Accelerator Test Facility (ATF) capable of producing a 50 MeV electron beam with an extremely low geometric tranverse emittance (1.5 x 10/sup -10/ rad.m) for the purpose of testing new methods of acceleration. The low emittance will be achieved by assembling a linear accelerator using one standard SLAC three-meter section and a 400 kV electron gun with a very small photocathode (40 microns in diameter). The photocathode will be illuminated from the back by short bursts (on the order of 6 ps) of visible laser light which will produce bunches of about 10/sup 5/ electrons. Higher currents could be obtained by illuminating the cathode from the front. The gun will be mounted directly against the accelerator section. Calculations show that in the absence of an rf buncher, injection of these 400 keV small radius electron bunches roughly 30/sup 0/ ahead of crest produces negligible transverse emittance growth due to radial rf forces. Acceleration of the electrons up to 50 MeV followed by collimation, energy slits and focusing will provide a 3.2 mm long waist of under 1.5 ..mu..m in diameter where laser acceleration and other techniques can be tested.},
doi = {},
url = {https://www.osti.gov/biblio/5456872}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu May 01 00:00:00 EDT 1986},
month = {Thu May 01 00:00:00 EDT 1986}
}

Conference:
Other availability
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