Published 1997 | Version v1
Report Restricted

Experimental results from a DC photocathode electron gun for an IR FEL

Creators

Description

A 350 keV DC photocathode gun capable of delivering the high-brightness CW electron beam necessary for Jefferson Lab's infrared free-electron laser is described. The gun is to be used with a superconducting radiofrequency linac operating at 1.497 GHz and is mode-locked to the 40th subharmonic of the fundamental using a Nd:YLF drive laser. The gun provides 20--25 ps bunches at up to 135 pC/bunch. Experimental measurements of transverse and longitudinal beam properties are presented. Transverse emittance is measured using a slit-wire scanner emittance meter, and energy spread is measured using the slit and a spectrometer magnet. Longitudinal emittance is measured using a combination of sampling aperture, kicker cavity, slit and spectrometer. Measurements for bunch charges of 135 pC are described and compared with simulations

Availability note (English)

Available from INIS in electronic form; ALSO AVAILABLE FROM ALSO AVAILABLE FROM OSTI AS DE98000365; NTIS; US GOVT. PRINTING OFFICE DEP.

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Additional details

Publishing Information

Imprint Pagination
3 p.
Report number
DOE/ER/40150--1174

Conference

Title
international free electron laser conference; 4. free electron laser users' workshop
Acronym
FEL '97
Dates
18-22 Aug 1997
Place
Beijing (China)

INIS

Country of Publication
United States
Country of Input or Organization
United States
INIS RN
30001846
Subject category
S43: PARTICLE ACCELERATORS;
Resource subtype / Literary indicator
Conference
Descriptors DEI
BEAM EMITTANCE; BEAM MONITORING; BEAM PROFILES; ELECTRON GUNS; FREE ELECTRON LASERS; INFRARED RADIATION; LINEAR ACCELERATORS; PHASE SPACE
Descriptors DEC
ACCELERATORS; AMPLIFIERS; ELECTROMAGNETIC RADIATION; EQUIPMENT; LASERS; MATHEMATICAL SPACE; MONITORING; RADIATIONS; SPACE

Optional Information

Contract/Grant/Project number
Contract AC05-84ER40150
Funding organization
USDOE Office of Energy Research, Washington, DC (United States); Office of Naval Research, Washington, DC (United States)
Secondary number(s)
JLAB-ACP--97-09; CONF-970885--