Published December 1, 2001 | Version v1
Report Metadata-only

Jefferson Lab IR demo FEL photocathode quantum efficiency scanner

Creators

Description

Jefferson Laboratory's Free Electron Laser (FEL) incorporates a cesiated gallium arsenide (GaAs) DC photocathode gun as its electron source. By using a set of scanning mirrors, the surface of the GaAs wafer is illuminated with a 543.5nm helium-neon laser. Measuring the current flow across the biased photocathode generates a quantum efficiency (QE) map of the 1-in. diameter wafer surface. The resulting QE map provides a very detailed picture of the efficiency of thewafer surface. By generating a QE map in a matter of minutes, the photocathode scanner has proven to be an exceptional tool in quickly determining sensitivityand availability of the photocathode for operation.

Additional details

Identifiers

URL
https://www.sciencedirect.com/science/article/pii/S0168900201016953;

Publishing Information

Imprint Pagination
vp.
Report number
JLAB-ACC--01-47

Conference

Title
22. International Free Electron Laser Conference; 7. FEL Users Workshop
Dates
13-18 Aug 2000
Place
Durham, NC (United States)

INIS

Country of Publication
United States
Country of Input or Organization
United States
INIS RN
41097219
Subject category
S43: PARTICLE ACCELERATORS;
Resource subtype / Literary indicator
Conference, Non-conventional Literature
Descriptors DEI
CEBAF ACCELERATOR; ELECTRON SOURCES; FREE ELECTRON LASERS; GALLIUM ARSENIDES; HELIUM-NEON LASERS; PHOTOCATHODES; QUANTUM EFFICIENCY
Descriptors DEC
ACCELERATORS; ARSENIC COMPOUNDS; ARSENIDES; CATHODES; EFFICIENCY; ELECTRODES; GALLIUM COMPOUNDS; GAS LASERS; LASERS; LINEAR ACCELERATORS; PARTICLE SOURCES; PNICTIDES; RADIATION SOURCES

Optional Information

Contract/Grant/Project number
AC05-84ER40150
Funding organization
US Department of Energy (United States)