First operation of cesium telluride photocathodes in the TTF injector RF gun

Citation
D. Sertore et al., First operation of cesium telluride photocathodes in the TTF injector RF gun, NUCL INST A, 445(1-3), 2000, pp. 422-426
Citations number
13
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences","Instrumentation & Measurement
Journal title
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
ISSN journal
0168-9002 → ACNP
Volume
445
Issue
1-3
Year of publication
2000
Pages
422 - 426
Database
ISI
SICI code
0168-9002(20000501)445:1-3<422:FOOCTP>2.0.ZU;2-O
Abstract
During the run 1998/1999 a new injector based on a laser-driven RF gun was brought in operation at the TESLA Test Facility (TTF) linac at DESY, in ord er to produce the beam structure and quality required either by TeV collide r and SASE FEL experiments. High quantum efficiency cesium telluride photoc athodes, prepared at Milano and transferred to DESY, have been successfully operated in the RF gun. A bunch charge of 50 nC, only limited by space cha rge effects, was achieved. The photocathodes have shown an operative lifeti me of several months. A new cathode surface finishing has showed a promisin g decrease of the photocathode dark current. Measurements of dark current, quantum efficiency and lifetime are reported. (C) 2000 Elsevier Science B.V . All rights reserved.