JACoW logo

Journals of Accelerator Conferences Website (JACoW)

JACoW is a publisher in Geneva, Switzerland that publishes the proceedings of accelerator conferences held around the world by an international collaboration of editors.


RIS citation export for WEPA13: New Results at JLab Describing Operating Lifetime of GaAs Photo-guns

TY  - CONF
AU  - Bruker, M.W.
AU  - Grames, J.M.
AU  - Hernandez-Garcia, C.
AU  - Lizárraga-Rubio, V.M.
AU  - Poelker, M.
AU  - Valerio-Lizárraga, C.A.
AU  - Yoskowitz, J.T.
AU  - Zhang, S.
ED  - Biedron, Sandra
ED  - Simakov, Evgenya
ED  - Milton, Stephen
ED  - Anisimov, Petr M.
ED  - Schaa, Volker R.W.
TI  - New Results at JLab Describing Operating Lifetime of GaAs Photo-guns
J2  - Proc. of NAPAC2022, Albuquerque, NM, USA, 07-12 August 2022
CY  - Albuquerque, NM, USA
T2  - International Particle Accelerator Conference
T3  - 5
LA  - english
AB  - Polarized electrons from GaAs photocathodes have been key to some of the highest-impact results of the Jefferson Lab science program over the past 30 years. During this time, various studies have given insight into improving the operational lifetime of these photocathodes in DC high-voltage photo-guns while using lasers with spatial Gaussian profiles of typically 0.5 mm to 1 mm FWHM, cathode voltages of 100 kV to 130 kV, and a wide range of beam currents up to multiple mA. In this contribution, we show recent experimental data from a 100 kV to 180 kV setup and describe our progress at predicting the lifetime based on the calculable dynamics of ionized gas molecules inside the gun. These new experimental studies at Jefferson Lab are specifically aimed at exploring the ion damage of higher-voltage guns being built for injectors.
PB  - JACoW Publishing
CP  - Geneva, Switzerland
SP  - 644
EP  - 647
KW  - gun
KW  - cathode
KW  - electron
KW  - laser
KW  - experiment
DA  - 2022/10
PY  - 2022
SN  - 2673-7000
SN  - 978-3-95450-232-5
DO  - doi:10.18429/JACoW-NAPAC2022-WEPA13
UR  - https://jacow.org/napac2022/papers/wepa13.pdf
ER  -