Space-Charge Effects in a Gas Detector

[摘要] Discussion of space-charge effects in a photoluminescence cell that will be used as a nondisruptive total energy monitor at the LCLS facility is presented. Regimes where primary photoelectrons will be confined within the X-ray beam aperture are identified. Effects of the space-charge on the further evolution of the electron and ion populations are discussed. Parameters of the afterglow plasma are evaluated. Conditions under which the detector output will be proportional to the pulse energy are defined.

[发布日期] 2010-12-03

[学科分类] 核物理和高能物理

[关键词] AFTERGLOW;APERTURES;ELECTRONS;BEAM MONITORS;PHOTOLUMINESCENCE;SPACE CHARGE;LINEAR ACCELERATORS;LIGHT SOURCES;FREE ELECTRON LASERS;GASES;DETECTION XFEL