Space-Charge Effects in a Gas Detector

Ryutov, D.D.

SLAC National Accelerator Laboratory

关键词: Space Charge;    Light Sources;    Apertures;    43 Particle Accelerators;    Afterglow;   

DOI  :  10.2172/993724
RP-ID  :  SLAC-TN-10-043
RP-ID  :  AC02-76SF00515
RP-ID  :  993724

美国|英语

来源: UNT Digital Library

【 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.