A columnar cesium iodide (CsI) drift plane layer for gas avalanche microdetectors

Author

Cho, H.S. ; Hong, W.S. ; Perez-Mendez, V. ; Kadyk, J. ; Palaio, N. ; Vujic, J.

Author_Institution

Dept. of Nucl. Eng., California Univ., Berkeley, CA, USA

fYear

1997

fDate

9-15 Nov 1997

Firstpage

430

Abstract

A new method is proposed to improve the spatial and time resolutions, and the detection efficiency with respect to the angle of the incident particles, for gas avalanche microdetectors. The new technique uses a thin (~200 μm) columnar CsI layer at the drift plane that acts as an efficient source of electrons produced by secondary emission due to the incident particles, and as an electron multiplier. In this paper, we present the measurements of the electron multiplication factor and detection efficiency of this layer, using a ⁹⁰Sr β-source

Keywords

beta-ray detection; electron detection; position sensitive particle detectors; solid scintillation detectors; ⁹⁰Sr β-source; CsI; CsI drift plane layer; Sr; columnar CsI layer; detection efficiency; electron multiplication factor; electron multiplier; gas avalanche microdetectors; secondary emission; spatial resolution; time resolution; Biomedical imaging; Breakdown voltage; Detectors; Electron emission; Electron multipliers; Laboratories; Particle tracking; Scanning electron microscopy; Spatial resolution; Stability;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium, 1997. IEEE

Conference_Location

Albuquerque, NM

ISSN

1082-3654

Print_ISBN

0-7803-4258-5

Type

conf

DOI

10.1109/NSSMIC.1997.672617

Filename

672617