Title :
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
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;
Conference_Titel :
Nuclear Science Symposium, 1997. IEEE
Conference_Location :
Albuquerque, NM
Print_ISBN :
0-7803-4258-5
DOI :
10.1109/NSSMIC.1997.672617
