Development of large area photon counting detectors optimized for Cherenkov light imaging with high temporal and sub-mm spatial resolution

Author

Siegmund, O.H.W. ; McPhate, J.B. ; Jelinsky, S.R. ; Vallerga, J.V. ; Tremsin, A.S. ; Hemphill, R. ; Frisch, H.J. ; Wagner, R.G. ; Elam, J. ; Mane, Anil

Author_Institution

Univ. of California, Berkeley, CA, USA

fYear

2011

fDate

23-29 Oct. 2011

Firstpage

2063

Lastpage

2070

Abstract

Progress towards the development of a 20 cm sealed tube optical detector with imaging and photon event time stamping is presented. Novel microchannel plates employing borosilicate micro-capillary arrays have been tested. These provide many performance characteristics typical of conventional MCPs, but have been made in sizes up to 20 cm, have low intrinsic background (0.085 events cm^-2 s^-1) and very stable gain behavior for at least 1 C cm^-2 of charge extraction. Bialkali (Na₂KSb) photocathodes with >; 20% quantum efficiency have also been made on borofloat-33 windows compatible with a 20 cm sealed tube device.

Keywords

Cherenkov counters; microchannel plates; photocathodes; photon counting; Bialkali photocathode; Cherenkov light imaging method; borosilicate microcapillary array; charge extraction process; high temporal resolution; large area photon counting detector; microchannel plate; photon event time stamping analysis; stable gain behavior; submm spatial resolution; tube optical detector;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC), 2011 IEEE

Conference_Location

Valencia

ISSN

1082-3654

Print_ISBN

978-1-4673-0118-3

Type

conf

DOI

10.1109/NSSMIC.2011.6154420

Filename

6154420