Title :
Large Area Microchannel Plate Imaging Event Counting Detectors With Sub-Nanosecond Timing
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, Berkeley, CA, USA
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 (0.08 events cm-2s-1) and very stable gain behavior for at least 7 C cm-2 of charge extraction. Bialkali (Na2KSb) photocathodes with >20% quantum efficiency have also been made on 20 cm borofloat-33 windows compatible with a large sealed tube device.
Keywords :
microchannel plates; optical sensors; photocathodes; photodetectors; phototubes; scintillation counters; MCP; bialkali photocathodes; borofloat-33 windows compatible; borosilicate microcapillary arrays; charge extraction; counting detectors; large sealed tube device; low intrinsic background; microchannel plate imaging event; photon event; quantum efficiency; sealed tube optical detector; subnanosecond timing; time stamping; very stable gain behavior; Cathodes; Detectors; Electron tubes; Gallium nitride; Imaging; Microchannels; Substrates; Ionizing radiation sensors; photodetectors; radiation detectors; sensors;
Journal_Title :
Nuclear Science, IEEE Transactions on
DOI :
10.1109/TNS.2013.2252364
