1201.2559 (Sven Schössler et al.)

Time and position sensitive single photon detector for scintillator
read-out    [PDF]

Sven Schössler, Benjamin Bromberger, Michal Brandis, Lothar Ph. H. Schmidt, Kai Tittelmeier, Achim Czasch, Volker Dangendorf, Ottmar Jagutzki

We have developed a photon counting detector system for combined neutron and
gamma radiography which can determine position, time and intensity of a
secondary photon flash created by a high-energy particle or photon within a
scintillator screen. The system is based on a micro-channel plate
photomultiplier concept utilizing image charge coupling to a position- and
time-sensitive read-out anode placed outside the vacuum tube in air, aided by a
standard photomultiplier and very fast pulse-height analyzing electronics. Due
to the low dead time of all system components it can cope with the high
throughput demands of a proposed combined fast neutron and dual discrete energy
gamma radiography method (FNDDER). We show tests with different types of
delay-line read-out anodes and present a novel pulse-height-to-time converter
circuit with its potential to discriminate gamma energies for the projected
FNDDER devices for an automated cargo container inspection system (ACCIS).

View original: http://arxiv.org/abs/1201.2559