A fast large-area position-sensitive time-of-flight neutron detection system

Abstract

The submitted manuscript has been authored by a contractor of the U. S. Government under contract No. W-31-109-ENG-38-Accordingly, the U. S. Government retains a nonexclusive, royalty-free license to publish or reproduce the published form of this contribution, or allow others to do so, for U. S. Government purposes.

7 Neutron Detectors

“…Actually, the source, the accelerator, is a part of the spectrometer. Several spectrometers of this type are reported [120][121][122][123][124][125][126][127], Firk [128] gives a review from the 1979 point of view. A collocation of properties for some time-of-flight accelerator systems is given in Fig.…”

“…Neutron scattering measurements can be done using a movable scatterer and fixed detector [132]. Another possibility is the use of position-sensitive detectors [127], Beam swingers [133,134,135] give a possibility of varying the angle of the beam and use a fixed neutron detection system. Large scintillators give high sensitivity but a bad flight length definition.…”

A fast neutron time-of-flight and scattering angle measuring system with online flight time correction

“…Thus, the measured flight times tf must be corrected by the value A t f , in order that the flight times recorded by different detectors can be compared directly [5].…”

“…,[5].0 The time channels are allocated to sequential channel numbers which are used as the address for the time axis of the two-dimensional histogram.0018-9499/94$04.00 0 1994 IEEE A time window sets the range of time-of-flights.…”

Experience with position-sensitive neutron detectors at the Intense Pulsed Neutron Source

“…This problem has now been fully understood and cured [14], so that the entire active length of the detectors can be routinely used.…”