Abstract
A new high-precision detector for studying neutrons from beta-delayed neutron emission and direct reaction studies is proposed. The Neutron dEtector with multi-neutron (denoted Xn) Tracking (NEXT) array is designed to maintain high intrinsic neutron detection efficiency while reducing uncertainties in neutron energy measurements. A single NEXT module is composed of thin segments of plastic scintillator, each optically separated, capable of neutron-gamma discrimination. Each segmented module is coupled to position sensitive photodetectors enabling the high-precision determination of neutron time of arrival and interaction position within the active volume. A design study has been conducted based on simulations and experimental tests leading to the construction of prototype units. First results from measurements using a 252Cf neutron source and accelerator-produced monoenergetic neutrons are presented.
Original language | English |
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Article number | 162528 |
Journal | Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment |
Volume | 946 |
DOIs | |
State | Published - Dec 1 2019 |
Bibliographical note
Publisher Copyright:© 2019 Elsevier B.V.
Keywords
- Beta-delayed neutron emission
- Direct reactions
- Neutron detection
- Pulse shape discrimination
- Time of flight
ASJC Scopus subject areas
- Nuclear and High Energy Physics
- Instrumentation