Investigation of the neutron-gamma ray discrimination performance at low neutron energy of a solution-grown stilbene scintillator

The results of experiments performed with a Ø25 x 25 mm solution-grown stilbene crystal in mono-energetic neutron fields in the 80-to-230 keV energy range are presented. The goal of the measurements, performed at the AMANDE facility, was to explore the capabilities of this organic scintillator to measure neutrons at the lowest possible energy with good pulse shape discrimination (PSD). The time of flight (TOF) technique was used in order to help with the neutron-gamma discrimination. The data are collected via a programmable digital acquisition (DAQ) system CAEN DT7530 using the software CoMPASS with the charge comparison method (CCM). The data are analysed using post-processing codes developed in the ROOT environment. The results show that the stilbene detector has discrimination capabilities for energies as low as 80 keV.

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Solar Flare Energetic Neutral Emission Measurements in the Project Coronas-I

International Astronomical Union Colloquium ◽

10.1017/s0252921100026208 ◽

1994 ◽

Vol 144 ◽

pp. 635-639

Author(s):

J. Baláž ◽

A. V. Dmitriev ◽

M. A. Kovalevskaya ◽

K. Kudela ◽

S. N. Kuznetsov ◽

...

Keyword(s):

Solar Flare ◽

Energy Range ◽

Gamma Rays ◽

Pulse Shape ◽

Gamma Ray ◽

Pulse Shape Discrimination ◽

Shape Discrimination ◽

Solar Neutron ◽

Low Altitude

AbstractThe experiment SONG (SOlar Neutron and Gamma rays) for the low altitude satellite CORONAS-I is described. The instrument is capable to provide gamma-ray line and continuum detection in the energy range 0.1 – 100 MeV as well as detection of neutrons with energies above 30 MeV. As a by-product, the electrons in the range 11 – 108 MeV will be measured too. The pulse shape discrimination technique (PSD) is used.

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EJ-309 pulse shape discrimination performance with a high gamma-ray-to-neutron ratio and low threshold

Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment ◽

10.1016/j.nima.2013.07.081 ◽

2013 ◽

Vol 729 ◽

pp. 463-468 ◽

Cited By ~ 19

Author(s):

A.C. Kaplan ◽

M. Flaska ◽

A. Enqvist ◽

J.L. Dolan ◽

S.A. Pozzi

Keyword(s):

Pulse Shape ◽

Gamma Ray ◽

Discrimination Performance ◽

Pulse Shape Discrimination ◽

Shape Discrimination ◽

High Gamma ◽

Low Threshold

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Characterization of New-Generation Silicon Photomultipliers for Nuclear Security Applications

EPJ Web of Conferences ◽

10.1051/epjconf/201817007015 ◽

2018 ◽

Vol 170 ◽

pp. 07015 ◽

Cited By ~ 2

Author(s):

Marc A. Wonders ◽

David L. Chichester ◽

Marek Flaska

Keyword(s):

Pulse Shape ◽

Gamma Ray ◽

Discrimination Performance ◽

Pulse Shape Discrimination ◽

Nuclear Safeguards ◽

Shape Discrimination ◽

Silicon Photomultipliers ◽

Security Applications ◽

Nuclear Security ◽

New Generation

Silicon photomultipliers have received a great deal of interest recently for use in applications spanning a wide variety of fields, including nuclear safeguards and nonproliferation. For nuclear-related applications, the ability of silicon photomultipliers to discriminate neutrons from gamma rays using pulse shape discrimination when coupled with certain organic scintillators is a characteristic of utmost importance. This work reports on progress characterizing the performance of twenty different silicon photomultipliers from five manufacturers with an emphasis on pulse shape discrimination performance and timing. Results are presented on pulse shape discrimination performance as a function of overvoltage for 6-mm x 6-mm silicon photomultipliers, and the time response to stilbene is characterized for silicon photomultipliers of three different sizes. Finally, comparison with a photomultiplier tube shows that some new-generation silicon photomultipliers can perform as well as photomultiplier tubes in neutron-gamma ray discrimination.

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