Design of an ultrathin cold neutron detector

Osovizky, A.; Pritchard, K.; Yehuda-Zada, Y.; Ziegler, J.; Binkley, Edward S.; Tsai, P.; Thompson, A. K.; Hadad, N.; Jackson, M. S.; Hurlbut, C.; Baltic, G.M.; Majkrzak, C. F.; Maliszewskyj, Nicholas C.

doi:10.1016/j.nima.2018.02.073

Cited by 13 publications

(8 citation statements)

References 21 publications

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“…The neutron is detected via the n-capture signal on 6 Li, n-capture reaction 6 Li(n, α)T produces alpha(α) and tritium(T) where the kinetic energy of the α particle is 2.05 MeV, the kinetic energy of T is 2.73 MeV. ZnS(Ag) scintillator matrix has a light yield of about 50,000 Photons/MeV [14], thus a large light output of 1.6 × 10 5 photons [15] is produces per n-capture signal in the ZnS(Ag) scintillator. ZnS(Ag) also exhibits Pulse Shape Discrimination (PSD) for additional rejection power.…”

Section: Designstudiesmentioning

confidence: 99%

A backing detector for order-keV neutrons

Biekert,

Chaplinsky,

Fink

et al. 2022

Preprint

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We have designed and tested a large-area (0.15 m 2 ) neutron detector based on neutron capture on 6 Li. The neutron detector design has been optimized for the purpose of tagging the scattering angle of keV-scale neutrons. These neutron detectors would be employed to calibrate the low-energy (<100 eV) nuclear recoil in detectors for dark matter and coherent elastic neutrino nucleus scattering (CEνNS). We describe the design, construction, and characterization of a prototype. The prototype is designed to have a tagging efficiency of ∼25% at the relevant O(keV) neutron energies, and with a mean capture time of ∼17 µs. The prototype was characterized using a 252 Cf neutron source and agreement with the simulation was observed within a few percent level.

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Section: Designstudiesmentioning

confidence: 99%

A backing detector for order-keV neutrons

Biekert,

Chaplinsky,

Fink

et al. 2022

Preprint

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“…Another advantage of ZnS:Ag is the clear difference in response to a neutron and a gamma which facilitates the Pulse Shape Discrimination (PSD) and makes identifying neutrons easier [17]. When an alpha particle hits a ZnS:Ag particle, typically up to 170,000 blue and UV photons are produced [14].…”

Section: Hardware Descriptionmentioning

confidence: 99%

BLOSM: Boron-based large-scale observation of soil moisture: First laboratory results of a cost-efficient neutron detector

et al. 2022

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“…1. More information can be found regarding the scintillator composition [13], [14], the design and optimization [15], [16], the SiPM [17], signal processing [18], service lifetime [19], and deadtime analysis [20].…”

Section: Introductionmentioning

confidence: 99%

Real-Time Signal Processing for Mitigating SiPM Dark Noise Effects in a Scintillating Neutron Detector

Pritchard

Chabot

Robucci

et al. 2021

IEEE Trans. Nucl. Sci.

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A 6 LiF:ZnS(Ag) based cold neutron detector with wavelength shifting (WLS) fibers and SiPM photodetector was developed at the NIST Center for Neutron Research. For neutron scattering applications at the NCNR, detector false positives severely diminish the quality of very faint neutron scatter patterns. Thermal noise generated by the SiPM significantly increases the likelihood of false positives by the detector/discriminator. This paper describes and evaluates a digital real-time algorithm implemented on a field programmable gate array (FPGA) which quickly differentiates SiPM thermal noise and noise pulse pile-up from neutron signals. The algorithm reduces deadtime spent on examining noise pulses as well as reduces the number of false positives.

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Design of an ultrathin cold neutron detector

Cited by 13 publications

References 21 publications

A backing detector for order-keV neutrons

A backing detector for order-keV neutrons

BLOSM: Boron-based large-scale observation of soil moisture: First laboratory results of a cost-efficient neutron detector

Real-Time Signal Processing for Mitigating SiPM Dark Noise Effects in a Scintillating Neutron Detector

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