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Communication Dans Un Congrès Année : 2022

Neutron spectroscopy with N$_2$-filled high-pressure large-volume spherical proportional counters

S. Green
  • Fonction : Auteur
I. Katsioulas
  • Fonction : Auteur
P. Knights
  • Fonction : Auteur
I. Manthos
  • Fonction : Auteur
J. Matthews
  • Fonction : Auteur
T. Neep
  • Fonction : Auteur
K. Nikolopoulos
  • Fonction : Auteur
B. Phoenix
  • Fonction : Auteur
J. Sanders
  • Fonction : Auteur
R. Ward
  • Fonction : Auteur

Résumé

Precise in-situ measurements of the neutron flux in underground laboratories is crucial for direct dark matter searches, as neutron induced backgrounds can mimic the typical dark matter signal. The development of a novel neutron spectroscopy technique using Spherical Proportional Counters is investigated. The detector is operated with nitrogen and is sensitive to both fast and thermal neutrons through the $^{14}$N(n, $\alpha$)$^{11}$B and $^{14}$N(n, p)$^{14}$C reactions. This method holds potential to be a safe, inexpensive, effective, and reliable alternative to $^3$He-based detectors. Measurements of fast and thermal neutrons from an Am-Be source with a Spherical Proportional Counter operated at pressures up to 2 bar at Birmingham are discussed.

Dates et versions

hal-03287286 , version 1 (15-07-2021)

Identifiants

Citer

I. Giomataris, S. Green, I. Katsioulas, P. Knights, I. Manthos, et al.. Neutron spectroscopy with N$_2$-filled high-pressure large-volume spherical proportional counters. International Conference on Technology and Instrumentation in Particle Physics, May 2021, Online, United States. pp.012144, ⟨10.1088/1742-6596/2374/1/012144⟩. ⟨hal-03287286⟩
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