Two-dimensional solid state gaseous detector based on 10B layer for thermal and cold neutrons

International Conference on Particle Physics and Astrophysics

物理学;天文学

Potashev, S.^1 ; Burmistrov, Yu^1 ; Drachev, A.^1 ; Karaevsky, S.^1 ; Konobeevski, E.^1 ; Zuyev, S.^1

Institute for Nuclear Research, Russian Academy of Sciences, 60-letiya Oktyabrya prospekt 7a, Moscow

117312, Russia^1

关键词: Background detection;    Detector efficiency;    Gaseous detectors;    Neutron converters;    Neutron wavelengths;    Nuclear research;    Spatial resolution;    Thermal neutrons;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/798/1/012160/pdf
DOI  :  10.1088/1742-6596/798/1/012160

学科分类：天文学(综合)

来源: IOP

【 摘 要 】

Two-dimensional solid state gaseous detector for thermal and cold neutrons is created. The detector has active area of 128 x 128 mm2,10B neutron converter, and gas chamber with thin windows. The resistive charge-division readout is applied to determine the neutron position. The detector was tested using W-Be photoneutron source at the Institute for Nuclear Research, Moscow. The detector efficiency is estimated as ∼4% at neutron wavelength λ = 1.82 Å and 8% at λ = 8 Å. The efficiency of the background detection was less than 10-5of that for thermal neutrons. The resulting pulse height resolution and the spatial resolution are estimated as ∼15% and ∼2.5 mm, respectively.