An optimization method of position resolution for gaseous thermal neutron detection based on time information

He, Z.Y.; He, Shizheng; Wu, Hui-Yin; Xu, Rui; Hu, Bitao; Zhang, Y.; Hong-jun, Yang

doi:10.1088/1748-0221/16/08/p08020

Cited by 2 publications

(2 citation statements)

References 24 publications

(48 reference statements)

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“…For effective measurement of CE reactions, the energy dynamic range and size of the detector were determined through the calculation and simulation firstly. The TPC was chosen as our E detector, because the TPC is widely used in nuclear and particle physics experiments, allowing for the reconstruction of the charged particle's three-dimensional track and measure of the deposited energy precisely [15][16][17][18][19][20][21][22]. Our scTPC is based on the thick gas electron multiplier (THGEM) due to its advantages, such as durability, affordability, and versatility in terms of shape and size [23][24][25][26][27].…”

Section: Design and Setup Of Sctpcmentioning

confidence: 99%

Development of a semi-cylindrical time projection chamber prototype for ($$^{3}{\textrm{He}},t$$) charge exchange reaction experiment

He,

Li,

et al. 2023

Eur. Phys. J. C

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The charge exchange (CE) reaction is an effective probe to study the structure of atomic nuclei in the isospin dimension, which has been studied for decades. To expand the range of nuclei studied by CE reactions to a wider range and research the structure characteristics of unstable nuclei, including the isospin symmetry, spin-isospin excitation, and nuclear symmetry energy, a semi-cylindrical time projection chamber (scTPC) prototype was designed and constructed to probe ($$^{\textrm{3}}$$ 3 He,t) CE reactions in inverse kinematics. The 266 nm UV laser was used to achieve electron-drift-velocity calibration. The scTPC has an energy resolution (FWHM) of 5.6% for $$\alpha $$ α particles emitted by $$^{\textrm{241}}$$ 241 Am radioactive source. The position resolution of scTPC is described by the residual method. The spatial resolution on the pad plane is 409 $$\upmu $$ μ m. And the position resolution in the drift direction is 326 $$\upmu $$ μ m, equivalent to an angular resolution of 0.4$$^\circ $$ ∘ . These performances suggest that the scTPC can measure $$\Delta E $$ Δ E and particle tracks precisely. The successful development of the scTPC prototype provides better conditions for the next step of experimental data analysis and processing.

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Section: Design and Setup Of Sctpcmentioning

confidence: 99%

Development of a semi-cylindrical time projection chamber prototype for ($$^{3}{\textrm{He}},t$$) charge exchange reaction experiment

He,

Li,

et al. 2023

Eur. Phys. J. C

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“…In recent years, the µTPC method for finding the starting point of the ion track was proposed to achieve hundreds of microns in spatial resolution. [21,22] However, it requires complex electronic systems and algorithms, as well as a large bandwidth of data. It is not suitable for the detector with high counting rate at high-flux neutron source.…”

Section: Introductionmentioning

confidence: 99%

A stopping layer concept to improve the spatial resolution of gas-electron-multiplier neutron detector

Zhou¹,

Zhou²,

Zhou³

et al. 2022

Chinese Phys. B

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In recent years, Gas Electron Multiplier (GEM) neutron detector has been developing towards high spatial resolution and high dynamic counting range. A novel concept of the Al stopping layer was proposed to enable the detector to achieve sub-millimeter (sub-mm) spatial resolution. The neutron conversion layer was coated with the Al stopping layer to limit the emission angle of ions into the drift region. The short track projection of ions was obtained on the signal readout board, and the detector would get good spatial resolution. The spatial resolutions of the GEM neutron detector with Al stopping layer were simulated and optimized based on Geant4GarfieldInterface. When Al stopping layer was 3.0 μm thick, drift region was 2 mm thick, strip pitch was 600 μm, and digital readout was employed. The spatial resolution of the detector was 0.76 mm, and the thermal neutron detection efficiency was about 0.01%. Thus, the GEM neutron detector with a simple detector structure and a fast readout mode was developed to obtain a high spatial resolution and high dynamic counting range. It could be used for the direct measurement of a high-flux neutron beam, such as Bragg transmission imaging, very small-angle scattering neutron detection and neutron beam diagnostic.

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An optimization method of position resolution for gaseous thermal neutron detection based on time information

Cited by 2 publications

References 24 publications

Development of a semi-cylindrical time projection chamber prototype for ($$^{3}{\textrm{He}},t$$) charge exchange reaction experiment

Development of a semi-cylindrical time projection chamber prototype for ($$^{3}{\textrm{He}},t$$) charge exchange reaction experiment

A stopping layer concept to improve the spatial resolution of gas-electron-multiplier neutron detector

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