Extended Bonner sphere spectrometer for dynamic neutron spectrum on HL-2A

Jiang, C. H; Cao, Jing; Liu, Zihao; Jiang, Xiaofei; Xianming, Song; Zhang, Yipo; Yin, Zhen‐Qiang

doi:10.1088/2058-6272/aa667a

Cited by 3 publications

(1 citation statement)

References 13 publications

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“…The Bonner sphere spectrometer (BSS) has been widely used to measure the neutron spectrum due to the advantages of simple electronics and operation, wide detection energy range, isotropic angular response and reliable photon discrimination [3][4][5][6]. The polyethylene-only Bonner spheres used in conventional BSS systems respond well in the energy range from thermal to 20 MeV, above which the response functions drop sharply.…”

Section: Introductionmentioning

confidence: 99%

Calibration and validation measurements of the Extended-range Bonner sphere spectrometer

Gong,

Wen,

Luo

et al. 2024

J. Inst.

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An Extended-range Bonner sphere spectrometer (EBSS) has been developed to investigate the neutron spectra of the China initiative Accelerator Driven System. This paper presents the design, calibration, and validation measurements of the EBSS system using a standard 241Am-Be neutron source and the cosmic ray neutrons. The EBSS system was simulated using the PHITS code, and the geometric structures were designed using the response functions obtained by simulations. The EBSS system comprises of seven polyethylene-only spheres and seven extended-range spheres encased in lead, copper, or tungsten shells along with a bare 3He proportional counter. To verify the accuracy of the simulated response functions, the EBSS system was calibrated with monoenergetic neutron beams of 565 keV at the China Institute of Atomic Energy in Beijing. The EBSS system was used to measure neutron count rates of the 241Am-Be neutron source and cosmic ray neutrons. Subsequently, the measured neutron count rates were converted into neutron spectra by the unfolding software. Experimental findings demonstrate the precise capability of the EBSS system to measure neutron spectra across a wide range of neutron radiation fields.

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Section: Introductionmentioning

confidence: 99%

Calibration and validation measurements of the Extended-range Bonner sphere spectrometer

Gong,

Wen,

Luo

et al. 2024

J. Inst.

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Development of an Extended-Range Bonner Sphere Spectrometer for China Initiative Accelerator-Driven System

Wen

Sang-Hwa

et al. 2022

Radiation Protection Dosimetry

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To measure the extended-range neutron spectra and calibrate the extended-range neutron dosemeters of the China initiative Accelerator-Driven System (CiADS), an Extended-range Bonner Sphere Spectrometer (EBSS) has been developed. The EBSS was designed based on the PHITS codes, investigating various combinations of materials and diameters of the neutron moderators and the neutron multipliers for extended-range neutrons. Finally, seven polyethylene-only spheres and seven extended-range spheres were selected and subsequently built. The neutron multipliers of the extended-range spheres embedded concentric shells of lead, copper and tungsten. The response functions of the EBSS were analyzed and experimentally validated. It was subsequently tested with 252Cf neutron source and cosmic ray neutron source. The results demonstrate that the EBSS is capable of accurately measuring neutron spectra.

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Performance of the HL-2A Bonner sphere spectrometer in monoenergetic neutron fields from 100 keV to 1 MeV

Zheng

Jiang

Liu

et al. 2021

2021 IEEE 5th Advanced Information Technology, Electronic and Automation Control Conference (IAEAC)

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Extended Bonner sphere spectrometer for dynamic neutron spectrum on HL-2A

Cited by 3 publications

References 13 publications

Calibration and validation measurements of the Extended-range Bonner sphere spectrometer

Calibration and validation measurements of the Extended-range Bonner sphere spectrometer

Development of an Extended-Range Bonner Sphere Spectrometer for China Initiative Accelerator-Driven System

Performance of the HL-2A Bonner sphere spectrometer in monoenergetic neutron fields from 100 keV to 1 MeV

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