Source test of the prototype neutron detector for the large-acceptance multipurpose spectrometer at RAON

Kisoo Lee; Kyong Sei Lee; Benard Mulilo; Byungsik Hong

doi:10.3938/jkps.62.1227

Source test of the prototype neutron detector for the large-acceptance multipurpose spectrometer at RAON

Kisoo Lee, Kyong Sei Lee, Benard Mulilo, Byungsik Hong

Department of Physics

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

A neutron detector array will be essential for the study of the nuclear symmetry energy in the large-acceptance multipurpose spectrometer (LAMPS) at the planned rare-isotope beam facility RAON in Korea. We have built the prototype neutron detector for LAMPS and examined its performance by using radiation sources. For data taking, we tested the voltage-threshold discriminator (VTD) and the constant-fraction discriminator (CFD) modules for the pulse process. The intrinsic time resolution of the prototype detector is estimated to be 723 ps for VTD and 488 ps for CFD. The fission neutrons and gammas emitted from ²⁵²Cf can be clearly separated in the time distribution. We reconstruct the energy spectrum of the spontaneous fission neutrons from ²⁵²Cf, which can be described well by using the empirical Watt spectrum.

Original language	English
Pages (from-to)	1227-1232
Number of pages	6
Journal	Journal of the Korean Physical Society
Volume	62
Issue number	9
DOIs	https://doi.org/10.3938/jkps.62.1227
Publication status	Published - 2013 May

Bibliographical note

Funding Information:
We acknowledge support from the Rare-isotope Science Project (RISP) of the Institute for Basic Science (IBS). This work was supported by the National Research Foundation of Korea (Grants No. NRF-2012M7A1A1A00009 and NRF-2012M7A1A2055596).

Keywords

Constant-fraction discriminator
Heavy-ion collision
LAMPS
Neutron detector
Nuclear symmetry energy
RAON
Voltage-threshold discriminator

ASJC Scopus subject areas

General Physics and Astronomy

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10.3938/jkps.62.1227

Cite this

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title = "Source test of the prototype neutron detector for the large-acceptance multipurpose spectrometer at RAON",

abstract = "A neutron detector array will be essential for the study of the nuclear symmetry energy in the large-acceptance multipurpose spectrometer (LAMPS) at the planned rare-isotope beam facility RAON in Korea. We have built the prototype neutron detector for LAMPS and examined its performance by using radiation sources. For data taking, we tested the voltage-threshold discriminator (VTD) and the constant-fraction discriminator (CFD) modules for the pulse process. The intrinsic time resolution of the prototype detector is estimated to be 723 ps for VTD and 488 ps for CFD. The fission neutrons and gammas emitted from 252Cf can be clearly separated in the time distribution. We reconstruct the energy spectrum of the spontaneous fission neutrons from 252Cf, which can be described well by using the empirical Watt spectrum.",

keywords = "Constant-fraction discriminator, Heavy-ion collision, LAMPS, Neutron detector, Nuclear symmetry energy, RAON, Voltage-threshold discriminator",

author = "Kisoo Lee and Lee, {Kyong Sei} and Benard Mulilo and Byungsik Hong",

note = "Funding Information: We acknowledge support from the Rare-isotope Science Project (RISP) of the Institute for Basic Science (IBS). This work was supported by the National Research Foundation of Korea (Grants No. NRF-2012M7A1A1A00009 and NRF-2012M7A1A2055596).",

year = "2013",

month = may,

doi = "10.3938/jkps.62.1227",

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AU - Lee, Kisoo

AU - Lee, Kyong Sei

AU - Mulilo, Benard

AU - Hong, Byungsik

N1 - Funding Information: We acknowledge support from the Rare-isotope Science Project (RISP) of the Institute for Basic Science (IBS). This work was supported by the National Research Foundation of Korea (Grants No. NRF-2012M7A1A1A00009 and NRF-2012M7A1A2055596).

PY - 2013/5

Y1 - 2013/5

N2 - A neutron detector array will be essential for the study of the nuclear symmetry energy in the large-acceptance multipurpose spectrometer (LAMPS) at the planned rare-isotope beam facility RAON in Korea. We have built the prototype neutron detector for LAMPS and examined its performance by using radiation sources. For data taking, we tested the voltage-threshold discriminator (VTD) and the constant-fraction discriminator (CFD) modules for the pulse process. The intrinsic time resolution of the prototype detector is estimated to be 723 ps for VTD and 488 ps for CFD. The fission neutrons and gammas emitted from 252Cf can be clearly separated in the time distribution. We reconstruct the energy spectrum of the spontaneous fission neutrons from 252Cf, which can be described well by using the empirical Watt spectrum.

AB - A neutron detector array will be essential for the study of the nuclear symmetry energy in the large-acceptance multipurpose spectrometer (LAMPS) at the planned rare-isotope beam facility RAON in Korea. We have built the prototype neutron detector for LAMPS and examined its performance by using radiation sources. For data taking, we tested the voltage-threshold discriminator (VTD) and the constant-fraction discriminator (CFD) modules for the pulse process. The intrinsic time resolution of the prototype detector is estimated to be 723 ps for VTD and 488 ps for CFD. The fission neutrons and gammas emitted from 252Cf can be clearly separated in the time distribution. We reconstruct the energy spectrum of the spontaneous fission neutrons from 252Cf, which can be described well by using the empirical Watt spectrum.

KW - Constant-fraction discriminator

KW - Heavy-ion collision

KW - LAMPS

KW - Neutron detector

KW - Nuclear symmetry energy

KW - RAON

KW - Voltage-threshold discriminator

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Source test of the prototype neutron detector for the large-acceptance multipurpose spectrometer at RAON

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

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