CLLBC High Temperature Scintillation Characterization and Detector Integration

Nathaniel Kaneshige; Lakshmi Soundara Pandian; Kyle Werra; Josh Tower; Jarek Glodo; Erik Johnson; Michael P. Dion; Irakli Garishvili; Greg Westphal; Louise G. Worrall; Michael R. Squillante; Kanai Shah

doi:10.1109/TNS.2023.3262107

CLLBC High Temperature Scintillation Characterization and Detector Integration

Nathaniel Kaneshige, Lakshmi Soundara Pandian, Kyle Werra, Josh Tower, Jarek Glodo, Erik Johnson, Michael P. Dion, Irakli Garishvili, Greg Westphal, Louise G. Worrall, Michael R. Squillante, Kanai Shah

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

1 Scopus citations

Abstract

High-temperature detectors are required for nuclear material accounting measurements for some advanced reactor designs including molten salt reactors. The Cs2LiLa (Br,Cl)6:Ce (CLLBC) scintillator is a dual-mode scintillator that shows excellent gamma detection along with the capability to discriminate gamma rays from neutrons and is available as a commercial product from Radiation Monitoring Devices Inc. (RMD). The energy resolution at room temperature (RT) is 3.0% at 662 keV with a light yield of 45 000 ph/MeV. The gamma-neutron pulse shape discrimination (PSD) figure of merit (FOM) is 3.5 at RT. We investigated the gamma and neutron detection performance of CLLBC scintillators from 25 °C to 200 °C. The results showed a good light yield response for gamma events as a function of temperature while the light yield for neutron-capture events monotonically decreased from 100% to 76% at 200 °C. When integrated with a high-temperature photomultiplier, at 175 °C we obtained energy resolutions of 7.8% for 662 keV gammas and 4.2% for neutron-capture events, together with a PSD FOM of 0.74.

Original language	English
Pages (from-to)	1357-1361
Number of pages	5
Journal	IEEE Transactions on Nuclear Science
Volume	70
Issue number	7
DOIs	https://doi.org/10.1109/TNS.2023.3262107
State	Published - Jul 1 2023

Funding

This work was supported by the U.S. Department of Energy under Contract DE SC0020950.

Funders	Funder number
U.S. Department of Energy	DE SC0020950

Keywords

Cs'LiLa(Br-Cl)':Ce (CLLBC)
elpasolite
high temperature
neutron detection
nuclear accounting
scintillator

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10.1109/TNS.2023.3262107

Cite this

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title = "CLLBC High Temperature Scintillation Characterization and Detector Integration",

abstract = "High-temperature detectors are required for nuclear material accounting measurements for some advanced reactor designs including molten salt reactors. The Cs2LiLa (Br,Cl)6:Ce (CLLBC) scintillator is a dual-mode scintillator that shows excellent gamma detection along with the capability to discriminate gamma rays from neutrons and is available as a commercial product from Radiation Monitoring Devices Inc. (RMD). The energy resolution at room temperature (RT) is 3.0% at 662 keV with a light yield of 45 000 ph/MeV. The gamma-neutron pulse shape discrimination (PSD) figure of merit (FOM) is 3.5 at RT. We investigated the gamma and neutron detection performance of CLLBC scintillators from 25 °C to 200 °C. The results showed a good light yield response for gamma events as a function of temperature while the light yield for neutron-capture events monotonically decreased from 100% to 76% at 200 °C. When integrated with a high-temperature photomultiplier, at 175 °C we obtained energy resolutions of 7.8% for 662 keV gammas and 4.2% for neutron-capture events, together with a PSD FOM of 0.74.",

keywords = "Cs'LiLa(Br-Cl)':Ce (CLLBC), elpasolite, high temperature, neutron detection, nuclear accounting, scintillator",

author = "Nathaniel Kaneshige and Pandian, {Lakshmi Soundara} and Kyle Werra and Josh Tower and Jarek Glodo and Erik Johnson and Dion, {Michael P.} and Irakli Garishvili and Greg Westphal and Worrall, {Louise G.} and Squillante, {Michael R.} and Kanai Shah",

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AU - Kaneshige, Nathaniel

AU - Pandian, Lakshmi Soundara

AU - Werra, Kyle

AU - Tower, Josh

AU - Glodo, Jarek

AU - Johnson, Erik

AU - Dion, Michael P.

AU - Garishvili, Irakli

AU - Westphal, Greg

AU - Worrall, Louise G.

AU - Squillante, Michael R.

AU - Shah, Kanai

PY - 2023/7/1

Y1 - 2023/7/1

N2 - High-temperature detectors are required for nuclear material accounting measurements for some advanced reactor designs including molten salt reactors. The Cs2LiLa (Br,Cl)6:Ce (CLLBC) scintillator is a dual-mode scintillator that shows excellent gamma detection along with the capability to discriminate gamma rays from neutrons and is available as a commercial product from Radiation Monitoring Devices Inc. (RMD). The energy resolution at room temperature (RT) is 3.0% at 662 keV with a light yield of 45 000 ph/MeV. The gamma-neutron pulse shape discrimination (PSD) figure of merit (FOM) is 3.5 at RT. We investigated the gamma and neutron detection performance of CLLBC scintillators from 25 °C to 200 °C. The results showed a good light yield response for gamma events as a function of temperature while the light yield for neutron-capture events monotonically decreased from 100% to 76% at 200 °C. When integrated with a high-temperature photomultiplier, at 175 °C we obtained energy resolutions of 7.8% for 662 keV gammas and 4.2% for neutron-capture events, together with a PSD FOM of 0.74.

AB - High-temperature detectors are required for nuclear material accounting measurements for some advanced reactor designs including molten salt reactors. The Cs2LiLa (Br,Cl)6:Ce (CLLBC) scintillator is a dual-mode scintillator that shows excellent gamma detection along with the capability to discriminate gamma rays from neutrons and is available as a commercial product from Radiation Monitoring Devices Inc. (RMD). The energy resolution at room temperature (RT) is 3.0% at 662 keV with a light yield of 45 000 ph/MeV. The gamma-neutron pulse shape discrimination (PSD) figure of merit (FOM) is 3.5 at RT. We investigated the gamma and neutron detection performance of CLLBC scintillators from 25 °C to 200 °C. The results showed a good light yield response for gamma events as a function of temperature while the light yield for neutron-capture events monotonically decreased from 100% to 76% at 200 °C. When integrated with a high-temperature photomultiplier, at 175 °C we obtained energy resolutions of 7.8% for 662 keV gammas and 4.2% for neutron-capture events, together with a PSD FOM of 0.74.

KW - Cs'LiLa(Br-Cl)':Ce (CLLBC)

KW - elpasolite

KW - high temperature

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KW - nuclear accounting

KW - scintillator

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CLLBC High Temperature Scintillation Characterization and Detector Integration

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