Waveform digitizing for LaBr<SUB>3</SUB>/NaI phoswich detector

SHE Rui; JI Jian-Feng; FENG Hua; LI Hong; HAN Dong

doi:10.1088/1674-1137/38/8/086005

Chinese Physics C> 2014, Vol. 38> Issue(8) : 086005 DOI: 10.1088/1674-1137/38/8/086005

Waveform digitizing for LaBr₃/NaI phoswich detector

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Abstract：
The detection efficiency of phoswich detector starts to decrease when Compton scattering becomes significant. Events with energy deposit in both scintillators, if not rejected, are not useful for spectral analysis as the full energy of the incident photon cannot be reconstructed with conventional readout. We show that once the system response is carefully calibrated, the full energy of those double deposit events can be reconstructed using a waveform digitizer as the readout. Our experiment suggests that the efficiency of a photopeak at 662 keV can be increased by a factor of 2 using our LaBr₃/NaI phoswich detector.

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SHE Rui, JI Jian-Feng, FENG Hua, LI Hong and HAN Dong. Waveform digitizing for LaBr₃/NaI phoswich detector[J]. Chinese Physics C, 2014, 38(8): 086005. doi: 10.1088/1674-1137/38/8/086005

SHE Rui, JI Jian-Feng, FENG Hua, LI Hong and HAN Dong. Waveform digitizing for LaBr₃/NaI phoswich detector[J]. Chinese Physics C, 2014, 38(8): 086005. doi: 10.1088/1674-1137/38/8/086005 shu

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Received: 2013-09-04
Revised: 1900-01-01

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Waveform digitizing for LaBr₃/NaI phoswich detector

Corresponding author: JI Jian-Feng,

Received Date: 2013-09-04

Accepted Date: 1900-01-01

Available Online: 2014-08-05

Abstract: The detection efficiency of phoswich detector starts to decrease when Compton scattering becomes significant. Events with energy deposit in both scintillators, if not rejected, are not useful for spectral analysis as the full energy of the incident photon cannot be reconstructed with conventional readout. We show that once the system response is carefully calibrated, the full energy of those double deposit events can be reconstructed using a waveform digitizer as the readout. Our experiment suggests that the efficiency of a photopeak at 662 keV can be increased by a factor of 2 using our LaBr₃/NaI phoswich detector.

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Waveform digitizing for LaBr₃/NaI phoswich detector

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Waveform digitizing for LaBr₃/NaI phoswich detector

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Waveform digitizing for LaBr3/NaI phoswich detector

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Waveform digitizing for LaBr₃/NaI phoswich detector

Waveform digitizing for LaBr₃/NaI phoswich detector