Optimization of energy resolution and Pulse Shape Discrimination for a CLYC detector with integrated digitizers

Xue, Tao; Zhu, Jinfu; Wen, Jialin; Cang, Jirong; Zeng, Zhi; Wei, Lixiang; Jiang, Lin; Liu, Yinong; Li, Jianmin

doi:10.1088/1748-0221/15/02/p02018

Cited by 5 publications

(6 citation statements)

References 14 publications

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“…In this section, we make use of the theory proposed by J.Cang [6,7] et al and ADC quantization noise theory to research how digitizer's sampling properties influence the performance of CCM. Refer to their research, the variance of the integral of CCM σ 2 Q n can be calculated from…”

Section: Derivation Of the Relationship Between Ccm Performance And Smentioning

confidence: 99%

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Performance of linear classification algorithms on α/γ discrimination for LaBr3:Ce scintillation detectors with various pulse digitizer properties

Wen¹,

Zhu²,

Xue

et al. 2020

J. Inst.

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A: With the development of high-speed readout electronics, the digital pulse shape discrimination (PSD) methods have attracted the attention of more researchers, especially in the field of high energy physics and neutron detection. How to choose a PSD algorithm and corresponding data acquisition system (DAQ) naturally becomes a critical problem to settle down for the detection system designers. In this paper, the relationship between the classification performance of different PSD algorithms and digitizers' sampling properties (including sampling rate and the effective number of bits) has been researched based on LaBr 3 :Ce scintillation detectors. A self-developed integrated digitizer configured with five different ADCs and a WavePro 404HD oscilloscope were deployed to digitize the waveforms from LaBr 3 :Ce scintillators. Moreover, three PSD methods, charge comparison method (CCM), least square for classification method (LS) and Fisher's linear discriminant analysis (LDA), based on linear model were applied to discriminate the alpha signals from the intrinsic isotope 227 Ac. With the LS method and a 125 MSPS 14-Bit ADC, the FoM value was 1.424±0.042, which is similar to the result from LDA but 31% better than the result of CCM. The discrimination results showed that the performances of LS and LDA are less affected by the sampling rate with respect to the CCM method, which reflects in a better PSD capability. The results of this paper can help the developers of detector systems to make a trade-off among sampling properties, desirable discrimination results and the cost of systems.

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Section: Derivation Of the Relationship Between Ccm Performance And Smentioning

confidence: 99%

Section: Derivation Of the Relationship Between Ccm Performance And S...mentioning

confidence: 99%

Performance of linear classification algorithms on α/γ discrimination for LaBr3:Ce scintillation detectors with various pulse digitizer properties

Wen¹,

Zhu²,

Xue

et al. 2020

J. Inst.

Self Cite

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“…The traditional Li-doping scintillators like LiI(Eu), Li-glass cannot accurately discriminate neutron and high-energy gamma because of their neutron and gamma pulse shapes are the same [4,5]. Elpasolite single crystals containing Li, such as Cs 2 LiYCl 6 :Ce(CLYC), have been studied and applied because of their excellent neutron/gamma ray discrimination abilities [6][7][8][9]. However, because of the difficulties with crystal growth and the high cost of the materials, cost-effective scintillators have yet to be developed [10].…”

Section: Introductionmentioning

confidence: 99%

Design and performance of a NaIL detector for neutron/gamma discrimination

Ma¹,

Wang²,

Chen³

et al. 2021

J. Inst.

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NaI(Tl+Li) (NaIL) is a promising new inorganic scintillator for thermal neutron detection with the ability for pulse shape discrimination (PSD). In this study, we first built a dual-gamma/neutron sensitive detector based on a NaIL scintillator, a photomultiplier tube and a custom-built circuit. Then, we investigated its temperature response and optimized the PSD parameters, obtaining a figure of merit (FOM) of up to 4.5 at 0–50°C. Also, we examined the effect of the count rate on the detector's neutron and gamma discrimination performance; after optimization, we obtained an FOM of above 3.0 at 5000–40000 counts per second. Lastly, we estimated the neutron detection efficiency of this detector, which is about 13 cps/nv. This detector gave an excellent performance in neutron/gamma discrimination, and can be used widely in the detection of mixed radiation fields.

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“…The uncertainty of integral charge of real system is, (8) Where is the length of long gate, is the sample interval.…”

Section: B Theoretical Calculation Of Energy Resolutionmentioning

confidence: 99%

“…The CSPs convert the input current from PMT into voltage, so the output pulse can be digitized directly. [1] [2] [3] [8]. Various parameters of CSPs such as bandwidth, gain, stability and noise etc.…”

Section: Introductionmentioning

confidence: 99%

Performances of operational amplifiers in front-end electronics for nuclear radiation detectors

Cerizza

Fazzi

Varoli

IEEE Symposium Conference Record Nuclear Science 2004.

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Operational amplifiers in charge sensitive configuration are an attractive solution for front-end electronics in cost-sensitive radiation detection systems. The noise performances of several JFET input operational were tested in a charge-sensitive configuration. Some rather old devices reached noise performances low enough for detection of x and γ rays in application were extreme energy resolution is no required as, for instance, dosimetry and ambient monitoring applications. On the contrary the devices with the best specification for noise and speed shown an excess noise when used in a charge sensitive configuration with the low feedback capacitor required by this application. By matching the impedences seen at both input of the amplifier, the noise is reduced near to the theoretical value. The origin of this fact seems to be a non white equivalent current noise generator, whose origin is in the first stage bias circuit. Datasheet parameters are not sufficient, at least in some cases, for computing the actual noise of a charge preamplifier built with an operational amplifier

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Optimization of energy resolution and Pulse Shape Discrimination for a CLYC detector with integrated digitizers

Cited by 5 publications

References 14 publications

Performance of linear classification algorithms on α/γ discrimination for LaBr3:Ce scintillation detectors with various pulse digitizer properties

Performance of linear classification algorithms on α/γ discrimination for LaBr3:Ce scintillation detectors with various pulse digitizer properties

Design and performance of a NaIL detector for neutron/gamma discrimination

Performances of operational amplifiers in front-end electronics for nuclear radiation detectors

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