Characterizations of BC501A and BC537 liquid scintillator detectors

Qin, Jianguo; Lai, Caifeng; Ye, Bangjiao; Liu, Rong; Zhang, Xinwei; Li, Jiang

doi:10.1016/j.apradiso.2015.06.008

Cited by 16 publications

(3 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…𝜇 𝑖,edge = 1.05𝜇 𝑖 . The shifted position of the error function centroid was motivated by the experimental observation that the true Compton edge position is typically closer to the point on the Compton edge at 2/3 of the edge maximum, rather than 1/2 where the centroid of the complementary error function is located [42,45]. An initial fit was performed to estimate the standard deviations of the peaks, after which the final fit was performed using limits of ±5𝜎 from the initial fit.…”

Section: Jinst 19 P01008mentioning

confidence: 99%

Characterization of organic glass scintillator bars and their potential for a hybrid neutron/gamma ray imaging system for proton radiotherapy range verification

Turko,

Beyer,

Junghans

et al. 2024

J. Inst.

View full text Add to dashboard Cite

For accurate and simultaneous imaging of fast neutrons (FNs) and prompt gamma rays (PGs) produced during proton therapy, the selection of a highly performant detector material is crucial. In this work, a promising candidate material known as organic glass scintillator (OGS) is characterized for this task. To this end, a precisely-timed source of neutrons and Bremsstrahlung radiation produced by the nELBE facility was used to study the light output and neutron/gamma ray pulse shape discrimination (PSD) properties of a 1 × 1 × 20 cm3 OGS bar with double-sided readout. Furthermore, the energy, timing, and depth-of-interaction (DOI) resolutions of 1 × 1 × 10 cm3 and 1 × 1 × 20 cm3 OGS and EJ-200 bars were characterized with radioactive sources. For electron-equivalent energies above 0.5 MeVee, OGS was found to have excellent PSD capabilities (figure-of-merit above 1.27), energy resolution (below 12%), coincident time resolution (below 500 ps), and DOI resolution (below 10 mm). This work establishes the data analysis methods required for hybrid FN/PG imaging using OGS, and demonstrates the materials' excellent performance for this application.

show abstract

Section: Jinst 19 P01008mentioning

confidence: 99%

Characterization of organic glass scintillator bars and their potential for a hybrid neutron/gamma ray imaging system for proton radiotherapy range verification

Turko,

Beyer,

Junghans

et al. 2024

J. Inst.

View full text Add to dashboard Cite

show abstract

“…This time represents the duration between the onset of the signal and the occurrence of the pulse. The first function, labeled Signal Filtering and CFD in Figure 5, applies lowpass filtering to the signals using a 20-tap FIR filter defined in Equation (1), where Xn and Yn are the input and output samples, respectively. The decision to use a 20-tap FIR filter is based on the fact that the values decrease with each iteration, and values beyond 20 have a negligible impact on the final result.…”

Section: Signal Peak Estimationmentioning

confidence: 99%

“…The light is then collected by a photomultiplier and converted into an electric pulse. The pulse shape produced by gamma photons differs from those produced by neutrons, and thus, an analysis of the pulse allows discrimination between both kinds of particles [1,2]. Guerrero et al developed an improved method of digital pulse shape analysis (DPSA) [3], which is based on the integration of two different ranges of the signal.…”

Section: Introductionmentioning

confidence: 99%

Hardware Acceleration of Digital Pulse Shape Analysis Using FPGAs

González,

Ruiz,

Carpeño

et al. 2024

Sensors

View full text Add to dashboard Cite

The BC501A sensor is a liquid scintillator frequently used in nuclear physics for detecting fast neutrons. This paper describes a hardware implementation of digital pulse shape analysis (DPSA) for real-time analysis. DPSA is an algorithm that extracts the physically relevant parameters from the detected BC501A signals. The hardware solution is implemented in a MicroTCA system that provides the physical, mechanical, electrical, and cooling support for an AMC board (NAMC-ZYNQ-FMC) with a Xilinx ZYNQ Ultrascale-MP SoC. The Xilinx FPGA programmable logic implements a JESD204B interface to high-speed ADCs. The physical and datalink JESD204B layers are implemented using hardware description language (HDL), while the Xilinx high-level synthesis language (HLS) is used for the transport and application layers. The DPSA algorithm is a JESD204B application layer that includes a FIR filter and a constant fraction discriminator (CFD) function, a baseline calculation function, a peak detection function, and an energy calculation function. This architecture achieves an analysis mean time of less than 100 µs per signal with an FPGA resource utilization of about 50% of its most used resources. This paper presents a high-performance DPSA embedded system that interfaces with a 1 GS/s ADC and performs accurate calculations with relatively low latency.

show abstract

Characterization of the hybrid neutron detector

Singh

Subrahmanyam

et al. 2018

Indian J Phys

View full text Add to dashboard Cite

Characterizations of BC501A and BC537 liquid scintillator detectors

Cited by 16 publications

References 20 publications

Characterization of organic glass scintillator bars and their potential for a hybrid neutron/gamma ray imaging system for proton radiotherapy range verification

Characterization of organic glass scintillator bars and their potential for a hybrid neutron/gamma ray imaging system for proton radiotherapy range verification

Hardware Acceleration of Digital Pulse Shape Analysis Using FPGAs

Characterization of the hybrid neutron detector

Contact Info

Product

Resources

About