{"title":"Enhancement of CsPbBr3 detectors spectral performance for gamma-ray detection using simultaneous multi-waveform clustering method","authors":"Majid Khorsandi , Shangzhen Zhu , Ling-Jian Meng","doi":"10.1016/j.nima.2025.170461","DOIUrl":null,"url":null,"abstract":"<div><div>As a room-temperature semiconductor detector, all-inorganic Proveskit CsPbBr<sub>3</sub> (CPB) has great potential for gamma-ray detection and spectroscopy. However, most CPB samples suffer from spatially non-uniform responses, leading to variations in charge collection efficiency (CCE) for the identical deposited energy at different locations within the detector. This issue affects the apparent energy resolution of the detector. Therefore, the development of methods for correcting non-uniform CCE would be beneficial. In this paper, we have explored a simultaneous multi-waveform clustering method to classify different interaction patterns and derive the variation of CCE accordingly. This information is then used to correct the energy spectrum and enhance the energy resolution. Our results showed that by using this method, we can significantly improve the detector's energy resolution from 11.5 % at 122 keV to 4.4 % after the correction. The main advantage of our approach is that we can improve the spectral performance of a detector regardless of detector configuration and the sources of variations in CCE. Since the proposed method is based on waveform analysis, it could be effectively applied to other room-tempreature semiconductor detectors, such as CZTs.</div></div>","PeriodicalId":19359,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment","volume":"1075 ","pages":"Article 170461"},"PeriodicalIF":1.5000,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment","FirstCategoryId":"101","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0168900225002621","RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"INSTRUMENTS & INSTRUMENTATION","Score":null,"Total":0}
引用次数: 0
Abstract
As a room-temperature semiconductor detector, all-inorganic Proveskit CsPbBr3 (CPB) has great potential for gamma-ray detection and spectroscopy. However, most CPB samples suffer from spatially non-uniform responses, leading to variations in charge collection efficiency (CCE) for the identical deposited energy at different locations within the detector. This issue affects the apparent energy resolution of the detector. Therefore, the development of methods for correcting non-uniform CCE would be beneficial. In this paper, we have explored a simultaneous multi-waveform clustering method to classify different interaction patterns and derive the variation of CCE accordingly. This information is then used to correct the energy spectrum and enhance the energy resolution. Our results showed that by using this method, we can significantly improve the detector's energy resolution from 11.5 % at 122 keV to 4.4 % after the correction. The main advantage of our approach is that we can improve the spectral performance of a detector regardless of detector configuration and the sources of variations in CCE. Since the proposed method is based on waveform analysis, it could be effectively applied to other room-tempreature semiconductor detectors, such as CZTs.
期刊介绍:
Section A of Nuclear Instruments and Methods in Physics Research publishes papers on design, manufacturing and performance of scientific instruments with an emphasis on large scale facilities. This includes the development of particle accelerators, ion sources, beam transport systems and target arrangements as well as the use of secondary phenomena such as synchrotron radiation and free electron lasers. It also includes all types of instrumentation for the detection and spectrometry of radiations from high energy processes and nuclear decays, as well as instrumentation for experiments at nuclear reactors. Specialized electronics for nuclear and other types of spectrometry as well as computerization of measurements and control systems in this area also find their place in the A section.
Theoretical as well as experimental papers are accepted.