Improvement of the energy resolution in a pixellated CdZnTe detector using depth sensing based on pulse rise-time correlation
DC Field | Value | Language |
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dc.contributor.author | Cho, H. Y. | - |
dc.contributor.author | Lee, C. S. | - |
dc.date.accessioned | 2022-01-06T02:42:30Z | - |
dc.date.available | 2022-01-06T02:42:30Z | - |
dc.date.issued | 2016-02 | - |
dc.identifier.issn | 1748-0221 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/52929 | - |
dc.description.abstract | In this work we present the pulse rise-time method by using signals from one electrode to determine the interaction depth in a 16-pixellated CdZnTe (CZT) detector manufactured by eV Products. Pulse shapes were theoretically calculated by varing the depth in steps of 0.5 mm with fixing the in-plane position. The electric field in the CZT detector was calculated numericallly by using the weighting potential method. The depth information was extracted by the rise-time correlation using calculations for anode pulse shapes. In order to check the accuracy of the pulse shape calculation, we performed a maximum-likelihood fitting process by comparing measured pulse shapes with calculated ones. The pulse shapes were digitally recorded by using a 64-channel 62.5 MS/s digitizer (v1740B) manufactured by CAEN. Gamma rays emitted from a Na-22 standard source were bombarded on the negatively biased contact of the CZT detector. The low energy tail of a photo peak attributed to the hole trapping in the energy spectrum was corrected by using the rise-time correlation. The energy resolution was improved from 9.3% to 6.5% for the 511-keV photo peak with the T-50 rise-time correlation. | - |
dc.language | 영어 | - |
dc.language.iso | ENG | - |
dc.publisher | IOP PUBLISHING LTD | - |
dc.title | Improvement of the energy resolution in a pixellated CdZnTe detector using depth sensing based on pulse rise-time correlation | - |
dc.type | Article | - |
dc.identifier.doi | 10.1088/1748-0221/11/02/C02081 | - |
dc.identifier.bibliographicCitation | JOURNAL OF INSTRUMENTATION, v.11, no.2 | - |
dc.description.isOpenAccess | N | - |
dc.identifier.wosid | 000371479800081 | - |
dc.identifier.scopusid | 2-s2.0-84960154720 | - |
dc.citation.number | 2 | - |
dc.citation.title | JOURNAL OF INSTRUMENTATION | - |
dc.citation.volume | 11 | - |
dc.type.docType | Article; Proceedings Paper | - |
dc.publisher.location | 영국 | - |
dc.subject.keywordAuthor | Gamma detectors (scintillators, CZT, HPG, HgI etc) | - |
dc.subject.keywordAuthor | Data analysis | - |
dc.subject.keywordAuthor | Charge transport and multiplication in solid media | - |
dc.subject.keywordPlus | CHARGE | - |
dc.relation.journalResearchArea | Instruments & Instrumentation | - |
dc.relation.journalWebOfScienceCategory | Instruments & Instrumentation | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
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