Pub Date : 2025-08-20DOI: 10.1109/TNS.2025.3600988
Z. Yu;K. Starosta;C. Andreoiu;H. Asch;R. Gerber;G. Hackman;M. S. Martin;A. Redey;D. Tam;J. Tõke;K. van Wieren;A. Woinoski
The $8pi $ gamma-ray spectrometer is a highly-efficient and selective ball array of bismuth germanium oxide (BGO) detectors. In 2014, it was relocated from TRIUMF, Canada’s particle accelerator center, to the Simon Fraser University Nuclear Science Laboratory (SFU NSL), where it has been recommissioned with upgraded components for rare decay spectroscopy. In its current configuration, $8pi $ has 12 BGO pentagon detectors and 60 BGO hexagon detectors arranged in an icosahedral symmetry. Together, they provide 132 readout channels and approximately 95% solid-angle coverage. A unique digital data acquisition system (DAQ) has been developed around the existing $8pi $ BGO detectors for the study of rare decays. This system allows for the fine-tuning of logic and digitization parameters through a web interface, eliminating the need for physical reconfiguration and providing a level of flexibility not previously offered. This upgraded DAQ system includes three synchronized VF48 digitizers for waveform digitization, two XLM72S modules for online multiplicity filtering, and additional components for thresholding and pile-up handling functionality. Performance metrics such as energy resolution, timing resolution, and efficiency were measured, demonstrating the functionality of all $8pi $ subsystems. The spectrometer is fully prepared for experiments demanding efficient and selective time-resolved gamma-ray spectroscopy. Designed with future expansion in mind, $8pi $ can easily support additional detectors, making it well-suited for a wide range of future experiments.
{"title":"A Versatile Digital Data Acquisition System for the 8π Gamma-Ray Spectrometer","authors":"Z. Yu;K. Starosta;C. Andreoiu;H. Asch;R. Gerber;G. Hackman;M. S. Martin;A. Redey;D. Tam;J. Tõke;K. van Wieren;A. Woinoski","doi":"10.1109/TNS.2025.3600988","DOIUrl":"https://doi.org/10.1109/TNS.2025.3600988","url":null,"abstract":"The <inline-formula> <tex-math>$8pi $ </tex-math></inline-formula> gamma-ray spectrometer is a highly-efficient and selective ball array of bismuth germanium oxide (BGO) detectors. In 2014, it was relocated from TRIUMF, Canada’s particle accelerator center, to the Simon Fraser University Nuclear Science Laboratory (SFU NSL), where it has been recommissioned with upgraded components for rare decay spectroscopy. In its current configuration, <inline-formula> <tex-math>$8pi $ </tex-math></inline-formula> has 12 BGO pentagon detectors and 60 BGO hexagon detectors arranged in an icosahedral symmetry. Together, they provide 132 readout channels and approximately 95% solid-angle coverage. A unique digital data acquisition system (DAQ) has been developed around the existing <inline-formula> <tex-math>$8pi $ </tex-math></inline-formula> BGO detectors for the study of rare decays. This system allows for the fine-tuning of logic and digitization parameters through a web interface, eliminating the need for physical reconfiguration and providing a level of flexibility not previously offered. This upgraded DAQ system includes three synchronized VF48 digitizers for waveform digitization, two XLM72S modules for online multiplicity filtering, and additional components for thresholding and pile-up handling functionality. Performance metrics such as energy resolution, timing resolution, and efficiency were measured, demonstrating the functionality of all <inline-formula> <tex-math>$8pi $ </tex-math></inline-formula> subsystems. The spectrometer is fully prepared for experiments demanding efficient and selective time-resolved gamma-ray spectroscopy. Designed with future expansion in mind, <inline-formula> <tex-math>$8pi $ </tex-math></inline-formula> can easily support additional detectors, making it well-suited for a wide range of future experiments.","PeriodicalId":13406,"journal":{"name":"IEEE Transactions on Nuclear Science","volume":"72 9","pages":"3102-3108"},"PeriodicalIF":1.9,"publicationDate":"2025-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145090099","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-08-18DOI: 10.1109/TNS.2025.3595494
{"title":"IEEE Transactions on Nuclear Science information for authors","authors":"","doi":"10.1109/TNS.2025.3595494","DOIUrl":"https://doi.org/10.1109/TNS.2025.3595494","url":null,"abstract":"","PeriodicalId":13406,"journal":{"name":"IEEE Transactions on Nuclear Science","volume":"72 8","pages":"C3-C3"},"PeriodicalIF":1.9,"publicationDate":"2025-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11129012","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144868062","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-08-18DOI: 10.1109/TNS.2025.3592743
Gian-Franco Dalla Betta
Presents the recipients of (IEEE Nuclear and Plasma Sciences Society) awards for (2025).
介绍（IEEE核与等离子体科学学会）（2025）奖的获得者。
{"title":"IEEE Transactions on Nuclear Science 2025 Best Paper Award","authors":"Gian-Franco Dalla Betta","doi":"10.1109/TNS.2025.3592743","DOIUrl":"https://doi.org/10.1109/TNS.2025.3592743","url":null,"abstract":"Presents the recipients of (IEEE Nuclear and Plasma Sciences Society) awards for (2025).","PeriodicalId":13406,"journal":{"name":"IEEE Transactions on Nuclear Science","volume":"72 8","pages":"2858-2859"},"PeriodicalIF":1.9,"publicationDate":"2025-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11129020","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144868437","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-08-18DOI: 10.1109/TNS.2025.3594609
Gian-Franco Dalla betta
{"title":"Editorial Introducing New Associate Editors","authors":"Gian-Franco Dalla betta","doi":"10.1109/TNS.2025.3594609","DOIUrl":"https://doi.org/10.1109/TNS.2025.3594609","url":null,"abstract":"","PeriodicalId":13406,"journal":{"name":"IEEE Transactions on Nuclear Science","volume":"72 8","pages":"2860-2860"},"PeriodicalIF":1.9,"publicationDate":"2025-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11129018","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144868440","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-08-18DOI: 10.1109/TNS.2025.3592046
Dan Fleetwood
{"title":"List of Reviewers RADECS 2024 Special Issue","authors":"Dan Fleetwood","doi":"10.1109/TNS.2025.3592046","DOIUrl":"https://doi.org/10.1109/TNS.2025.3592046","url":null,"abstract":"","PeriodicalId":13406,"journal":{"name":"IEEE Transactions on Nuclear Science","volume":"72 8","pages":"2262-2263"},"PeriodicalIF":1.9,"publicationDate":"2025-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11128996","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144867944","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-08-18DOI: 10.1109/TNS.2025.3595639
{"title":"IEEE Transactions on Nuclear Science information for authors","authors":"","doi":"10.1109/TNS.2025.3595639","DOIUrl":"https://doi.org/10.1109/TNS.2025.3595639","url":null,"abstract":"","PeriodicalId":13406,"journal":{"name":"IEEE Transactions on Nuclear Science","volume":"72 8","pages":"C3-C3"},"PeriodicalIF":1.9,"publicationDate":"2025-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11129024","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144868363","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
MPT2321 is a 32-channel application-specific integrated circuit (ASIC) for silicon photomultiplier (SiPM), featuring high signal-to-noise ratio (SNR) and energy resolution, along with outstanding timing performance. Particularly for single-photon signals, the chip maintains a considerably high SNR. This article describes the fundamental architecture and key performance parameters of the chip. A series of measurements was conducted to evaluate the charge and time detection performance. First, the timing jitters of the analog and analog–digital mixed parts of the chip were measured by external charge injection. Then, a single photon spectrum was acquired by irradiating the SiPM (Hamamatsu S15639-1325PS, $1.3times 1.1$ mm, and pixel pitch of $25~mu $ m) with a high-precision pulsed laser, revealing clearly distinguishable peaks. Meanwhile, factors affecting timing jitter were also analyzed. Additionally, by utilizing light emitting diode (LED) emission, the single-photon spectra of different single-photon avalanche diode (SPAD) sizes (25, 35, and $40~mu $ m) were presented. Finally, the energy resolution was measured to be 8.7% $pm ~0.1$ % full width at half maximum (FWHM) at 511 keV using SiPM (Hamamatsu S14160-6050HS, $6times 6$ mm) coupled with lutetium yttrium oxyorthosilicate (LYSO) crystals ($4times 4times 20$ mm). With time walk correction, a coincidence time resolution (CTR) of $289~pm ~6$ ps (FWHM) was achieved. Based on the results of these performance measurements, MPT2321 has been verified to be a qualified candidate for applications in several fields.
{"title":"Performance of a SiPM Readout ASIC Chip MPT2321","authors":"Qin Jiang;Yan Huang;Rong Zhou;Zhonghai Wang;Wei Shen","doi":"10.1109/TNS.2025.3598055","DOIUrl":"https://doi.org/10.1109/TNS.2025.3598055","url":null,"abstract":"MPT2321 is a 32-channel application-specific integrated circuit (ASIC) for silicon photomultiplier (SiPM), featuring high signal-to-noise ratio (SNR) and energy resolution, along with outstanding timing performance. Particularly for single-photon signals, the chip maintains a considerably high SNR. This article describes the fundamental architecture and key performance parameters of the chip. A series of measurements was conducted to evaluate the charge and time detection performance. First, the timing jitters of the analog and analog–digital mixed parts of the chip were measured by external charge injection. Then, a single photon spectrum was acquired by irradiating the SiPM (Hamamatsu S15639-1325PS, <inline-formula> <tex-math>$1.3times 1.1$ </tex-math></inline-formula> mm, and pixel pitch of <inline-formula> <tex-math>$25~mu $ </tex-math></inline-formula>m) with a high-precision pulsed laser, revealing clearly distinguishable peaks. Meanwhile, factors affecting timing jitter were also analyzed. Additionally, by utilizing light emitting diode (LED) emission, the single-photon spectra of different single-photon avalanche diode (SPAD) sizes (25, 35, and <inline-formula> <tex-math>$40~mu $ </tex-math></inline-formula>m) were presented. Finally, the energy resolution was measured to be 8.7% <inline-formula> <tex-math>$pm ~0.1$ </tex-math></inline-formula>% full width at half maximum (FWHM) at 511 keV using SiPM (Hamamatsu S14160-6050HS, <inline-formula> <tex-math>$6times 6$ </tex-math></inline-formula> mm) coupled with lutetium yttrium oxyorthosilicate (LYSO) crystals (<inline-formula> <tex-math>$4times 4times 20$ </tex-math></inline-formula> mm). With time walk correction, a coincidence time resolution (CTR) of <inline-formula> <tex-math>$289~pm ~6$ </tex-math></inline-formula> ps (FWHM) was achieved. Based on the results of these performance measurements, MPT2321 has been verified to be a qualified candidate for applications in several fields.","PeriodicalId":13406,"journal":{"name":"IEEE Transactions on Nuclear Science","volume":"72 9","pages":"3094-3101"},"PeriodicalIF":1.9,"publicationDate":"2025-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145090095","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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