{"title":"On the Applicability of 48V in Positron Annihilation Lifetime Spectroscopy","authors":"Mircea Lechintan;Nikolay Djourelov","doi":"10.1109/TNS.2024.3451618","DOIUrl":"10.1109/TNS.2024.3451618","url":null,"abstract":"The applicability of the 48V isotope as a source of positrons for positron annihilation lifetime spectroscopy (PALS) measurements is discussed. It has been demonstrated that using such a positron source, the classical PALS setup with two detectors does not accurately determine the positron annihilation parameters of the samples being studied. This issue arises when one of the two nuclear gamma rays (of energies of 983 and 1312 keV) that are emitted almost simultaneously with the creation of a positron triggers a start signal, while the other nuclear gamma triggers a stop signal instead of the 511-keV annihilation quanta. These events manifest as prompt coincidences in the start-stop histogram, rendering the analysis of PALS spectra unreliable. To address this problem, a modification to the classical PALS spectrometer was proposed and tested. This modification involved incorporating a logic branch that significantly reduced the undesired prompt coincidences between the 983- and 1312-keV gamma rays. By conducting measurements on a series of samples utilizing 2- and 25-\u0000<inline-formula> <tex-math>$mu $ </tex-math></inline-formula>\u0000 m-thick Ti foils enriched with 48V, it was demonstrated that the altered setup reliably extracts accurate information on the positron annihilation states within the samples being examined.","PeriodicalId":13406,"journal":{"name":"IEEE Transactions on Nuclear Science","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2024-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10659162","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142189518","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}
{"title":"A Review of Single-Event Upset-Rate Calculation Methods","authors":"D.L. Hansen, T. Manich, I. Zavatkay","doi":"10.1109/tns.2024.3451312","DOIUrl":"https://doi.org/10.1109/tns.2024.3451312","url":null,"abstract":"","PeriodicalId":13406,"journal":{"name":"IEEE Transactions on Nuclear Science","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142189519","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}
{"title":"Measuring Performance Under Failures in the LHCb Data Acquisition Network","authors":"Eloïse Stein, Flavio Pisani, Tommaso Colombo, Cristel Pelsser","doi":"10.1109/tns.2024.3451177","DOIUrl":"https://doi.org/10.1109/tns.2024.3451177","url":null,"abstract":"","PeriodicalId":13406,"journal":{"name":"IEEE Transactions on Nuclear Science","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142189521","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}
Sun Young Ryu, Shoji Ajimura, Ryo Kobayakawa, Keigo Mizutani, Masaru Yosoi, Ken Watanabe, Yuta Sada, Tomoaki Hotta, Takatsugu Ishikawa, Masayuki Niiyama, Jung Keun Ahn
{"title":"Network-distributed Data Acquisition System for Photoproduction Experiments with LEPS2","authors":"Sun Young Ryu, Shoji Ajimura, Ryo Kobayakawa, Keigo Mizutani, Masaru Yosoi, Ken Watanabe, Yuta Sada, Tomoaki Hotta, Takatsugu Ishikawa, Masayuki Niiyama, Jung Keun Ahn","doi":"10.1109/tns.2024.3450730","DOIUrl":"https://doi.org/10.1109/tns.2024.3450730","url":null,"abstract":"","PeriodicalId":13406,"journal":{"name":"IEEE Transactions on Nuclear Science","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142189523","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}
Juan A. Clemente;Mohammadreza Rezaei;Juan C. Fabero;Hortensia Mecha;Francisco J. Franco
{"title":"LELAPE: An Open-Source Tool to Classify SEUs According to Their Multiplicity in Radiation-Ground Tests on Memories","authors":"Juan A. Clemente;Mohammadreza Rezaei;Juan C. Fabero;Hortensia Mecha;Francisco J. Franco","doi":"10.1109/TNS.2024.3450607","DOIUrl":"10.1109/TNS.2024.3450607","url":null,"abstract":"This article presents Listas de Eventos Localizando Anomalías al Preparar Estadísticas (LELAPE), an easy-to-use tool that aims at classifying the single-event upsets (SEUs) that were observed in radiation-ground experiments on a memory or a field-programmable gate array (FPGA) into single-bit upsets (SBUs) and multiple-cell upsets (MCUs) with various multiplicities. This tool takes as input one or several datasets obtained in radiation experiments and returns as output the list of events that were identified, without any limitation on the type of device (SRAMs, DRAMs, PSRAMs, FPGAs, and so on) or manufacturing technology (planar, FinFET, and so on). The classification method used consists in analyzing statistical anomalies found in the input dataset(s) that would not be found in a theoretical scenario where only single-bit upsets (SBUs) can occur. It will be proven that the prediction accuracy attained is very high, by using data issued from actual experiments carried out by the authors on several SRAMs under protons and neutrons with various energies. This tool has been made available to the Community through a Zenodo repository and protected by the European Union Public License (EUPL).","PeriodicalId":13406,"journal":{"name":"IEEE Transactions on Nuclear Science","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2024-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10649596","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142189524","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}
{"title":"Efficient and Accurate Optimal Design Method for Radiation Shielding","authors":"Yu Han, Tao Ying, He Zhu, Jianqun Yang, Xingji Li","doi":"10.1109/tns.2024.3449891","DOIUrl":"https://doi.org/10.1109/tns.2024.3449891","url":null,"abstract":"","PeriodicalId":13406,"journal":{"name":"IEEE Transactions on Nuclear Science","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142189522","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}
{"title":"Alphavoltaic Performance of 4H-SiC Schottky Barrier Diodes","authors":"A. Shilpa, N V L Narasimha Murty","doi":"10.1109/tns.2024.3447772","DOIUrl":"https://doi.org/10.1109/tns.2024.3447772","url":null,"abstract":"","PeriodicalId":13406,"journal":{"name":"IEEE Transactions on Nuclear Science","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142189528","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}
Xiaoping Dong;Mingmin Huang;Yao Ma;Chengwen Fu;Mu He;Zhimei Yang;Yun Li;Min Gong
{"title":"Mechanism and Physical Model of the Single-Event Leakage Current for SiC JBS Diodes","authors":"Xiaoping Dong;Mingmin Huang;Yao Ma;Chengwen Fu;Mu He;Zhimei Yang;Yun Li;Min Gong","doi":"10.1109/TNS.2024.3446850","DOIUrl":"10.1109/TNS.2024.3446850","url":null,"abstract":"The single-event leakage current (SELC) mechanism of the silicon carbide (SiC) junction barrier Schottky (JBS) diode is thoroughly investigated in this work. A comprehensive physical model to quantify the degree of SELC for the JBS diode is also proposed. From the collected experimental results, it is found that the leakage current of the SiC JBS diode increased with the increase in both the reverse bias voltage under irradiation and the total fluence. According to the results of the current response during irradiation and the emission microscope (EMMI) after irradiation, it can be inferred that the leakage current degradation of the samples originated from the accumulation of the Schottky junction’s area with a barrier reduction by the ion-induced local high temperature. Taking the degradation mechanism into account, a novel physical model is developed with the help of TCAD simulations. This model clearly highlights the relationship between the degradation (i.e., Schottky barrier height reduction and amplification of the leakage current) and the irradiation conditions (i.e., reverse bias voltage and fluence). This work provides valuable insights into the underlying origins of the SELC effect and its potential mitigation in SiC JBS diodes.","PeriodicalId":13406,"journal":{"name":"IEEE Transactions on Nuclear Science","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2024-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142189527","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}