{"title":"基于EMC3-EIRENE网格的大型螺旋装置热测量三维断层扫描技术的发展。","authors":"Koyo Munechika, Hiroaki Tsutsui, Byron J Peterson, Kiyofumi Mukai, Gakushi Kawamura, Daihong Zhang, Felix Reimold, Gabriele Partesotti","doi":"10.1063/5.0225703","DOIUrl":null,"url":null,"abstract":"<p><p>A three-dimensional (3-D) tomography technique is developed for the bolometry system in the Large Helical Device using the EMC3-EIRENE-defined mesh coordinates and the relative gradient smoothing extended to 3-D space. We utilize two types of bolometers, resistive bolometers and infra-red imaging video bolometers, to cover areas that are not visible with only one type of bolometer, the total channels of which are 1088. Although the resolution of the reconstructed solution rises to 59 400 voxels, we prove that the physically meaningful solution having little negative power is obtained by calculating geometry matrices with the tetrahedralization method and assessing the phantom emission and the synthetic data. Moreover, comparing solutions generated by conventional minimum Fisher regularization and 3-D extended relative gradient smoothing enables us to find that the latter provides a better solution.</p>","PeriodicalId":21111,"journal":{"name":"Review of Scientific Instruments","volume":"96 4","pages":""},"PeriodicalIF":1.3000,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Development of a 3-D tomography technique for Large Helical Device bolometry using EMC3-EIRENE grids.\",\"authors\":\"Koyo Munechika, Hiroaki Tsutsui, Byron J Peterson, Kiyofumi Mukai, Gakushi Kawamura, Daihong Zhang, Felix Reimold, Gabriele Partesotti\",\"doi\":\"10.1063/5.0225703\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>A three-dimensional (3-D) tomography technique is developed for the bolometry system in the Large Helical Device using the EMC3-EIRENE-defined mesh coordinates and the relative gradient smoothing extended to 3-D space. We utilize two types of bolometers, resistive bolometers and infra-red imaging video bolometers, to cover areas that are not visible with only one type of bolometer, the total channels of which are 1088. Although the resolution of the reconstructed solution rises to 59 400 voxels, we prove that the physically meaningful solution having little negative power is obtained by calculating geometry matrices with the tetrahedralization method and assessing the phantom emission and the synthetic data. Moreover, comparing solutions generated by conventional minimum Fisher regularization and 3-D extended relative gradient smoothing enables us to find that the latter provides a better solution.</p>\",\"PeriodicalId\":21111,\"journal\":{\"name\":\"Review of Scientific Instruments\",\"volume\":\"96 4\",\"pages\":\"\"},\"PeriodicalIF\":1.3000,\"publicationDate\":\"2025-04-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Review of Scientific Instruments\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://doi.org/10.1063/5.0225703\",\"RegionNum\":4,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"INSTRUMENTS & INSTRUMENTATION\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Review of Scientific Instruments","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1063/5.0225703","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"INSTRUMENTS & INSTRUMENTATION","Score":null,"Total":0}
Development of a 3-D tomography technique for Large Helical Device bolometry using EMC3-EIRENE grids.
A three-dimensional (3-D) tomography technique is developed for the bolometry system in the Large Helical Device using the EMC3-EIRENE-defined mesh coordinates and the relative gradient smoothing extended to 3-D space. We utilize two types of bolometers, resistive bolometers and infra-red imaging video bolometers, to cover areas that are not visible with only one type of bolometer, the total channels of which are 1088. Although the resolution of the reconstructed solution rises to 59 400 voxels, we prove that the physically meaningful solution having little negative power is obtained by calculating geometry matrices with the tetrahedralization method and assessing the phantom emission and the synthetic data. Moreover, comparing solutions generated by conventional minimum Fisher regularization and 3-D extended relative gradient smoothing enables us to find that the latter provides a better solution.
期刊介绍:
Review of Scientific Instruments, is committed to the publication of advances in scientific instruments, apparatuses, and techniques. RSI seeks to meet the needs of engineers and scientists in physics, chemistry, and the life sciences.