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Journal of Cryogenics and Superconductivity Society of Japan最新文献

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Electromagnetic Characteristics of Stacked Superconductors and Permanent Magnets Applying for Magnetic Bearings 应用于磁轴承的叠层超导体和永磁体的电磁特性
Journal of Cryogenics and Superconductivity Society of Japan Pub Date : 2023-09-20 DOI: 10.2221/jcsj.58.245
Yutaka TERAO, Shuichiro FUCHINO, Masayoshi OHYA
{"title":"Electromagnetic Characteristics of Stacked Superconductors and Permanent Magnets Applying for Magnetic Bearings","authors":"Yutaka TERAO, Shuichiro FUCHINO, Masayoshi OHYA","doi":"10.2221/jcsj.58.245","DOIUrl":"https://doi.org/10.2221/jcsj.58.245","url":null,"abstract":"This paper discusses magnetic bearings made of permanent magnets（ PM） and ring-shape stacked superconductors. We evaluate basic electromagnetic characteristics such as thrust force and rotation characteristics via experiments. The thrust force using a cylindrical PM and the ring-shape stacked superconductors are compared with the PM and a ring-shape bulk superconductor. The experimental results showed that both thrust forces are almost the same as 14 N. On the other hand, the rotation stability of the bearings using the 1- or 3-stacked superconductors, or a bulk superconductor is evaluated via time constant. The experimental results indicated that the time constants of the magnetic bearing using 3-stacked superconductors and using a bulk superconductor are 3.85 s and 2.92 s, respectively. The results showed that 3-stacked superconducting magnetic bearing have a competitive with the magnetic bearings using bulk superconductors.","PeriodicalId":15559,"journal":{"name":"Journal of Cryogenics and Superconductivity Society of Japan","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136265918","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
高圧ガス保安法改正及び関連冷凍機技術 高圧ガス保安法改正及び関连冷冻机技术
Journal of Cryogenics and Superconductivity Society of Japan Pub Date : 2023-09-20 DOI: 10.2221/jcsj.58.240
Yoshitaka IKUTA
{"title":"高圧ガス保安法改正及び関連冷凍機技術","authors":"Yoshitaka IKUTA","doi":"10.2221/jcsj.58.240","DOIUrl":"https://doi.org/10.2221/jcsj.58.240","url":null,"abstract":"","PeriodicalId":15559,"journal":{"name":"Journal of Cryogenics and Superconductivity Society of Japan","volume":"165 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136265924","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Development of 4K GM-JT Cryocooler Systems 4K GM-JT制冷机系统的研制
Journal of Cryogenics and Superconductivity Society of Japan Pub Date : 2023-09-20 DOI: 10.2221/jcsj.58.235
Takuya SHIMADA, Syuji SASAZAKI
{"title":"Development of 4K GM-JT Cryocooler Systems","authors":"Takuya SHIMADA, Syuji SASAZAKI","doi":"10.2221/jcsj.58.235","DOIUrl":"https://doi.org/10.2221/jcsj.58.235","url":null,"abstract":"As an example of helium gas reduction due to the high price and difficulty of obtaining helium gas in recent years, one method is to cool superconducting magnets and superconducting radio-frequency cavities, etc. directly with a small mechanical cryocooler instead of using liquid helium. In this case, since the cooling capacity per unit is small, multiple units are used in combination depending on the required cooling capacity, which causes problems in terms of power consumption （efficiency）, footprint, and maintenance costs. Therefore, we have been developing a large-capacity and high-efficiency 4KGM-JT（Gifford-McMahon-Joule-Thomson） cryocooler system in the 10 W class at 4.2 K, using our 4K-GM cryocooler as a pre-cooler. This paper describes the technical details used in this cryocooler system.","PeriodicalId":15559,"journal":{"name":"Journal of Cryogenics and Superconductivity Society of Japan","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136265922","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
特集「高圧ガス保安法改正及び関連冷凍機技術」によせて 特集《高压气体安全法修改及相关制冷技术》
Journal of Cryogenics and Superconductivity Society of Japan Pub Date : 2023-09-20 DOI: 10.2221/jcsj.58.234
Satoshi AWAJI
{"title":"特集「高圧ガス保安法改正及び関連冷凍機技術」によせて","authors":"Satoshi AWAJI","doi":"10.2221/jcsj.58.234","DOIUrl":"https://doi.org/10.2221/jcsj.58.234","url":null,"abstract":"","PeriodicalId":15559,"journal":{"name":"Journal of Cryogenics and Superconductivity Society of Japan","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136265923","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
青木五男様を偲んで 追念青木五男
Journal of Cryogenics and Superconductivity Society of Japan Pub Date : 2023-09-20 DOI: 10.2221/jcsj.58.252
一弘 柁川, 泰晴 上岡, 隆暢 木須, 錫範 金, 知子 筑本, 作太郎 山口, 茂 吉田
{"title":"青木五男様を偲んで","authors":"一弘 柁川, 泰晴 上岡, 隆暢 木須, 錫範 金, 知子 筑本, 作太郎 山口, 茂 吉田","doi":"10.2221/jcsj.58.252","DOIUrl":"https://doi.org/10.2221/jcsj.58.252","url":null,"abstract":"","PeriodicalId":15559,"journal":{"name":"Journal of Cryogenics and Superconductivity Society of Japan","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136264031","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
核融合発電実現へ向けた超電導工学への期待 实现核聚变发电对超导工程的期待
Journal of Cryogenics and Superconductivity Society of Japan Pub Date : 2023-09-20 DOI: 10.2221/jcsj.58.233
Yasuhiko TAKEIRI
{"title":"核融合発電実現へ向けた超電導工学への期待","authors":"Yasuhiko TAKEIRI","doi":"10.2221/jcsj.58.233","DOIUrl":"https://doi.org/10.2221/jcsj.58.233","url":null,"abstract":"","PeriodicalId":15559,"journal":{"name":"Journal of Cryogenics and Superconductivity Society of Japan","volume":"161 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136265919","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Development of Magnetic Separation System with Superconducting Magnet for Thermal Power Plants 为火力发电厂开发带超导磁体的磁分离系统
Journal of Cryogenics and Superconductivity Society of Japan Pub Date : 2020-05-20 DOI: 10.2221/jcsj.55.179
H. Okada, N. Hirota, Y. Akiyama, F. Mishima, S. Nishijima, H. Matsuura, T. Yamaji, S. Namba, T. Sekine
{"title":"Development of Magnetic Separation System with Superconducting Magnet for Thermal Power Plants","authors":"H. Okada, N. Hirota, Y. Akiyama, F. Mishima, S. Nishijima, H. Matsuura, T. Yamaji, S. Namba, T. Sekine","doi":"10.2221/jcsj.55.179","DOIUrl":"https://doi.org/10.2221/jcsj.55.179","url":null,"abstract":"Synopsis: The development of magnetic separation systems for thermal power plants, including our recent studies, are reviewed. The magnetic separation systems reduce the scale in boiler feed water in thermal power plants and maintain energy conversion efficiency at a high level, reducing the amount of carbon dioxide discharged from thermal power plants.","PeriodicalId":15559,"journal":{"name":"Journal of Cryogenics and Superconductivity Society of Japan","volume":"15 10","pages":"179-184"},"PeriodicalIF":0.0,"publicationDate":"2020-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141203934","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
無絶縁REBCO パンケーキ・コイルにおける数値解析技術 无绝缘REBCO薄煎饼线圈中的数值分析技术
Journal of Cryogenics and Superconductivity Society of Japan Pub Date : 2019-03-20 DOI: 10.2221/JCSJ.54.103
聡一 野口, 浩史 植田, 敦士 石山
{"title":"無絶縁REBCO パンケーキ・コイルにおける数値解析技術","authors":"聡一 野口, 浩史 植田, 敦士 石山","doi":"10.2221/JCSJ.54.103","DOIUrl":"https://doi.org/10.2221/JCSJ.54.103","url":null,"abstract":"","PeriodicalId":15559,"journal":{"name":"Journal of Cryogenics and Superconductivity Society of Japan","volume":"13 1","pages":"103-110"},"PeriodicalIF":0.0,"publicationDate":"2019-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87628780","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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