| 7T动物磁共振成像超导磁体的漏热分析 |
| |
| 引用本文： | 刘思远,蒋晓华. 7T动物磁共振成像超导磁体的漏热分析[J]. 低温与超导, 2012, 40(11): 1-5. DOI: 10.3969/j.issn.1001-7100.2012.11.001 |
| |
| 作者姓名： | 刘思远 蒋晓华 |
| |
| 作者单位： | 1.清华大学电机工程与应用电子技术系,北京,100084;2.清华大学电机工程与应用电子技术系,北京,100084 |
| |
| 基金项目： | 国家863高技术基金项目(2006AA020802) |
| |
| 摘 要： | 准确计算分析超导磁体低温系统的漏热量,是评价超导磁体低温绝热性能的重要依据.文中以一台自制的7T磁共振成像系统(MRI)的超导磁体作为研究对象,对其低温系统进行了详细的漏热计算,分别得到了液氦容器和液氮容器的理论漏热量.将计算结果与实测数据进行比较,分析了磁体实际的低温性能.
|
| 关 键 词： | 超导磁体 低温系统 漏热分析 多层绝热 |
Heat losses analysis of a 7T superconducting magnet for animal MRI |
| |
| Liu Siyuan,Jiang Xiaohua. Heat losses analysis of a 7T superconducting magnet for animal MRI[J]. Cryogenics and Superconductivity, 2012, 40(11): 1-5. DOI: 10.3969/j.issn.1001-7100.2012.11.001 |
| |
| Authors: | Liu Siyuan Jiang Xiaohua |
| |
| Affiliation: | (Department of Electrical Engineering,Tsinghua University,Beijing 100084,China) |
| |
| Abstract: | Heat losses analysis of the cryostat in a superconducting magnet system has great reference value to evaluate its cryogenic insulation performance.The heat transfer of a 7T MRI superconducting magnet was analyzed,and then the heat losses of the liquid helium container and liquid nitrogen container respectively were calculated.Compared with the measured data,the actual cryogenic performance of the magnet was further analyzed in the last part of the article. |
| |
| Keywords: | Superconducting magnet Cryostat Heat loss analysis Multilayer insulation |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
