| 发明名称 | Drift tube manufacturing method and drift tube | ||
| 摘要 | A drift tube manufacturing method and a drift tube which can reduce cost while securing an adequate level of particle beam focusing performance. The method includes: a magnet housing stage of housing a predetermined number of permanent magnets in a housing, which has a through-hole at a center part and an annular magnet housing space on an outer circumferential side of the through-hole; a welding stage of setting a lid for covering the opening part on the opening part; and welding the lid and the housing by laser beam welding. At least a surface of the housing and a surface of the lid are formed of copper. | ||
| 申请公布号 | US9029796(B2) | 申请公布日期 | 2015.05.12 |
| 申请号 | US201314047258 | 申请日期 | 2013.10.07 |
| 申请人 | Mitsubishi Heavy Industries, Ltd. | 发明人 | Okihira Kazunori;Higa Kyusaku;Inoue Fumiaki |
| 分类号 | G21K5/04;H05H7/22;B23K26/32;H05H9/04 | 主分类号 | G21K5/04 |
| 代理机构 | Wenderoth, Lind & Ponack, L.L.P. | 代理人 | Wenderoth, Lind & Ponack, L.L.P. |
| 主权项 | 1. A manufacturing method of a drift tube installed in a drift-tube-type accelerator, the method comprising: a stage of housing a predetermined number of permanent magnets in a magnet case; a magnet housing stage of fitting the magnet case with the predetermined number of permanent magnets in a housing, the housing having a through-hole at a center part and an annular magnet housing space on an outer circumferential side of the through-hole, wherein the magnet case is fitting in the housing from an opening part of the annular magnet housing space into the magnet housing space; and a welding stage of setting a lid for covering the opening part on the opening part, and welding the lid and the housing by laser beam welding, wherein at least a surface of the housing and a surface of the lid are formed of copper. | ||
| 地址 | Tokyo JP | ||