| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To switch various gas for flowing into an ion source as quick as possible. <P>SOLUTION: A gas injection system, for special particle beam therapy equipment, includes a first conduit for leading gas into an ion source, a second and a third conduits for two separated gas flows, and a multi-direction switching valve. The second and the third conduits open to an inlet of the multi-direction switching valve, the first conduit is connected with an outlet of the multi-direction switching valve. The multi-direction switching valve is formed so as one or the other inlet to be selectively connected with the outlet, thereby, the second or the third conduit is connected with the first conduit with a fluid technology. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
