公开(公告)号：US20010000702A1

公开(公告)日：2001-05-03

申请号：US09735192

申请日：2000-12-11

Applicant: United Technologies Corporation

Inventor： Brian E. Mensinger

IPC: H01J037/305 ,  H01J009/18

CPC classification number: H01J9/04 ,  H01J37/067

Abstract: A method includes providing an electron gun having a first head with a thermionic electron source and an accelerating electrode, and further includes replacing the first head with a second head having a power rating substantially different than that of the first head, and subsequently operating the electron gun without replacing the accelerating electrode. The electron gun may further include a platform spaced apart from the accelerating electrode and having an adjustably located locating member that engages a reference member on the head to position the head in three dimensions relative to the accelerating electrode. The platform may be adjustably spaced from the accelerating electrode in order vary the distance between the electron source and the accelerating electrode.

Abstract translation: 一种方法包括提供一种电子枪，其具有带有热离子电子源和加速电极的第一头，还包括用具有基本上不同于第一头的功率额定值的第二头替换第一头，随后操作电子 而不需要更换加速电极。 电子枪还可以包括与加速电极间隔开的平台，并且具有可调节定位的定位构件，该定位构件与头部上的参考构件接合，以相对于加速电极在三维位置定位头部。 平台可以与加速电极可调节地间隔开，以便改变电子源和加速电极之间的距离。