Development of 500 kV Linac-TEM

Yukinori Nagatani^a, Yoshihiro Arai^b, Takumi Sannomiya^c, Tadao Shirai^d, Ryuzo Aihara^e, Giichi Iijima^b and Kuniaki Nagayama^f

^aNational Institute for Physiological Sciences
^bTerabase Inc.
^cTokyo Institute of Technology
^dR.T.S.
^eAihara Industry

Abstract: The goal of the project is a contraction of a high-voltage transmission electron microscopy (TEM) by employing technologies of linear-accelerators driven by microwaves, which allow us to realize a compact and low-cost high-voltage TEM. The energy-spread of the beams by linear-accelerators is too large to utilize for TEMs directly, because the beams are accelerated by alternating electric field in resonance-cavities of microwaves. In this paper, we report several technologies, including RF-choppers, to solve the problems.

Key words: High Voltage TEM, Linear Accelerator