公开(公告)号：US3614422A

公开(公告)日：1971-10-19

申请号：US3614422D

申请日：1970-07-28

Applicant: HITACHI LTD

Inventor： MATSUI ISAO ,  MINAMIKAWA YOSHIHISA ,  KATAGIRI SHINJIRO

IPC: H01B11/20 ,  H01J37/24 ,  H01J37/248 ,  H01J37/26

CPC classification number: H01B11/206 ,  H01J37/243 ,  H01J37/248

Abstract: A resistance for adjusting the bias voltage is provided in a high voltage source, a high DC voltage being applied to the resistance, and the high DC voltage and bias voltage are applied to the filament and Wehnelt electrode, respectively, of an electron gun in an electron microscope through a high-voltage cable including two core lines whose resistance value is high enough to reduce surge voltage.

公开(公告)号：US3476972A

公开(公告)日：1969-11-04

申请号：US3476972D

申请日：1968-04-05

Applicant: HITACHI LTD

Inventor： KATAGIRI SHINJIRO ,  MINAMIKAWA YOSHIHISA

IPC: H01J3/02 ,  H01J9/50 ,  H01J29/86 ,  H01J1/02 ,  H01J9/02

CPC classification number: H01J29/865 ,  H01J3/028 ,  H01J9/50 ,  H01J2893/0072 ,  Y02W30/828

公开(公告)号：US3895254A

公开(公告)日：1975-07-15

申请号：US48433974

申请日：1974-06-28

Applicant: HITACHI LTD

Inventor： MINAMIKAWA YOSHIHISA ,  OZASA SUSUMU ,  KAMIMURA SHOJI ,  SAITO YASUSHI

IPC: G01Q90/00 ,  H01J37/04 ,  H01J37/06 ,  H01J37/248 ,  H05H5/02 ,  H01J29/96

CPC classification number: H01J37/06 ,  H01J37/248

Abstract: A charged particle accelerator wherein a receptacle surrounding an accelerating tube is made of an insulator, a grounded conductor layer is provided on the outside surface of the receptacle, at least one transformer is formed by opposing a primary coil on the outside and a secondary coil on the inside with the wall of the receptacle held therebetween, a conductor layer is provided on the inside surface of the receptacle at the transformer forming portion, a corona shield is provided at an end part of the inside conductor layer, and the induced voltage of the secondary coil is rectified and smoothed so as to apply the resultant voltage to a Wehnelt cylinder as a bias voltage. Thus, a continuously variable bias voltage can be obtained by regulating the applied voltage on the primary side of the transformer.

Abstract translation: 一种带电粒子加速器，其中围绕加速管的容器由绝缘体制成，接地导体层设置在插座的外表面上，至少一个变压器通过与外部的初级线圈相对而形成，次级线圈 在其间保持有插座壁的内部，在变压器形成部分的插座的内表面上设置导体层，在内部导体层的端部设置电晕屏蔽， 次级线圈被整流和平滑，以将所得到的电压作为偏置电压施加到Wehnelt气缸。 因此，可以通过调节变压器初级侧的施加电压来获得连续可变的偏置电压。