3-D simulation study for a thermionic RF gun using an FDTD method

被引：6

作者：

Hama, H ^{[1
]}

Hinode, F ^{[1
]}

Shinto, K ^{[1
]}

Miyamoto, A ^{[1
]}

Tanaka, T ^{[1
]}

机构：

[1] Tohoku Univ, Grad Sch Sci, Nucl Sci Lab, Taihaku Ku, Sendai, Miyagi 9820826, Japan

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2004年 / 528卷 / 1-2期

关键词：

thermionic RF gun; FDTD method; backbombardment;

D O I：

10.1016/j.nima.2004.04.083

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Beam dynamics in a thermionic RF gun for a new pre-injector in a future synchrotron radiation facility at Tohoku university has been studied by developing a 3-D Maxwell's equation solver. Backbombardment (BB) effect on a cathode, which is a crucial problem for performance of the thermionic RF gun, has been investigated. It is found that an external dipole magnetic field applying around the cathode is effective to reduce high-energy backstreaming electrons from the accelerating cell. However, the low-energy electrons coming back from the first cell inevitably hit the cathode, so that characteristics of the cathode material seems to be crucial for reduction of the BB effect. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：371 / 377

页数：7

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