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

H. Hama; F. Hinode; K. Shinto; A. Miyamoto; T. Tanaka

doi:10.1016/j.nima.2004.04.083

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

H. Hama, F. Hinode, K. Shinto, A. Miyamoto, T. Tanaka

Research Center for Electron Photon Science (ELPH)

Tohoku University

Research output: Contribution to journal › Conference article › peer-review

19 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	371-377
Number of pages	7
Journal	Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume	528
Issue number	1-2
DOIs	https://doi.org/10.1016/j.nima.2004.04.083
Publication status	Published - 2004 Aug 1
Event	Proceedings of the 25th International Free Electron Laser - Tsukuba,Ibaraki, Japan Duration: 2003 Sept 8 → 2003 Sept 12

Keywords

Backbombardment
FDTD method
Thermionic RF gun

Access to Document

10.1016/j.nima.2004.04.083

Cite this

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title = "3-D simulation study for a thermionic RF gun using an FDTD method",

abstract = "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.",

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note = "Proceedings of the 25th International Free Electron Laser ; Conference date: 08-09-2003 Through 12-09-2003",

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T1 - 3-D simulation study for a thermionic RF gun using an FDTD method

AU - Hama, H.

AU - Hinode, F.

AU - Shinto, K.

AU - Miyamoto, A.

AU - Tanaka, T.

PY - 2004/8/1

Y1 - 2004/8/1

N2 - 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.

AB - 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.

KW - Backbombardment

KW - FDTD method

KW - Thermionic RF gun

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EP - 377

JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

IS - 1-2

T2 - Proceedings of the 25th International Free Electron Laser

Y2 - 8 September 2003 through 12 September 2003

ER -

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

Abstract

Keywords

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