Generation of a 500-keV electron beam from a high voltage photoemission gun

Nobuyuki Nishimori; Ryoji Nagai; Shunya Matsuba; Ryoichi Hajima; Masahiro Yamamoto; Tsukasa Miyajima; Yosuke Honda; Hokuto Iijima; Masao Kuriki; Makoto Kuwahara

doi:10.1063/1.4811158

Generation of a 500-keV electron beam from a high voltage photoemission gun

Nobuyuki Nishimori, Ryoji Nagai, Shunya Matsuba, Ryoichi Hajima, Masahiro Yamamoto, Tsukasa Miyajima, Yosuke Honda, Hokuto Iijima, Masao Kuriki, Makoto Kuwahara

Research output: Contribution to journal › Article › peer-review

27 Citations (Scopus)

Abstract

High-brightness, high-current electron guns for energy recovery linac light sources and high repetition rate X-ray free-electron lasers require an exit beam energy of ≥ 500 keV to reduce space-charge induced emittance growth in the drift space from the gun exit to the following superconducting accelerator entrance. At the Japan Atomic Energy Agency, we have developed a DC photoemission gun employing a segmented insulator to mitigate the field emission problem, which is a major obstacle for operation of DC guns at ≥ 500 kV. The first demonstration of generating a 500-keV electron beam with currents up to 1.8 mA is presented.

Original language	English
Article number	234103
Journal	Applied Physics Letters
Volume	102
Issue number	23
DOIs	https://doi.org/10.1063/1.4811158
Publication status	Published - 2013 Jun 10

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.4811158

Cite this

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title = "Generation of a 500-keV electron beam from a high voltage photoemission gun",

abstract = "High-brightness, high-current electron guns for energy recovery linac light sources and high repetition rate X-ray free-electron lasers require an exit beam energy of ≥ 500 keV to reduce space-charge induced emittance growth in the drift space from the gun exit to the following superconducting accelerator entrance. At the Japan Atomic Energy Agency, we have developed a DC photoemission gun employing a segmented insulator to mitigate the field emission problem, which is a major obstacle for operation of DC guns at ≥ 500 kV. The first demonstration of generating a 500-keV electron beam with currents up to 1.8 mA is presented.",

author = "Nobuyuki Nishimori and Ryoji Nagai and Shunya Matsuba and Ryoichi Hajima and Masahiro Yamamoto and Tsukasa Miyajima and Yosuke Honda and Hokuto Iijima and Masao Kuriki and Makoto Kuwahara",

note = "Funding Information: We would like to thank Dr. M. Shinn, Dr. S. Benson, and Dr. G. Neil at Jefferson Lab FEL for useful discussion on lightbox system. This work was supported by the MEXT Quantum Beam Technology Program and was partially supported by JSPS Grants-in-Aid for Scientific Research in Japan (23540353).",

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doi = "10.1063/1.4811158",

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T1 - Generation of a 500-keV electron beam from a high voltage photoemission gun

AU - Nishimori, Nobuyuki

AU - Nagai, Ryoji

AU - Matsuba, Shunya

AU - Hajima, Ryoichi

AU - Yamamoto, Masahiro

AU - Miyajima, Tsukasa

AU - Honda, Yosuke

AU - Iijima, Hokuto

AU - Kuriki, Masao

AU - Kuwahara, Makoto

N1 - Funding Information: We would like to thank Dr. M. Shinn, Dr. S. Benson, and Dr. G. Neil at Jefferson Lab FEL for useful discussion on lightbox system. This work was supported by the MEXT Quantum Beam Technology Program and was partially supported by JSPS Grants-in-Aid for Scientific Research in Japan (23540353).

PY - 2013/6/10

Y1 - 2013/6/10

N2 - High-brightness, high-current electron guns for energy recovery linac light sources and high repetition rate X-ray free-electron lasers require an exit beam energy of ≥ 500 keV to reduce space-charge induced emittance growth in the drift space from the gun exit to the following superconducting accelerator entrance. At the Japan Atomic Energy Agency, we have developed a DC photoemission gun employing a segmented insulator to mitigate the field emission problem, which is a major obstacle for operation of DC guns at ≥ 500 kV. The first demonstration of generating a 500-keV electron beam with currents up to 1.8 mA is presented.

AB - High-brightness, high-current electron guns for energy recovery linac light sources and high repetition rate X-ray free-electron lasers require an exit beam energy of ≥ 500 keV to reduce space-charge induced emittance growth in the drift space from the gun exit to the following superconducting accelerator entrance. At the Japan Atomic Energy Agency, we have developed a DC photoemission gun employing a segmented insulator to mitigate the field emission problem, which is a major obstacle for operation of DC guns at ≥ 500 kV. The first demonstration of generating a 500-keV electron beam with currents up to 1.8 mA is presented.

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Generation of a 500-keV electron beam from a high voltage photoemission gun

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