ERL2015 - List of Authors (Hajima, R.)

Paper

Title

Page

Design Work of the ERL-FEL as the High Intense EUV Light Source

4

N. Nakamura, S. Chen, T. Furuya, K. Haga, I. Hanyu, K. Harada, T. Honda, Y. Honda, E. Kako, Y. Kamiya, R. Kato, H. Kawata, Y. Kobayashi, T. Konomi, T. Kubo, S. Michizono, T. Miyajima, H. Nakai, T. Obina, K. Oide, H. Sakai, S. Sakanaka, M. Shimada, K. Tsuchiya, K. Umemori, M. Yamamoto
KEK, Ibaraki, Japan
R. Hajima, N. Nishimori
JAEA, Ibaraki-ken, Japan

Energy recovery linac(ERL)-based free electron lasers(FELs) are promising candidates for high-power EUV sources. They can recover most acceleration energy from the electron beams and greatly reduce the dumped beam power and activation compared with those based on ordinary linear accelerators. We have investigated a feasible design of a 10-kW class ERL-FEL operated at 13.5 nm for EUV lithography applications. In this talk, we will present the design work of the ERL-FEL as the high-power EUV source.

Slides MOPCTH010 [4.589 MB]

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TUIBLH1020

Operational Experience of DC Photoemission Gun at the Compact ERL

N. Nishimori
JAEA/FEL, Ibaraki-ken, Japan
R. Hajima, R. Nagai
JAEA, Ibaraki-ken, Japan
Y. Honda, X.J. Jin, T. Miyajima, T. Obina, T. Uchiyama, M. Yamamoto
KEK, Ibaraki, Japan
M. Kuriki
HU/AdSM, Higashi-Hiroshima, Japan

Beam commissioning of the compact ERL (cERL) has been performed since Apr. 2013 for the next generation ERL light source project (PEARL), and x-ray generation via laser Compton scattering was demonstrated recently. We will present two years operational experience and future upgrade plan of the DC photoemission gun at the cERL.

Slides TUIBLH1020 [10.603 MB]

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TUIBLH1021

Development of a 500 kV DC Gun with Narrow Gap

M. Yamamoto, Y. Honda, X.J. Jin, M. Kobayashi, T. Miyajima, T. Uchiyama
KEK, Ibaraki, Japan
R. Hajima, R. Nagai, N. Nishimori
JAEA, Ibaraki-ken, Japan
M. Kuriki
Hiroshima University, Graduate School of Science, Higashi-Hiroshima, Japan
H. Kurisu
Yamaguchi University, Ube-Shi, Japan

The second 500 kV DC gun with 70 mm anode-cathode gap has been constructed at KEK. In 2014, a high voltage conditioning up to 550 kV was carried out and a 500 kV test has been done more than 50 hours intermittently without any trips. The vacuum of the gun is achieved 6x10^-10 Pa during a 500 kV test by pumping NEGs and a bakable cryopump. A beam test has been started from the end of March 2015.

Slides TUIBLH1021 [2.466 MB]

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WEIBLH1050

Laser Compton Sources Based On Energy-Recovery Linacs

R. Hajima
JAEA, Ibaraki-ken, Japan

Funding: This work is supported in part by the MEXT grant for promoting technology for nuclear security and by the Photon and Quantum Basic Research Coordinated Development Program from the MEXT.
High-brightness and high-average current beams from energy-recovery linacs are ideal for laser Compton sources as well as synchrotron sources and FELs. We are proposing ERL-based Compton sources, which exceed existing sources in the brightness and flux. Such Compton sources can be applied to various industrial and scientific applications such as non-destructive assay of nuclear material, research of magnetic material with circularly polarized photons, nuclear transmutation, production of medical isotopes and so on. In the presentation, we describe results of proof-of-principle experiment at the Compact ERL and overview future applications.

Slides WEIBLH1050 [1.981 MB]

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THPTHL073

Development of a Multialkali Photocathode Preparation System

100

N. Nishimori, R. Hajima, R. Nagai, M. Sawamura
JAEA, Ibaraki-ken, Japan

We have developed a multialkali photocathode preparation system at JAEA for high current operation of DC photoemission gun. The system will be connected to a 250 kV – 50 mA gun for beam generation test. The status of development will be presented.

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Paper	Title	Page
MOPCTH010	Design Work of the ERL-FEL as the High Intense EUV Light Source	4
	N. Nakamura, S. Chen, T. Furuya, K. Haga, I. Hanyu, K. Harada, T. Honda, Y. Honda, E. Kako, Y. Kamiya, R. Kato, H. Kawata, Y. Kobayashi, T. Konomi, T. Kubo, S. Michizono, T. Miyajima, H. Nakai, T. Obina, K. Oide, H. Sakai, S. Sakanaka, M. Shimada, K. Tsuchiya, K. Umemori, M. Yamamoto KEK, Ibaraki, Japan R. Hajima, N. Nishimori JAEA, Ibaraki-ken, Japan
	Energy recovery linac(ERL)-based free electron lasers(FELs) are promising candidates for high-power EUV sources. They can recover most acceleration energy from the electron beams and greatly reduce the dumped beam power and activation compared with those based on ordinary linear accelerators. We have investigated a feasible design of a 10-kW class ERL-FEL operated at 13.5 nm for EUV lithography applications. In this talk, we will present the design work of the ERL-FEL as the high-power EUV source.
	Slides MOPCTH010 [4.589 MB]
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUIBLH1020	Operational Experience of DC Photoemission Gun at the Compact ERL
	N. Nishimori JAEA/FEL, Ibaraki-ken, Japan R. Hajima, R. Nagai JAEA, Ibaraki-ken, Japan Y. Honda, X.J. Jin, T. Miyajima, T. Obina, T. Uchiyama, M. Yamamoto KEK, Ibaraki, Japan M. Kuriki HU/AdSM, Higashi-Hiroshima, Japan
	Beam commissioning of the compact ERL (cERL) has been performed since Apr. 2013 for the next generation ERL light source project (PEARL), and x-ray generation via laser Compton scattering was demonstrated recently. We will present two years operational experience and future upgrade plan of the DC photoemission gun at the cERL.
	Slides TUIBLH1020 [10.603 MB]
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUIBLH1021	Development of a 500 kV DC Gun with Narrow Gap
	M. Yamamoto, Y. Honda, X.J. Jin, M. Kobayashi, T. Miyajima, T. Uchiyama KEK, Ibaraki, Japan R. Hajima, R. Nagai, N. Nishimori JAEA, Ibaraki-ken, Japan M. Kuriki Hiroshima University, Graduate School of Science, Higashi-Hiroshima, Japan H. Kurisu Yamaguchi University, Ube-Shi, Japan
	The second 500 kV DC gun with 70 mm anode-cathode gap has been constructed at KEK. In 2014, a high voltage conditioning up to 550 kV was carried out and a 500 kV test has been done more than 50 hours intermittently without any trips. The vacuum of the gun is achieved 6x10^-10 Pa during a 500 kV test by pumping NEGs and a bakable cryopump. A beam test has been started from the end of March 2015.
	Slides TUIBLH1021 [2.466 MB]
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WEIBLH1050	Laser Compton Sources Based On Energy-Recovery Linacs
	R. Hajima JAEA, Ibaraki-ken, Japan
	Funding: This work is supported in part by the MEXT grant for promoting technology for nuclear security and by the Photon and Quantum Basic Research Coordinated Development Program from the MEXT. High-brightness and high-average current beams from energy-recovery linacs are ideal for laser Compton sources as well as synchrotron sources and FELs. We are proposing ERL-based Compton sources, which exceed existing sources in the brightness and flux. Such Compton sources can be applied to various industrial and scientific applications such as non-destructive assay of nuclear material, research of magnetic material with circularly polarized photons, nuclear transmutation, production of medical isotopes and so on. In the presentation, we describe results of proof-of-principle experiment at the Compact ERL and overview future applications.
	Slides WEIBLH1050 [1.981 MB]
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THPTHL073	Development of a Multialkali Photocathode Preparation System	100
	N. Nishimori, R. Hajima, R. Nagai, M. Sawamura JAEA, Ibaraki-ken, Japan
	We have developed a multialkali photocathode preparation system at JAEA for high current operation of DC photoemission gun. The system will be connected to a 250 kV – 50 mA gun for beam generation test. The status of development will be presented.
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)