Recent progress in the energy recovery linac project in Japan

Sakanaka, Shogo*; Akemoto, Mitsuo*; Aoto, Tomohiro*; Arakawa, Dai*; Asaoka, Seiji*; Enomoto, Atsushi*; Fukuda, Shigeki*; Furukawa, Kazuro*; Furuya, Takaaki*; Haga, Kaiichi*; et al.

Proceedings of 1st International Particle Accelerator Conference (IPAC '10) (Internet), p.2338 - 2340, 2010/05

http://accelconf.web.cern.ch/AccelConf/IPAC10/papers/tupe091.pdf

Future synchrotron light source using a 5-GeV energy recovery linac (ERL) is under proposal by our Japanese collaboration team, and we are conducting R&D efforts for that. We are developing high-brightness DC photocathode guns, two types of cryomodules for both injector and main superconducting (SC) linacs, and 1.3 GHz high CW-power RF sources. We are also constructing the Compact ERL (cERL) for demonstrating the recirculation of low-emittance, high-current beams using above-mentioned critical technologies.

Design of a 500kV electron gun for ERL light source at KEK

Yamamoto, Masahiro*; Honda, Yosuke*; Miyajima, Tsukasa*; Uchiyama, Takashi*; Kobayashi, Masanori*; Muto, Toshiya*; Matsuba, Shunya*; Sakanaka, Shogo*; Sato, Kotaro*; Saito, Yoshio*; et al.

Proceedings of 6th Annual Meeting of Particle Accelerator Society of Japan (CD-ROM), p.860 - 862, 2009/08

A newly 500 kV electron gun (2nd - 500 kV gun) for an ERL light source is designed at KEK. A new concept and state of-the-art technologies of vacuum system, ceramic insulators, high voltage power supply, photocathode and preparation system will be employed. The details are described in this report.

Progress in R&D efforts on the energy recovery linac in Japan

Sakanaka, Shogo*; Ago, Tomonori*; Enomoto, Atsushi*; Fukuda, Shigeki*; Furukawa, Kazuro*; Furuya, Takaaki*; Haga, Kaiichi*; Harada, Kentaro*; Hiramatsu, Shigenori*; Honda, Toru*; et al.

Proceedings of 11th European Particle Accelerator Conference (EPAC '08) (CD-ROM), p.205 - 207, 2008/06

Future synchrotron light sources based on the energy-recovery linacs (ERLs) are expected to be capable of producing super-brilliant and/or ultra-short pulses of synchrotron radiation. Our Japanese collaboration team is making efforts for realizing an ERL-based hard X-ray source. We report recent progress in our R&D efforts.

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Hayashi, Shotaro; Kishimoto, Yoichiro; Kawata, Tomio*; *; *

PNC TN8410 88-039, 58 Pages, 1988/09

PNC-TN8410-88-039.pdf:1.76MB

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Hayashi, Shotaro; Kishimoto, Yoichiro; Kawata, Tomio*

PNC TN8410 88-011, 89 Pages, 1988/02

PNC-TN8410-88-011.pdf:1.91MB

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FBR reprocessing experiments at CPF, 15

Kishimoto, Yoichiro; Kawata, Tomio*; Ouchi, Jin; *; Sanyoshi, Hirotaka*; ; *

PNC TN8410 88-004, 123 Pages, 1987/12

PNC-TN8410-88-004.pdf:3.95MB

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FBR fuel reprocessing pulsed colum test; Evaluation of operation parameter for strip in pulsed column

Kishimoto, Yoichiro; Kawata, Tomio*; Hayashi, Shotaro; Nemoto, Shinichi; Kitamura, Koichiro

PNC TN8410 87-084, 144 Pages, 1987/06

PNC-TN8410-87-084.pdf:26.46MB

no abstracts in English

Studies on the partitioning of high level liquid waste; Extraction of transuranium and fission products with DBBP, TBP, D2EHPA and D/M2EHPA (mixed solvent)

Kishimoto, Yoichiro; Kawata, Tomio*; *

PNC TN8410 87-08, 125 Pages, 1987/05

PNC-TN8410-87-08.pdf:2.04MB

This paper is to present the technology developed in WTL, PNC for the partitioning of actinides in High Level Liquid Waste (HLLW) from nuclear fuel reprocessing plant. Partitioning experiments were primarily made with the batch extraction method, and the counter current continuous extraction method was also examined by using a laboratory scale mixer-settler. Extractants used were Dibutylbutyl Phosphonate (DBBP), Tri-n-butyl Phosphate (TBP), Di (2-ethylhexyl) Phosphoric Acid (D2EHPA) and Di-Mono (2-ethylhexyl) Phosporic Acid mixture (D/M2EHPA, mol ratio D/M=1/1). Other studies were made of the reduction of Pu (IV) or Fe (III) by hydrazine in the nitric acid solution with the active charcoal catalyst. Further studies were also made of the effect of the lactic acid addition on the extraction of Pu (IV) and U (VI) by TBP. The results from the batch extraction of Am (III), Eu(III), and Ce(III) in the DBBP, TBP, D2EHPA or D/M2EHPA-HNO-M (NO) systems showed the linear relationship between log (E/ORG) vs. log (NO) aq and log E vs. log (H)aq. The apparent equilibrium constants (Km) of 1.10 (Am-DBBP), 1.26 (Eu-DBBP), 1.22(Ce-DBBP), 0.0352(Am-TBP), 0.0549(Eu-TBP), 0.0312(Ce-TBP), 0.845(Am-D2EHPA), 22(Am-D/M2EHPA), 22.7(Eu-D/M2EHPA) and 18.7(Ce-D/M2EHPA) were obtained from there relationships. For the reduction of Pu (IV) and Fe (III) in the HNO-hydrazine-active chacoal catalyst system, a good linearity between the reaction ratio and the reduction time was observed, and the reaction was apparently of the first order. The reduction rates of Pu (IV) and Fe (III) in this system were significantly increased by 300 times that observed in the system without the active chacoal catalyst. The addition of lactic acid to the system of HNO-U-Pu-TBP lowered the extractability of Pu (IV) to TBP, and the distribution coefficient of Pu (IV), for example, was in the vicinity of that for Pu (III) in the 0.5N HNO-0.3M lactic acid soluti

FBR fuels reprocessing experiments at CPF(13)

Ouchi, Jin; Sanyoshi, Hirotaka*; ; Kishimoto, Yoichiro; Kawata, Tomio*; ; *; *

PNC TN8410 87-011, 253 Pages, 1987/01

PNC-TN8410-87-011.pdf:5.38MB

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Kishimoto, Yoichiro; Kawata, Tomio*; Hayashi, Shotaro; *; Tanaka, Mutsuo

PNC TN8410 87-080, 42 Pages, 1986/12

PNC-TN8410-87-080.pdf:1.32MB

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