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Takei, Hayanori
Isotope News, (779), p.11 - 15, 2022/02
The Japan Atomic Energy Agency (JAEA) has designed a Transmutation Physics Experimental Facility (TEF-P) as an experimental facility in the Japan Proton Accelerator Research Complex (J-PARC). The TEF-P is a critical assembly driven by a low-power proton beam, a maximum of 10 W, which is extracted from a high-power beam source, such as 250 kW of 400 MeV proton beam of the J-PARC Linac. To extract such a low-power proton beam from the high-power proton beam, we developed a laser charge exchange (LCE) device and employed its technique, which is one of the non-contact beam extraction techniques. For the proof of performance of the LCE device to the TEF-P, a low-power proton beam was extracted using a negative-hydrogen Linac having an energy of 3 MeV, and a bright laser. This paper summarizes the experimental results.
Harada, Hiroyuki; Saha, P. K.; Yamane, Isao*; Kato, Shinichi; Kinsho, Michikazu; Irie, Yoshiro*
Proceedings of 13th Annual Meeting of Particle Accelerator Society of Japan (Internet), p.983 - 986, 2016/11
The high-intensity proton accelerator adopts a charge exchange injection scheme, which injects with exchanging from negative Hydrogen ion to proton by using carbon foil. This scheme can realize high intensity proton beam but the uncontrolled beam losses are caused by scattering between beams and the foil. Additionally, the collision may occur the foil beak. Therefore, a new injection scheme for higher intensity is needed as an alternative to the foil. In the J-PARC 3GeV RCS, we newly propose and develop a laser stripping injection scheme However, it is necessary that laser power is two order higher than latest laser one. To realize this big issue, we develop the laser storage ring, which can provide laser pulse of high repetition rate by recycling one. In this presentation, we will introduce the laser stripping injection scheme and describe the concept of the laser storage ring with high repetition rate.
Daido, Hiroyuki; Yamakawa, Koichi; Yamagiwa, Mitsuru; Arisawa, Takashi; Kato, Yoshiaki; Noda, Akira*; Uesaka, Mitsuru*; Ogata, Atsushi*; Matsukado, Koji*
Proceedings of 4th Symposium on Accelerator and Related Technology for Application, p.111 - 112, 2001/10
no abstracts in English
Yamauchi, Toshihiko; ; ; *
Purazuma, Kaku Yugo Gakkai-Shi, 72(7), p.692 - 705, 1996/00
no abstracts in English
Toyama, Shinichi*; Ishigami, Ryoya*
no journal, ,
Performing the cutting technology development of the large structures such as the nuclear reactors using the high power 30kW fiber laser. Aiming at the introduction to domestic nuclear reactor decommissioning, contribution to accident convergence of the Fukushima first Nuclear Power Plant, it is intended that we plan applications to repair, the dismantling of industry, the deterioration infrastructure.
