High energy laser wakefield acceleration

Issue title: Proceedings of the tenth International Symposium on Applied Electromagnetics and Mechanics ISEM-Tokyo

Article type: Research Article

Authors: Kotaki, Hideyuki^{a; b; *} | Kando, Masaki^a | Hosokai, Tomonao^a | Kondo, Shuji^a | Masuda, Shinichi^a | Kanazawa, Shuhei^a | Yokoyama, Takashi^a | Matoba, Toru^a | Nakajima, Kazuhisa^{a; b; c}

Affiliations: [a] Japan Atomic Energy Research Institute, Kizu, Kyoto, 619-0215, Japan | [b] The Graduate University for Advanced Studies, Hayama, Kanagawa, 240-0193, Japan | [c] High Energy Accelerator Research Organization, Tsukuba, Ibaraki, 305-0801, Japan

Correspondence: [*] Corresponding author: Hideyuki Kotaki, Tel.: +81 774 71 3381; Fax: +81 774 71 3316; E-mail: kotaki@apr.jaeri.go.jp

Abstract: Laser wakefield acceleration (LWFA) experiment using 100TW laser is planned at JAERI-Kansai. High quality short pulse electron beams and the precise electron-laser synchronization are necessary to accelerate the electron beam by the laser. A microtron with a photocathode rf-gun was developed as a high quality electron injector. The quantum efficiency(QE) of the photocathode was measured to be 2 × 10^{-5}. Emittance and a pulse width of the electron beams were 6π mm-mrad and 10ps, respectively. In order to produce a short pulse electron beam, and to synchronize between the electron beam and the laser pulse, the inverse free electron laser (IFEL) is planed. A gas jet was set up and a density of the gas was measured by Mach-Zehnder interferometer. In order to overcome a short acceleration length of the LWFA, the Z-pinch plasma waveguide has been developed for 1 GeV laser wakefield acceleration.

DOI: 10.3233/JAE-2002-383

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 14, no. 1-4, pp. 255-262, 2002