Electron-beam-pumped high-repetition-rate KrF laser system

Eiichi Takahashi; Isao Okuda; Yuji Matsumoto; Isao Matsushima; Susumu Kato; Kenji Kuwahara; Yoshiro Owadano

doi:10.1117/12.375130

11 January 2000 Electron-beam-pumped high-repetition-rate KrF laser system

Eiichi Takahashi, Isao Okuda, Yuji Matsumoto, Isao Matsushima, Susumu Kato, Kenji Kuwahara, Yoshiro Owadano

Proceedings Volume 3886, High-Power Lasers in Energy Engineering; (2000) https://doi.org/10.1117/12.375130
Event: Advanced High-Power Lasers and Applications, 1999, Osaka, Japan

Abstract

A repetition-rate electron beam pumped KrF laser amplifier is being built at the Electrotechnical Laboratory to develop the technologies required for an inertial confinement fusion energy driver. The pulsed power system of the prototype amplifier has already been competed and generates pulses of -300kV, 80ns with a repetition-rate of 1Hz. The high voltage electric short pulses are obtained by step-up pulse transformers, magnetic switches and a water dielectric pulse forming line instead of a conventional Marx generator with gap switches. One of the key technologies with this system is the cooling method of pressure and anode foils in a HIBACHI structure to increase those lifetimes. Our design adopts radiation and conduction as the main cooling processes and allows the foils to reach a high temperature. HAVAR and molybdenum are chosen as pressure and anode foil respectively instead of conventional titanium foils. The maximum temperature of the foils were numerically estimated to show the feasibility of the design.

Citation Download Citation

Eiichi Takahashi, Isao Okuda, Yuji Matsumoto, Isao Matsushima, Susumu Kato, Kenji Kuwahara, and Yoshiro Owadano "Electron-beam-pumped high-repetition-rate KrF laser system", Proc. SPIE 3886, High-Power Lasers in Energy Engineering, (11 January 2000); https://doi.org/10.1117/12.375130

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