Upgrade of repetitive fast-heating fusion driver HAMA to implode a shell target by using diode pumped solid state laser
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Authors
Mori, Yoshitaka
Sekine, Takashi
Komeda, Osamu
Nishimura, Yasuhiko
Sunahara, Atsushi
Miura, Eisuke
Nakayama, Suisei
Hanayama, Ryohei
Ishii, Katsuhiro
Sato, Nakahiro
Issue Date
2016
Type
Article
Language
Keywords
generation
Alternative Title
Abstract
The HAMA is 1-Hz fast heating fusion driver pumped by a 10 J second-harmonic of diode-pumped Nd:glass laser: KURE-1. We have upgraded HAMA to realize an implosion of spherical shell target by using a remaining fundamental beam from KURE-1. This beam of 6 J/1 Hz is transported to the current counter irradiation system. The resulting beam includes three pulses in sequence: 2.2 J/15 ns and 0.7 J/300 ps for implosion, and 0.5 J/190 fs for heating. We estimate the implosion dynamics from 1-D radiation hydrodynamic code (START 1D). It indicates a possibility of tailored-pulse implosion by optimizing the beam spot sizes of imploding beams on the target surface. This upgrade leads to a demonstration of repetitive implosion and additional heating of a spherical shell target in accordance with a repetition of laser operation and that of a target injection system.
Description
Citation
Yoshitaka MORI et al 2016 J. Phys.: Conf. Ser. 688 012070
Publisher
License
Creative Commons Attribution 3.0 Unported
Journal
Volume
Issue
PubMed ID
ISSN
1742-6588