Present status of fast ignition realization experiment and inertial fusion energy development

Azechi, H.; Mima, K.; Shiraga, S.; Fujioka, Shinsuke; Nagatomo, Hideo; Johzaki, Tomoyuki; Jitsuno, Takahisa; Key, M.H.; Kodama, R.; Koga, Mayuko; Kondo, K.; Kawanaka, Junji; Miyanaga, Noriaki; Murakami, M.; Nagai, Keiji; Nakai, M.; Nakamura, Hideya; Nakamura, Tomoo; Nakazato, Tomoharu; Nakao, Yasuyuki; Nishihara, Katsunobu; Nishimura, Hiroaki; Norimatsu, T.; Norreys, P.; Ozaki, T.; Pasley, J.; Sakagami, Hiroyuki; Sakawa, Y.; Sarukura, Nobuhiko; Shigemori, K.; Shimizu, Toshihiko; Sunahara, A.; Taguchi, Toshihiro; Tanaka, K. A.; Tsubakimoto, Koji; Fujimoto, Yasushi; Homma, Hiroomi; Iwamoto, A.

doi:10.1088/0029-5515/53/10/104021

Cited by 28 publications

(18 citation statements)

References 17 publications

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“…The Laser for Fast Ignition EXperiment (LFEX) is designed to have a 1 ps rise time and 2 × 2 segmented dielectric gratings. Commissioning started in 2005 and delivered petawatt operation in 2010 [93] , with full operational capability expected by the end of 2014 [94] . The beam is focused to target by a 4 m off-axis parabola, giving a spot of 30-60 µm in a 5 kJ beam in 1-20 ps, providing powers of 1-5 PW (although final specification is to deliver 10 kJ).…”

Section: Multi-kj Glass Systemsmentioning

confidence: 99%

Petawatt class lasers worldwide

Danson

Hillier

Hopps

et al. 2015

High Pow Laser Sci Eng

480

318

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The use of ultra-high intensity laser beams to achieve extreme material states in the laboratory has become almost routine with the development of the petawatt laser. Petawatt class lasers have been constructed for specific research activities, including particle acceleration, inertial confinement fusion and radiation therapy, and for secondary source generation (x-rays, electrons, protons, neutrons and ions). They are also now routinely coupled, and synchronized, to other large scale facilities including megajoule scale lasers, ion and electron accelerators, x-ray sources and z-pinches. The authors of this paper have tried to compile a comprehensive overview of the current status of petawatt class lasers worldwide. The definition of 'petawatt class' in this context is a laser that delivers >200 TW.

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Section: Multi-kj Glass Systemsmentioning

confidence: 99%

Petawatt class lasers worldwide

Danson

Hillier

Hopps

et al. 2015

High Pow Laser Sci Eng

480

318

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“…We consider that this kind of deformable mirror can be used in the laser facilities of MJ level. At present our bimorph deformable mirror is already installed in the laser complex LFEX in Japan [14] , where the value of the output beam power of 2 PW at 1 ps pulse duration was obtained.…”

Section: Wavefront Correction Of a High-power Laser Beammentioning

confidence: 99%

Wide aperture piezoceramic deformable mirrors for aberration correction in high-power lasers

Samarkin

Alexandrov

Borsoni³

et al. 2016

High Pow Laser Sci Eng

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The deformable mirror with the size of 410 mm × 468 mm controlled by the bimorph piezoceramic plates and multilayer piezoceramic stacks was developed. The results of the measurements of the response functions of all the actuators and of the surface shape of the deformable mirror are presented in this paper. The study of the mirror with a Fizeau interferometer and a Shack-Hartmann wavefront sensor has shown that it was possible to improve the flatness of the surface down to a residual roughness of 0.033 µm (RMS). The possibility of correction of the aberrations in high-power lasers was numerically demonstrated.

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“…Fast Ignition Realization Experiment project phase-I (FIREX-I) is being performed at Institute of Laser Engineering [1,2], Osaka University. In this project, the four-beam bundled high-energy petawatt laser (LFEX) is being operated [3].…”

Section: Introductionmentioning

confidence: 99%

Study of fast electron generation using multi beam of LFEX-class laser

Hata

Sakagami

Johzaki

et al. 2016

J. Phys.: Conf. Ser.

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Abstract. Fast Ignition Realization Experiment project phase-I (FIREX-I) is being performedat Institute of Laser Engineering, Osaka University. In this project, the four-beam bundled high-energy Petawatt laser (LFEX) is being operated. LFEX laser provides great multi-beam irradiation flexibility, with the possibility of arrange the pulses in temporal sequence, spatially separate them in distinct spots of focus them in a single spot. In this paper, we study the twobeam interference effects on high-intensity picosecond laser-plasma interaction (LPI) by twodimensional relativistic Particle-In-Cell simulations. The interference causes surface perturbation, which enhances laser absorption and underdense plasma generation, increasing the accelerated electron number and their slope temperature. The laser-to-electron energy conversion efficiency for two-beam interference case is suitable for Fast Ignition (FI) compared to the single beam case, but the increment of fast electron divergence leads to lower energy coupling. To optimize the target design for FI, these interference effects should be taken into consideration.

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Present status of fast ignition realization experiment and inertial fusion energy development

Cited by 28 publications

References 17 publications

Petawatt class lasers worldwide

Petawatt class lasers worldwide

Wide aperture piezoceramic deformable mirrors for aberration correction in high-power lasers

Study of fast electron generation using multi beam of LFEX-class laser

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