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Akademický článek

Three-dimensional dynamics of fluctuations appearing during pellet ablation process around a pellet in a fusion plasma experiment

Publikováno v: Scientific Reports, Vol 12, Iss 1, Pp 1-9 (2022)

Abstract Understanding pellet ablation physics is crucial to realizing efficient fueling into a high temperature plasma for the steady state operation of ITER and future fusion reactors. Here we report the first observation of the formation of fluctu

Externí odkaz: https://doaj.org/article/712bc6df046d410c853512ccfb72aa93

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Akademický článek

Effects of the resonance modification by electron cyclotron current drive on the linear and nonlinear dynamics of energetic particle driven magnetohydrodynamics modes in Heliotron J

Autor: P. Adulsiriswad, Y. Todo, S. Yamamoto, S. Kado, S. Kobayashi, S. Ohshima, H. Okada, T. Minami, Y. Nakamura, A. Ishizawa, S. Konoshima, T. Mizuuchi, K. Nagasaki

Publikováno v: Nuclear Fusion, Vol 64, Iss 1, p 016036 (2023)

This study investigates the effects of electron cyclotron current drive (ECCD) on the linear and nonlinear dynamics of energetic-particle (EP)-driven magnetohydrodynamics (MHD) instability (mode) in Heliotron J (HJ), using MEGA, a nonlinear hybrid EP

Externí odkaz: https://doaj.org/article/48d2b1fd5d6f491d917cf052f428bf4b

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Akademický článek

Estimation of three-dimensional structure on peripheral fluctuation using fast camera images and magnetic field calculation in Heliotron J

Autor: N. Nishino, T. Mizuuchi, H. Okada, S. Ohshima, S. Kobayashi, T. Minami, S. Kado, S. Yamamoto, K. Nagasaki, H. Kawazome

Publikováno v: Nuclear Materials and Energy, Vol 20, Iss , Pp - (2019)

In Heliotron J, peripheral plasma fluctuation and/or turbulence have been measured by using a fast camera for over 10 years. Many image data are provided as two-dimensional information of time series by a fast camera, and they represent the spatial s

Externí odkaz: https://doaj.org/article/470b85e182964c99a4de7a3905641c6c

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Akademický článek

The Effect of the Parameters of a Vibration-Based Impact Mode Piezoelectric Power Generator

Autor: Amat A. Basari, S. Awaji, S. Sakamoto, S. Hashimoto, B. Homma, K. Suto, H. Okada, H. Okuno, K. Kobayashi, S. Kumagai

Publikováno v: Shock and Vibration, Vol 2015 (2015)

This study reports the effects of the parameters of a vibration-based impact mode piezoelectric power generator. First, an evaluation of the effects of the impact parameters, the mass, and the impact velocity is presented. It is found that the output

Externí odkaz: https://doaj.org/article/ccff9589a1854219b7a813e8b6c7a06b

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Akademický článek

Measured and simulated transport of 1.9 MeV laser-accelerated proton bunches through an integrated test beam line at 1 Hz

Publikováno v: Physical Review Special Topics. Accelerators and Beams, Vol 13, Iss 7, p 071304 (2010)

A laser-driven repetition-rated 1.9 MeV proton beam line composed of permanent quadrupole magnets (PMQs), a radio frequency (rf) phase rotation cavity, and a tunable monochromator is developed to evaluate and to test the simulation of laser-accelerat

Externí odkaz: https://doaj.org/article/27668c4061334ea7838d3ca1a7513367

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