Results 71 to 80 of about 6,012 (210)

Optimizing Radiation Shielding for Fusion Maintenance Facilities: Insights From a Comprehensive Analysis of ITER Hot Cell

International Journal of Energy Research, Volume 2025, Issue 1, 2025.
One of the primary goals of the ITER project is to demonstrate the safety characteristics of a fusion device, particularly in terms of radiation management. Radiation protection during maintenance periods is of special concern, as personnel performing maintenance‐like activities will be exposed to delayed gamma fields from numerous and complex ...
Pablo Martínez-Albertos, Patrick Sauvan, Juan Pablo Catalán, Mario Belotti, François Javier, Joffrey Germa, Yannick Le Tonqueze, Alexis Dammann, Rafael Juárez, Geng Chen   +9 more
wiley   +1 more source

Spherical tokamak physics research in preparation for the operation of NSTX-U

Nuclear Fusion
The National Spherical Torus Experiment Upgrade (NSTX-U) is preparing to resume operation, representing a crucial step toward realizing compact, cost-effective fusion pilot plants.
S. Munaretto, P.O. Adebayo-Ige, H. Anand, G. Avdeeva, S.G. Baek, K. Barada, E. Belli, E.V. Belova, J.W. Berkery, T.N. Bernard, N. Bertelli, P. Bonofiglo, P.T. Bonoli, M.D. Boyer, J. Candy, C.S. Chang, H. Chung, C. Clauser, M. Comanescu, D. Corona, N.A. Crocker, R. De Levante Rodriguez, E.W. DeShazer, A. Diallo, J. Dominski, V.N. Duarte, F. Ebrahimi, E.D. Emdee, S. Ethier, N.M. Ferraro, E.L. Foley, E.D. Fredrickson, M.E. Galante, K.F. Gan, S. Gerhardt, R.J. Goldston, M. Gorelenkova, W. Guttenfelder, R. Hager, F.D. Halpern, J. Halpern, D. Hatch, F. Hoffmann, M.S. Islam, S.C. Jardin, S.M. Kaye, A. Khodak, J.E. Kinsey, A. Kleiner, E. Kolemen, S. Ku, M. Lampert, B. Leard, B.P. LeBlanc, J.B. Lestz, F.M. Levinton, P.-Y. Li, N.C. Logan, N.A. Lopez, R. Lunsford, T. Macwan, R. Maingi, J. McClenaghan, A.G. McLean, J.E. Menard, Y.-S. Na, A.O. Nelson, M. Ono, A. Pajares, A. Pankin, J. Parisi, F.I. Parra, M.S. Parsons, B.S. Patel, M. Podestá, F.M. Poli, M. Porcelli, T. Rafiq, R. Raman, J.D. Riquezes, S.A. Sabbagh, A. Sanchez-Villar, E. Schuster, S. Shiraiwa, T. Singh, S.P. Smith, D. Smith, V.A. Soukhanovskii, G.M. Staebler, B. Stratton, K.E. Thome, M. Tobin, I.U. Uzun-Kaymak, B. Van Compernolle, W.X. Wang, W. Wehner, A.S. Welander, B.D. Wirth, J. Yang, V. Zamkovska, X. Zhang   +100 more
doaj   +1 more source

Regularity for Micropolar Fluid Equations Subjected to Hall Current

Journal of Applied Mathematics, Volume 2025, Issue 1, 2025.
In this paper, we consider the density‐dependent incompressible Hall‐magnetomicropolar fluid equations and establish a regularity condition involving the Lt1Lx∞ norm of the velocity gradient and the microrotational velocity gradient and the Lt2r/r−3Lxr norm of the magnetic field gradient for r > 3.
Mingyu Zhang, Arpan Hazra
wiley   +1 more source

Spectroscopic Measurement of Hydrogen Atom Density in a Plasma Produced with 28 GHz ECH in QUEST

Atoms, 2020
The spatial distribution of the hydrogen atom density was evaluated in a spherical tokamak (ST) plasma sustained only with 28 GHz electron cyclotron heating (ECH). The radially resolved Hδ emissivity was measured using multiple viewing chord spectroscopy
Satoru Mori, Taiichi Shikama, Kazuaki Hanada, Nao Yoneda, Arseniy Kuzmin, Masahiro Hasuo, Hiroshi Idei, Takumi Onchi, Akira Ejiri, Yuki Osawa, Yi Peng, Kyohei Matsuzaki, Shinichiro Kado, Keiji Sawada, Takeshi Ido, Kazuo Nakamura, Ryuya Ikezoe, Yoshihiko Nagashima, Makoto Hasegawa, Kengo Kuroda, Aki Higashijima, Takahiro Nagata, Shun Shimabukuro   +22 more
doaj   +1 more source

Converting energy from fusion into useful forms

, 2013
If fusion power reactors are to be feasible, it will still be necessary to convert the energy of the nuclear reaction into usable form. The heat produced will be removed from the reactor core by a primary coolant, which might be water, helium, molten ...
Harrington, C., Jenkins, I., Kiely, C., Kovari, M.   +3 more
core   +1 more source

Convective and Orographic Origins of the Mesoscale Kinetic Energy Spectrum

Geophysical Research Letters, Volume 51, Issue 21, 16 November 2024.
Abstract The mesoscale spectrum describes the distribution of kinetic energy in the Earth's atmosphere between length scales of 10 and 400 km. Since the first observations, the origins of this spectrum have been controversial. At synoptic scales, the spectrum follows a −3 spectral slope, consistent with two‐dimensional turbulence theory, but a ...
Salah Kouhen, Benjamin A. Storer, Hussein Aluie, David P. Marshall, Hannah M. Christensen   +4 more
wiley   +1 more source

Multi-machine validation of plasma initiation modelling and prospects for future devices: Predicting plasma initiation using only hardware design and control room input data

Nuclear Fusion
This paper reports on the generic prediction capability of full electromagnetic plasma initiation modelling with DYON, which was carried out for the first time in fusion research by the joint modelling of the International Tokamak Physics Activity ...
Hyun-Tae Kim, Eugenio Schuster, Fabien Jaulmes, Geoffrey Cunningham, Gloria Falchetto, Hong-Sik Yun, James Yang, Jeongwon Lee, Joelle Mailloux, Oliver Bardsley, Peter de Vries, Runze Chen, Takuma Wakatsuki, Xavier Litaudon, Yeongsun Lee, Yong-Su Na, ITPA-Integrated Operation Scenario group   +16 more
doaj   +1 more source

Fully non-inductive plasma start-up with lower-hybrid waves using the outboard-launch and top-launch antennas on the TST-2 spherical tokamak

EPJ Web of Conferences, 2017
Removal of the central solenoid is essential to realize an economical spherical tokamak fusion reactor, but non-inductive plasma start-up is a challenge. On the TST-2 spherical tokamak, non-inductive plasma start-up using lower-hybrid (LH) waves has been
Tsujii Naoto, Takase Yuichi, Ejiri Akira, Shinya Takahiro, Yajima Satoru, Yamazaki Hibiki, Togashi Hiro, Moeller Charles P., Roidl Benedikt, Takahashi Wataru, Toida Kazuya, Yoshida Yusuke   +11 more
doaj   +1 more source

X‐ray lens figure errors retrieved by deep learning from several beam intensity images

Journal of Synchrotron Radiation, Volume 31, Issue 5, Page 1001-1009, September 2024.
A neural network trained with a few thousand simulations using random errors is demonstrated to predict accurately the lens error profile that accounts for all aberrations of a compound refractive lens in a synchrotron beamline.The phase problem in the context of focusing synchrotron beams with X‐ray lenses is addressed.
Manuel Sanchez del Rio, Rafael Celestre, Juan Reyes-Herrera   +2 more
wiley   +1 more source

The Wisconsin Plasma Astrophysics Laboratory

, 2015
The Wisconsin Plasma Astrophysics Laboratory (WiPAL) is a flexible user facility designed to study a range of astrophysically relevant plasma processes as well as novel geometries that mimic astrophysical systems. A multi-cusp magnetic bucket constructed
Brookhart, M., Clark, M., Cooper, C. M., Desangles, V., Egedal, J., Endrizzi, D., Flanagan, K., Forest, C. B., Khalzov, I. V., Li, H., Miesch, M., Milhone, J., Nornberg, M., Olson, J., Peterson, E., Roesler, F., Schekochihin, A., Schmitz, O., Siller, R., Spitkovsky, A., Stemo, A., Wallace, J., Weisberg, D., Zweibel, E.   +23 more
core   +1 more source