Results 51 to 60 of about 91,764 (228)

Comparison of the scrape‐off layer two‐point model for deuterium and helium plasmas in JET ITER‐like wall low‐confinement plasma conditions

Contributions to Plasma Physics, Volume 64, Issue 7-8, August-September 2024.
Abstract The hydrogenic two‐point model (H‐2PM), an analytical model for the scrape‐off layer that predicts a common electron and ion temperature and density along a flux tube from a target temperature and density, is adapted to a single‐species helium (He) model, preserving the 2PM assumptions and analytical nature.
David Rees, Joona Sissonen, Mathias Groth, Vesa‐Pekka Rikala, Henri Kumpulainen, Beth Thomas, Mathias Brix, JET Contributors   +7 more
wiley   +1 more source

THE SPECTROSCOPY OF TOKAMAKS

Le Journal de Physique Colloques, 1980
The importance of line spectra of highly ionized heavy atoms in Tokamak plasma is recalled. A short review is given of methods, mostly theoretical, used for identifying lines : ab initio computation of wavelengths and intensities. The case of unresolved transition arrays is described.
openaire   +2 more sources

First SOLPS‐ITER simulations of ASDEX Upgrade partially detached H‐mode with boron impurity: The missing radiation at the outer strike‐point region

Contributions to Plasma Physics, Volume 64, Issue 7-8, August-September 2024.
Abstract Partially detached H‐modes are the baseline regime for the future ITER operation. The ASDEX Upgrade partially detached H‐mode is modeled using the SOLPS‐ITER code with drifts enabled and compared with experimental data. For the first time, boron (B) impurity is simulated in the Scrape‐off layer (SOL) and divertor. A comparison between divertor
S. O. Makarov, D. P. Coster, T. Gleiter, D. Brida, M. Muraca, R. Dux, P. David, B. Kurzan, X. Bonnin, M. O'Mullane, ASDEX Upgrade Team   +10 more
wiley   +1 more source

Status of the COMPASS tokamak and characterization of the first H-mode

, 2015
This paper summarizes the status of the COMPASS tokamak, its comprehensive diagnostic equipment and plasma scenarios as a baseline for the future studies. The former COMPASS-D tokamak was in operation at UKAEA Culham, UK in 1992–2002.
R. Pánek, J. Adamek, M. Aftanas, P. Bílková, P. Bohm, F. Brochard, P. Cahyna, J. Cavalier, R. Dejarnac, M. Dimitrova, O. Grover, J. Harrison, P. Háček, J. Havlicek, A. Havránek, J. Horáček, M. Hron, M. Imrisek, F. Janky, A. Kirk, M. Komm, K. Kovářík, J. Krbec, L. Kripner, T. Markovič, K. Mitošinková, J. Mlynar, D. Naydenkova, M. Peterka, J. Seidl, J. Stöckel, E. Štefániková, M. Tomes, J. Urban, P. Vondracek, M. Varavin, J. Varju, V. Weinzettl, J. Zajac   +38 more
semanticscholar   +1 more source

Self‐organization of plasma edge turbulence in interaction with recycling neutrals

Contributions to Plasma Physics, Volume 64, Issue 7-8, August-September 2024.
Abstract Experimental results from several tokamaks suggest a strong impact of divertor density regimes on turbulent transport in the edge plasma. Reciprocally, the change in transverse transport and SOL width affects the access to density regimes, making it a fundamental topic for heat exhaust issue. Such phenomenology is highly nonlinear and can only
V. Quadri, P. Tamain, Y. Marandet, H. Bufferand, N. Rivals, G. Ciraolo, G. Falchetto, R. Düll, H. Yang   +8 more
wiley   +1 more source

Introducing electromagnetic effects in Soledge3X

Contributions to Plasma Physics, Volume 64, Issue 7-8, August-September 2024.
Abstract In the pedestal region, electromagnetic effects affect the evolution of micro‐instabilities and plasma turbulence. The transport code Soledge3X developed by the CEA offers an efficient framework for turbulent 3D simulation on an electrostatic model with a fixed magnetic field. The physical accuracy of the model is improved with electromagnetic
Raffael Düll, Hugo Bufferand, Eric Serre, Guido Ciraolo, Virginia Quadri, Nicolas Rivals, Patrick Tamain   +6 more
wiley   +1 more source

Fractional variational problems and particle in cell gyrokinetic simulations with fuzzy logic approach for tokamaks [PDF]

Nuclear Technology and Radiation Protection, 2009
In earlier Rastovic's papers [1] and [2], the effort was given to analyze the stochastic control of tokamaks. In this paper, the deterministic control of tokamak turbulence is investigated via fractional variational calculus, particle in cell simulations,
Rastović Danilo
doaj   +1 more source

Toward plasma drifts in EMC3: Implementation of gradient, divergence, and particle tracing schemes

Contributions to Plasma Physics, Volume 64, Issue 7-8, August-September 2024.
Abstract This paper presents a first implementation of gradient, divergence, and particle tracing schemes for the EMC3 code, a stochastic 3D plasma fluid code widely employed for edge plasma and impurity transport modeling in tokamaks and stellarators.
Ruben De Wolf, Felix Reimold, Yuhe Feng, Matthieu Jacobs, Wouter Dekeyser, Giovanni Samaey, Martine Baelmans   +6 more
wiley   +1 more source

SPECTROSCOPIC DIAGNOSTICS OF TOKAMAKS

Le Journal de Physique Colloques, 1988
AbstractImpurities being an important concern in tokamaks, spectroscopy plays a key role in their understanding. Techniques for the evaluation of concentrations, power losses and transport properties are surveyed, and a few developments are outlined.
openaire   +3 more sources

An optimized AC side startup strategy of E‐STATCOM for ITER pulsed power electrical network

IET Generation, Transmission &Distribution, Volume 18, Issue 16, Page 2719-2731, August 2024.
In this article, an energy consumption optimization startup strategy of E‐STATCOM system using supercapacitor energy storage based MMC is proposed. This startup strategy avoids the use of current limiting resistors in supercapacitor energy storage circuits and reduces additional energy loss.
Tianbai Deng, Tao Yuan, Jun Tao, Xianshun Shen, Song Han, Qianlong Zhu, Renjing Fan, Chong Mei   +7 more
wiley   +1 more source