Results 11 to 20 of about 1,463,568 (229)

Magnetic control of a tokamak plasma

, 2008
he plasma in a tokamak is magnetically confined through electromagnetic fields generated by a set of poloidal field coils, with feedforward nominal voltages or currents based on an approximate plasma model. Therefore, feedback control is necessary. A good magnetic control is essential for achieving good performance in present devices and expected to be
ALBANESE, Raffaele, AMBROSINO, GIUSEPPE, F. CRISANTI, AND JET EFDA CONTRIBUTORS   +3 more
core   +5 more sources

Runaway electron generation during tokamak start-up [PDF]

, 2022
Tokamak start-up is characterized by low electron densities and strong electric fields, in order to quickly raise the plasma current and temperature, allowing the plasma to fully ionize and magnetic flux surfaces to form.
Berger, E., Ekmark, Ida,, F\ufcl\uf6p, T\ufcnde-Maria, Hoppe, Mathias,, Hoppe, M., Ekmark, I., Berger, Esmee, Hoppe, Mathias, Ekmark, I, Fülöp, T., Fülöp, Tünde-Maria,, Ekmark, Ida, Berger, Esmée,, M. Hoppe, T. Fülöp, E. Berger, I. Ekmark   +16 more
core   +2 more sources

Fusion Energy and Tritium Fuel Cycle: Hydrogen Isotope Separation Technologies and Sorbent Materials. [PDF]

Small Methods
This review surveys sorbent‐based materials for hydrogen isotope separation, a key challenge in fusion fuel processing. Different types of adsorbents are compared in terms of selectivity, kinetics, and operational practicality. Limitations of cryogenic operation and tritium compatibility are highlighted, providing guidance toward efficient, low tritium
Sharma P, Shere L, Brown R.
europepmc   +2 more sources

Filamentation in the RTP tokamak plasma [PDF]

Plasma Physics and Controlled Fusion, 2000
Experimental data are presented showing filamentation of the Rijnhuizen tokamak project (RTP) plasma. These filaments are only resolved by the high-resolution double pulse Thomson scattering diagnostic, and appear as multiple peaks in the T-e profile with a typical width of 5-10 mm and an amplitude as high as 1 keV in a 2 keV ambient plasma. This paper
Beurskens, M.N. A., Cardozo, N.J.L., Arends, E.R., Barth, C.J., van der Meiden, H.J.   +4 more
openaire   +2 more sources

“Snowflake” H Mode in a Tokamak Plasma [PDF]

Physical Review Letters, 2010
An edge-localized mode (ELM) H-mode regime, supported by electron cyclotron heating, has been successfully established in a "snowflake" (second-order null) divertor configuration for the first time in the TCV tokamak. This regime exhibits 2 to 3 times lower ELM frequency and 20%-30% increased normalized ELM energy (ΔWELM/Wp) compared to an identically ...
Piras, F., Coda, S., Duval, B. P., Labit, B., Marki, J., Medvedev, S. Yu, Moret, J.-M., Pitzschke, A., Sauter, O.   +8 more
openaire   +4 more sources

Initial analytical theory of plasma disruption and experimental evidence

Scientific Reports, 2023
It is a great physical challenge to achieve controlled nuclear fusion in magnetic confinement tokamak and solve energy shortage problem for decades. In tokamak plasma, large-scale plasma instability called disruption will halt power production of reactor
Huibin Qiu, Zuozhi Hu, Shengfa Wu, Jiangcun Chen, Chengjie Zhong, Junjie Wu, Xiaobin Li, Donghua Xiao, Chunhui Shi, Junhui Liu, Wenjun Xiong, Tianyi Hu, Qilong Cai, Youlong Yuan   +13 more
doaj   +1 more source

On The Confinement of a Tokamak Plasma [PDF]

SIAM Journal on Mathematical Analysis, 2010
The goal of this paper is to understand from a mathematical point of view the magnetic confinement of plasmas for fusion. Following Frénod and Sonnendrücker [SIAM J. Math. Anal., 32 (2001), pp. 1227–1247], we first use two-scale convergence tools to derive a gyrokinetic system for a plasma submitted to a large magnetic field with a slowly spatially ...
openaire   +3 more sources

Transport Simulasion in a Burning Tokamak Plasma [PDF]

, 1992
A one-dimensional tokamak transport code (TASK/TR) has been developed to analyze the evolution of a burning plasma accompanied with fusion reaction. This code deals with the electrons, deuterons, tritons, thermalized α particles, fast α particles and ...
Kasai, Takashi, Furutani, Yoichiro, Fukuyama, Atsushi   +2 more
core   +1 more source

In-situ Low Power Tests of the ASDEX Upgrade ECRH Transmission Lines [PDF]

EPJ Web of Conferences
An Electron Cyclotron Resonance Heating (ECRH) system employing 8 gyrotrons is in routine operation at the ASDEX Upgrade tokamak at IPP Garching. The gyrotrons are of two-frequency type operating at 105 and 140 GHz with a maximum output power of up to 1 ...
Wagner Dietmar, Leuterer Fritz, Monaco Francesco, Schütz Harald, Stober Jörg, Thumm Manfred   +5 more
doaj   +1 more source

Methodology of Plasma Shape Reachability Area Estimation in D-Shaped Tokamaks

Mathematics, 2022
This paper suggests and develops a new methodology of estimation for a multivariable reachability region of a plasma separatrix shape on the divertor phase of a plasma discharge in D-shaped tokamaks.
Yuri V. Mitrishkin, Valerii I. Kruzhkov, Pavel S. Korenev   +2 more
doaj   +1 more source