Results 161 to 170 of about 928,369 (231)

High Density ECR Discharge with Gyrotron Plasma Heating as a Multipurpose Ion Source

International Vacuum Electronics Conference, 2023
The use of the powerful millimeter wavelength range gyrotron radiation for the plasma heating allowed us to create a concept of a unique gasdynamic ion sources at IAP RAS.
V. Skalyga, I. Izotov, S. Vybin, R. Lapin, E. Kiseleva, A. Polyakov   +5 more
semanticscholar   +1 more source

Modernization of the filtration system for the Doppler reflectometry diagnostics of the L-2M stellarator for operation in regimes high-power ECR heating

Journal of Instrumentation, 2020
The commissioning of the MIG-3 gyrotron complex at the L-2M stellarator has made it possible to reach a record power density input into plasma of 3.4 MW/m3 during the ECR heating of the plasma.
A. A. Kharchevskii, N. Bogachev, S.P. Belukhov, D. Malakhov, N. Skvortsova, N. Gusein-zade   +5 more
semanticscholar   +1 more source

Megawatt Gyrotrons For ECR Heating

SPIE Proceedings, 1988
Varian is in the process of developing gyrotrons capable of generating power levels of 1 MW CW at a frequency of 140 GHz. The first experimental gyrotron in this program has been designed to generate short-pulse power levels of 1 MW and up to 400 kW CW. In recent tests on this gyrotron, a short-pulse power level of 820 kW was obtained at 21% efficiency.
K. FeIch, C. Hess, H. Huey, E. Jongewaard, H. Jory, R. Pendleton   +5 more
openaire   +1 more source

ECR Heating in L-2M Stellarator

Fusion Technology, 1995
The first results of ECH experiments in the L-2M stellarator are presented. The main goal of the experiments is to investigate the physics of ECH and plasma confinement at very high values of the v...
S.E. Grebenshchikov, G.M. Batanov, O.I. Fedyanin, D.K. Akulina, E.D. Andryukhina, V.V. Abrakov, M.S. Berezhetskii, I.S. Danilkin, N.P. Donskaya, G.A. Gladkov, N.K. Kharchev, Yu.V. Kholnov, L.M. Kolik, L.M. Kovrizhnykh, N.F. Larionova, A.A. Letunov, K.M. Likin, A.I. Meshcheryakov, Yu.I. Nechaev, A.E. Petrov, K.A. Sarksyan, I.S. Sbitnikova, E.R. Sisov, A.D. Smirnova, V.N. Sukhodol'skii, G.S. Voronov   +25 more
openaire   +1 more source

Plasma instability in ECR heated ion sources

1990 Plasma Science IEEE Conference Record - Abstracts, 1990
Summary form only given. In an experimental program on Constance B and Tara Anchor at the MIT Plasma Fusion Center, electron cyclotron resonance (ECR)-heated plasmas in magnetic quadrupole mirrors were investigated. Experiments were conducted at microwave frequencies between 10.5 and 18 GHz and ECR heating powers between 1 and 5 kW.
Y.-K. Pu, W. Halverson
openaire   +1 more source

Study of carbon pellet ablation in ECR-heated W7-AS plasmas

Nuclear Fusion, 2004
The ablation of carbon pellets injected into ECR-heated plasmas of Wendelstein 7-AS (W7-AS) has been investigated using a photographic technique with the aim of studying features of the ablation process in stellarator plasmas. The ablation rate profiles were measured assuming a proportionality of the C II radiation and the ablation rate.
Ledl, L., Burhenn, R., Lengyel, L., Wagner, F., Sergeev, V., Timokhin, V., Kuteev, B., Skokov, V., Egorov, S.   +8 more
  +5 more sources

Hot Electron Ring Formation in ECR Heated Plasma

Communications in Theoretical Physics, 1989
Energetic particles can be .generated by electron cyclotron resonant heating (ECRH) in tokamak plasma, forming electron ring. The bounce frequency is taken into account in resonance condition. The electron energy is limited by detaching of the adjacent overlapped islands. An analytical criterion for transition is obtained.
Wang Zhong-tian, Jian Guang-de
openaire   +1 more source

Experimental study of single- vs two-close-frequency heating impact on confinement and loss dynamics in ECR ion source plasmas by means of x-ray spectroscopy and imaging

Plasma Physics and Controlled Fusion, 2021
We hereby report a study on confinement and electron loss dynamics in the magnetic trap of an electron cyclotron resonance ion source using a special multi-diagnostic setup that has allowed the simultaneous collection of plasma radio-self-emission and x ...
D. Mascali, E. Naselli, R. Rácz, S. Biri, L. Celona, A. Galatà, S. Gammino, M. Mazzaglia, G. Torrisi   +8 more
semanticscholar   +1 more source

Cost-Effective Microwave Assisted ECR Heating Using Combination of Quasi-Locked Low-Power Magnetrons on GLAST-III

IEEE Transactions on Plasma Science
Glass spherical tokamak-III (GLAST-III) is a small spherical tokamak ( $R =20$ cm, $a =10$ cm, and $A =2$ ) developed at Pakistan Tokamak Plasma Research Institute (PTPRI).
Shahab Ud-Din Khan, Muhammad Faizan Tahir, Zia ur Rehman, R. Khan, Ahmad Ali, Muhammad Abdullah, Sehrish Shakir, Ayesha Alam, Shahzaib Zahid   +8 more
semanticscholar   +1 more source

Transport analysis in ohmic and ECR heated plasmas in the RTP tokamak

Plasma Physics and Controlled Fusion, 1994
Global and local power balance studies in ohmic and ECR-heated plasmas in the RTP tokamak (R0=0.72 m, a=0.16 m, BT=2.14 T) are reported, and compared with models. In ohmic plasmas the energy confinement time is consistent with the Goldston-ohmic scaling law. Using ECRH, high Te and Del Te are obtained.
Konings, J.A., Hogeweij, G.M. D., Cardozo, N.J.L., Oomens, A.A. M., Schüller, F.C.   +4 more
openaire   +1 more source