Zobrazeno 1 - 10
of 12
pro vyhledávání: '"O. C. Usuriaga"'
Autor:
Iberê L. Caldas, Edson Kenzo Sanada, O. C. Usuriaga, C. Ribeiro, Ricardo Magnus Osorio Galvao, M. V. A. P. Heller, V. Bellintani, Juan Iraburu Elizondo, I. El Chamaa-Neto, Ivan Cunha Nascimento, J. H. F. Severo, I.B. Semenov, A. M. M. Fonseca, Yu K Kuznetsov, Zwinglio Guimarães-Filho
Publikováno v:
Nuclear Fusion. 47:1570-1576
Two reproducible regimes of tokamak operation, with excitation or suppression of MHD activity can be obtained using a voltage-biased electrode inside the edge of the TCABR tokamak. The experiment was carried out adjusting the tokamak parameters to ob
Autor:
E. A. Saettone, Ivan Cunha Nascimento, V. Bellintani, O. C. Usuriaga, Ricardo Magnus Osorio Galvao, L. F. Ruchko, Yu K Kuznetsov, A. M. M. Fonseca, A. A. Ferreira, V. S. Tsypin
Publikováno v:
Nuclear Fusion. 44:631-644
It is found in experiments carried out in Tokamak Chauffage Alfven Bresilien (TCABR) that two regimes of runaway discharges (RADs) with very different characteristics are possible. The RAD-I regime, which is similar to that observed in other tokamaks
Autor:
Ricardo Magnus Osorio Galvao, E. M. Ozono, Yu K Kuznetsov, O. C. Usuriaga, Edson Kenzo Sanada, L. F. Ruchko, Juan Iraburu Elizondo, Ivan Cunha Nascimento, Artour G Elfimov, W.P. de Sá, C. Ribeiro, V. Bellintani, Aluisio Neves Fagundes
Publikováno v:
AIP Conference Proceedings.
Alfven Waves (AW) were launched in tokamak (TCABR) density limit plasmas for the first time. Experimental evidence of plasma heating is backed up by calculations from an 1‐D numerical cylindrical code, based on the toroidal electric field diffusion
Autor:
Juan Iraburu Elizondo, Ricardo Magnus Osorio Galvao, Ivan Cunha Nascimento, O. C. Usuriaga, Marcos Hideaki Ono, F.O. Borges, Edson Kenzo Sanada, Artour G Elfimov, P. Puglia, R. P. da Silva, M. P. Alonso, W.P. de Sá, J. H. F. Severo
Publikováno v:
Journal of Physics: Conference Series. 511:012039
This work presents the experimental analysis of the central electron temperature measured by the electron cyclotron emission (ECE) radiometer and the infrared Thomson Scattering (ITS) diagnostic. The detection of the ECE radiation is done by a hetero
Autor:
Ivan Cunha Nascimento, J. H. F. Severo, Munemasa Machida, Edson Kenzo Sanada, O. C. Usuriaga, Ricardo Magnus Osorio Galvao, Luiz Angelo Berni, M. P. Alonso, Michael Tendler, Yu K Kuznetsov, A. C. A. Figueiredo, Juan Iraburu Elizondo, L. C. Jeronimo, V C Theodoro, F.O. Borges
Publikováno v:
Journal of Physics: Conference Series. 370:012045
An analytical method is proposed to evaluate the experimental uncertainty in the electron temperature measurements in the TCABR tokamak. Solving the integral equation resulting from the convolution of two functions, one representing, the scattered li
Autor:
Ivan Cunha Nascimento, P. Duarte, M. Mizintseva, Vladimir E. Moiseenko, Mikhail Gryaznevich, Artour G Elfimov, D.J. Trembach, F. do Nascimento, G. Vorobyov, L.M.F. Schmutzler, D. L. Toufen, S.R.S. Tekieh, F.O. Borges, W.P. de Sá, Zwinglio Guimarães-Filho, V. Bellintani, G. Ronchi, Ricardo Magnus Osorio Galvao, J. H. F. Severo, Edson Kenzo Sanada, R. Arvin, Siamak Mohammadi, Mahmood Ghoranneviss, R.M. de Castro, A P Reis, Juan Iraburu Elizondo, Yu K Kuznetsov, A.V. Melnikov, Munemasa Machida, R. Narayanan, Társis M Germano, L. F. Ruchko, G.P. Canal, Carlos A. Silva, H. F. C. Figueiredo, M. Peres Alonso, Iberê L. Caldas, O. C. Usuriaga
Publikováno v:
Nuclear Fusion. 52:063004
Long-distance correlations (LDCs) of plasma potential fluctuations in the plasma edge have been investigated in the TCABR tokamak in the regime of edge biasing H-mode using an array of multi-pin Langmuir probes. This activity was carried out as part
Autor:
Ricardo Magnus Osorio Galvao, A. C. A. Figueiredo, Juan Iraburu Elizondo, J. H. F. Severo, Luiz Angelo Berni, Munemasa Machida, M. P. Alonso, O. C. Usuriaga, F.O. Borges
Publikováno v:
Review of Scientific Instruments. 81:10D529
We present the first simultaneous measurements of the Thomson scattering and electron cyclotron emission radiometer diagnostics performed at TCABR tokamak with Alfvén wave heating. The Thomson scattering diagnostic is an upgraded version of the one
Autor:
M. P. Alonso, J. H. F. Severo, Juan Iraburu Elizondo, A. C. A. Figueiredo, F.O. Borges, Munemasa Machida, J Leonardo, Edson Kenzo Sanada, Luiz Angelo Berni, O. C. Usuriaga, Ricardo Magnus Osorio Galvao
Publikováno v:
Journal of Physics: Conference Series. 227:012027
An incoherent and infrared Thomson scattering diagnostic (ITS) was transferred from ISTTOK (Lisboa) and reconstructed on TCABR (S. Paulo). In the first phase of this international collaboration, the diagnostic uses a Neodymium:Glass laser with up to
Autor:
O. C. Usuriaga, Juan Iraburu Elizondo, Ricardo Magnus Osorio Galvao, J. H. F. Severo, F.O. Borges, Zwinglio Guimarães-Filho, Edson Kenzo Sanada, W.P. de Sá, Michael Tendler, Ivan Cunha Nascimento, Yu K Kuznetsov
Publikováno v:
Nuclear Fusion. 49:115026
A new method for determining the temporal evolution of plasma rotation is reported in this work. The method is based upon the detection of two different portions of the spectral profile of a plasma impurity line, using a monochromator with two photom
Autor:
L. F. Ruchko, Ricardo Magnus Osorio Galvao, O. C. Usuriaga, V. S. Tsypin, A. M. M. Fonseca, S. I. Krasheninnikov, Edson Kenzo Sanada, T. K. Soboleva, Yu K Kuznetsov
Publikováno v:
Physics of Plasmas. 12:072508
Cold recombinative plasma is the basic feature of the new regime of runaway discharges recently discovered in the Tokamak Chauffage Alfven Bresilien tokamak [R. M. O. Galvao et al., Plasma Phys. Controlled Fusion 43, 1181 (2001)]. With low plasma tem