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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Investigation of rotation at the plasma edge in TCABR

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Author(s):
Severo, J. H. F. [1] ; Ronchi, G. [1] ; Galvao, R. M. O. [1] ; Nascimento, I. C. [1] ; Guimaraes-Filho, Z. O. [1] ; Kuznetsov, Yu. K. [1] ; Nave, M. F. F. [2] ; Oliveira, A. M. [1] ; do Nascimento, F. [1] ; Tendler, M. [3]
Total Authors: 10
Affiliation:
[1] Univ Sao Paulo, Inst Phys, Plasma Phys Lab, BR-05508 Sao Paulo - Brazil
[2] Univ Tecn Lisboa, Inst Super Tecn, Inst Plasmas & Fusao Nucl, Assoc EURATOM IST, P-1049001 Lisbon - Portugal
[3] Royal Inst Technol, Alfven Lab, Stockholm - Sweden
Total Affiliations: 3
Document type: Journal article
Source: NUCLEAR FUSION; v. 55, n. 9 SEP 2015.
Web of Science Citations: 3
Abstract

This paper summarizes experimental results from recent studies on intrinsic rotation at the plasma edge of the TCABR tokamak. These results were obtained after upgrading the number of channels of the rotation diagnostic to three. The measurements were carried out in the collisional (Pfirsch-Schluter) regime and the rotation profiles of the ions were obtained from the Doppler shifts of the impurity carbon lines, CIII (464.74 nm), and CVI (529.06 nm). Results on the correlation between toroidal rotation at the plasma edge and direction of gas injection are also presented. They indicate that the direction of gas injection has a small effect on rotation; the velocity of the background neutral hydrogen is affected by direct momentum transfer from the injected gas (also hydrogen), while the carbon ions' velocity is affected by inward radial friction force between the injected gas atoms and ions, increasing their velocity in the opposite sense of the plasma current. (AU)

FAPESP's process: 14/13296-8 - Investigation on plasma pressure profile study in the TCABR Tokamak and the creating a group of optics
Grantee:José Helder Facundo Severo
Support type: Regular Research Grants
FAPESP's process: 11/50773-0 - Center of excellence in physics and applications of plasmas
Grantee:Ricardo Magnus Osório Galvão
Support type: Research Projects - Thematic Grants