You need JavaScript to view this

Dynamical Simulation of Recycling and Particle Fueling in TJ-II Plasmas; Simulacion Dinamica del Reciclado y de la Inyeccion de Particulas en los Plasmas del TJ-II

Abstract

With the aim of improving the calculation tools for transport analysis in TJ-II plasmas, in this work we analyze the simplified model for a kinetic equation that ASTRA uses to calculate the neutral particle distribution in the plasma. Next, we act on the boundary conditions for this kinetic equation (particularly on the neutral density in the plasma boundary) so we can simulate the recycling conditions for the TJ-II in a simple way. With the resulting transport models we can easily analyze the sensibility of these plasmas to the cold gas puffing depending on the recycling conditions. These transport models evidence the problem of density control in the TJ-II. Likewise, we estimate the importance of recycling in the plasmas heated by energetic neutral beam injection. The experimentally observed increments in density when the energetic neutrals are injected would respond, according to the calculations here presented, to a large increment of the neutrals influx that cannot be explained by the beam itself. (Author) 22 refs.
Publication Date:
Jul 20, 2007
Product Type:
Technical Report
Report Number:
CIEMAT-1099
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; TOKAMAK DEVICES; KINETIC EQUATIONS; PLASMA; TRANSPORT; NEUTRAL PARTICLES; BOUNDARY CONDITIONS; RECYCLING; NEUTRAL ATOM BEAM INJECTION
OSTI ID:
20892565
Research Organizations:
Centro de Investigaciones Energeticas Medioambientales y Tecnologicas (CIEMAT), Madrid (Spain)
Country of Origin:
Spain
Language:
Spanish
Other Identifying Numbers:
TRN: ES07B0210
Availability:
Commercial reproduction prohibited; OSTI as DE20892565
Submitting Site:
SPN
Size:
27 pages
Announcement Date:
Jul 20, 2007

Citation Formats

Lopez-Bruna, D, Ferreira, J A, Tabares, F L, Castejon, F, and Guasp, J. Dynamical Simulation of Recycling and Particle Fueling in TJ-II Plasmas; Simulacion Dinamica del Reciclado y de la Inyeccion de Particulas en los Plasmas del TJ-II. Spain: N. p., 2007. Web.
Lopez-Bruna, D, Ferreira, J A, Tabares, F L, Castejon, F, & Guasp, J. Dynamical Simulation of Recycling and Particle Fueling in TJ-II Plasmas; Simulacion Dinamica del Reciclado y de la Inyeccion de Particulas en los Plasmas del TJ-II. Spain.
Lopez-Bruna, D, Ferreira, J A, Tabares, F L, Castejon, F, and Guasp, J. 2007. "Dynamical Simulation of Recycling and Particle Fueling in TJ-II Plasmas; Simulacion Dinamica del Reciclado y de la Inyeccion de Particulas en los Plasmas del TJ-II." Spain.
@misc{etde_20892565,
title = {Dynamical Simulation of Recycling and Particle Fueling in TJ-II Plasmas; Simulacion Dinamica del Reciclado y de la Inyeccion de Particulas en los Plasmas del TJ-II}
author = {Lopez-Bruna, D, Ferreira, J A, Tabares, F L, Castejon, F, and Guasp, J}
abstractNote = {With the aim of improving the calculation tools for transport analysis in TJ-II plasmas, in this work we analyze the simplified model for a kinetic equation that ASTRA uses to calculate the neutral particle distribution in the plasma. Next, we act on the boundary conditions for this kinetic equation (particularly on the neutral density in the plasma boundary) so we can simulate the recycling conditions for the TJ-II in a simple way. With the resulting transport models we can easily analyze the sensibility of these plasmas to the cold gas puffing depending on the recycling conditions. These transport models evidence the problem of density control in the TJ-II. Likewise, we estimate the importance of recycling in the plasmas heated by energetic neutral beam injection. The experimentally observed increments in density when the energetic neutrals are injected would respond, according to the calculations here presented, to a large increment of the neutrals influx that cannot be explained by the beam itself. (Author) 22 refs.}
place = {Spain}
year = {2007}
month = {Jul}
}