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Runaway transport studies in the TJ-I Tokamak; Estudios de transporte de electrones profugos en el tokamak TJ-I

Technical Report:

Abstract

Runaway diffusion coefficient, Dr{sub r}, for TJ-I tokamak has been deduced using two different methods: In the first one, D{sub r} is obtained using the steady state approach for values of the runaway confinement time pi{sub r} deduced from hard-X-ray Bremsstrahlung spectra; in the second method, D{sub r} is deduced from sawteeth oscillations of HXR flux, and of SXR intensity, recorded simultaneously. Data have been taken in a scan with the toroidal magnetic field B{sub r}.Values obtained for D{sub r}=(5-10) m``2s``-1, decreasing with B{sub t} are in both cases consistent. Assuming that magnetic turbulence is responsible for their transport, from D{sub r} we can deduce b/B{sub t}, the magnetic fluctuations level, and then infer the thermal conductivity coefficient lambda{sub e}. The radial energy resolution of renaway electrons allows us to infer for b/B{sub T} and lambda{sub e} values at the plasma edge and for an inner position about r=a/2. Results are in food agreement with those ones obtained in TJ-I using probes, spectroscopic methods, power balance analysis and a coupled analysis for temperature and density pulses.
Publication Date:
Dec 01, 1994
Product Type:
Technical Report
Report Number:
CIEMAT-737
Reference Number:
SCA: 700412; PA: SPN-94:0B0788; EDB-95:018963; SN: 94001295723
Resource Relation:
Other Information: PBD: [1994]
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; TJ-1 TOKAMAK; CHARGED-PARTICLE TRANSPORT; RUNAWAY ELECTRONS; THERMAL DIFFUSION; X RADIATION; TOKAMAK DEVICES; TOROIDAL CONFIGURATION; 700412; MAGNETIC CONFINEMENT DEVICES
OSTI ID:
10104706
Research Organizations:
Centro de Investigaciones Energeticas, Medioambientales y Tecnologicas (CIEMAT), Madrid (Spain)
Country of Origin:
Spain
Language:
English
Other Identifying Numbers:
Other: ON: DE95721646; TRN: ES94B0788
Availability:
OSTI; NTIS; INIS
Submitting Site:
INIS
Size:
27 p.
Announcement Date:
Jun 30, 2005

Technical Report:

Citation Formats

Rodriguez, L, Vega, J, Rodriguez-Yunta, A, Castejon, F, Pardo, C, and Navarro, A P. Runaway transport studies in the TJ-I Tokamak; Estudios de transporte de electrones profugos en el tokamak TJ-I. Spain: N. p., 1994. Web.
Rodriguez, L, Vega, J, Rodriguez-Yunta, A, Castejon, F, Pardo, C, & Navarro, A P. Runaway transport studies in the TJ-I Tokamak; Estudios de transporte de electrones profugos en el tokamak TJ-I. Spain.
Rodriguez, L, Vega, J, Rodriguez-Yunta, A, Castejon, F, Pardo, C, and Navarro, A P. 1994. "Runaway transport studies in the TJ-I Tokamak; Estudios de transporte de electrones profugos en el tokamak TJ-I." Spain.
@misc{etde_10104706,
title = {Runaway transport studies in the TJ-I Tokamak; Estudios de transporte de electrones profugos en el tokamak TJ-I}
author = {Rodriguez, L, Vega, J, Rodriguez-Yunta, A, Castejon, F, Pardo, C, and Navarro, A P}
abstractNote = {Runaway diffusion coefficient, Dr{sub r}, for TJ-I tokamak has been deduced using two different methods: In the first one, D{sub r} is obtained using the steady state approach for values of the runaway confinement time pi{sub r} deduced from hard-X-ray Bremsstrahlung spectra; in the second method, D{sub r} is deduced from sawteeth oscillations of HXR flux, and of SXR intensity, recorded simultaneously. Data have been taken in a scan with the toroidal magnetic field B{sub r}.Values obtained for D{sub r}=(5-10) m``2s``-1, decreasing with B{sub t} are in both cases consistent. Assuming that magnetic turbulence is responsible for their transport, from D{sub r} we can deduce b/B{sub t}, the magnetic fluctuations level, and then infer the thermal conductivity coefficient lambda{sub e}. The radial energy resolution of renaway electrons allows us to infer for b/B{sub T} and lambda{sub e} values at the plasma edge and for an inner position about r=a/2. Results are in food agreement with those ones obtained in TJ-I using probes, spectroscopic methods, power balance analysis and a coupled analysis for temperature and density pulses.}
place = {Spain}
year = {1994}
month = {Dec}
}