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.
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}
}
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}
}