Line integration effects on ion temperatures in tokamak plasmas measured with neutron emission spectroscopy
2008 (English)In: Review of Scientific Instruments, ISSN 0034-6748, E-ISSN 1089-7623, Vol. 79, no 10, 10E511- p.Article in journal (Refereed) Published
The line integrated line emission measured by neutron spectrometers at JET along sight lines in the vertical and horizontal planes has been simulated in Monte Carlo calculations to determine the relationship between the measured (effective) ion temperature (T-eff) relative to the peak value of the profile (T-0). The general sight line dependence of (T-eff) was expressed analytically for circular plasmas which was used to explain the simulated results for the actual JET sight lines. The analytical model with parametrization of sight lines and plasma profiles is described and the results are used to discuss dual sight line measurements that can be tested at JET and its forward implications for study burning (nearly thermal) plasmas of ITER.
Place, publisher, year, edition, pages
2008. Vol. 79, no 10, 10E511- p.
Monte Carlo methods, neutron spectra, plasma simulation, plasma temperature, plasma toroidal confinement, Tokamak devices
Physical Sciences Engineering and Technology
IdentifiersURN: urn:nbn:se:uu:diva-149439DOI: 10.1063/1.2988820ISI: 000260573500093OAI: oai:DiVA.org:uu-149439DiVA: diva2:405020
Conference Information: 17th Topical Conference on High-Temperature Plasma Diagnostics Albuquerque, NM, 20082011-03-202011-03-202016-04-13Bibliographically approved