The long standing disagreement between the central electron temperature measured by Thomson scattering and electron cyclotron emission (2nd harmonic, X-mode) in high performance plasmas observed in JET and TFTR is reexamined. In this paper we report on recent analysis carried out in JET with the aim of investigating the role of different plasma parameters, such as plasma heating scheme and fuelling, on the appearance of this discrepancy. Our analysis shows that the appearance of the discrepancy between the temperature diagnostics is correlated with the appearance of a high energy tail in the ion distribution function. © 2009 World Scientific Publishing Co. Pte. Ltd.
|Publication status||Published - 2009|
|Event||15th Joint Workshop on Electron Cyclotron Emission, ECE 2008 and Electron Cyclotron Heating, ECH 2008 - , United States|
Duration: 1 Jan 2009 → …
|Conference||15th Joint Workshop on Electron Cyclotron Emission, ECE 2008 and Electron Cyclotron Heating, ECH 2008|
|Period||1/1/09 → …|
All Science Journal Classification (ASJC) codes
- Atomic and Molecular Physics, and Optics
De La Luna, E., Farina, D., Figini, L., Grosseti, G., Nowak, S., Sozzi, C., ... Johnson, T. (2009). Recent results on the discrepancy between electron temperature measurements in high temperature plasmas in jet. Paper presented at 15th Joint Workshop on Electron Cyclotron Emission, ECE 2008 and Electron Cyclotron Heating, ECH 2008, United States.