10月21日 Physics basis of the differences of the electron temperature measurements by ECE emission spectroscopy and Thomson scattering

报告题目：Physics basis of the differences of the electron temperature measurements by ECE emission spectroscopy and Thomson scattering.

报告时间：10月21日（星期二）上午9:00

报告地点：EAST大厅3楼会议室

主持人：臧庆 研究员

报告人简介：Francesco Paolo Orsitto, Scientific Advisor in ENEA Nuclear Department.

Achievements: The High Beta Frascati Tokamak Design was carried out. DEMO design with its diagnostis equipment was studied.

Studies on Fusion-Fission Hybrid Reactors( FFHR) were carried out : in particular the tritium production was treated.

报告简介：

The talk describes differences of Te on JET high performence plasmas, measured by ECE (Martin-Puplett interferometer) and High Resolution Thomson Scattering(HRTS) diagnostic . The physical basis of these differences is discussed. The HRTS system gives independent information on these differences, having shorter space resolution(2cm), and faster repetition time(20Hz) on a different line of sight (close to the magnetic centre) : HRTS measurements confirm the trends observed using LIDAR TS. In addition, changes are detected on the ratio Te_ECE/ Te_TS(HRTS) during the evolution of fast-ion linked MHD in DT hybrid scenario: supporting the scheme of non-maxwellian EDF. Models link these differences to the physical nature of the interaction of the heating systems with the electrons and then to the non-maxwellian nature of the electron velocity distribution function(EDF).