1 Electron velocity distributions and energy deposition of ECW Two set of soft X-ray spectra detection system consist of high performance sillicon drift detectors (SDD) , high speed A/D transform and processing soft...1 Electron velocity distributions and energy deposition of ECW Two set of soft X-ray spectra detection system consist of high performance sillicon drift detectors (SDD) , high speed A/D transform and processing software, software pulse height analyzer (SPHA). They are installed at mid plane ( r=0 ) and undermid plane ( r=-16.4 cm ) of HL-2A tokamak respectively to measure the time evolution of soft X-ray spectra. According to spectrum, the thermal electron and superthermal electron temperatures are derived. Because of the ratio of peak counts to background counts is very high (p/b 〉1 400-3000 ) ,展开更多
文摘1 Electron velocity distributions and energy deposition of ECW Two set of soft X-ray spectra detection system consist of high performance sillicon drift detectors (SDD) , high speed A/D transform and processing software, software pulse height analyzer (SPHA). They are installed at mid plane ( r=0 ) and undermid plane ( r=-16.4 cm ) of HL-2A tokamak respectively to measure the time evolution of soft X-ray spectra. According to spectrum, the thermal electron and superthermal electron temperatures are derived. Because of the ratio of peak counts to background counts is very high (p/b 〉1 400-3000 ) ,