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Calculation of edge ion temperature and poloidal rotation velocity from carbon III triplet measurements on the COMPASS tokamak

Tomeš M., Weinzettl V., Pereira T., Imríšek M., Seidl J.

Nukleonika

2016

Vol. 61, No. 4

443--451

A high-resolution spectroscopic system for the measurements of the CIII triplet at 465 nm was installed at the COMPASS tokamak. The Doppler broadening and shift of the measured spectral lines are used to calculate the edge ion temperature and poloidal plasma rotation. At first, the spectroscopic system based on two-grating spectrometer and the calibration procedure is described. The signal processing including detection and removal of spiky features in the signal caused by hard X-rays based on the difference in the behaviour of Savitzky-Golay and median filters is explained. The detection and position estimation of individual spectral lines based on the continuous wavelet transform is shown. The method of fitting of Gaussians using the orthogonal distance regression and estimation of the error of estimation of the rotation velocity and ion temperature is described. At the end, conclusions about the performance of the spectroscopic system and its shortcomings based on summary of results calculated from 2033 processed spectral lines measured in 61 shots are drawn and the possible enhancements are suggested.

Ocena ładunku azotu i fosforu ze źródeł rolniczych wnoszonego do rzek w zlewni Odry

Mioduszewski W., Zdanowicz A., Dannowski R., Seidl J., Deumlich D., Radczuk L., Kajewski I.

Gospodarka Wodna

2000

Nr 11

417-421

Przedstawiono metodykę i wyniki (w postaci map) obliczeń wielkości jednostkowych ładunków azotu i fosforu wprowadzanych z terenów rolniczych do rzek w ziewni Odry.

The paper presents the method and the results (in the form of maps) of calculations of nitrogen and phosphorus unit loads being introduced to rivers from agricultural areas in the basin of the river Oder.