Method for Calculating Spatial Resolution of Heavy Ion Beam Probing for the T-15MD Tokamak

Abstract

Heavy ion beam probing (HIBP) is a unique diagnostic technique that enables independent and simultaneous measurement of the plasma electric potential \(\varphi \) and its fluctuations \(\tilde {\varphi }\), as well as the electron density fluctuations \({{\tilde {n}}_{e}}\) and poloidal magnetic field \({{\tilde {B}}_{{{\text{pol}}}}}\) in the hot plasma region. A method for calculating the spatial resolution of the designed HIBP diagnostics for the T-15MD tokamak has been presented. The dependence of the size of the measurement area point on the width of the input slits in the energy analyzer has been studied.