Patent ID: 6377657
Filing Date: 2002-04-23
Classification: H05G

Abstract:
A method for calculating a space-time temperature distribution in an anode of an X-ray tube on which electrons are incident, for determining a load of said X-ray tube, comprising the steps of:calculating a short-term temperature boost in a surface layer in and around a focal spot of said electrons on said anode for a time span during and immediately after said electrons are incident on said focal spot according to the heat equation for a homogeneous heat conductor; calculating a long-term temperature distribution in an overall volume of said anode dependent on heat propagation emanating from said focal spot and heat emission from said surface of the anode according to the heat equation for an inhomogeneous heat conductor, and temperature dependently linearizing any non-linear effects in sections of said anode; adding respective results of said calculation of said short-term temperature boost and said calculation for said long-term temperature distribution to determine a calculated temperature distribution on and in said anode; and determining a load on said load dependent on said calculated temperature distribution.