Abstract
A new method for the evaluation of the vacuum boundary in a Tokamak is introduced. It is a two-step iterative algorithm that converges to the actual value of the boundary location only after a few iterations. The key point in this method is to solve a well-posed boundary value problem that satisfies a set of exact boundary conditions. A Cauchy problem in steady heat-conduction problem is used to explain the method first. Then, inverse evaluation of the vacuum boundary location in circular as well as D-shaped Tokamaks are considered. For circular Tokamak, the method does not require any regularization. The algorithm is quite simple and very effective. Numerical examples are presented to study the performance of the algorithm in the presence of noise.
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