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Gas-Jet Activation Method for a Fusion Power Measurement on ITER-FEAT

Yu. A. Kaschuck, G. G. Gladush, A. V. Krasilnikov, N. B. Rodionov, V. V. Frunze, C. I. Walker

Fusion Science and Technology / Volume 43 / Number 2 / March 2003 / Pages 176-183

Technical Paper /

A new method of fusion power measurement based on flow neutron-activation analysis has been examined. A single-dimension model has been applied to consider mass transfer and diffusion of radioactive fluid matter being irradiated to a fast neutron flux while traveling through a pipe. This model enables evaluation of a temporal resolution and an achievable sensitivity for the proposed method. The application of light elements B, C, N, O, F, and Ne was analyzed. Numerical simulation has demonstrated that a gas-jet activation system should provide fusion power measurement for ITER-FEAT conditions in the range from 2 to 500 MW with a temporal resolution of 10 ms and 10% accuracy.

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