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Rev Sci Instrum. 2012 Oct;83(10):10E512. doi: 10.1063/1.4734035.

Design and fabrication of a multi-purpose soft x-ray array diagnostic system for KSTAR.

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  • 1Department of Physics, Korea Advanced Institute of Science and Technology, Yuseong-gu, Daejeon, Republic of Korea.


A multi-purpose soft x-ray array diagnostic system was developed for measuring two-dimensional x-ray emissivity profile, electron temperature, Ar impurity transport, and total radiation power. A remotely controlled filter wheel was designed with three different choices of filters. The electron temperature profile can be determined from the ratio of two channels having different thickness of Be layer, and the Ar impurity concentration transport can be determined from a pair of Ar Ross filters (CaF(2) and NaCl thin films). Without any filters, this diagnostic system can also be used as a bolometer.

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