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摘要
Remote signal self-test function of radial X-ray camera in ITER is realized using laser diode. The optical path between detector and laser diode is designed with diffuse plane, the driving circuit module with real-time response function is designed based on the field programmable gate array (FPGA), the design of remote switching, controlling output luminous intensity and current-limiting protection is achieved with LABVIEW software, and the control accuracy reaches one thousandth levels. The function of sending a narrow pulse current signal is reserved in the FPGA code, and the narrowest pulse reaches within 100ns, which can be used to measure the response rate of detection system, and measure the background noise and baseline offset. ? 2022 Yuan Zi Neng Chuban She.
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