In a laser inertial confinement fusion (ICF) facility, an x-ray diode (XRD) detector is mainly used for precise measurement of black cavity radiation flow. The rapid rising time of the XRD detector and the intricate radiation environment of the ICF facility have posed new requirements for the bandwidth and anti-interference performance of signal digitization technologies. The standards are tough for the current recording system to meet. In this paper, based on the anti-interference of digital signals in the radiation field of the ICF facility, we have designed an XRD detector specific transient front-end signal digitizer (TFSD). The digitizer may be put together for consistent shielding in the radiation field since its size matches that of the XRD detector. The test results show that the TFSD has a higher signal input bandwidth than the existing recording method, considerably reduces the effect of pulse radiation field on signal recording, and significantly boosts the accuracy of recording and diagnosis.
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