Development of multi-spectral X-ray time-integrated imaging system on primary test stand

According to the requirements of Z-pinch experiments on primary test stand(PTS) facility, we develop a three-channel, time-integrated X-ray imaging system with different spectral responses. This imaging system consists of a pinhole array, a pipe through which the X-ray propagates and imaging plates. The spectral ranges of the three channels are 277 eV, 700 eV and 800 eV, corresponding to pinholes with diameter of 100 m，100 m and 50 m respectively. This system has a magnification of 2, and a spatial resolution of 0.2 mm. This system is tested on PTS and the results show that it meets the diagnostic requirements of Z-pinch experiments on PTS very well, AND can improve the spectral coverage and the image resolution of the low photon energy channel at the same time.