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Development of an ultrafast detector and demonstration of its oscillographic application 被引量:5
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作者 Hou-Zhi Cai Qiu-Yan Luo +3 位作者 Kai-Xuan Lin Dong Wang Jun-Kun Huang Jin-Yuan Liu 《Nuclear Science and Techniques》 SCIE EI CAS CSCD 2022年第6期54-61,共8页
A dilation X-ray detector(DIXD)based on time dilation and microchannel plate(MCP)gated technology has been reported.The DIXD passes a driving pulse along the transmission photocathode(PC)to obtain a dilated electron s... A dilation X-ray detector(DIXD)based on time dilation and microchannel plate(MCP)gated technology has been reported.The DIXD passes a driving pulse along the transmission photocathode(PC)to obtain a dilated electron signal and finally achieves a high time resolution of 12 ps.Furthermore,the waveform of the PC driving pulse can be obtained using the DIXD,and a DIXD oscillographic function can be obtained.An experiment is presented to demonstrate the DIXD oscilloscope.The waveform of the PC driving pulse from points t_(1) to t_(12) is achieved by the DIXD.The waveform agrees well with that measured by a high-speed oscilloscope with a difference of less than 6%.The maximum theoretical bandwidth of the DIXD oscilloscope is theoretically studied.The bandwidth is limited by the potential difference between the PC and mesh.When the potential difference is 3.4 kV,the theoretical limiting bandwidth is 1000 GHz.The bandwidth increases with an increase in the potential difference. 展开更多
关键词 Inertial confinement fusion ultrafast diagnosis Dilation X-ray detector X-ray framing camera Microchannel plate
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Ultrafast two-dimensional x-ray imager with temporal fiducial pulses for laser-produced plasmas
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作者 刘正东 仲佳勇 +21 位作者 远晓辉 张雅芃 姚嘉文 马作霖 徐向晏 薛彦华 张喆 袁大伟 张敏睿 李炳均 谷昊琛 戴羽 张成龙 董玉峰 周鹏 马鑫杰 马云峰 白雪洁 刘高扬 田进寿 赵刚 张杰 《Chinese Physics B》 SCIE EI CAS CSCD 2023年第11期214-219,共6页
It is challenging to make an ultrafast diagnosis of the temporal evolution of small and short-lived plasma in two dimensions. To overcome this difficulty, we have developed a well-timed diagnostic utilizing an x-ray s... It is challenging to make an ultrafast diagnosis of the temporal evolution of small and short-lived plasma in two dimensions. To overcome this difficulty, we have developed a well-timed diagnostic utilizing an x-ray streak camera equipped with a row of multi-pinhole arrays. By processing multiple sets of one-dimensional streaked image data acquired from various pinholes, we are capable of reconstructing high-resolution two-dimensional images with a temporal resolution of 38 ps and a spatial resolution of 18 μm. The temporal fiducial pulses accessed from external sources can advance the precise timing and accurately determine the arrival time of the laser. Moreover, it can correct the nonlinear sweeping speed of the streak camera. The effectiveness of this diagnostic has been successfully verified at the Shenguang-II laser facility,providing an indispensable tool for observing complex physical phenomena, such as the implosion process of laser-fusion experiments. 展开更多
关键词 ultrafast diagnosis double-cone ignition x-ray streak camera pinhole array temporal fiducial pulses
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