19 February 2015 A new designed impedance matching circuit used for gated framing camera
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Proceedings Volume 9449, The International Conference on Photonics and Optical Engineering (icPOE 2014); 94491I (2015) https://doi.org/10.1117/12.2077094
Event: The International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference (icPOE 2014), 2014, Xi'an, China
Abstract
Framing camera based on gated Micro-channel plate (MCP) was widely used in inertial confinement fusion (ICF) and Z-pinch because of its ultrafast time-resolve. Electrons with imaging information are multiplied when the HV pulse propagating through the MCP strip line. Obviously, the HV pulse was used as a shutter here, then the exposure time of the imagine will be determined by the width of the pulse. Theoretical analysis indicates that thegating pulse(200ps) has a bandwidth of 5GHz, thus, impedance match in the propagating path of the pulse will be very important. Impedance mismatch will cause reflecting of the pulse and decrease the transmission efficiency. This will cause un-uniformity of the dynamic gain of the MCP, and finally resulting in imagedistortion. A new designed impedance matching circuit is developed in this paper. Simulated results showedthatthe newdesignedimpedance matching circuit couldreduce the reflection of thegating pulse significantly, and dynamicgain uniformity of the MCP was increased simultaneously
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Bingli Zhu, Xiaohong Bai, Yonglin Bai, Yongsheng Gou, Baiyu Liu, Bo Wang, Junjun Qin, "A new designed impedance matching circuit used for gated framing camera", Proc. SPIE 9449, The International Conference on Photonics and Optical Engineering (icPOE 2014), 94491I (19 February 2015); doi: 10.1117/12.2077094; https://doi.org/10.1117/12.2077094
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