Innovative microchannel plate with reformulation of composition and modification of microstructure

Jingsheng Pan; Jingwen Lv; S. A. Kesaev; Shulin Liu; Zhanying Liu; Junguo Li; Xiaoqin Chong; Detan Shu

doi:10.1117/12.829493

6 August 2009 Innovative microchannel plate with reformulation of composition and modification of microstructure

Jingsheng Pan, Jingwen Lv, S. A. Kesaev, Shulin Liu, Zhanying Liu, Junguo Li, Xiaoqin Chong, Detan Shu

Proceedings Volume 7384, International Symposium on Photoelectronic Detection and Imaging 2009: Advances in Imaging Detectors and Applications; 738402 (2009) https://doi.org/10.1117/12.829493
Event: International Symposium on Photoelectronic Detection and Imaging 2009, 2009, Beijing, China

Abstract

The signal-to-noise ratio (SNR) and mean time to failure (MTTF) are two important attributes to describe the performance and operation life of an image intensifier. The presents of the ion barrier film (IBF) in Gen. III image intensifier, which used to suppress MCP's ion feedback, while dramatically improve the MTTF but significantly reduce the SNR, so more completely diminishing the ion poisoning source within the channels of MCP are crucial for improved Gen. III; image intensifier to thinned thickness IBF and achieving this two conflicting attributes promotion simultaneously. This research was originally initiated to develop a MCP with glass composition redesigned specially for GaAs photocathode image intensifier, proved which can be imposed an exceedingly intensive electron bombard degassing but without suffering a fatal gain degrade, and had achieved significantly improved SNR of Gen. III image intensifier but with a short distance to meet the lifetime success, so that our research work step forward to intent upon the restriction of ion poisoning source formation within the MCP substrate, we reformulated the MCP glass composition, and modified the microstructure of this MCP glass substrate though a glass-crystal phase transition during the MCP fabricate heating process, we present an innovative MCP based on a glass-ceramic substrate, with reformulated composition and close-linked network microstructure mix with many of nanometer size crystal grains, provide this MCP with sustainable high gain, lower ion feedback and less outgasing performance, this glass-ceramic MCPs are assembled to Gen. III image intensifiers which results showing promoting both the MTTF and SNR of Gen. III image intensifier.

Citation Download Citation

Jingsheng Pan, Jingwen Lv, S. A. Kesaev, Shulin Liu, Zhanying Liu, Junguo Li, Xiaoqin Chong, and Detan Shu "Innovative microchannel plate with reformulation of composition and modification of microstructure", Proc. SPIE 7384, International Symposium on Photoelectronic Detection and Imaging 2009: Advances in Imaging Detectors and Applications, 738402 (6 August 2009); https://doi.org/10.1117/12.829493

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