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arXiv 2411.00501physics.ins-dethep-ex
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用于γ射线能谱高分辨率定时的紧凑型模拟恒比甄别器的设计与实现

Design and Implementation of a Compact Analog Constant Fraction Discriminator for High-Resolution Timing in Gamma-Ray Spectroscopy

Michael Wiebusch

AI总结:

本研究设计了一款集成16个分立模拟恒比甄别器的紧凑型γ能谱定时前端卡,采用极简无运放的射频晶体管加LVDS接收器方案,兼顾成本与精度,适用于核寿命测量的PMT信号读出。

摘要:

本工作提出了一种定制化模拟前端卡,旨在读出与溴化镧闪烁体耦合的光电倍增管(PMT)的信号。该卡将16个分立模拟恒比甄别器(CFD,constant fraction discriminator)集成在一块12×10 cm的紧凑型电路板上,可为核寿命测量提供精确的定时信息。该设计兼具成本效益,采用现成的分立元件;同时通过使用微型同轴连接器和线缆作为延迟元件实现了紧凑性。本文重点介绍了一种独特且极简的模拟成形/甄别器设计:该设计未使用运算放大器,仅用少量射频晶体管和LVDS接收器替代比较器即可实现功能。

英文摘要:

This work presents a custom analog front-end card designed for the read-out of PMTs coupled to lanthanum bromide scintillators. It integrates 16 discrete analog constant fraction discriminators (CFDs) on a compact 12x10 cm board, providing precise timing information for nuclear lifetime measurements. The design emphasizes cost-effectiveness, utilizing off-the-shelf discrete components, as well as compactness, achieved by using miniature coaxial connectors and cables as delay elements. The focus of this paper lies on the unusual and extremely minimalist analog shaper/discriminator design which is devised without operational amplifiers, making use of only a handful of RF transistors and LVDS receivers in place of comparators.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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