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arXiv 1806.09253physics.ins-det
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基于LAr的直接暗物质探测前端数字模块原型设计

Design of Prototype Front-end Digital Module for Direct Dark Matter Detection based on LAr

X. Zhu, Z. Shen, C. Feng, S. Liu, Q. An

摘要:

液态氩(LAr)具有约40光子/keV的高光产额,是直接探测弱相互作用大质量粒子(WIMP)的有吸引力的目标,WIMP是很有动机的银河系暗物质候选者。研究了一种光电倍增管闪烁读出的LAr暗物质探测器的前端电子学设计,该探测器具有输入动态范围为5 pC ~ 1 nC,分辨力高,可分辨出单个光电子的特点。本文介绍了电子学的重要组成部分--前端数字模块(FDM)的设计。样机采用14位1-GSPS模数转换器(ADC),并在实验室进行了性能测试(如有效位数为10.40 bits@298 MHz)。此外,该原型FDM已经与LAr探测器进行了合作测试,并给出了测试结果。

英文摘要:

Liquid argon (LAr) with a high light yield of approximately 40 photons per keV is an attractive target for the direct detection of weakly interacting massive particles (WIMPs), which are well motivated galactic dark matter candidates. We studies a front-end electronics design for a LAr dark matter detector with the scintillation read out by PMT, which has an input dynamic range from 5pC to 1nC, and high resolution that single photoelectron can be distinguished. In this paper, we present the design of front-end digital module (FDM) which is the important portion of electronics. The prototype FDM is equipped with 14-bit 1-GSPS analog-to-digital converters (ADC), and the performance of prototype FDM had been test in lab (e.g. ENOB is 10.40 bits @298 MHz). Moreover, this prototype FDM had been tested with LAr detector collaboratively and test results are also presented.

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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