Measurement of isotopic separation of argon with the prototype of the cryogenic distillation plant Aria for dark matter searches
Measurement of isotopic separation of argon with the prototype of the cryogenic distillation plant Aria for dark matter searches
复制标题
使用用于暗物质搜索的低温蒸馏装置 Aria 原型测量氩的同位素分离
DOI：
10.1140/epjc/s10052-023-11430-0
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发表时间：
2023
期刊：
影响因子：
--
通讯作者：
Ave, M.
中科院分区：
文献类型：
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作者：
Aaron, E.;Agnes, P.;Ahmad, I.;Albergo, S.;Albuquerque, I. F.;Alexander, T.;Alton, A. K.;Amaudruz, P.;Atzori Corona, M.;Ave, M.
位于意大利撒丁岛的Aria低温蒸馏工厂是意大利INFN Nazionali del Gran Sasso的WIMP暗物质搜索DarkSide-20 k实验计划的关键组成部分。Aria被设计用于净化从美国科罗拉多的地下威尔斯井中提取的氩气，并将其用作DarkSide-20 k靶材料，达到探测器级质量。在本文中，我们报告的第一个测量氩同位素分离蒸馏与26米高的咏叹调原型。我们讨论了柱的操作参数的测量和三个稳定的氩同位素：Ar，Ar和Ar的同时分离的观察。我们还提供了一个详细的比较与商业过程模拟软件的实验结果。氩同位素分离的测量是该项目的一项重大成就，建立在2019年使用相同设备成功进行氮同位素分离的初步示范的基础上。
The Aria cryogenic distillation plant, located in Sardinia, Italy, is a key component of the DarkSide-20k experimental program for WIMP dark matter searches at the INFN Laboratori Nazionali del Gran Sasso, Italy. Aria is designed to purify the argon, extracted from underground wells in Colorado, USA, and used as the DarkSide-20k target material, to detector-grade quality. In this paper, we report the first measurement of argon isotopic separation by distillation with the 26 m tall Aria prototype. We discuss the measurement of the operating parameters of the column and the observation of the simultaneous separation of the three stable argon isotopes: Ar, Ar, and Ar. We also provide a detailed comparison of the experimental results with commercial process simulation software. This measurement of isotopic separation of argon is a significant achievement for the project, building on the success of the initial demonstration of isotopic separation of nitrogen using the same equipment in 2019.