Improved and automated krypton assay for low-background xenon detectors with Auto-RGMS

IF 4.2 2区物理与天体物理 Q2 PHYSICS, PARTICLES & FIELDS

The European Physical Journal C Pub Date : 2025-05-26 DOI:10.1140/epjc/s10052-025-14262-2

Matteo Guida, Ying-Ting Lin, Hardy Simgen

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引用次数: 0

Abstract

Ultra-sensitive quantification of trace radioactive krypton-85 (\(^{85}\)Kr) is essential for low-background experiments, particularly for next-generation searches of galactic dark matter and neutrino physics using xenon-based time projection chambers (TPCs). While the rare gas mass spectrometer (RGMS) represents the current state-of-the-art for krypton detection in the field, we are developing a fully automated system (Auto-RGMS) to overcome the limitations of its manual operation. Auto-RGMS incorporates a robust control system for rapid measurements and minimized systematic uncertainties. A primary goal is to reach detection limits in the low parts-per-quadrillion (ppq) range for natural krypton by improving the chromatography stage to enhance the separation of krypton from xenon. Investigations into various adsorbent materials identified two candidates. HayeSep Q offers a 12-fold improvement in chromatographic resolution for xenon/krypton separation compared to the previously used adsorbent. Alternatively, HayeSep D provides a more limited improvement in resolution while allowing a higher measurement frequency because of its moderate retention-induced contamination after each measurement. By automating krypton assays and achieving ppq sensitivity, Auto-RGMS will be an indispensable tool for next-generation detectors, maximizing their scientific potential.

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采用Auto-RGMS对低背景氙气探测器进行改进和自动化的氪分析

痕量放射性氪-85 （\(^{85}\) Kr）的超灵敏量化对于低背景实验至关重要，特别是对于使用基于氙的时间投影室（TPCs）进行下一代银河系暗物质和中微子物理搜索。虽然稀有气体质谱仪（RGMS）代表了该领域目前最先进的氪探测技术，但我们正在开发一种全自动系统（Auto-RGMS），以克服其手动操作的局限性。Auto-RGMS结合了一个强大的控制系统，用于快速测量和最小化系统不确定性。主要目标是通过改进色谱阶段来提高氪与氙的分离，以达到天然氪在低千万亿分之一（ppq）范围内的检测限。对各种吸附剂材料的调查确定了两种候选材料。与以前使用的吸附剂相比，HayeSep Q在氙/氪分离的色谱分辨率方面提高了12倍。另外，HayeSep D提供了更有限的分辨率改进，同时允许更高的测量频率，因为每次测量后其适度的保留引起的污染。通过自动化氪分析和实现ppq灵敏度，Auto-RGMS将成为下一代探测器不可或缺的工具，最大限度地发挥其科学潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

The European Physical Journal C 物理-物理：粒子与场物理

CiteScore

8.10

自引率

15.90%

发文量

1008

审稿时长

2-4 weeks

期刊介绍： Experimental Physics I: Accelerator Based High-Energy Physics Hadron and lepton collider physics Lepton-nucleon scattering High-energy nuclear reactions Standard model precision tests Search for new physics beyond the standard model Heavy flavour physics Neutrino properties Particle detector developments Computational methods and analysis tools Experimental Physics II: Astroparticle Physics Dark matter searches High-energy cosmic rays Double beta decay Long baseline neutrino experiments Neutrino astronomy Axions and other weakly interacting light particles Gravitational waves and observational cosmology Particle detector developments Computational methods and analysis tools Theoretical Physics I: Phenomenology of the Standard Model and Beyond Electroweak interactions Quantum chromo dynamics Heavy quark physics and quark flavour mixing Neutrino physics Phenomenology of astro- and cosmoparticle physics Meson spectroscopy and non-perturbative QCD Low-energy effective field theories Lattice field theory High temperature QCD and heavy ion physics Phenomenology of supersymmetric extensions of the SM Phenomenology of non-supersymmetric extensions of the SM Model building and alternative models of electroweak symmetry breaking Flavour physics beyond the SM Computational algorithms and tools...etc.