新型二氧化碳基气体混合物的ATLAS RPC探测器和1级介子桶触发器的性能

IF 1.5 3区物理与天体物理 Q3 INSTRUMENTS & INSTRUMENTATION

Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment Pub Date : 2025-04-10 DOI:10.1016/j.nima.2025.170482

Shixiang Su, ATLAS Collaboration

引用次数: 0

摘要

在ATLAS实验中，利用电阻板室（RPCs）在桶区触发μ子。目前的RPC探测器使用含有C2H2F4和SF6的氟利昂气体混合物，这两种气体都具有很高的全球变暖潜力。为了减少对环境的影响和运营成本，探索可替代的环保气体混合物至关重要。2023年8月，质子-质子数据采集完成后，ATLAS协作团队将标准气体混合物（94.7% C2H2F4, 5.0% i-C4H10, 0.3% SF6）替换为添加了二氧化碳的新混合物：64% C2H2F4, 30% CO2, 5.0% i-C4H10, 1% SF6。本文介绍了新型混合物的RPC探测器的性能，重点介绍了探测器电流密度、簇大小和一级介子桶触发系统的效率。

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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Performance of the ATLAS RPC detector and Level-1 muon barrel trigger with a new CO2-based gas mixture

Resistive Plate Chambers (RPCs) are used in the ATLAS experiment for trigger on muons in the barrel region. The current RPC detectors operate with a Freon-based gas mixture containing

C_{2} H_{2} F_{4}

and

{SF}_{6}

, both of which have a high global warming potential. To reduce environmental impact and operating costs, it is essential to explore alternative, environmentally friendly gas mixtures. In August 2023, after the completion of proton–proton data-taking, the ATLAS collaboration replaced the standard gas mixture (94.7%

C_{2} H_{2} F_{4}

, 5.0%

i - C_{4} H_{10}

, 0.3%

{SF}_{6}

) with a new mixture with

{CO}_{2}

added: 64%

C_{2} H_{2} F_{4}

, 30%

{CO}_{2}

, 5.0%

i - C_{4} H_{10}

, 1%

{SF}_{6}

. This paper presents the performance of the RPC detector with the new mixture, focusing on detector current density, cluster size, and the efficiency of the Level-1 muon barrel trigger system.

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来源期刊

Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment 物理-光谱学

CiteScore

3.20

自引率

21.40%

发文量

787

审稿时长

1 months

期刊介绍： Section A of Nuclear Instruments and Methods in Physics Research publishes papers on design, manufacturing and performance of scientific instruments with an emphasis on large scale facilities. This includes the development of particle accelerators, ion sources, beam transport systems and target arrangements as well as the use of secondary phenomena such as synchrotron radiation and free electron lasers. It also includes all types of instrumentation for the detection and spectrometry of radiations from high energy processes and nuclear decays, as well as instrumentation for experiments at nuclear reactors. Specialized electronics for nuclear and other types of spectrometry as well as computerization of measurements and control systems in this area also find their place in the A section. Theoretical as well as experimental papers are accepted.