Mass production of RPC readout panels for ATLAS Phase-II upgrade and R&D on thin gas gap production at USTC

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 : 2025-03-12 DOI:10.1016/j.nima.2025.170400

Dongshuo Du, on behalf of the ATLAS Muon Collaboration

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引用次数: 0

Abstract

In order to accommodate the High-Luminosity Large Hadron Collider, the current ATLAS Muon system needs a significant upgrade during the Long Shutdown-3. For the muon trigger, three layers of thin-gap Resistive Plate Chambers (RPCs) will be added to the Barrel Inner (BI) region. This new generation of RPCs features a thin-gap design that significantly enhances their rate capabilities. However, it poses significant challenges for detector production, Quality Assurance and Quality Control. Our Chinese ATLAS group undertook the construction of 912 readout panels, the fabrication of 72 BI gas gaps, and the assembly of 360 singlets for the upgrade. To successfully implement the BI-RPC project in China, we have developed and refined a vacuum-bag-based method for producing honeycomb readout panels in our laboratory. This method is also utilized in the production of readout panels in the Chinese industry. The speed and quality of readout panel production have significantly improved. The procedures for gas gap production and the assembly of RPC singlets are outlined in detail. The gas gaps are treated with oil at a temperature of around 40 degrees Celsius and flushed with heptane before the application of linseed oil. This process can greatly enhance the quality of linseed oiling on the inner surfaces of the Bakelite RPC. The quality of the gas gaps is assessed and the results are very promising.

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为了适应高亮度大型强子对撞机，目前的 ATLAS µ 介子系统需要在长期关闭-3 期间进行重大升级。在μ介子触发器方面，将在管筒内腔（BI）区域增加三层薄间隙电阻板腔（RPC）。新一代 RPC 采用薄间隙设计，大大提高了其速率能力。然而，这也给探测器的生产、质量保证和质量控制带来了巨大挑战。我们的中国ATLAS小组承担了912块读出板的建造、72个BI气隙的制造和360个单片的组装工作。为了在中国成功实施 BI-RPC 项目，我们在实验室中开发并改进了一种基于真空袋的蜂窝读数板生产方法。这种方法也用于中国工业的读数板生产。读数板的生产速度和质量都有了显著提高。本文详细介绍了气隙生产和 RPC 单片组装的程序。气隙在 40 摄氏度左右的温度下进行油处理，并在涂抹亚麻籽油之前用庚烷冲洗。这一工艺可大大提高亚麻籽油在电木 RPC 内表面的涂油质量。对气体间隙的质量进行了评估，结果非常理想。

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

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.