Gas outgassing and mitigation in hemispherical resonator gyroscope for high vacuum maintenance

IF 3.9 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Vacuum Pub Date : 2025-09-11 DOI:10.1016/j.vacuum.2025.114732

Shihao Zhu , Yiming Luo , Yonglei Jia , Yao Pan , Hui Luo , Bing Lei , Bin Zhang

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Abstract

The outgassing characteristics of adhesives and the sorption characteristics of getters inside the hemispherical resonator gyroscope (HRG) were investigated. For this purpose, four types of adhesives required for the assembly of the HRG were each prepared in a separate glass chamber. The outgassing components and rates of the adhesives were evaluated using a quadrupole mass spectrometer and a real-time vacuum pressure monitoring system, respectively. In addition, the pumping speeds and sorption capacities for H₂ and CO of three types of getters potentially employed in the HRG were tested via the constant-pressure method. Consequently, by integrating the adhesive with the lowest outgassing rate and the getter with the most comparative advantage, a vacuum maintenance experiment within a cavity of equal volume to the HRG demonstrated sustained pressure levels less than 10⁻⁴ Pa over 2500 h. The investigation illustrated in this paper presents a practical strategy for prolonging high vacuum conditions in HRGs and yields a novel scheme for the long-term high vacuum maintenance in the HRG microcavity.

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用于高真空维护的半球形谐振陀螺仪放气和减气

研究了半球形谐振陀螺仪内胶粘剂的放气特性和吸光剂的吸光特性。为此，在一个单独的玻璃室中分别制备了四种用于HRG组装所需的粘合剂。使用四极杆质谱仪和实时真空压力监测系统分别评估了胶粘剂的放气成分和放气率。此外，通过恒压法测试了三种可能用于HRG的吸附剂的泵速和对H2和CO的吸附能力。因此，通过将放气率最低的粘合剂和最具比较优势的吸气剂结合起来，在与HRG体积相当的腔内进行了真空维持实验，结果表明，在2500小时内，压力水平持续低于10 - 4 Pa。本文的研究提出了延长HRG高真空条件的实用策略，并提出了HRG微腔长期高真空维持的新方案。

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

Vacuum 工程技术-材料科学：综合

CiteScore

6.80

自引率

17.50%

发文量

审稿时长

34 days

期刊介绍： Vacuum is an international rapid publications journal with a focus on short communication. All papers are peer-reviewed, with the review process for short communication geared towards very fast turnaround times. The journal also published full research papers, thematic issues and selected papers from leading conferences. A report in Vacuum should represent a major advance in an area that involves a controlled environment at pressures of one atmosphere or below. The scope of the journal includes: 1. Vacuum; original developments in vacuum pumping and instrumentation, vacuum measurement, vacuum gas dynamics, gas-surface interactions, surface treatment for UHV applications and low outgassing, vacuum melting, sintering, and vacuum metrology. Technology and solutions for large-scale facilities (e.g., particle accelerators and fusion devices). New instrumentation ( e.g., detectors and electron microscopes). 2. Plasma science; advances in PVD, CVD, plasma-assisted CVD, ion sources, deposition processes and analysis. 3. Surface science; surface engineering, surface chemistry, surface analysis, crystal growth, ion-surface interactions and etching, nanometer-scale processing, surface modification. 4. Materials science; novel functional or structural materials. Metals, ceramics, and polymers. Experiments, simulations, and modelling for understanding structure-property relationships. Thin films and coatings. Nanostructures and ion implantation.