用于极大型望远镜的MICADO首光成像仪：RAM分析及后续设计与维护策略概述
The MICADO first light imager for the ELT: an overview of the RAM analysis and consequent design and maintenance strategy
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中文总结 AI 辅助
介绍用于极大型望远镜的MICADO首光成像仪，因寿命等要求开展FMECA分析，概述其RAM分析假设与边界，阐述RAM对设计及组件选择使用的影响，报告维护策略以降低仪器停机风险。
中文摘要 AI 辅助
MICADO是为极大型望远镜的首光运行而开发的低温近红外多自适应光学成像相机和光谱仪。它将以“独立”配置运行两年，之后将重新配置为“MICADO - MORFEO”配置。由于其至少十年的寿命要求以及对可用性和可靠性的其他严格要求，引发了细致全面的FMECA分析，主要致力于制定稳健的维护策略。本文概述了MICADO RAM分析的假设和边界，描述了RAM方面如何推动设计选择以及组件的选择和使用，并报告了预防性和预测性维护策略，旨在降低在极大型望远镜高成本运行环境中仪器停机的风险。
英文摘要
MICADO is a cryogenic near infrared Multi-AO Imaging Camera and Spectrometer developed for the first light operations at the ELT. It will operate in a "Standalone" configuration with a Single Conjugate Adaptive Optics module for a nominal period of two years. After this time, the system will be re-arranged in the "MICADO-MORFEO" configuration, being able to switch between the SCAO and a Multi Conjugate Adaptive Optics module in the later phase of the project. The lifetime requirement of minimum ten years, together with other demanding requisites about its availability and reliability triggered a meticulous FMECA analysis mainly focused on developing robust maintenance strategies. In this paper, we outline the assumptions and the boundaries of the MICADO RAM analysis, a collaborative effort involving the Max Planck Institute for the Extraterrestrial Physics, the Laboratoire d'Etudes Spatiales et d'Instrumentation en Astrophysique and the European Southern Observatory, starting from the input provided by all MICADO partners. We describe how RAM aspects drove some design choices as well as the selection and use of components. We report the preventive and predictive maintenance strategies, which we considered to minimize the risk of instrument downtime in the high cost operational context of the ELT.
