Summary
This paper describes the engineering development and validation of a vibration isolation system designed to protect a cryogenic microcalorimeter spectrometer (SXS) aboard the ASTRO-H satellite from micro-vibrations generated by onboard cryocoolers. The authors document how micro-vibration degraded the energy resolution of the engineering model and how the isolation system mitigated this problem, with performance verified through ground testing and confirmed by consistent in-orbit behaviour. The work demonstrates the critical role of mechanical isolation in maintaining detector performance in extreme thermal and vibrational environments.
Key measures
Energy resolution of the SXS detector; micro-vibration isolation performance; detector performance under ambient, thermal-vacuum, and in-orbit conditions
Outcomes reported
The study reports the design, testing, and in-orbit performance of a vibration isolation system for cryocoolers integrated with a microcalorimeter-type soft X-ray spectrometer aboard the ASTRO-H spacecraft. Performance was verified across ambient, thermal-vacuum, and in-orbit conditions, demonstrating no detectable degradation in detector energy resolution.
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