用于月球十分之一赫兹引力波探测的扭转-X地震仪
Torsional-X Seismometer for Lunar Decihertz Gravitational-Wave Detection
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中文总结 AI 辅助
研究旨在探测月球十分之一赫兹引力波，提出紧凑的单片熔融石英扭转-X地震仪，通过高压双光纤悬架改进转换，其毫赫兹级共振等性能有近一个数量级提升，展示室温真空原型并得出未来月球实施方案要求。
中文摘要 AI 辅助
月球引力波天线概念将月球用作配备精密地震仪的共振探测器，针对地基和天基天文台之间的十分之一赫兹频段。我们提出了一种紧凑的单片熔融石英扭转-X地震仪，通过高压双光纤悬架重新设计了适用于该频段的加速度到旋转转换。其设计的毫赫兹级共振和超低机械耗散，与现有月球地震仪概念相比，在0.1Hz左右实现了近一个数量级的改进。实现此性能需要在室温下运行，此时熔融石英表现出低机械损耗以及次要的驱动噪声。我们展示了一个室温真空原型，验证了工作原理和核心机械设计，并得出了未来能够接近目标灵敏度的月球实施方案的要求。
英文摘要
The lunar gravitational-wave antenna concept uses the Moon as a resonant detector instrumented with precision seismometers, targeting the decihertz band between ground- and space-based observatories. We propose a compact monolithic fused-silica torsional-X seismometer that re-engineers garden-gate acceleration-to-rotation transduction for this regime through a high-tension dual-fiber suspension. Its designed millihertz-scale resonance and ultra-low mechanical dissipation enable a nearly order-of-magnitude improvement around $0.1\,\mathrm{Hz}$ compared with existing lunar seismometer concepts. Achieving this performance requires room-temperature operation, where fused-silica exhibits low mechanical loss, together with subdominant actuation noise. We demonstrate a room-temperature vacuum prototype validating the operating principle and core mechanical design, and derive requirements for a future lunar implementation capable of approaching the target sensitivity.
