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从室温到毫开尔文温度具有稳定响应的低温地震检波器

A Cryogenic Geophone with stable response from Room Temperature to millikelvin

Stefano Pirro, Marco Ricci, Simone Cioccolini

arXiv 2610.05101首次发表:更新:

发表机构

INFN Laboratori Nazionali del Gran Sasso; INFN Sezione di Roma(意大利国家核物理研究所大萨索国家实验室; 意大利国家核物理研究所罗马分部)

机构由 AI 辅助整理,请以论文原文为准。

AI 中文总结

针对低温制冷机振动干扰问题,本文开发了从室温到约10毫开尔文温度范围内响应几乎与温度无关的低温地震检波器,克服了商业传感器低温校准的系统误差。

AI 中文摘要

随着脉冲管制冷机的发展,近年来低温环境的可用性和使用量呈指数级增长。然而,自机械冷却装置引入以来,用其替代液氦凸显了衰减制冷机自身产生的机械振动的需求。对于能够达到几毫开尔文量级温度的稀释制冷机而言,机械振动到达实验装置的问题在许多情况下极为关键。这促使人们开发了多种定制化实验方法来衰减振动。然而,在低温尤其是超低温下对振动进行惯性测量一直依赖定制传感器,因为目前尚无商业上可用的、经过校准的仪器用于这些温度下的测量。尽管如此,许多研究小组使用商业地震检波器并在低温下重新校准。然而,这种方法并非没有系统误差,并且在定量评估绝对响应方面存在显著挑战。在本工作中,我们描述了低温地震检波器的开发,其响应几乎与温度无关,覆盖从室温低至约10毫开尔文的温度范围。

英文摘要

With the development of pulse-tube cryocoolers, the availability and use of low-temperature environments have increased exponentially in recent years. However, replacing liquid helium with a mechanical cooling device has, since its introduction, highlighted the need to attenuate the mechanical vibrations generated by the cryocooler itself. In the case of dilution refrigerators, which are capable of reaching temperatures on the order of few mK, the issue of mechanical vibrations reaching the experimental setup is, in many situations, extremely critical. This has led to the development of several customized experimental approaches aimed at attenuating vibrations. However, the inertial measurement of vibrations at cryogenic and, in particular, ultracryogenic temperatures has relied on customized sensors, since no commercially available, calibrated instruments exist for measurements at these temperatures. Nevertheless, many research groups employ commercial geophones that are recalibrated at low temperatures. This approach, however, is not free from systematic errors and presents significant challenges in quantitatively assessing the absolute response. In this work, we describe the development of cryogenic geophones exhibiting an almost temperature-independent response, from room temperature down to approximately 10 mK.

论文原文

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