基于SQUID且具有原位可调增益的超导微量热计
SQUID-based superconducting microcalorimeter with in-situ tunable gain
AI总结：
本文提出一种基于SQUID且具有原位可调增益的超导微量热计，利用超导体临界温度附近磁穿透深度的强温度依赖性，原型测量无磁滞效应，预测可实现约300meV的竞争性能量分辨率。
摘要：
低温微量热计因其出色的能量分辨率和接近100%的探测效率的独特组合，是X射线光谱学的杰出工具。虽然成熟的微量热计概念已经证明了令人印象深刻的性能，但其能量分辨率仍有待提高，以与尖端波长色散光栅或晶体光谱仪竞争。因此，我们提出了一种创新的基于SQUID且具有原位可调增益的超导微量热计，作为替代概念，其基于在接近其临界温度下运行的超导体的磁穿透深度的强温度依赖性。使用原型设备的测量显示没有任何磁滞效应的迹象，而磁滞效应常常会损害超导微量热计的性能。此外，我们对可实现能量分辨率的预测表明，通过适当组合吸收体和传感器材料，应能轻松实现具有竞争力的能量分辨率O(300meV)。
英文摘要：
Cryogenic microcalorimeters are outstanding tools for X-ray spectroscopy due to their unique combination of excellent energy resolution and close to 100% detection efficiency. While well-established microcalorimeter concepts have already proven impressive performance, their energy resolution has yet to improve to be competitive with cutting-edge wavelength-dispersive grating or crystal spectrometers. We hence present an innovative SQUID-based superconducting microcalorimeter with an in-situ tunable gain as alternative concept that is based on the strong temperature dependence of the magnetic penetration depth of a superconductor operated close to its critical temperature. Measurements using a prototype device show no sign for any hysteresis effects that often spoil the performance of superconducting microcalorimeters. Moreover, our predictions of the achievable energy resolution show that a competitive energy resolution O(300meV) with a suitable combination of absorber and sensor material should be easily possible.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
