论文标题
提高低温引力波检测器Kagra的灵敏度的前景
Prospects for improving the sensitivity of the cryogenic gravitational wave detector KAGRA
论文作者
论文摘要
升级以提高重力波检测器的灵敏度，可以更频繁地检测和更精确的源参数估计。与其他晚期干涉探测器（例如高级Ligo和高级处女座）不同，Kagra需要进行升级的不同方法，因为它是唯一采用测试量的低温冷却的检测器。在本文中，我们用专注于不同检测器带的技术描述了可能的Kagra升级，并比较了对紧凑型二元合并的影响。 We show that either fivefold improvement in the $100 M_{\odot}$--$100 M_{\odot}$ binary black hole range, a factor of 1.3 improvement in the binary neutron star range, or a factor of 1.7 improvement in the sky localization of binary neutron stars is well feasible with upgrades that do not require changes in the existing cryogenic or vacuum infrastructure.我们还表明，通过对检测器进行多次升级，可以提高双重宽带灵敏度。
Upgrades to improve the sensitivity of gravitational wave detectors enable more frequent detections and more precise source parameter estimation. Unlike other advanced interferometric detectors such as Advanced LIGO and Advanced Virgo, KAGRA requires different approach for the upgrade since it is the only detector which employs cryogenic cooling of the test masses. In this paper, we describe possible KAGRA upgrades with technologies focusing on different detector bands, and compare the impacts on the detection of compact binary coalescences. We show that either fivefold improvement in the $100 M_{\odot}$--$100 M_{\odot}$ binary black hole range, a factor of 1.3 improvement in the binary neutron star range, or a factor of 1.7 improvement in the sky localization of binary neutron stars is well feasible with upgrades that do not require changes in the existing cryogenic or vacuum infrastructure. We also show that twofold broadband sensitivity improvement is possible by applying multiple upgrades to the detector.
