Calibration of Advanced LIGO Data

先进 LIGO 数据校准

• 批准号: 1506360
• 负责人: Xavier Siemens
• 金额: $ 7.5万
• 依托单位: University of Wisconsin-Milwaukee
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2015
• 资助国家: 美国
• 起止时间: 2015-12-01 至 2017-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1506360&HistoricalAwards=false
• 关键词: Calibration; Advanced; LIGO; Data

This award supports the calibration of Advanced LIGO data. Calibration is the essential first step in the analysis of gravitational wave data, and therefore in the LIGO critical path. Current LIGO sensitivities have already surpassed those of Initial LIGO, and the first observing run scheduled for late 2015 is almost a factor of four better than Initial LIGO. A detection of gravitational waves from a binary coalescence in the near future is therefore a distinct possibility. After a period of commissioning and observing runs, Advanced LIGO is expected to observe gravitational waves routinely. These first detections will simultaneously test our understanding of fundamental physics and provide a new means to study the universe.This award supports work to develop and maintain the official Advanced LIGO time-domain calibration pipeline. This pipeline will deliver calibrated data with sub-second latencies to gravitational wave data analysts. The team will generate the digital filters required for the calibration, track changes in the instrument that affect the calibration, work on the development of a zero-latency calibration system, help produce the calibration error budget, automate calibration updates, and increase the robustness of the entire calibration procedure.

该奖项支持对高级LIGO数据进行校准。定标是分析引力波数据的重要第一步，因此也是LIGO关键路径的第一步。目前的LIGO灵敏度已经超过了最初的LIGO，计划在2015年底进行的第一次观测运行几乎是最初LIGO的四倍。因此，在不久的将来探测到来自双星聚结的引力波是一种明显的可能性。经过一段时间的调试和观测运行后，高级LIGO预计将定期观测引力波。这些首次探测将同时测试我们对基础物理的理解，并提供一种研究宇宙的新手段。该奖项支持开发和维护官方高级LIGO时域校准管道的工作。这条管道将向引力波数据分析员提供亚秒级延迟的校准数据。该团队将生成校准所需的数字滤波器，跟踪影响校准的仪器变化，致力于开发零延迟校准系统，帮助产生校准误差预算，自动化校准更新，并提高整个校准程序的稳健性。