Collaborative Research: Cosmic Explorer Optical Design
合作研究:宇宙探索者光学设计
基本信息
- 批准号:2309267
- 负责人:
- 金额:$ 17.23万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2023
- 资助国家:美国
- 起止时间:2023-08-15 至 2026-07-31
- 项目状态:未结题
- 来源:
- 关键词:
项目摘要
The US has played a leading role in the global effort toward the observation of gravitational waves for several decades, resulting in the Nobel Physics Prize in 2017 for the first detection of waves from a binary black hole merger by the Advanced LIGO detectors, and many more astrophysical revelations since. Cosmic Explorer is the means by which the US will maintain that leadership in the decades to come. The Cosmic Explorer concept for a next-generation gravitational wave observatory seeks to answer fundamental questions about our universe such as: How did black holes form throughout cosmic time? What is the physics of extreme matter? What is the true nature of strong gravity? This project supports the conceptual design of the laser interferometers that will enable the Cosmic Explorer gravitational wave detectors to achieve cosmological range and exquisite fidelity in their observations. The team assembled for this award brings to bear decades of relevant experience and will build on the lessons learned from Advanced LIGO, leveraging legacy and novel concepts and technologies to produce a robust conceptual optical design. In the process of producing this optical design, the award will also serve to develop the workforce that will be essential for completing the further stages of design, installation and commissioning of the Cosmic Explorer detectors. By putting Cosmic Explorer more firmly on the path to actualization, this award will ensure that gravitational wave science continues inspiring young scientists across the country to fulfill their potential as the world-leading researchers of the future.At the heart of the Cosmic Explorer concept are 40-km and 20-km laser interferometers operating with unprecedented strain sensitivity, an order of magnitude greater than that of Advanced LIGO. The improved sensitivity is primarily afforded by the increase in scale, as opposed to the implementation of as-yet unverified technological advancements, thereby reducing technical risk. Nonetheless, the increase in scale itself presents unique challenges for the optical design of the Cosmic Explorer interferometers, such as decreased frequency spacing of parasitic optical modes, control band-width limitations due to the cavity delay, and tighter noise requirements for auxiliary degrees of freedom at low frequencies. Moreover, with the design of an entirely new facility comes the opportunity to develop the optical layout and the infrastructure in parallel, minimizing facility constraints impact on instrument performance, and therefore the achievable science. The work supported by this award will produce a parametric conceptual optical design for the Cosmic Explorer interferometers, informing all other detector subsystem requirements, ahead of a conceptual design review anticipated to take place roughly five years from the award start date. The optical design has been divided into four main work-packages, each led by one of the four collaborating institutions: Core Interferometer, Interferometer Sensing and Control, Laser Stabilization and Lock Acquisition, and Readout and Quantum Enhancement. The tasks contained within these work packages will be addressed using a range of analytical and numerical simulation techniques and will be coordinated with the broader Cosmic Explorer conceptual design through the Cosmic Explorer Systems Team.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.
几十年来,美国在全球观测引力波的努力中一直发挥着主导作用,导致2017年获得诺贝尔物理学奖,原因是先进的LIGO探测器首次探测到来自二元黑洞合并的波,自那以来,还有更多的天体物理发现。宇宙探索者是美国在未来几十年保持这一领导地位的手段。下一代引力波天文台的宇宙探索者概念试图回答关于我们宇宙的基本问题,例如:黑洞是如何在整个宇宙时间内形成的?极端物质的物理学是什么?强引力的真正本质是什么?该项目支持激光干涉仪的概念设计,这将使宇宙探索者引力波探测器能够在其观测中实现宇宙范围和精致保真度。参加这一奖项的团队积累了数十年的相关经验,并将在Advanced LIGO经验的基础上,利用传统和新颖的概念和技术来产生强大的概念性光学设计。在制作这一光学设计的过程中,该奖项还将有助于培养完成宇宙探测器设计、安装和调试的进一步阶段所必需的劳动力。通过使宇宙探测器更坚定地走在实现的道路上,该奖项将确保引力波科学继续激励全国各地的年轻科学家发挥他们作为未来世界领先研究人员的潜力。宇宙探测器概念的核心是40公里和20公里激光干涉仪,以前所未有的应变灵敏度运行,比高级LIGO的高一个数量级。敏感性的提高主要是由于规模的扩大,而不是实施尚未核实的技术进步,从而降低了技术风险。然而,规模的增加本身对宇宙探测器干涉仪的光学设计提出了独特的挑战,例如,寄生光学模式的频率间隔减小,由于腔延迟而造成的控制带宽限制,以及对低频辅助自由度的更严格的噪声要求。此外,随着全新设施的设计,有机会并行开发光学布局和基础设施,最大限度地减少设施限制对仪器性能的影响,从而减少可实现的科学。这项由该奖项支持的工作将为宇宙探索者干涉仪提供参数概念光学设计,告知所有其他探测器子系统的要求,预计将在获奖开始日期起大约五年内进行概念设计审查。光学设计分为四个主要工作包,每个工作包由四个合作机构中的一个领导:核心干涉仪、干涉仪传感和控制、激光稳定和锁定获取以及读出和量子增强。这些工作包中包含的任务将使用一系列分析和数值模拟技术进行处理,并将通过宇宙探测器系统团队与更广泛的宇宙探测器概念设计进行协调。该奖项反映了NSF的法定使命,并通过使用基金会的智力优势和更广泛的影响审查标准进行评估,被认为值得支持。
项目成果
期刊论文数量(0)
专著数量(0)
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Lisa Barsotti其他文献
The dawn of gravitational-wave astrophysics
引力波天体物理学的曙光
- DOI:
10.1038/s41550-018-0536-7 - 发表时间:
2018-08-01 - 期刊:
- 影响因子:14.300
- 作者:
Lisa Barsotti - 通讯作者:
Lisa Barsotti
Lisa Barsotti的其他文献
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{{ truncateString('Lisa Barsotti', 18)}}的其他基金
Opening the Gravitational-Wave Band Below 30 Hz for LIGO and Cosmic Explorer
为 LIGO 和 Cosmic Explorer 打开低于 30 Hz 的引力波频段
- 批准号:
2207942 - 财政年份:2022
- 资助金额:
$ 17.23万 - 项目类别:
Standard Grant
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