Proposal for MRI/RUI funds to Acquire a Vacuum Annealing Oven for Advanced LIGO Test Masses and Mini-Cluster to Analyze Bilinear Noise in Initial LIGO

关于 MRI/RUI 资金购买用于先进 LIGO 测试质量的真空退火炉和用于分析初始 LIGO 中双线性噪声的小型集群的提案

基本信息

批准号：
0321144
负责人：
Steven Penn
金额：
$ 8万
依托单位：
Hobart and William Smith Colleges
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2003
资助国家：
美国
起止时间：
2003-08-01 至 2005-07-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=0321144&HistoricalAwards=false
关键词：
Proposal MRI RUI funds Acquire

项目摘要

This award supports the acquisition of a moderately large vacuum annealing oven to process pieces of fused silica and other materials considered for use by the next generation of the Laser Interferometric Gravitational wave Observatory (Advanced LIGO). This oven will allow research into the thermal and mechanical noise of optical materials and coatings of a size appropriate for Advanced LIGO. The test masses for Advanced LIGO are to be made from either sapphire or fused silica. Sapphire is mechanically superior under most criteria but suffers from increased loss at low frequencies and, at present, unacceptably high optical absorption. Fused silica has low absorption and has a mechanical loss that, for suitably prepared samples, is below the Advanced LIGO design limits. However, this low mechanical loss has never been seen in large samples. The PI in collaboration with other LIGO scientists will study loss mechanisms in fused silica in an effort to make large, low loss optics.LIGO and Advanced LIGO are designed to search for gravitational waves whose direct detection would open a new window on some of the universe's most violent events such as black hole collisions and supernova explosions. The annealing oven will be used in research on the critical path to the development of Advanced LIGO. Undergraduates will participate in the set up and use of the annealing oven.

该奖项支持购买一台中等大型真空退火炉，用于处理熔融石英和其他考虑供下一代激光干涉引力波天文台（高级 LIGO）使用的材料。该烤箱可用于研究适合高级 LIGO 尺寸的光学材料和涂层的热噪声和机械噪声。 Advanced LIGO 的测试质量由蓝宝石或熔融石英制成。蓝宝石在大多数标准下具有优异的机械性能，但在低频下损耗增加，并且目前光学吸收率高得令人无法接受。熔融石英具有低吸收率，并且对于适当制备的样品而言，其机械损失低于高级 LIGO 设计极限。然而，在大样本中从未见过如此低的机械损失。 PI 与其他 LIGO 科学家合作，将研究熔融石英的损耗机制，以制造大型、低损耗的光学器件。LIGO 和 Advanced LIGO 旨在寻找引力波，直接探测引力波将为了解宇宙的某些现象打开一扇新窗口。最剧烈的事件，如黑洞碰撞和超新星爆炸。该退火炉将用于研究先进LIGO发展的关键路径。本科生将参与退火炉的设置和使用。