AVS 69 Conference Portland, OR, Nov 5-10, 2023
- Document #:
- LIGO-G2302149-v1
- Document type:
- G - Presentations (eg Graphics)
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- Abstract:
- Presentation given by Melina Fuentes-Garcia at the AVS 69 conference in Portland, Oregon on November 7th, 2023.
Title: "Exploring Large Vacuum Systems at LIGO: A Brief Introduction to the Vacuum Challenges of the Cosmic Explorer"
Abstract:
The Laser Interferometer Gravitational-Wave Observatory (LIGO) consists of a set of multi-kilometer-scale gravitational wave detectors able to detect major events in our universe, such as black hole pair collisions. Because of stringent noise requirements, LIGO operates in an ultra-high-vacuum environment to minimize disturbance to the laser, optics, and other equipment inside the chambers. Factors such as material outgassing, contamination control, seal integrity, and pumping must all be optimized for minimal disturbance to the detectors. Cosmic Explorer (CE) aims to increase LIGO’s sensitivity tenfold by scaling LIGO’s 4 km long vacuum arms to 40 km, which amounts to a 90-million-liter vacuum system nominally sustained at 1E-9 Torr. This next-generation detector will significantly enhance our ability to detect gravitational waves, but will require greater challenges to the design and construction of its large vacuum system. Here we introduce some of the major challenges currently being studied, with an emphasis on the selection of alternate beam tube materials and elimination of high temperature bakeouts to reduce outgassing. Conference Name and Website:
American Vacuum Society's 69th International Symposium & Exhibition
https://avs69.avs.org/
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