Stepped beam pipes and helical baffles for scattered light absorption in future gravitational wave detectors
The next generation interferometric gravitational wave detectors require arm lengths measured in tens of kilometers, with each cavity storing megawatts of optical power. The beams are contained in ultrahigh vacuum pipes. Scattered interferometer light in the pipes may reenter the cavities and inject...
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| Veröffentlicht in: | Review of scientific instruments 2020-05, Vol.91 (5), p.054505-054505, Article 054505 |
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| container_issue | 5 |
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| container_title | Review of scientific instruments |
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| creator | DeSalvo, Riccardo Pelosi, Giuseppe Pinto, Innocenzo M. Selleri, Stefano |
| description | The next generation interferometric gravitational wave detectors require arm lengths measured in tens of kilometers, with each cavity storing megawatts of optical power. The beams are contained in ultrahigh vacuum pipes. Scattered interferometer light in the pipes may reenter the cavities and inject extra noise. The pipes are, therefore, provided with optical baffles necessary to eliminate the scattered light. The design of the vacuum pipes and of the optical baffles is tightly intertwined. We present a thorough discussion that opens the door to the design of an optimized stepped-diameter vacuum pipe system using novel helical baffles. Our analysis suggests that a more efficient pipe design (with special reference to scattered light) may use spiral baffles and sectioned stepped tubes. |
| doi_str_mv | 10.1063/1.5144862 |
| format | Article |
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| source | AIP Journals Complete; Web of Science - Science Citation Index Expanded - 2020<img src="https://exlibris-pub.s3.amazonaws.com/fromwos-v2.jpg" />; Alma/SFX Local Collection |
| subjects | Design optimization Detectors Diameters Electromagnetic absorption Gravitation Gravitational waves Holes Instruments & Instrumentation Physical Sciences Physics Physics, Applied Pipes Pipes (defects) Science & Technology Scientific apparatus & instruments Technology Tubes Ultrahigh vacuum |
| title | Stepped beam pipes and helical baffles for scattered light absorption in future gravitational wave detectors |
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