Sensor noise in LISA Pathfinder: in-flight performance of the optical test mass readout
We report on the first subpicometer interferometer flown in space. It was part of ESA’s Laser Interferometer Space Antenna (LISA) Pathfinder mission and performed the fundamental measurement of the positional and angular motion of two free-falling test masses. The interferometer worked immediately,...
| Autores: | , , , , , , , , , , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2021 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/360601 |
| Acceso en línea: | https://hdl.handle.net/2117/360601 https://dx.doi.org/10.1103/PhysRevLett.126.131103 |
| Access Level: | acceso abierto |
| Palabra clave: | Physics Gravitation Electronics General Physics Cosmology & Astrophysics Atomic Molecular & Optical Interdisciplinary Physics Cosmologia Física Gravitació Electrònica Cosmology Àrees temàtiques de la UPC::Física::Astronomia i astrofísica::Cosmologia i cosmogonia Àrees temàtiques de la UPC::Física Àrees temàtiques de la UPC::Física::Relativitat::Gravitació Àrees temàtiques de la UPC::Enginyeria electrònica::Instrumentació i mesura |
| Sumario: | We report on the first subpicometer interferometer flown in space. It was part of ESA’s Laser Interferometer Space Antenna (LISA) Pathfinder mission and performed the fundamental measurement of the positional and angular motion of two free-falling test masses. The interferometer worked immediately, stably, and reliably from switch on until the end of the mission with exceptionally low residual noise of 32.0 + 2.4 - 1.7 ¿ ¿ fm / v Hz , significantly better than required. We present an upper limit for the sensor performance at millihertz frequencies and a model for the measured sensitivity above 200 mHz. |
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