Einstein Telescope ET Raffaele Flaminio Laboratoire dAnnecy de
Einstein Telescope (ET) Raffaele Flaminio Laboratoire d’Annecy de Physique des Particules (CNRS/IN 2 P 3) GDR Ondes Gravitationnelles, 19 October 2018 1
Einstein Telescope: why? l l Present infrastructures will reach their limits in the next decade This will happen first in Europe u Limits of the Virgo infrastructure already visible in the Advanced Virgo design l Need to prepare for a new European research infrastructure devoted to GW detection: Einstein Telescope GDR Ondes Gravitationnelles, 19 October 2018 2
ET: Conceptual Design l 2011 ET conceptual design: characteristics and performances u Underground (low environmental noise) u Triangular (three ITF’s nested) u Xylophone (low/high frequency interferometers) u Cryogenic (low thermal noise) GDR Ondes Gravitationnelles, 19 October 2018 3
Questions l l Site? Three sites being considered u NL-B-D: Euregio. Meuse-Rhine u Hungary: Matra mountains u Italy: Sardinia GDR Ondes Gravitationnelles, 19 October 2018 4
Questions l Cost reduction? u Most of the cost due to infrastructure u Cheap tunneling? u Cheap vacuum tubes? l Instrument challenges u Cryogenic interferometer » Vibration free cryogenics » New mirror materials: silicon? » New laser wavelengths: 1. 5 m? u Large mirrors (200 kg) u Coatings with lower thermal noise » At room and cryogenic temperatures u Larger laser power GDR Ondes Gravitationnelles, 19 October 2018 5
Timeline l l l l 2019 Setup of the ET collaboration 2020 ESFRI roadmap (preparation starting now) 2022 Site Selection 2023 Technical Design Report 2025 Infrastructure realization start 2030 -2031 end of infrastructure construction, beginning of installation 2032+: installation / commissioning / operation GDR Ondes Gravitationnelles, 19 October 2018 6
On going now l Worldwide coordination on 3 G detectors u Launched by GWIC (Gravitational Wave International Committee) u Many discussions at DAWN meetings » https: //indico. nikhef. nl/event/1174/overview l ET collaboration u Letter of Intent » You can sign it at: http: //www. et-gw. eu/index. php/letter-of-intent u Launch of the ET collaboration » Governance of the ET collaboration being discussed l Get on the ESFRI roadmap u Main milestone for ET in the near future GDR Ondes Gravitationnelles, 19 October 2018 7
- Slides: 7