Einstein Telescope: Collaboration is now at work

The Einstein Telescope Cooperation has just taken an important step, for the first time, at a meeting of about 80 delegates to the Council of Cooperation in Budapest on June 7 and 8.Board of Cooperation) To approve operating rules, its scientific purpose and the developments necessary to achieve them. This symbolic move, comparable to the birth of a small educated society gathered around the realization of this great instrument of the future, is the last milestone that has yet to be crossed so that this project is born in the minds of scientists from the 2000s to the present.

Einstein Telescope, European “third generation” gravitational wave detectors (daughters and advanced virgins in Europe and after LIGO in the United States), It was really imagined about fifteen years ago, with ten times the sensitivity, of the tiny spasms of space-time caused by extreme cosmic events. It is based on the experience gained with current second generation detectors, of which Virgo is a part. Like its predecessors, the ET will use giant laser interferometers to detect gravitational waves. It will be 3, 10 km long and organized in a triangle, which can be compared to Virgo using a single, 3 km long. Other notable differences, ET will be underground to overcome the sound of surface earthquakes. Finally, the detector consists of two separate interferometers, the first will be at room temperature and the second will be a mirror cooled to cryogenic temperature to reduce thermal vibrations. The first research conducted around this project, specifically funded for the European program FP7, ended with the publication. The conceptual design report of the Einstein Telescope In 2011. But that year, gravitational waves had not yet been discovered and so it was a theoretical concept. This accelerated the establishment of the collaboration after the detection of the first merging of black holes and neutron stars. In 2019, a letter of intent was signed by 730 scientists and a steering committee (ET Steering Committee) Is kept in place.

The full existence of cooperation

Since then, the steering committee of about twenty European scientists has updated the basics of the project (a “publication”). Design Report Update 2020 And a “ET Science Box”) The scientific community has been formed by forming working groups on detectors, science, features of candidate sites and calculations. In 2021, the ET project was included in the European Roadmap for Research Infrastructure (ESFRI). The first funds required for preliminary research for the development of ET were received in early 2022 (INFRA-DEV Horizon EU projects). At the same time, in each member country, teams dedicated to the project were formed and applications were made for the ET project. Thus eight teams were formed in France, bringing together about 110 people. All the representatives of this group met like a small parliament in Budapest in early June, giving full and full cooperation to the true meaning of cooperation.

The Einstein Telescope Collaboration was held on June 7 and 8, 2022 for the XII ET Symposium at the Hungarian Academy of Sciences in Budapest. Credit: ET Collaboration

Of the more than 1,200 members of the collaboration, more than 400 scientists attended the Budapest meeting in person or remotely. ET members discussed test progress, scientific goals and scientific and technological progress. The symposium was an opportunity to present the INFRA-DEV Horizon EU project, aimed at testing preparation phase, as well as the INFRA-TECH Horizon EU proposal, recently submitted to support AND-related R&D activities.

Start-up planned in 2035

Now that the cooperation is on track, a spokesperson will be elected in the autumn and the rhythm of the working meetings of the cooperation council will increase to several each year. Now the purpose is to study the feasibility and choose the place for implantation, so that Than the Einstein telescope Virgo could take over from Virgo in the second half of the 2030s. With the European LISA satellite, which will travel at the same time to search for super-massive black holes and American gravitational wave detectors. Cosmic ExplorerET Virgo and LIGO will continue the revolution in astronomy and basic physics that began with detection.

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