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ELiTES Work Packages

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Written by: Michele Punturo
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The ELiTES project is organized in four Work Packages:

  • WP1, "Cryogenics and suspensions", chaired by Ettore Majorana (Roma University/INFN), having the following objectives:
    • Measure of the performance of designed cryogenic suspension system in a practical interferometer from the point of seismic and vibration isolation
    • Design and test of auxiliary attenuation system for thermal link
  • WP2, "Mirror thermal noise and cryogenics", chaired by Ronny Nawrodt (FSU), having the following objectives:
    • Investigation of the mechanical loss in both silicon and sapphire bulk materials;
    • Performance of suitable optical coatings on sapphire substrates for the development of the mirrors for LCGT and to share the complimentary expertise contained within the LCGT and ET groups (e.g. Japanese expertise in studying low temperature properties of sapphire, European expertise in studying low temperature coatings)
    • Assessment of the properties and suitability of silicate bonding for bonding sapphire, and comparison with the properties of bonded silicon, to develop techniques for constructing sapphire suspensions for use in LCGT and as a possible alternate suspension material for use in ET
    • Characterisation of the thermal and mechanical properties of suspension elements (fibres, bond areas, etc.)
  • WP3, "Large-scale cryogenic infrastructure for LCGT and ET", chaired by Kentaro Somiya (ICRR), having the following objectives:
    • Specifying noise sources arising from cooling system quantatively and qualitatively
    • Optimum design of raditation shield
    • Prevention of possbile contamination of clean surface of mirrors
  • WP4, "Management", chaired by Michele Punturo (EGO and INFN, Project coordinator), addressed to the overall management of the project

News

The upcoming ET Symposium will take place in Maastricht from May 6th at noon until May 10th early afternoon. This symposium gives the chance to unite with colleagues deeply engaged in the Einstein Telescope project and those who share a profound interest in ET. Together, we'll delve into recent advancements and exchange insights while forging lasting connections.

The web page of the event is available here: https://indico.ego-gw.it/event/710/ 

Krzysztof (Chris) Belczynski  pioneered the study of massive black hole formation from the collapse of metal-poor progenitors, several years before the advanced detectors' era. He demonstrated that binary population synthesis is the necessary starting point to understand the (astro)physics of binary compact objects, unraveling the importance of stellar winds, mass transfer, and common envelope. Thanks to his work, we  understand why LIGO and Virgo have observed many more binary black holes than neutron star mergers. For many years to come, his models will be a cornerstone for the science case of the Einstein telescope, as well as for the other implications of massive binary star evolution across cosmic time. His volcanic, unconventional, and provocative personality will be sorely missed.

 

 

The 2nd Einstein Telescope Annual Meeting (Nov, 14, 2023 - Nov, 16, 2023)  will be the opportunity to discuss key points of the ET collaboration and of the ET design.

The meeting is hosted by the “Gravitational waves” group of the Astroparticles, Astrophysics and Cosmology (A2C) department of the Irène Joliot-Curie Laboratoire des deux infinis (IJCLab). It will take place in the IJCLab Lehmann auditorium (building 200) in the campus of the Paris-Saclay University. Open to all ET collaboration members, it will start on Tuesday morning November 14th and end on Thursday November 16th at lunch time. In-person and remote registrations are possible.

Indico page: https://indico.ijclab.in2p3.fr/event/9686 

The XIII symposium of the Einstein Telescope (ET) will be held in Cagliari, at the THotel from May 8th to May 12th 2023. 

The Symposium is organized in parallel sessions, hosting workshops managed by the ET specific boards (EIB, ISB, OSB and SPB), and a plenary sessions to have a global view of all the activities on going.  

Along the week several lectures on the physics of ET will be organized with the support of the OSB for PhD students and young researchers.

All the details are available in the Indico page of the event:
https://indico.ego-gw.it/event/562/ 

The second Site Preparation Board (SPB) workshop will take place from23-26 January 2023, Maastricht (NL). This will be the occasion to discuss and get updates on the various activities taking place at the sites aspiring to possibly host the future Einstein Telescope (Sardegna in Italy, EMR partially in Belgium, Germany & The Netherlands and possibly Lausitz in Germany). In particular (hydro)geology aspects, noise environment, legal/permitting affairs, bidbook organization, schedules, excavation costs, local funding and future plans, etc. will be discussed. Apart from plenary presentations, lots of time will be reserved for discussions. 

The venue of the workshop is Thiessen Wineries, Maastricht, Grote Gracht 18, 6211SW, Maastricht, The Netherlands. See: https://thiessen.nl/. A maximum of 50 participants can be hosted in person. A video (Zoom) link will be provided to allow remote attendance.

Indico page here: https://indico.ego-gw.it/event/525/