Dear all, This week we have the pleasure of hosting Dr. Ernst-Jan Buis from Nikhef. Dr. Buis will discuss his research work and progress on fiber-optic hydrophones for acoustic detection of UHE neutrinos. The seminar will take place in the J. Sacton Room this Friday, April 17th, at 2:00 PM. Please find further details below: ********************************************* Title: Fiber optic hydrophones for acoustic neutrino detection Abstract: The scientific potential for detecting cosmic neutrinos with energies at or above the GZK cut-off—the energy limit for cosmic rays due to interactions with the cosmic microwave background—has been extensively discussed in the literature. The recent observation of a very high-energy event by the KM3NeT telescope has further fueled this discussion, as it may represent the first detection of a GZK neutrino. However, despite this remarkable result, the extremely low expected flux of ultra-high-energy neutrinos (Eν > 1018 eV) clearly indicates that their detection will require a telescope with an effective volume exceeding 100 km3. Acoustic detection offers a promising approach for observing these ultra-high energy cosmic neutrinos. The sound waves generated by their energy deposition in the deep sea can propagate over many kilometers with little attenuation, making it feasible to instrument a vast volume of water for neutrino detection. Achieving this requires the development of acoustic detection technologies capable of supporting a large-scale, deep-sea sensor network. Fiber-optic hydrophone technology stands out as a promising candidate for such a network, combining the necessary sensitivity to detect the faint acoustic signals from neutrino interactions with the potential for cost-effective large-scale deployment. Nikhef is actively developing this fiber-optic hydrophone technology to meet the sensitivity and operational requirements of deep-sea environments. In this presentation, I will report on the progress of the hydrophone development and outline the plans toward a future acoustic neutrino telescope — opening a window to explore the universe beyond the GZK horizon. ************************************** <https://indico.iihe.ac.be/event/2461/> [indico_square.png] IIHE Invited seminar: Fiber optic hydrophones for acoustic neutrino detection<https://indico.iihe.ac.be/event/2461/> indico.iihe.ac.be<https://indico.iihe.ac.be/event/2461/> As always, I look forward to a well-attended seminar and to seeing many of you on Friday! Simona. Dr. Simona Toscano (she / her / hers) Université Libre de Bruxelles Inter-university Institute for High Energies (IIHE) Service de physique de particules élémentaires, ULB - CP 230 Boulevard du Triomphe - 1050 Bruxelles (Belgium) Office : G.0.16 tel: +32.(0)2.629.3216 Email: stoscano@ulb.be<mailto:stoscano@vub.ac.be> or toscano@icecube.wisc.edu<mailto:toscano@icecube.wisc.edu> [PastedGraphic-10.png]
