News

Town Meeting 2025

On the 23rd and 24th of September, more than 100 researchers met in Zaragoza to discuss the new developments in Astroparticle Physics and in the neighboring fields that will shape the strategic recommendations of the next strategic roadmap. The round table sessions at the APPEC Town Meeting provided additional input from the community. Currently an […]

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Creation of the KM3NeT AISBL entity

KM3NeT has taken a major step forward with the creation of the KM3NeT Association Internationale Sans But Lucratif (AISBL), a new international non‑profit entity under Belgian law. This structure, identified as the best legal framework through the EU‑supported KM3NeT‑Infradev2 project, will streamline and formalise all activities related to the construction, operation, scientific use, and future

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Excavation of the Colossal Cavern for Hyper-Kamiokande Completed

On July 31, 2025, the University of Tokyo completed excavation of the colossal cavern that will house the main detector volume of Hyper-Kamiokande, a next-generation, ultra-large water Cherenkov detector currently under construction in Hida City, Gifu, Japan. Hyper-Kamiokande (Hyper-K) is a next-generation particle detector consisting of a gigantic water tank with a fiducial volume 8.4

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ANTARES : two decades of neutrino searches in the Mediterranean Sea

ANTARES, the first neutrino telescope in seawater operated in the Mediterranean for over 15 years before being decommissioned and dismantled in 2022. The ANTARES Legacy paper summarizes two decades of neutrino searches in the Mediterranean Sea, detailing the challenges, achievements, and scientific results. The paper presents the final analysis of cosmic diffuse neutrino flux based

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A sprawling, textured field of galaxies scattered across the deep black of space. It is filled with the delicate smudges and glowing cores of galaxies of many shapes, sizes and colors, as well as the bright multi-colored points of stars. To the lower left is a region filled with the hundreds of golden glittering gems of a distant galaxy cluster. In the foreground, below and right of center, two blue spiral galaxies look like eyes beneath the entangled mass of a triple galaxy merger in the upper right. A few bright blue points of foreground stars pierce the glittering tapestry. All throughout the image, thousands of galaxies gather in clusters or are spread throughout, like glittering gems strewn on a table. Some are sharp-edged and spiral, like coiled ribbons; others round and diffuse, like polished pebbles. Still others are just smudges of various colors against the black of space. The background is peppered with pinpoint stars in reds, yellows, and blues, crisp against the velvet black.

Ever-changing Universe revealed in first imagery from NSF–DOE Vera C. Rubin Observatory

The NSF–DOE Vera C. Rubin Observatory, a major new scientific facility jointly funded by the U.S. National Science Foundation and the U.S. Department of Energy’s Office of Science, released its first imagery at an event in Washington, D.C. The imagery shows cosmic phenomena captured at an unprecedented scale. In just over 10 hours of test

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Joint ECFA-NuPECC-ECFA Symposium 2025

The 3rd Joint ECFA-NuPECC-APPEC Symposium (JENAS) was held on April 8–11, 2025 at the Harwell Campus, Didcot, UK: https://indico.global/event/5574/timetable/#20250408 This triennial meeting unites the particle, nuclear, and astroparticle physics communities, funding agencies, and major collaborations to explore synergies, share recent achievements, and address common challenges. Topics include physics highlights, future projects, detector and computing advances, and

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New KATRIN results

The KATRIN collaboration has succeeded in determining a new upper limit of 0.45 eV/c² for the neutrino mass. “The new result is a milestone on the way to the measurement goal of KATRIN,” says Kathrin Valerius, co-spokesperson of the KATRIN collaboration and professor at the Karlsruhe Institute of Technology. Neutrinos play a key role both

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News from ISAPP

Since 2002, leading European institutions have advanced early-stage training in astroparticle physics through the International Schools on Astroparticle Physics (ISAPP). This initiative fosters student mobility, knowledge exchange, and research collaboration, offering PhD students and early career researchers the chance to engage with experts. ISAPP organizes annual intensive schools in various locations, offering an immersive experience

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APPEC Town Meeting 2025

Zaragoza, Spain 23–24 September 2025 We are thrilled to invite you to join the APPEC Town Meeting 2025 for the preparation of the European Astroparticle Physics Strategy 2027-2036:  https://indico.cern.ch/event/1516919/ The APPEC Town Meeting will be held on-site in Zaragoza, Spain on 23-24 September 2025. Town Meeting 2025: Preparation of the 2027-2036 Strategic Roadmap As input

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