https://www.app.uni-freiburg.de Astroparticle Physics Freiburg dark matter XENON DARWIN low-background CAST COMPASS Schumann GeMSE WIMP Schumann https://www.app.uni-freiburg.de/high-impact-articles The impact of research articles becomes only measurable after some time. Here are two examples. 2026-02-20T13:31:24Z News Item https://www.app.uni-freiburg.de/see-the-future-ship-experiment An animated movie nicely illustrates the future SHiP experiment installed at the newly constructed Beam Dump Facility (BDF) at CERN. 2026-02-16T14:10:43Z News Item https://www.app.uni-freiburg.de/operation-of-a-flat-tpc-in-pancake The PANCAKE facility in Freiburg is a unique platform to test very large detector components in cryogenic liquid xenon. We have now successfully operated for the first time a shallow TPC with 1.3m-diameter and 127 kg active target in PANCAKE, at the earth surface without any shielding. Operation of a flat TPC in PANCAKE 2026-01-23T12:59:31Z News Item https://www.app.uni-freiburg.de/new-research-training-group-newsm The German funding agency DFG fundes a new research training group (RTG) on particle physics in Freiburg 2025-12-19T16:22:29Z News Item https://www.app.uni-freiburg.de/xenonnt-reduces-radon-background-to-below-the-neutrino-level In the search for dark matter, the XENONnT experiment at LNGS stands out as one of the world’s most sensitive detectors in the field with an extremely low background level. XENONnT has achieved a major technological breakthrough: a significant reduction of radioactive radon. 2025-10-01T15:40:37Z News Item https://www.app.uni-freiburg.de/delight-collaboration-meeting-in-freiburg 2025-08-14T11:47:22Z News Item https://www.app.uni-freiburg.de/xenonnt-paper-in-physical-review-letters-collection-of-the-year-2024 The article 'First Indication of Solar B-8 Neutrinos via Coherent Elastic Neutrino-Nucleus Scattering with XENONnT' by the XENON Collaboration has been selected as one of the highlights published by the journal Physical Review Letters (PRL) in 2024. 2025-02-07T08:16:46Z News Item https://www.app.uni-freiburg.de/rare-meteorite-found-after-fireball-observation-in-oman Small rocks constantly penetrate the Earth's atmosphere and create shooting stars. Only rarely a meteorite found can be attributed to a fall event. This was achieved with the cameras of the Oman Meteorite Monitoring Project. On December 23, 2023, a fireball was recorded and the meteorite's trajectory was reconstructed. This enabled it to be recovered in the desert of Oman. The meteorite, named "Raja", is a rare enstatite chondrite and was recently added to the international meteorite database. 2025-01-24T08:57:52Z News Item https://www.app.uni-freiburg.de/seltener-meteorit-nach-feuerball-beobachtung-im-oman-gefunden Kleine Steinbrocken dringen dauernd in die Erdatmosphäre ein und erzeugen Sternschnuppen. Nur selten lässt sich ein gefundener Meteorit einem Fallereignis zuordnen. Dies ist mit den Kameras des Oman Meteorite Monitoring Project gelungen. Am 23. Dezember 2023 wurde ein Feuerball aufgezeichnet und damit die Flugbahn des Meteoriten rekonstruiert. Damit konnte er in der Wüste des Oman geborgen werden. Der Meteorit mit dem Namen „Raja“ ist ein seltener Enstatit-Chondrit und wurde kürzlich in die internationale Meteoritendatenbank aufgenommen. 2025-01-24T08:52:35Z News Item https://www.app.uni-freiburg.de/marc-schumann-elected-as-xlzd-spokesperson The XENON, LZ and DARWIN collaborations have recently joined forces in the newly established XLZD collaboration. Marc Schumann from Freiburg was elected, together with Dan Akerib from SLAC, as the first spokesperson of the collaboration. 2025-01-24T07:51:50Z News Item https://www.app.uni-freiburg.de/first-measurement-of-a-nuclear-recoil-signal-from-solar-neutrinos-with-xenonnt At the IDM conference in L'Aquila (Italy), the XENON collaboration announced today that it has measured neutrinos from the sun for the first time using nuclear recoil signals. The detected neutrinos are produced in the interior of the sun during nuclear decays of the isotope boron-8. When they collide with the atomic nuclei of the XENONnT detector, low-energy nuclear recoils are produced. 2024-08-07T14:02:12Z News Item https://www.app.uni-freiburg.de/xenonnt-misst-erstmals-kernruckstoss-signale-von-sonnen-neutrinos Auf der IDM-Konferenz in L'Aquila (Italien) hat die XENON-Kollaboration heute bekanntgegeben, erstmals Neutrinos aus der Sonne mittels Kernrückstoß-Signalen gemessen zu haben. Die nachgewiesenen Neutrinos werden im Sonneninneren bei Kernzerfällen des Isotops Bor-8 erzeugt. Wenn sie mit den Atomkernen des XENONnT Detektors zusammenstoßen, entstehen niederenergetische Kernrückstöße. 2024-08-07T14:02:44Z News Item https://www.app.uni-freiburg.de/the-first-single-phase-tpc The Freiburg Astroparticle Physics group demonstrates that a liquid-only single-phase TPC filled with cryogenic liquid xenon can be operated successfully. 2024-05-21T09:20:28Z News Item https://www.app.uni-freiburg.de/xenonnt-freiburg-parts-on-cover-page-of-physik-journal XENONnT components produced in Freiburg prominently featured. 2024-03-07T13:08:46Z News Item https://www.app.uni-freiburg.de/xenonnt-instrument-paper A comprehensive article on the XENONnT dark matter experiment and all its subsystems was published. 2024-08-08T08:15:29Z News Item https://www.app.uni-freiburg.de/interview-on-dark-matter-searches "We want to decipher the genetic code of our universe" 2024-02-06T12:40:16Z News Item https://www.app.uni-freiburg.de/the-pancake-platform The astroparticle physics group published an article describing the design and performance of PANCAKE, the world's largest liquid xenon detector test platform. 2024-02-20T09:32:13Z News Item https://www.app.uni-freiburg.de/the-xenonnt-field-cage The central component of a dual-phase liquid xenon time projection chamber (TPC) is its field cage. This is the structure that establishes the electric field in which electrons drift across the TPC and ensures that this field is homogenious. A new articles, authored by members of Freiburg's astroparticle physics group, describes the field cage of the XENONnT dark matter detector. The field cage was designed by and many of its components were produced in Freiburg. 2023-11-02T11:36:34Z News Item https://www.app.uni-freiburg.de/gamma-spectrometry-for-archaeology Using our low-background gamma spectrometer GeMSE for an interdisciplinary project with geologists and archeologists, we could proof that the iron used to produce an arrowhead in the Bronze Age is of extraterrestrial origin: most likely it comes from an iron meteorite that impacted on Estonia. 2023-08-16T12:33:51Z News Item https://www.app.uni-freiburg.de/first-wimp-search-results-from-the-xenonnt-experiment One of the world's most sensitive detector to search for the mysterious dark matter particle releases its first results in the search for WIMPs, one of the most popular dark matter particle candidates. 2023-03-28T07:56:28Z News Item https://www.app.uni-freiburg.de/postdoc-position-on-xenon-and-darwin-open We are looking for a PostDoc in experimental astroparticle physics to work on XENONnT and on R&D towards DARWIN/XLZD. 2022-11-30T15:11:13Z News Item https://www.app.uni-freiburg.de/two-results-from-the-freiburg-astroparticle-lab 2023-01-10T08:26:14Z News Item https://www.app.uni-freiburg.de/first-results-from-a-search-for-new-physics-in-electronic-recoils-from-xenonnt XENONnT, the latest detector of the XENON Dark Matter program, shows an unprecedentedly low background which facilitates searches for new, very rare phenomena with high sensitivity. First results clarify an exciting excess observed in the predecessor XENON1T and set strong limits on new physics scenarios. 2022-08-05T13:54:19Z News Item https://www.app.uni-freiburg.de/die-suche-nach-neuer-physik-mit-elektron-ruckstosssignalen-erste-ergebnisse-des-xenonnt-experiments XENONnT, der neueste Detektor der internationalen XENON-Kollaboration, zeigt ein bisher unerreicht niedriges Niveau an Untergrundsignalen, das eine empfindliche Suche nach neuen, sehr seltenen Phänomenen ermöglicht. Erste Ergebnisse klären nun ein aufregendes Signal, das im Vorgängerexperiment XENON1T beobachtet wurde, und setzen starke Grenzen für verschiedene Szenarien neuer Physik. 2022-07-22T12:19:12Z News Item https://www.app.uni-freiburg.de/about-gemses-new-background-and-a-banana A new paper describes the current background level of the group's GeMSE low-background spectrometer, the (almost) fully remote operation of the facility and a novel way to simulate the detection efficiency of complex-shaped (e.g., banana-like) objects. 2022-04-12T10:16:30Z News Item https://www.app.uni-freiburg.de/new-analysis-options-in-a-single-phase-tpc A new paper by the ERC-funded ULTIMATE team studies new options for data analysis opening up in single-phase liquid xenon TPCs. 2021-12-23T11:33:29Z News Item https://www.app.uni-freiburg.de/gemse-measurements-in-xenonnt-radiopurity-paper 2021-12-13T10:05:30Z News Item https://www.app.uni-freiburg.de/ship-detector-paper-published 2021-12-03T09:57:26Z News Item https://www.app.uni-freiburg.de/review-talks-at-icrc-and-taup 2021-09-08T13:20:03Z News Item https://www.app.uni-freiburg.de/freiburg-joins-ship The Astroparticle Physics Group at the University of Freiburg joins the SHiP Experiment at CERN. 2021-04-19T08:54:47Z News Item