Tootfinder

Measurements of enriched 155 Gd and 157Gd converters with the NMX detector on the nTOF EAR2 beam line at CERN
D. Pfeiffer, F. M. Brunbauer, I. R. Fehse, A. D. Finke, K. Fissum, K. J. Floethner, D. Janssens, M. Lisowska, H. Muller, E. Oksanen, E. Oliveri, L. Ropelewski, A. Rusu, J. Samarati, L. Scharenberg, M. van Stenis, R. Veenhof, N. Zavaritskaya
https://

Measurements of enriched 155 Gd and 157Gd converters with the NMX detector on the nTOF EAR2 beam line at CERN
The detectors for the NMX instrument at the European Spallation Source (ESS) in Lund use natural Gd as the neutron converter. In 2024, beam time was obtained at the neutron time-of flight experiment (nTOF) at CERN to study the feasibility of an upgrade to enriched Gd. A 10 x 10 cm^2 prototype of the NMX detector was equipped with two enriched Gd samples (157Gd and 155Gd) that were attached with copper tape to the natural Gd cathode of the detector. Three sets of measurements were taken, with th…

Constraining the contribution of Seyfert galaxies to the diffuse neutrino flux in light of point source observations
Lena Saurenhaus, Francesca Capel, Foteini Oikonomou, Johannes Buchner
https://arxiv.org/abs/2507.06110

Constraining the contribution of Seyfert galaxies to the diffuse neutrino flux in light of point source observations
Recently, the IceCube Collaboration reported evidence for TeV neutrino emission from several nearby Seyfert galaxies, with the highest significance found for NGC 1068. Assuming stochastic proton acceleration in magnetized turbulence inside the corona, we model the neutrino emission of Seyfert galaxies as a function of their X-ray luminosity. Applying our model to NGC 1068, we obtain a good fit to the public IceCube data and constrain the coronal radius to $\lesssim 5 R_S$ by comparing our MeV $…