Dr. Magnus Schlösser – KIT – IAP – TLK
29 de enero de 2024
Hunt for the neutrino mass
The Karlsruhe Tritium Neutrino (KATRIN) experiment determines the neutrino mass by electron spectroscopy of the tritium beta-decay spectrum. After a total measurement time of 1000 days in 2025, a final sensitivity better than 0.3 eV/c² (90% C.L.) is anticipated. However, the sensitivities must be pushed further. These R&D efforts are done under the umbrella of the KATRIN++ project.
For the new differential detector with sub-eV resolution, we are currently testing quantum sensors, more precisely, μm-sized cryogenic (10 mK) calorimeters. Furthermore, time-of-flight methods are studied for which single-electron tagging is required. Additionally, a first-of-its-kind setup for creating tritium atoms is under construction. We plan to make it part of another demonstrator – after solving key challenges for future atomic sources (mK-cooling, storing of atoms) in cooperation with the global community (e.g. Project 8). KATRIN++ is inviting research groups to join this endeavour.
