Mainz 2012 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 53: Poster – Instrumentation
HK 53.26: Poster
Donnerstag, 22. März 2012, 14:00–16:00, P Foyer
Coil Tests for the Neutron Lifetime Experiment PENeLOPE — •Andreas Senft — Technische Universität München, Physik Department
The lifetime τn of the free neutron provides important information for cosmological models as well as for tests of the Standard Model of particle physics. The current PDG average value includes measurements which scatter by about 6 σ . Thus, at the Physik Department of Technische Universität München, PENeLOPE, a novel experiment in order to determine τn and to clarify the situation, is under way. Ultra-cold neutrons (UCNs) will be trapped in a magnetic gradient field, which is produced by superconducting coils in a multipole configuration. The poster will explain the particular requirements for the coils due to the special coil geometry and polarity employed as well as the recently installed test facility, which is used for prototype tests and will afterwards be used to test and train the coils installed in PENeLOPE. In addition, a quench monitoring and protection system to analyze the voltage signal and to protect the experimental setup in case of a quench will be presented. Finally, the tests with a prototype solenoid, which showed promising results, as the required values were reached and even exceeded, will be presented.
The project is supported by the Excellence Cluster ”Origin and Structure of the Universe“, Deutsche Forschungsgemeinschaft and Maier-Leibnitz-Laboratorium Garching.