Köln 2004 – scientific programme
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HK: Physik der Hadronen und Kerne
HK 12: Poster Session: Instrumentation and Applications
HK 12.16: Poster
Tuesday, March 9, 2004, 13:30–15:30, Foyer
Mini-D2, a source for ultracold neutrons at the neutron source FRM-II — •Daniele Tortorella, Igor Altarev, Andreas Frei, Andreas Gschrey, Erwin Gutsmiedl, F. Joachim Hartmann, Stephan Paul, Wolfgang Schott, and Oliver Zimmer — Physik-Department E18, Technische Universität München
Mini-D2 is a new facility for the production of ultracold neutrons (UCN) that will be installed at the SR4 channel of the new neutron source FRM-II at Garching. About 200 cm3 of solid deuterium at about 5 K will be used as converter. It will be placed inside a specially shaped cup at the end of a long horizontal storage tube (diameter about 6 cm, length about 8 m), very close to the cold source of the reactor. The tube will be coated from inside with a thin layer of Be, thus improving the storage capacity of the system. According to model calculations we may expect a UCN density of about 104 UCN/cm3, orders of magnitude larger than that of the best existing source at the high-flux reactor of Institut Laue Langevin, Grenoble. Test measurements at the TRIGA-Mainz reactor, in collaboration with the University of Mainz, are planned for January 2004.
Supported by the Maier-Leibnitz Laboratory (MLL) of LMU and TUM at Garching and by the Deutsche Forschungsgemeinschaft.