Performance of the (n,{gamma})-Based Positron Beam Facility NEPOMUC

Journal Article · Wed Jan 28 00:00:00 EST 2009 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3087083· OSTI ID:21255478

Schreckenbach, K; Hugenschmidt, C; Piochacz, C; Stadlbauer, M ^[1]; Loewe, B; Maier, J; Pikart, P ^[2]

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1. FRM II, TU Muenchen, Lichtenbergstr. 1, 85748 Garching (Germany)
2. Physik Department E21, TU Muenchen, James Franck Str., 85748 Garching (Germany)

The in-pile positron source of NEPOMUC at the neutron source Heinz Maier-Leibnitz (FRM II) provides at the experimental site an intense beam of monoenergetic positrons with selectable energy between 15 eV and 3 keV. The principle of the source is based on neutron capture gamma rays produced by cadmium in a beam tube tip close to the reactor core. The gamma ray absorption in platinum produces positrons which are moderated and formed to the beam. An unprecedented beam intensity of 9.10{sup 8} e{sup +}/s is achieved (1 keV). The performance and applications of the facility are presented.

• OSTI ID: 21255478
• Journal Information: AIP Conference Proceedings, Vol. 1090, Issue 1; Conference: 13. international symposium on capture gamma-ray spectroscopy and related topics, Cologne (Germany), 25-29 Aug 2008; Other Information: DOI: 10.1063/1.3087083; (c) 2009 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
ABSORPTION
CADMIUM
CAPTURE
FRM-II REACTOR
GAMMA RADIATION
MODERATORS
NEUTRON REACTIONS
NEUTRON SOURCES
NUCLEOSYNTHESIS
PERFORMANCE
PLATINUM
POSITRON BEAMS
POSITRON SOURCES
POSITRONS
REACTOR CORES