Journal Article

IMPULSE-2026-00076

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Feasibility of a ’Brightness Booster’ for the Intense Slow Positron Source NEPOMUC

Mitteneder, J.MLZ* ; Kögel, G. ; Helm, R.MLZ* ; Dickmann, M.MLZ* ; Dollinger, G.

2025
Trans Tech Publications Ltd. Baech

Please use a persistent id in citations: doi:10.4028/p-LGc6vF

Abstract: Brightness enhancement by re-moderation of highly intense slow positron sources at nuclear reactors or large electron accelerators is an inevitable requirement for most positron experiments. We demonstrate the feasibility of a new layout for re-moderation combining for the first time the high reliability of magnetic beam guiding, the high efficiency of reflection re-moderation, correction of spherical aberrations in the primary focussing lens and loss-free extraction of the re-moderated beam by an E x B-filter. In the case of the intense positron source NEPOMUC at the research reactor FRM II in Munich, up to 10-fold intensity and 100-fold brightness are predicted for the re-moderated positron beam, compared to the current situation.

Keyword(s): Instrument and Method Development (1st) ; Instrument and Method Development (2nd)

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Contributing Institute(s):

1. NEPOMUC (NEPOMUC)

Experiment(s):

1. NEPOMUC: Neutron induced positron source munich (SR11)

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Database coverage:
National-Konsortium ; SCOPUS

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