Journal Article

FZJ-2014-04039

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Prompt γ radiation measured with a Nal scintillation detector: a beam monitor for neutron scattering instruments which needs no space in the beam

Holderer, O. (Corresponding Author)FZJ* ; Zamponi, M.FZJ* ; Monkenbusch, M.FZJ* ; Engels, R.FZJ*

2014
IOP Publ. Bristol

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Please use a persistent id in citations: http://hdl.handle.net/2128/7173  doi:10.1088/1742-6596/528/1/012038

Abstract: We investigate the possibility of using the prompt γ rays emitted by aluminum windows in order to monitor the neutron flux of the beam. A Nal scintillation detector is used to detect the prompt γ rays. No additional material apart from the unavoidable Al windows along the flight path is placed in the beam. The performance of the monitor is compared to that of a standard BF3-monitor placed in the beam. Influences of a magnetic field on the photomultiplier of the Nal monitor is discussed, as well as the influence of activation gammas. At an instrument using a beam chopper the time behaviour is discussed.

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

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Contributing Institute(s):

1. Neutronenstreuung (Neutronenstreuung ; JCNS-1)
2. JCNS-FRM-II (JCNS (München) ; Jülich Centre for Neutron Science JCNS (München) ; JCNS-FRM-II)
3. Neutronenstreuung (ICS-1)

Research Program(s):

1. 451 - Soft Matter Composites (POF2-451) (POF2-451)
2. 54G - JCNS (POF2-54G24) (POF2-54G24)

Experiment(s):

1. J-NSE: Neutron spin-echo spectrometer (NL2ao)
2. SPHERES: Backscattering spectrometer (NL6S)

Appears in the scientific report 2014

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Database coverage:
; ; ; ; Nationallizenz ; SCOPUS

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