Si Λ ViO: A trigger for Λ -Hyperons

The production of bound kaon–nucleon-states (kaonic-cluster) in the reaction p + p → [ ppK - ] + K + should be investigated in a dedicated measurement at the FOPI detector system at the SIS-accelerator of GSI, by looking for the decay [ ppK - ] → p + Λ → p + p + π - . To select the final states, the...

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Published inNuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Vol. 617; no. 1; pp. 300 - 302
Main Authors Münzer, Robert, Fabbietti, Laura, Berger, Martin, Hartmann, Olaf
Format Journal Article
LanguageEnglish
Published Elsevier B.V 11.05.2010
Subjects
Accelerators
Accumulation
Decay
Detectors
Kaonic-cluster-states
On-line systems
Online
Spectrometers
Kaonic-cluster-states
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Summary:The production of bound kaon–nucleon-states (kaonic-cluster) in the reaction p + p → [ ppK - ] + K + should be investigated in a dedicated measurement at the FOPI detector system at the SIS-accelerator of GSI, by looking for the decay [ ppK - ] → p + Λ → p + p + π - . To select the final states, the detector system Si Λ ViO has been build up as a trigger for Λ -Hyperons. This detector consists of two layers of segmented silicon-strip-detectors, which are able to measure online the particle multiplicity. These two layers are arranged such, that most of the Λ -Hyperons will decay between them. The trigger signal is generated by comparing online the hit multiplicity on the two layers.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0168-9002
1872-9576
DOI:10.1016/j.nima.2009.06.094