Measurement of stopping beam distributions in the PIBETA detector

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dc.creatorFrlez, E.
dc.creatorBychkov, M.
dc.creatorLi, W.
dc.creatorPocanic, D.
dc.date2006-08-09
dc.date.accessioned2026-07-07T11:04:34Z
dc.date.available2026-07-07T11:04:34Z
dc.descriptionPrecise calculation of the geometrical acceptance of a large solid angle detector with an integrated stopping target relies on precise knowledge of the beam geometry. We describe four alternative methods that we used to measure the beam stopping distributions in the PIBETA detector active target: (i) light response of segmented target elements to incident beam particles, (ii) back-tracking of charged particles from pi+ and mu+ decays using multi-wire proportional chambers, (iii) volume distribution of the Dalitz decay (pi0->gamma e+e-) event vertices, and (iv) the opening angle distribution of two pi0 photons originating from the beta decay of pi+ at rest. We demonstrate consistent results obtained by these four independent approaches and show how particular beam stopping distributions affect the detector's geometrical acceptance.
dc.description38 pages, 16 postscript figures, 2 tables, LaTeX, submitted to Nucl. Instrum. Meth. A
dc.identifierhttps://arxiv.org/abs/hep-ex/0608027
dc.identifierhttp://arxiv.org/abs/hep-ex/0608027
dc.identifierNucl.Instrum.Meth.A573:371-383,2007
dc.identifierdoi:10.1016/j.nima.2007.01.083
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/188937
dc.subjectHigh Energy Physics - Experiment
dc.titleMeasurement of stopping beam distributions in the PIBETA detector
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