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dc.contributor.authorYoshida, J.
dc.contributor.authorKinbara, S.
dc.contributor.authorMishina, A.
dc.contributor.authorNakazawa, K.
dc.contributor.authorMyint Kyaw Soe
dc.contributor.authorAye Moh Moh Theint
dc.contributor.authorKhin Than Tint
dc.description.abstractA new scanning system named “Vertex picker” has been developed to rapid collect alpha decay events, which are calibration sources for the range-energy relation in nuclear emulsion. A computer-controlled optical microscope scans emulsion layers exhaustively, and a high-speed and high-resolution camera takes their micrographs. A dedicated image processing picks out vertex-like shapes. Practical operations of alpha decay search were demonstrated by emulsion sheets of the KEK-PS E373 experiment. Alpha decays of nearly 28 events were detected in eye-check work on a PC monitor per hour. This yield is nearly 20 times more effective than that by the conventional eye-scan method. The speed and quality is acceptable for the coming new experiment, J-PARC E07.en
dc.publisherNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipmenten
dc.relation.ispartofseriesVol. 847;
dc.subjectRange-energy relationen
dc.subjectα Decayen
dc.subjectVertex pickeren
dc.subjectNuclear emulsionen
dc.titleA new scanning system for alpha decay events as calibration sources for range-energy relation in nuclear emulsionen

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