TY - JOUR
T1 - Automatic track following system to study double strangeness nuclei in nuclear emulsion exposed to the observable limit
AU - Goto, Ryosuke
AU - Mishina, Akihiro
AU - Nakanisi, Yoshiaki
AU - Nakashima, Daisuke
AU - Yoshida, Junya
AU - Nakazawa, Kazuma
N1 - Publisher Copyright:
© 2016 Elsevier B.V.
PY - 2017/3/11
Y1 - 2017/3/11
N2 - An automatic track following system has been successfully developed to follow tracks in nuclear emulsion sheets exposed with beam up to the limit to be observed for the first time. The track followed rate of the system is 99.5% with the assistance of the new techniques. The working speed for a track is less than 1 min through one thick emulsion sheet, whereas it is 15 times faster than that of semiautomatic system with human. The system working for 24 h is applied for the E07 experiment at J-PARC and makes it possible to detect ~102 nuclei with double strangeness (S=−2 nuclei) within one year. Regarding analyses to identify nuclear species of S=−2 nuclei, the system shows quite decent job for significant steps such as following tracks emitted to spherical directions from S=−2 nuclei, measurement of lengths of followed tracks, and so on.
AB - An automatic track following system has been successfully developed to follow tracks in nuclear emulsion sheets exposed with beam up to the limit to be observed for the first time. The track followed rate of the system is 99.5% with the assistance of the new techniques. The working speed for a track is less than 1 min through one thick emulsion sheet, whereas it is 15 times faster than that of semiautomatic system with human. The system working for 24 h is applied for the E07 experiment at J-PARC and makes it possible to detect ~102 nuclei with double strangeness (S=−2 nuclei) within one year. Regarding analyses to identify nuclear species of S=−2 nuclei, the system shows quite decent job for significant steps such as following tracks emitted to spherical directions from S=−2 nuclei, measurement of lengths of followed tracks, and so on.
KW - Automatic track following sytem
KW - Beam position pattern matching
KW - Detection boundaries of emulsion layers
KW - E07 experiment
KW - Track recognition
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U2 - 10.1016/j.nima.2016.12.046
DO - 10.1016/j.nima.2016.12.046
M3 - Article
AN - SCOPUS:85007417185
SN - 0168-9002
VL - 848
SP - 66
EP - 72
JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
ER -
