TY - JOUR
T1 - A new scanning system for alpha decay events as calibration sources for range-energy relation in nuclear emulsion
AU - Yoshida, J.
AU - Kinbara, S.
AU - Mishina, A.
AU - Nakazawa, K.
AU - Soe, M. K.
AU - Theint, A. M.M.
AU - Tint, K. T.
N1 - Funding Information:
This work has been supported by JSPS KAKENHI Grants Number 23224006 and MEXT Grants Numbers 15001001, 24105002 (Grant-in-Aid for Scientific Research on Innovative Areas 2404). We thank Ms. A. Sawa, Mr. T. Kanda and Mr. T. Sugimura for their contributions in construction the prototype-system. We thank Prof. K. Hoshino, Prof. K. Itonaga, Dr. A. A. Min and Dr. H. N. Kyaw for many helpful discussions.
Publisher Copyright:
© 2016 Elsevier B.V.
PY - 2017/3/1
Y1 - 2017/3/1
N2 - A 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.
AB - A 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.
KW - Hypernucleus
KW - Nuclear emulsion
KW - Range-energy relation
KW - Vertex picker
KW - α Decay
UR - http://www.scopus.com/inward/record.url?scp=85007413993&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85007413993&partnerID=8YFLogxK
U2 - 10.1016/j.nima.2016.11.044
DO - 10.1016/j.nima.2016.11.044
M3 - Article
AN - SCOPUS:85007413993
VL - 847
SP - 86
EP - 92
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
SN - 0168-9002
ER -