TY - JOUR
T1 - Cosmic-ray test of a time-of-flight detector for double-strangeness experiments at J-PARC
AU - Kim, S. H.
AU - Hwang, S. H.
AU - Ahn, J. K.
AU - Ekawa, H.
AU - Hayakawa, S.
AU - Hong, B.
AU - Hosomi, K.
AU - Imai, K.
AU - Kim, M. H.
AU - Lee, J. Y.
AU - Moon, T. J.
AU - Ryu, S. Y.
AU - Sako, H.
AU - Takahashi, T.
AU - Tanida, K.
N1 - Funding Information:
This research was supported by the National Research Foundation of Korea (Grant no. (2012R1A2A1A01011926) ), BK21-Plus Program (Initiative for Creative and Independent Scientist) , a Grant-in-Aid for Scientific Research on Innovative Areas from MEXT (Grant no. (24105002) ), and a Grant-in-Aid for Scientific Research (A) from JSPS (Grant no. (24244038) ).
Publisher Copyright:
© 2015 Elsevier B.V. All rights reserved.
PY - 2015/6/10
Y1 - 2015/6/10
N2 - We have developed a time-of-flight (ToF) array consisting of 24 plastic scintillators for triggering and timing measurements in a series of planned experiments to study double-strangeness hadronic and nuclear systems at the K1.8 beamline of J-PARC. Each ToF scintillator is 180 cm long with a cross-section of 8×3cm2, and is read out by H1949-50 photomultiplier tubes at both ends. The timing and attenuation properties of the scintillators are measured using cosmic-ray muons and β rays from 90Sr. The cosmic-ray muon events are triggered by three pairs of 120-cm-long plastic scintillators, sandwiching the ToF array. The intrinsic time resolutions of the scintillators are estimated to be in the range 60-100 ps, which is adequate for reliable separation between π and K at 1.2GeV/c. The attenuation length is measured to be approximately 210 cm, which is half that for a bulk scintillator.
AB - We have developed a time-of-flight (ToF) array consisting of 24 plastic scintillators for triggering and timing measurements in a series of planned experiments to study double-strangeness hadronic and nuclear systems at the K1.8 beamline of J-PARC. Each ToF scintillator is 180 cm long with a cross-section of 8×3cm2, and is read out by H1949-50 photomultiplier tubes at both ends. The timing and attenuation properties of the scintillators are measured using cosmic-ray muons and β rays from 90Sr. The cosmic-ray muon events are triggered by three pairs of 120-cm-long plastic scintillators, sandwiching the ToF array. The intrinsic time resolutions of the scintillators are estimated to be in the range 60-100 ps, which is adequate for reliable separation between π and K at 1.2GeV/c. The attenuation length is measured to be approximately 210 cm, which is half that for a bulk scintillator.
KW - Particle identification
KW - Plastic scintillator
KW - Time-of-flight detector
UR - http://www.scopus.com/inward/record.url?scp=84930630853&partnerID=8YFLogxK
U2 - 10.1016/j.nima.2015.05.046
DO - 10.1016/j.nima.2015.05.046
M3 - Article
AN - SCOPUS:84930630853
SN - 0168-9002
VL - 795
SP - 39
EP - 44
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 -