TY - JOUR
T1 - The balloon-borne electron telescope with scintillating fibers (BETS)
AU - Torii, S.
AU - Tamura, T.
AU - Tateyama, N.
AU - Yoshida, K.
AU - Ouchi, Y.
AU - Yamagami, T.
AU - Saito, Y.
AU - Murakami, H.
AU - Kobayashi, T.
AU - Komori, Y.
AU - Kasahara, K.
AU - Yuda, T.
AU - Nishimura, J.
N1 - Funding Information:
We gratefully acknowledge the assistance in CERN-SPS experiments from Dr. L. Gatignon, Prof. P. Picci, and Dr. S. Suzuki. We wish to express our thanks to the crews of the Sanriku Balloon Center of ISAS who have supported the successful balloon flights. This work is supported by Grants-in-aid for Scientific Research (A) and for International Scientific Research (Field Research) of the Japan Ministry of Education, Science, Sports and Culture.
PY - 2000
Y1 - 2000
N2 - We describe a new detector system developed for high-altitude balloon flights to observe the cosmic-ray electrons above 10 GeV. The Balloon borne Electron Telescope with Scintillating (BETS) fibers instrument is an imaging calorimeter which is capable of selecting electrons against the large background of protons. The calorimeter is composed of a sandwich of scintillating optical-fiber belts and lead plates with a combination of three plastic scintillators for shower trigger. The total thickness of lead is 40 mm (∼ 7.1 r.l.) and the number of fiber belts is nine. In each belt, alternating layers are oriented in orthogonal (x and y) directions. Two sets of an intensified CCD camera are adopted for read-out of the scintillating fibers in the x and y direction, respectively. The accelerator beam tests were carried out to study the performance of detector for electrons in 1996 and for protons in 1997 at CERN-SPS. The instrument was successfully flown aboard high-altitude balloon in 1997 and 1998. It is demonstrated by the flight data that a reliable identification of the electron component has been achieved in 10-100 GeV and the energy spectrum has been obtained.
AB - We describe a new detector system developed for high-altitude balloon flights to observe the cosmic-ray electrons above 10 GeV. The Balloon borne Electron Telescope with Scintillating (BETS) fibers instrument is an imaging calorimeter which is capable of selecting electrons against the large background of protons. The calorimeter is composed of a sandwich of scintillating optical-fiber belts and lead plates with a combination of three plastic scintillators for shower trigger. The total thickness of lead is 40 mm (∼ 7.1 r.l.) and the number of fiber belts is nine. In each belt, alternating layers are oriented in orthogonal (x and y) directions. Two sets of an intensified CCD camera are adopted for read-out of the scintillating fibers in the x and y direction, respectively. The accelerator beam tests were carried out to study the performance of detector for electrons in 1996 and for protons in 1997 at CERN-SPS. The instrument was successfully flown aboard high-altitude balloon in 1997 and 1998. It is demonstrated by the flight data that a reliable identification of the electron component has been achieved in 10-100 GeV and the energy spectrum has been obtained.
KW - Balloon instrumentation
KW - Cosmic rays
KW - Electrons
KW - Scintillating fiber
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U2 - 10.1016/S0168-9002(00)00356-9
DO - 10.1016/S0168-9002(00)00356-9
M3 - Article
AN - SCOPUS:0034274540
SN - 0168-9002
VL - 452
SP - 81
EP - 93
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
IS - 1-2
ER -