TY - JOUR
T1 - Measurement of low-energy antiproton detection efficiency in BESS below 1 GeV
AU - Asaoka, Y.
AU - Yoshimura, K.
AU - Yoshida, T.
AU - Abe, K.
AU - Anraku, K.
AU - Fujikawa, M.
AU - Fuke, H.
AU - Haino, S.
AU - Izumi, K.
AU - Maeno, T.
AU - Makida, Y.
AU - Matsui, N.
AU - Matsumoto, H.
AU - Matsunaga, H.
AU - Motoki, M.
AU - Nozaki, M.
AU - Orito, S.
AU - Sanuki, T.
AU - Sasaki, M.
AU - Shikaze, Y.
AU - Sonoda, T.
AU - Suzuki, J.
AU - Tanaka, K.
AU - Toki, Y.
AU - Yamamoto, A.
PY - 2002/8/21
Y1 - 2002/8/21
N2 - An accelerator experiment was performed using a low-energy antiproton beam to measure antiproton detection efficiency of BESS, a balloon-borne spectrometer with a superconducting solenoid. Measured efficiencies showed good agreement with calculated ones derived from the BESS Monte Carlo simulation based on GEANT/GHEISHA. With detailed verification of the BESS simulation, the relative systematic error of detection efficiency derived from the BESS simulation has been determined to be ±5%, compared with the previous estimation of ±15% which was the dominant uncertainty for measurements of cosmic-ray antiproton flux.
AB - An accelerator experiment was performed using a low-energy antiproton beam to measure antiproton detection efficiency of BESS, a balloon-borne spectrometer with a superconducting solenoid. Measured efficiencies showed good agreement with calculated ones derived from the BESS Monte Carlo simulation based on GEANT/GHEISHA. With detailed verification of the BESS simulation, the relative systematic error of detection efficiency derived from the BESS simulation has been determined to be ±5%, compared with the previous estimation of ±15% which was the dominant uncertainty for measurements of cosmic-ray antiproton flux.
KW - Antiproton detectio efficiency
KW - BESS
KW - Detector simulation
KW - GEANT/GHEISHA
KW - KEK PS
KW - Systematic error
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U2 - 10.1016/S0168-9002(02)00804-5
DO - 10.1016/S0168-9002(02)00804-5
M3 - Article
AN - SCOPUS:0037151398
SN - 0168-9002
VL - 489
SP - 170
EP - 177
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 - 1-3
ER -