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.
N1 - Funding Information:
We appreciate support during accelerator beam experiments by Mr. M. Taino, Dr. M. Ieiri (KEK), Dr. A. Ichikawa (Kyoto Univ.), Mr. H. Takahashi (Kyoto Univ.), and other members of E373 group. We also thank Mr. S. Tsuno (Tsukuba Univ.) and Dr. H. Iwasaki (KEK) for allowing use of their drift chambers (DC1, DC2). This work was supported by a Grant-in-Aid for Scientific Research from the Japanese Ministry of Education, Science and Culture. Analysis was performed using the computing facilities at ICEPP, the University of Tokyo. Some of the authors were supported by Japan Society for the Promotion of Science.
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
UR - http://www.scopus.com/inward/record.url?scp=0037151398&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0037151398&partnerID=8YFLogxK
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 -