Measurement of low-energy antiproton detection efficiency in BESS below 1 GeV
Instrumentation and Detectors
2009-11-07 v2
Abstract
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.
Keywords
Cite
@article{arxiv.physics/0105003,
title = {Measurement of low-energy antiproton detection efficiency in BESS below 1 GeV},
author = {Y. Asaoka and K. Yoshimura and T. Yoshida and K. Abe and K. Anraku and M. Fujikawa and H. Fuke and S. Haino and K. Izumi and T. Maeno and Y. Makida and N. Matsui and H. Matsumoto and H. Matsunaga and M. Motoki and M. Nozaki and S. Orito and T. Sanuki and M. Sasaki and Y. Shikaze and T. Sonoda and J. Suzuki and K. Tanaka and Y. Toki and A. Yamamoto},
journal= {arXiv preprint arXiv:physics/0105003},
year = {2009}
}
Comments
13 pages, 7 figures