Measurement of low-energy antiproton detection efficiency in BESS below 1 GeV

Preprint

23 September 2002

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.physics/0105003

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 $\pm$5%, compared with the previous estimation of $\pm$15% which was the dominant uncertainty for measurements of cosmic-ray antiproton flux.

Keywords

ANTIPROTON DETECTION EFFICIENCY
EFFICIENCY IN BESS
ENERGY ANTIPROTON
SYSTEMATIC ERROR
UNCERTAINTY

All Related Versions

Version 1, 2001-05-01, ArXiv
Version 2, 2002-09-23, ArXiv
Published version: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 489 (1-3), 170.

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