High energy resolution GeV gamma ray detector
Abstract
We design a GeV gamma ray detector based on an electron-positron pair measurement by using the BESS-polar magnet and study it with the GEANT4 simulation code. We consider an additional counter to select an electron-positron pair for which the energy loss by bremsstrahlung is less than 100 MeV against AMS. We obtain a significantly low detector efficiency of 3%. However, an energy resolution better than 1% at 10-100 GeV is achieved by employing a parameter that enables us to obtain a line sensitivity that is almost indetical to that of the GLAST mission. The good energy resolution makes it possible to obtain the three-dimensional map of the neutralino dark matter annihilation line.
Cite
@article{arxiv.1010.1088,
title = {High energy resolution GeV gamma ray detector},
author = {S. Osone},
journal= {arXiv preprint arXiv:1010.1088},
year = {2010}
}
Comments
submitted to astroparticle physics journal, refused to review by many refreese for two years and rejected at last