Gamma-hadron separation based on Čerenkov photon arrival time studies

Details Gamma-hadron separation based on Čerenkov photon arrival time studies Gamma-hadron separation based on Čerenkov photon arrival time studies

Apr 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000aipc..510..651c&link_type=abstract

THE FIFTH COMPTON SYMPOSIUM. AIP Conference Proceedings, Volume 510, pp. 651-655 (2000).

Computer Science

X- And Gamma-Ray Telescopes And Instrumentation

Scientific paper

We have carried out systematic Monte Carlo simulation studies of the timing information of Čerenkov photons produced by VHE gamma rays and hadronic primaries. We have investigated several measurable parameters such as radius of the shower front, pulse shape parameters (rise time, decay time and FWHM) and arrival time jitter of Čerenkov photons. The efficiency of these parameters to discriminate between gamma ray and hadronic showers has been studied in terms of quality factor. This study has been carried out for vertical as well as inclined showers and for various altitudes of observation. Among the parameters considered here, Čerenkov pulse decay time and relative arrival time jitter of Čerenkov photons are found to be particularly useful. .

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