A Monte Carlo study of the Sudbury Neutrino Observatory small test detector experiment

Details A Monte Carlo study of the Sudbury Neutrino Observatory small test detector experiment A Monte Carlo study of the Sudbury Neutrino Observatory small test detector experiment

Jan 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990cuoo.rept.....y&link_type=abstract

M.S. Thesis Carleton Univ., Ottawa (Ontario). Dept. of Physics.

Physics

Cerenkov Counters, Electromagnetic Interactions, Monte Carlo Method, Neutrinos, Photoelectrons, Photomultiplier Tubes, Astronomical Observatories, Computerized Simulation, Data Reduction, Electron Energy, Mathematical Models, Solar Observatories, Stellar Models

Scientific paper

A Monte Carlo study of the Sudbury Neutrino Observatory's small-scale prototype detector experiment is presented. This detector, called the Small Test Detector, consists of a cylindrical water-filled tank with 43 photomultiplier tubes arranged in a cylindrical array facing the center of the tank. Electrons are fired into the center of the tank at energies in the 2-11 MeV range and the responses of the photomultipliers are recorded for single electron events. The Monte Carlo simulation breaks down the electron's trajectory into small steps or cells; photons are simulated in a similar way to electrons. The modelling of the electromagnetic interactions that occur as a result of electrons entering the water (multiple scattering, bremsstrahlung, ionization energy loss, Cerenkov radiation, Compton scattering, and pair production by photons) is described. The simulated photoelectron yield as a function of incident electron energy, and the angular distributions of photomultiplier tube response for 3.0, 6.5, and 11.0 MeV electrons show excellent agreement with the experimental results.

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