Sumários
Ionization chambers
7 Outubro 2020, 14:00 • Valentina Lozza
- Introduction
- Operation modes
- Historical detectors: could chamber, bubble chamber, emulsion based detectors
- Mechanism of gas ionisation: drift and diffusion velocities
- Ion mobility
- Diffusion with electric and magnetic field
- Operation regime for gaseous detectors
- Ion chamber and proportional mede
- Signal formation and shape
Tutorial: Root
2 Outubro 2020, 08:00 • Valentina Lozza
Small Root tutorial:
- macros
- define variables
- 1D -2D plots
Strong and weak interactions
30 Setembro 2020, 14:00 • Valentina Lozza
Energy loss by strong and weak interactions.
Strong interaction:- cross section and interaction length
- electromagnetic and hadronic showers
- Spallation reaction and their importance for rare event searches
- photonuclear reactions
- neutron interaction with matter
- thermal neutron capture cross section
- Sources of neutrinos
- First experiment for neutrino detection
- neutrino interaction with matter
- charge and neutral currents
- Signal identification
Interaction of particles with matter: electrons and photons
25 Setembro 2020, 08:00 • Valentina Lozza
Solve exercise: Bethe-Bloch for alpha particles
Energy loss by electrons, positrons:
- ionisation effects
- bremstrahlung radiation: dependance on Z, screening effect and critical energy
- radiation length X0
- Other types of scattering: Moller, Bhabha, annihilation
Energy loss by gammas:
- photoelectric effect
- Compton scattering
- Pair creation
Energy loss in matter: heavy charged particles
23 Setembro 2020, 14:00 • Valentina Lozza
- Cross section
- Mean free path
- Process of interaction of radiation with matter: energy loss of heavy particles (alpha, protons,...), formula of Bohr
- Bethe-Bloch formula
- Cherenkov radiation + application
- bremsstrahlung and ionisation