Foto del docente

Andrea Castro

Associate Professor

Department of Physics and Astronomy "Augusto Righi"

Academic discipline: FIS/01 Experimental Physics

Teaching

Dissertation topics suggested by the teacher.

SND@LHC EXPERIMENT AT CERN

SND@LHC is a new experiment in the panorama of particle physics, approved in March 2021 by CERN with the aim of collecting data at the Large Hadron Collider (LHC) from 2022 to 2025.

SND@LHC will directly observe very high energy neutrinos (TeV) produced in the proton-proton (p-p) collisions of LHC for the first time. All three neutrino flavors (electron, muon, tau) will be studied. Neutrinos are today the only certain anomaly in particle physics. In contrast to what is theorized in the Standard Model, they have a non-zero mass and not determined by the Higgs mechanism. There must be something still unknown to us. But so far the data on neutrino interactions with matter are incomplete. Studies with electron neutrinos are rare. Those with tau neutrinos very rare. The SND@LHC detector is compact (0.6x0.8x2.5 cubic meters), placed in the LHC tunnel at 480 m from ATLAS and intercepts the intense flux of neutrinos emitted at a very small angle in p-p collisions. By interacting with the SND@LHC material (0.8 tons of tungsten), the neutrinos produce particles that cross planes of nuclear emulsions and scintillating fibers, whose signals make it possible to reconstruct and visualize the event. Downstream of the target, planes of plastic scintillators read by silicon photodiodes (SiPM), inserted between iron blocks, identify the neutrino species and measure the energy released in the interaction.

Some possible topics of the Master's thesis are:

  • Reconstruction of events for the observation of neutrino interactions produced in p-p collisions. The thesis concerns the development of the measurement and analysis system of nuclear emulsions and the application on the first real events of neutrino interactions.
  • Identification of muons for the observation of neutrino interactions
    produced in p-p collisions. The thesis concerns the development of the measurement and analysis system with scintillators for the identification of muons, and the application for the selection of the first real events from neutrino interactions

For further information and any three-year thesis, please contact:

  • maurizio.Spurio@unibo.it
  • andrea.Castro@unibo.it
  • marco.Dallavalle@bo.infn.it