INFN - Genova

 

CRYOGENIC DETECTORS GROUP
 
 
 
 
 
 
 

EXPERIMENTAL ACTIVITIES

The group is involved in cryogenic detectors development and in their application in Physics Experiments.
Main interest are several aspect of Neutrino Physics.
Future application in space Astrophysics are foreseen.
Our detectors are mainly intended for High energy resolution spectroscopy: beta spectroscopy and X-ray spectroscopy.
The experiments on beta spectra with an unprecedented energy resolution, to set new limits to neutrino mass, require deep investigations on a number of effects involving atomic, molecular and solid state physics.
Recently the modulation of the 187Re beta spectrum due to the Crystal lattice was for the first time observed [12].
This effect, Beta Environmental Fine Structure (BEFS) or Koonin oscillations, is similar to the well known EXAFS and might become a useful tool for solid state investigations.
Deeper investigation are neverthless required to set accurate limits on neutrino mass.

      RESEARCH ACTIVITIES:

        studies on thermalization processes in superconductors,
        fabrication of transition edge thermometers,
        low noise cryogenic electronics, squid electronics


     LABORATORY FACILITIES:

        Cryostats:

        Oxford 200 TLE dilution refrigerarator
        Oxford Kelvinox dilution refrigerator.
        Adiabatic demagnetization cryostats

        Thin film fabrication systems:

        Electron gun evaporation
        Sputtering and thermal evaporation
        Laser ablation deposition System

        microlithography system.
 
 

 
LAURA OPISSO

Scientific Secretariat INFN Genova