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Calibration status of the SuperNEMO calorimeter

Not scheduled


Ms Cloé Girard-Carillo (Laboratoire de l'Accélérateur Linéaire)


The SuperNEMO experiment aims to test the Majorana nature of neutrinos, looking for the neutrinoless double beta decay.
The final detector's goal is to reach a sensitivity of $10^{26}$ years on the $^{82}$Se $0\nu\beta\beta$ decay half-life.
The SuperNEMO demonstrator is under construction with $6.23$ kg of $^{82}$Se.
Decay electrons are tracked in a wire chamber, and their energies measured calorimetrically.
The calorimeter is composed of $712$ optical modules: plastic scintillators, mainly coupled with $8''$ photomultipliers.
It achieves $8$% FWHM energy and $400$ ps time resolution, at $1$ MeV.
Calorimeter commissioning began in $2019$.
The calorimeter's energy response was calibrated using the internal $^{208}$Tl spectrum, and photomultipliers' gains were equalised at $1$ MeV.
A Cobalt-$60$ source, emitting two coincident gammas, was used to determine time resolution.
The demonstrator's calorimeter performance is presented.


Calorimeter commissioning data confirms SuperNEMO double-beta detector meets performance goals.

Primary author

Ms Cloé Girard-Carillo (Laboratoire de l'Accélérateur Linéaire)


Mr Axel Pin (CENBG) Mr Hichem Tedjditi (CPPM)

Presentation materials