Status of SuperNEMO experiment and last results of NEMO3

Abstract : SuperNEMO is a next generation neutrinoless double beta decay experiment with a design capability to reach a half-life sensitivity of 1026 years corresponding to an effective Majorana neutrino mass of ⟨mββ⟩ < 50 - 100 meV. This detector has the unique capability to identify the electrons allowing to reduce drastically the background coming from the natural radioactivity. It measures also all kinematical parameters (individual energy of the ellectrons and angular distribution) and in case of signal it could allow to determine the process leading to neutrinoless double beta decay. We will present the status of SuperNEMO construction and the improvements foreseen compared to NEMO-3. The R&D started in 2007 and today all the requirements are achievable. The collaboration is now equipped with very sensitive complementary detectors (for radon: diffusion apparatus, concentration line and emanation tank and for radiopurity: BiPo, HPGe...). Underground early commissioning of one quarter of tracker and one brick of calorimeter is expected by the end of this year and data takin is expected second semester 2016. We will also present the last last esults from NEMO-3 experiment located in the Modane Underground Laboratory researched the neutrinoless double beta decay from 2003 to 2011. Seven isotopes were studied with the unique tracko-calo technique including the 2 most important in term of sensitivity with 7kg of 100Mo and 1kg of 82Se.
Type de document :
Communication dans un congrès
Conference on High Energy Physics 2015 - HEP2015, Jul 2015, Vienna, Austria
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A. Remoto. Status of SuperNEMO experiment and last results of NEMO3. Conference on High Energy Physics 2015 - HEP2015, Jul 2015, Vienna, Austria. 〈in2p3-01186369〉



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