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Development of G-Numen, the gamma spectrometer of the NUMEN project

Grant number: 19/22935-8
Support type:Scholarships abroad - Research
Effective date (Start): January 29, 2020
Effective date (End): August 06, 2020
Field of knowledge:Physical Sciences and Mathematics - Physics - Nuclear Physics
Principal researcher:Jose Roberto Brandão de Oliveira
Grantee:Jose Roberto Brandão de Oliveira
Host: Cappuzzello Francesco
Home Institution: Instituto de Física (IF). Universidade de São Paulo (USP). São Paulo , SP, Brazil
Research place: Istituto Nazionale di Fisica Nucleare, Catania (INFN), Italy  


The NUMEN project aim is the extensive measurement of Double Charge Exchange (DCE) nuclear reactions which have a strict connection with Neutrino Physics. From these measurements, relevant information can be obtained regarding the Nuclear Matrix Elements of Neutrinoless Double Beta Decay (NLDBD) which could guide the theoretical development of new physics beyond the Standard Model. The G-Numen project is the gamma detector array spectrometer which in several cases is needed for the separate measurement of the production cross sections of the ground state (gs) and first excited states of project-like and target-like DCE reaction fragments (PLF, TLF, respectively). The gamma spectrometer will operate in coincidence with the PLF detected at the focal plane of the MAGNEX magnetic spectrometer system. Its development, through simulations, prototype tests and mechanical design, constitute the main objective of the present request. Additional support measurements will be performed, including a DCE experiment with present-day experimental conditions, in order to validate the simulations and qualify the detectors and associated electronics. The activities will be developed at the LNS/INFN Catania, Italy. (AU)

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