ESPERIMENTO NUCL-EX Partecipanti 2019 Collaborazioni: Dinamica delle reazioni nucleari tra ioni pesanti SPES - Reazioni a bassa energia, interazione tra dinamica e struttura nucleare: clustering, pre-equilibrio, isospin FAZIA - Reazioni ad energie intermedie: Eq. di stato nucleare, trasporto di isospin Partecipanti 2019 Collaborazioni: SPES FAZIA (Ita, Fr, Sp,,Po, USA) ACTAR/ATS (Ita, Fr, Sp, B) Altro (India) Sede Ricercatori Tecnologi FTE Catania 4 3.3 Firenze 13 10.5 Legnaro 8 5.3 Napoli 3 1 3.2 Padova 2.0 32 Ricercatori (24.3 FTE) Rappresentanti Nazionali: S. Barlini (FI), T. Marchi (LNL) Padova apre la sigla NUCLEX: D. Fabris (80%), S. Moretto (40%), C.L. Fontana (40%), L. Stevanato (40%)

FAZIA : Attività 2017 – 2018 (LNS, GANIL) (I) New results on the 80Kr+40,48Ca@35AMeV system on the isospin transport phenomena and Nuclear Equation of State studies (G.Pastore PhD Thesis, University of Florence) E/A (ρ) = Es(ρ) + Esym(ρ) β² β=(ρn-ρp)/ρ = (N-Z)/A around ρ0 g<1 Asysoft, g>1 Asystiff γ = L/(3S0) Asysoft Asystiff <N>/Z for the different IMF’s in coincidence with QP in the 80Kr+48Ca@35AMeV reaction compared with AMD code (with GEMINI++ as afterburner). The Asy-Stiff version of the nuclear EoS seems to better reproduce the experimental data. γ = 0.5 γ = 1

FAZIA : Attività 2017 – 2018 (LNS, GANIL) (II) Completed experiment at LNS (FAZIACOR): 20Ne+12C@25,50AMeV and 32S+12C@25,50AMeV to explore in-medium effects on nuclear structure properties of unbound, Hoyle and cluster states, by means of multi-particle correlations. Analysis in progress. D. Gruyer, LPC Caen Preliminary data on Hoyle state sequential decay Preliminary Na-X correlations Interplay structure/dynamics Fragmentation data to probe nuclear particles unbound states. Discreate structure to probe reaction dynamics.

SPES : Attività 2017 – 2018 (LNL) (I) ACLUST2: A study on 4 reactions forming 46Ti* EXP Data complete events (Ztot=22): Central collision selection comparison with Gemini++ Statistical model with different emission barrier configurations: from spherical to superdeformed PHD Thesis M. Cicerchia UniPd Entrance channel Ebeam, lab Mass Asymm 𝝈 𝒇𝒖𝒔 E* Lab. CN Vel. Beam + Target MeV MeV/u mb cm/ns 16O + 30Si 128 8 0,30 1070 98,4 1,37 111 7 1081 88,0 1,28 18O + 28Si 126 0,22 1110 98,5 1,44 19F + 27Al 133 0,17 1100 103,5 1,52 LCP angular distributions (Ztot=22) LCP multiplicity spectra (Ztot=22) p a LCP spectra for complete events (Ztot=22) preliminary

SPES : Attività 2017 – 2018 (LNL) (II) Completed, after almost 3 years, in beam test of GARFIELD new electronics 16O+12-13C,27Al @ 105 MeV which allows for: Higher ADC resolution (14 bits) New FPGA, in addition to old DSP, with NEW on-line algorithm: Trapezoidal Shaper (Energy) Bipolar Shaper (Trigger) Interpolation to get Imax from charge (PSA, identification) Tested on Rco Silicon detectors, acquired with both Old and New electronics New PSA With new on-line filter DSP - TRise FPGA - TRise FPGA - Imax DSP algorithms successfully tested with 14-bits signals Online filter is working well Imax – TRise apparantely similar performances -> More detailed studies are need

SPES : Attività 2017 – 2018 (LNL – LNS – GANIL) (III) ATS: ACTAR Demonstrator transported to LNL. ‘Performance test and optimization of the ACTAR Demonstrator for heavy ion beams experiments’ Exp. at LNS ATS: Installation of the setup. Detector refurbishment and Gas System by LNL – Serv. Utenti Mechanics by Bologna and LNL Off. Meccanica ACTAR Demonstrator 2k pads, T. Roger et al, NIM A 895 (2018) 126 OSCAR: A modular and versatile Particle Correlator. (D.Dell’Aquila et al., NIM A877 (2018) 227) ‘New investigation on 32S(3He,d)33Cl reaction at 10.4 MeV’ Exp. at CN-LNL luglio 2018 OSCAR-Plane ANCILLARY Detector for ATS by INFN - CT ATS: Code Development of Particle Identification using Bragg Curve (Track & Vertex Fitting) K. Hagiwara, Okayama Univ./LNL

SPES : Attività 2019 NEW GROUP Cristiano Lino Fontana (UNIPD Ric. Tipo A – INFN Padova) Sandra Moretto (UNIPD Ric. – INFN Padova) Luca Stevanato (UNIPD Ric. Tipo A – INFN Padova) KNOW HOW and EXPERTISE Scintillator Detector Study Electronics characterization Neutron and Gamma discrimination: detectors and software Monte Carlo simulations (Geant4, MCNP, PENELOPE) Middleware Software Analysis Development Development of a Neutron detectors system to couple with ATS Neutron detectors system test bench: Detector : good PSD performances (like EJ-276G) Read-out : SiPM readout tests for a versatile solution Electronics + DAQ : custom DAQ and analysis development for different physics test cases MC Simulations: optimization of the exp setup, validation of the exp results

Attività 2018 - 2019 FAZIA: Esperimento FAZIA0: ‘Cross section measurements for 12C +12C and 12C + proton systems at 50-80 MeV/u with FAZIA detector’ ai LNS – Luglio 2018 Spostamento del rivelatore a GANIL. Commissioning setup INDRA-FAZIA. 2018-2019 Proposals per PAC GANIL ‘Isospin transport and Density Dependence of the Symmetry Energy’ - Possibili esperimenti a GANIL. Seconda metà 2019 SPES: OSCAR: Esperimento TAUDEU ‘New investigation on 32S(3He,d)33Cl reaction at 10.4 MeV’ ai LNL (CN) – Luglio 2018. ATS: Esperimento ai LNS ‘Performance test and optimization of the ACTAR Demonstrator for heavy ion beams experiment’ – Dic 2018/ Gen 2019. ATS: Continuazione installazione punto misura LNL. GARFIELD: manutenzione/upgrade. ATS/GARFIELD/OSCAR: Proposals LNL 2019 in funzione delle call e della disponibilità di fascio nelle diverse postazioni sperimentali. Sviluppo rivelatori Neutroni.

Richieste 2019 Richieste Servizi CAPITOLO Richieste (k€) s.j. (k€) Motivazione MISSIONI 9,5 14,0 Turni e Riunioni CONSUMO 2,0 3,0 Scintillatore, Meccanica, Elettronica (s.j. Flangia vuoto per ATS) APPARATI 15,0 Rivelatore g per ATS INVENTARIO 8,0 Rivelatori neutroni, SiPM, Elettronica TOTALE 34,5 17,0 Richieste Servizi Off. Elettronica: Realizzazione flangia da vuoto per ATS -> 1,0 mese/uomo Off. Meccanica: Lavorazioni per rivelatori neutroni -> 0,5 mesi/uomo