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First simulations of FAZIA Napoli 3-5 September 2007

First simulations of FAZIA Napoli 3-5 September 2007. Technical requirements for the physics of FAZIA. Dynamics and EOS observables @ EURISOL  A IMF , b  4 p , pulse shape (  high granularity ) Exotic states @ SPIRAL/SPIRAL2  high-resolution charged particle correlations

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First simulations of FAZIA Napoli 3-5 September 2007

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  1. First simulations of FAZIA Napoli 3-5 September 2007

  2. Technical requirements for the physics of FAZIA • Dynamics and EOS observables @ EURISOL •  AIMF , b •  4p, pulse shape ( high granularity) • Exotic states @ SPIRAL/SPIRAL2 •  high-resolution charged particle correlations •  high granularity, |k| resolution • Evaporation, level densities @ SPIRAL/SPIRAL2 •  A1 , E* •  4p, pulse shape ( high granularity), low thresholds, coupling with spectrometers, neutron detectors • …….And the other physics cases of the proposal, for further study…… •  Very adaptable geometry (beams, detectors)

  3. Simulation • Geometry : • INDRA • INDRA4 • (~ Chimera) • INDRA16 • (FAZIA?) • Configuration • for test: • 2 arrays in • 2 chambers : Neutron detector ? Target Beam • Spherical array + • Surrounded by • neutron detectors? • Annular array • High granularity (strips?) • Replaceable with a spectrometer

  4. Simulation  [deg] INDRA [deg] • Options for the detector : • Aup to element  Zn, • otherwise EPAX • |k| with uncertainty 5% • Double hits  A, K adds • 4p neutron detectors: • efficiency (~20%), • |kn| with uncertainty15% • Geometric coverage ~ 87%

  5. Simulation • 36Ar+58Ni 12 A MeV  Select c.n. 94Pd at 241 MeV, 1.8 cm/ns (lab) • 129Xe+Sn 50 A MeV  Select q.p. 120Sn at 400 MeV, 9 cm/ns (lab) INDRA

  6. Simulation • Reactions : • GEMINI • 12C+24Mg 100 A MeV  Select 12C at 30 MeV, 5.3 cm/ns (lab) • 36Ar+58Ni 12 A MeV  Select c.n. 94Pd at 241 MeV, 1.8 cm/ns (lab) • 129Xe+Sn 50 A MeV  Select q.p. 120Sn at 400 MeV, 9 cm/ns (lab) • !!! : Too good agreement with EPAX • HIPSE • 58Ni+58Ni / 68Ni+68Ni40 A MeV  q.p. + q.t. • 112Sn+112Sn / 132Sn+132Sn40 A MeV  q.p. + q.t. • QMD • 58Ni+58Ni / 68Ni+68Ni150 A MeV  q.p. + q.t. • 112Sn+112Sn / 132Sn+132Sn150 A MeV  q.p. + q.t.

  7. Charged-particle correlations @ SPIRAL/SPIRAL2 • 12C+24Mg 100 A MeV  • Select 12C at 30 MeV, 5.3 cm/ns (lab) • Nuclear structure in exotic (non-Weißkopf) decays: • Probing excited heavy cluster states • 12C decays in Li+Li • |k| perfectly measured: • INDRA: not adapted • INDRA4: main peak • INDRA16: 2 peaks

  8. |k| with uncertainty 0%, 2%, 5% Forward angles |k| is measured with an uncertainty INDRAINDRA4 INDRA16

  9. |k| with uncertainty 0%, 2%, 5% Backward angles |k| is measured with an uncertainty INDRAINDRA4 INDRA16

  10. Dynamics and EOS observables @ EURISOL • Etrans12 measured precisely with • any granularity  INDRA • Correspondence with b (from the model) • N/Z of IMF as a function of Etrans12 • A up to Z=3: not adapted • A up to Z=28 • (all IMF identified): resolved • Small Etrans12 may suffer from • the hole of the beam

  11. Dynamics and EOS observables @ EURISOL

  12. Average neutron spectra (preliminary) • Neutron multiplicity by • A-Z in complete events • Mean neutron spectrum • measured with a surrounding • array, to be defined

  13. Average neutron spectra (preliminary)

  14. Conclusions • FAZIA simulator • Geometric options: OK • More detailed detector properties: Next • Physics cases  model simulations  filtering  solutions for FAZIA

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