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Catalina Curceanu LNF-INFN 12-16 October, ECT* (Trento)

AMADEUS As a matter of fact it is a fact of matter. Catalina Curceanu LNF-INFN 12-16 October, ECT* (Trento). n=1. p. n=2. K -. n=25. Proposal of an international facility at DA  NE2.

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Catalina Curceanu LNF-INFN 12-16 October, ECT* (Trento)

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  1. AMADEUS As a matter of fact it is a fact of matter Catalina Curceanu LNF-INFN 12-16 October, ECT* (Trento)

  2. n=1 p n=2 K- n=25 Proposal of an international facility at DANE2 From kaonic atoms to kaonic nuclei with DAFNE228-30 November 200531th LNF Scientific CommitteeC. Curceanu and J. ZmeskalDEAR/SIDDHARTA Collaboration

  3. The search for antikaon‐mediated deeply bound nuclear states with AMADEUS AMADEUS collaboration 116 scientists from 14 Countries and 34 Institutes lnf.infn.it/esperimenti/siddharta And LNF-07/24(IR) Report on lnf.infn.it web-page (Library) AntikaonMatterAtDANE:Experiments withUnravelingSpectroscopy

  4. K- + 3/4He -> p + (K-pn(n)) K- + 3/4He -> n + (K-pp(n)) Kaonic nuclei

  5. The scientific case of the so-called “deeply bound kaonic nuclear states” is hotter than ever, both in the theoretical (intensive debate) and experimental sectors. What emerges is the strong need for a complete experimental study of the scientific case, i.e. a clear and clean experiment (so without the need to make hypothesis on involved physics processes), measuring kaonic clusters both in formation and in the decay processes. AMADEUS’s main aim is to perform the first full acceptance, high precision measurement of DBKNS both in formation and in the decay processes, by implementing the KLOE detector with an inner AMADEUS-dedicated setup, containing a cryogenic target and a trigger system (and an inner tracker in a second phase), Either situations: EXISTENCE or NON-EXISTENCE of the deeply bound kaonic nuclear clusters will have strong impact in kaon-nucleon/nuclei physics!!!

  6. Planned experiments • the future experiments in Japan at J-PARC will produce kaonic nuclear states only with K--induced reactions in- flight (E15; E17) • alternative approaches followed at GSI with FOPIusing • proton-nucleus collisions at beam energies close to the • strangeness production threshold and with nucleus- • nucleus collisions • a dedicated facility – AMADEUS at DANE will study antikaon-mediated bound nuclear systems with K- induced reaction at rest

  7. Experimental programmeAMADEUS phase-1 (1) • study of the (most) fundamental antikaon deeply bound nuclear systems, the • kaonic dibaryon states: ppK- and (pnK-) • produced in a 3He gas target, in formation and decay processes • as next step, the • kaonic 3-baryon states: ppnK- and pnnK- • produced in a 4He gas target, in formation and decay processes

  8. Experimental programmeAMADEUS phase-1 (2) • Low-energy charged kaon cross sections on H, d, Helium(3 and 4), for K- momentum lower than 100 MeV/c (missing today); • The K- nuclear interactions in Helium reactions (poorly known – based on one paper from 1970 …) • Properties of L(1116) and chargedS– for example decays in channels with neutrino -> astrophysics implications (cooling of compact stars) • Resonance states as the elusive-in-nature but so important L(1405) or the S(1385)could be better understood with high statistics; their behaviour in the nuclear mediumcan be studied too. Excellent feasibility test – analyses of the KLOE data

  9. AMADEUS

  10. AMADEUS

  11. AMADEUS main activities KLOE data feasibility analyses (Oton Vazquez Doce) AMADEUS physics case and setup definition; MCarlo simulations R&D for AMADEUS setup: SiPM, TPC GEM, target Slow Controls and DAQ – with KLOE Neutron efficiency of KLOE Calorimeter - KLONE AMADEUS and the EU HadronPhysics2 project

  12. The AMADEUS trigger system • Inner tracker(eventually, a first tracking stage before the DC) • Target( A gaseous He target for a first phase of study) • Trigger(1 or 2 layers of ScFi surrounding the interaction point) target K- K+ Trigger system ScFi + SiPM readout Cilindrical layer of scintillating fibers surrounding the beam pipe to trigger K+ K- in opposite directions Readout to be done by SiPM

  13. Trigger system tests: installation at DAΦNE Kaon peak around ch 1600 (adc) ~ X 10 from mips as expected by simulation Installation of AMADEUS trigger test setup in DAΦNE

  14. AMADEUS global strategy: AMADEUS phase-1: start in 2011 (after KLOE2 step0), study di- and tri – baryon kaonic nuclei and low-energy kaon-nucleon/nuclei interactions AMADEUS phase-2: after 2012 , higher integrated luminosity, refined study of di- tri-baryon kaonic nuclei; extend to other nuclei (spectroscopy of kaonic nuclei along the periodic table…)

  15. The luminosity request for AMADEUS Phase-1 is: • 2 fb-1of integrated luminosity with He4 target in order to study the tribaryonDBKNS • 1-2 fb-1of integrated luminosity with He3 target in order to study the dibaryon DBKNS • 0.5 fb-1of integrated luminosity for low-energy kaon-nuclear dedicated measurements for an overall integrated luminosity of 3.5 - 4 fb-1 With the luminosity upgrade of DAFNE, the machine could deliver at least 500pb-1/month, which means that the overall AMADEUS Phase-1 program could becompleted in about 10 months (considering installation).

  16. AMADEUS –version 2 Tracking device: TPC-GEM or 3-4 C-GEMs Kaon trigger: Scint. fibers with SiPMs Target system: cylindrical cryogenic cell in vacuum chamber

  17. DAFNE represents a unique opportunity to study in a complete way the kaon-nucleon/nuclei physics at low energy

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