Catalina Curceanu

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AMADEUS As a matter of fact it is a fact of matter

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

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From kaonic atoms to kaonic nuclei with
DAFNE2  28-30 November 200531th LNF
Scientific Committee C. Curceanu and J.
Zmeskal DEAR/SIDDHARTA Collaboration
 
 
 Proposal of an international facility at
DA?NE2
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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/siddha
rta And LNF-07/24(IR) Report on lnf.infn.it
web-page (Library)
Antikaon Matter At DA?NE Experiments with
Unraveling Spectroscopy
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Kaonic nuclei


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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. AMADEUSs 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!!!
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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 FOPI
  using
• 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

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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

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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 charged S for example
  decays in channels with neutrino -gt 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 medium can be studied too.

Excellent feasibility test analyses of the
KLOE data
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AMADEUS
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AMADEUS
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AMADEUS main activities KLOE data feasibility
analyses (Oton Vazquez Doce) AMADEUS physics
case and setup definition MCarlo
simulations RD 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
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The AMADEUS trigger system

• Cilindrical layer of scintillating fibers
  surrounding the beam pipe to trigger K K- in
  opposite directions
• Readout to be done by SiPM

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Trigger system tests installation at DAFNE
Kaon peak around ch 1600 (adc) X 10
from mips as expected by simulation
Installation of AMADEUS trigger test setup in
DAFNE
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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)
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The luminosity request for AMADEUS Phase-1 is
2 fb-1 of integrated luminosity with He4 target
in order to study the tribaryon DBKNS 1-2 fb-1
of integrated luminosity with He3 target in order
to study the dibaryon DBKNS 0.5 fb-1 of
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 500 pb-1/month, which means that the
overall AMADEUS Phase-1 program could be
completed in about 10 months (considering
installation).
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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
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DAFNE represents a unique opportunity to study in
a complete way the kaon-nucleon/nuclei physics
at low energy
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