Facility for Antiproton and Ion Research FAIR GSI

Facility for Antiproton and Ion Research FAIR @ GSI Guenther Rosner BEACH 2006, Lancaster Univ. 1

GSI Darmstadt n -Ion y v a e otro r h c n Sy H ing R e rag to n. S o I y av He tor a r e l e r Acc Linea Present GSI facility in Darmstadt/Germany Guenther Rosner BEACH 2006, Lancaster Univ. 2

FAIR GSI today Future Facility SIS 100/300 SIS 18 UNILAC ESR 100 m Super FRS HESR Beams in the future: RESR Beams now: Z = 1 – 92 (Protons to Uranium) ≤ 2 Ge. V/nucleon some beam cooling Guenther Rosner CR NESR Intensity: primary 100 -fold secondary 10 000 -fold Species: Z = -1 to 92 (Anti-protons to Uranium) Energies: ≤ 35 - 45 Ge. V/u Precision: full beam cooling BEACH 2006, Lancaster Univ. 3

Six research areas at FAIR Nuclear Structure & Astrophysics with beams of short-lived nuclei 100 m Hadron Physics with antiproton beams Nuclear Matter Physics with 35 -45 Ge. V/u HI beams Plasma Physics with compressed ion beams & highintensity petawatt-laser Ultra-high electromagnetic fields & quantum electrodynamics with highly stripped ions and antimatter Solid state and biological applications with ion beams Guenther Rosner BEACH 2006, Lancaster Univ. 5

Accelerator chain Highly Parallel Operation: High Energy operation SIS 300 Guenther Rosner BEACH 2006, Lancaster Univ. 6

Rare isotope beams (0 -1. 5 A Ge. V in flight) § § § Superconducting FRagment Separator High-Energy Reaction Setup Multi-Storage Rings (CR, NESR, e. A) Energy-Bunched Stopped Beams 20 Tm fr SI om S 1 00 § from SIS 18 Guenther Rosner Key characteristics : - all elements, H to U - intensity > 1012 ions/sec. - high and low energies - pulsed and CW beams BEACH 2006, Lancaster Univ. 7

Heavy ion production rate Guenther Rosner BEACH 2006, Lancaster Univ. 8

Compressed baryonic matter (CBM) SPS RHIC g, p-, p - beams Proton beams LHC SIS 18 SIS 200 300 T [Me. V] 300 Guenther Rosner BEACH 2006, Lancaster Univ. 9

Phase diagram of strongly interacting matter n SPS, RHIC, LHC: q n SIS 300: q Guenther Rosner high temperature, low baryon density moderate temperature, high baryon density BEACH 2006, Lancaster Univ. 10

Mapping the QCD phase diagram SI S 1 00 /3 00 Hadron gas EOS: V. Toneev, Y. Ivanov et al. nucl-th/0309008 Critical end-point: Z. Fodor, S. Katz, hep-lat/0402006, S. Ejiri et al. , hep-lat/0312006 Guenther Rosner BEACH 2006, Lancaster Univ. 11

CBM Experiment - Objectives n In-medium modifications of hadrons q onset of chiral symmetry restoration at high ρB q measure: ρ, ω, ф e+e- and open charm (D mesons) n Strangeness in matter (strange matter? ) q enhanced strangeness production? q measure: K, Λ, Σ, Ξ, Ω n Indications for deconfinement at high ρB q anomalous charmonium suppression? q measure: J/ψ, D n Critical point q event-by-event fluctuations n Color superconductivity q precursor effects? Guenther Rosner BEACH 2006, Lancaster Univ. 12

CBM setup n Radiation hard Silicon (pixel/strip) Tracking System q n Electron detectors: RICH & TRD & ECAL: q pion suppression better 104 n Hadron identification: TOF-RPC n Measurement of photons, π, η, and muons: q n Guenther Rosner in a magnetic dipole field electromagnetic calorimeter (ECAL) High speed data acquisition and trigger system BEACH 2006, Lancaster Univ. 13

PANDA physics programme Charmonium spectroscopy Exotics: charmed hybrids & heavy glueballs Time-like form factors Medium modifications of charmed mesons Drell-Yan processes Hard exclusive processes CP-violation (D & - sector) Hypernuclei Guenther Rosner BEACH 2006, Lancaster Univ. 14

(Exotic) hadron spectroscopy Guenther Rosner BEACH 2006, Lancaster Univ. 15

Charmonium spectroscopy – a high-precision testing ground for confinement Guenther Rosner n Direct formation of charmonium in pbarp n Experimental issues e. g. q measure hc(11 P 1) width q find c‘ (21 S 0) q measure transition rates q identify states above DDbar threshold n Refine confinement potential (spin dependence? ) n Challenge for lattice QCD BEACH 2006, Lancaster Univ. 16

Search for heavy glueballs n Heavy glueballs q q q n flavour blind decay charmed final states! Probably small widths only a few charmed mesons around 3 -4 Me. V/c 2 : less mixing! Exotic heavy glueballs: no mixing! q q m(2+-) = 4140(50)(200) Me. V m(0+-) = 4740(70)(230) Me. V Morningstar & Peardon, PRD 60(1999)34509 Morningstar & Peardon, PRD 56(1997)4043 Guenther Rosner BEACH 2006, Lancaster Univ. 17

What is needed experimentally? n n Gluon-rich environment q Proton-antiproton annihilation Precision resonance scan q Cooled antiproton beam q High luminosity All quantum numbers measured q Large acceptance detector High statistics samples q Large cross sections q Several years of beamtime Guenther Rosner Crystal Barrel f 0(1500) BEACH 2006, Lancaster Univ. E 835: 240 ke. V PANDA: 20 ke. V 18

Antiproton accelerator HESR Guenther Rosner BEACH 2006, Lancaster Univ. 19

Target generator Muon counters TOF stop Solenoid EM and hadron calorimeters Dipole RICH Interaction point Drift or wire chambers Ø Tracking of charged particles Ø Identification of γ, e±, μ±, π±, K±, p, anti-p Ø High rate capability Ø Fast trigger scheme Guenther Rosner BEACH 2006, Lancaster Univ. 20

Charmonium Production in pp * for selected decay mode ** L = 2 x 1032 cm– 2 s– 1, 50% accelerator and detector efficiency, integrated luminosity = 8 pb– 1/day *** 1% B. R. for this decay mode Guenther Rosner BEACH 2006, Lancaster Univ. 21

PANDA production rates (1 -2 Final State Cross section -1 fb /y) # reconstr. events/y Common feature : Low multiplicity events, moderate particle energies For pairs : Charge symmetry condition - trigger on one, investigate the other Guenther Rosner BEACH 2006, Lancaster Univ. 22

Timelines n 2006: contract signed by participating countries n 2007/8: begin of construction n Phase I n n n q SIS 18 upgrade, CR, NESR, Super. FRS (RIB intensity factor 100 ) q NUSTAR, Plasma Physics (density factor 200 ) Phase II q SIS 100, RESR, HESR (stochastic cooling) q PANDA Phase III q SIS 300, HESR (electron cooling) q NUSTAR (RIB intensity factor 104 ), Plasma Physics (dens. fact. 2500 ) q PANDA high resolution, CBM Start of data taking (phase I, III) 2010 -15 Guenther Rosner BEACH 2006, Lancaster Univ. 23