1 Antiprotons at FAIR FLAIR SIS 100 / 300 pbar production Capture and accumulation deceleration High Energy Storage Ring for Antitprotons (HESR): 0.8–15 GeV New low-energy facility CR NESR HESR Antiproton Ion Collider

2 FAIR High brightness low energy beams – Storage rings with 300 keV (LSR) – electron cooling ε ~ 1 π mm mrad Δp/p ~ 10–4 Storage ring with internal targets for collision studies Slow and fast extraction Ion traps – HITRAP facility for HCI & pbar Several 100 times more antiprotons than now Especially interesting for strangeness physics using stopped antiprotons Operation after 2017 is the real problem

EXA08 – LEAP08, Vienna P. Kienle Production of Antideuterons in Antiproton Rings P. Kienle, Hyp..Inter.. (2008)DOI /s Proposal 1982 GSI

EXA08 – LEAP08, Vienna P. Kienle Principle of Antideuteron Breeding in a Double Storage Ring Breeding Reaction is time inversed of pp pionic fusion pp -> dπ + The total reaction cross section is large and well known: dσ/dΩ(0)= 3.2 mb with a maximum at T p = 160MeV and 8,6% pionic fusion branch Matching condition for accumulation anti-deuterons in ring 1

EXA08 – LEAP08, Vienna P. Kienle AIC Double Ring of FAIR Matching Condition: p 2 =p 4 and p 1 =p 3 ΔΩ(cm)/ΔΩ(lab)= (p 1 /p d *)²= 141 Enlargement of the cm solid angle

EXA08 – LEAP08, Vienna P. Kienle Luminosity ΔQ= 0.1, N 2 = 10 10, ß 1 = 0.90, ß 2 =0.56, γ 2 = 1.13 U 2 = m, r p = 1.54x cm, ß*~100 cm N 1 = N 2 x0.93= 0.93x10 10 L: 5.2x10 28 cm -2 s -1 (dσ/dΩ)ΔΩ cm ~ 0.42 mb Antideuteron rate: ~23 s -1 can be enlarged by optimalisation of N2, N1 and ß* by a factor ~5

EXA08 – LEAP08, Vienna P. Kienle Physics Case Anti deuteron mass and magnetic moment Anti deuteron atoms Anti deuteron isotope shift Anti deuterium hyperfine structure Matter- antimatter cross section comparison Production of multi-strangeness in nuclei Production of charm in nuclei Breeding of anti- 3 He by anti-protons and -deuterons