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RADIOACTIVE BEAMS AT SPL

RADIOACTIVE BEAMS AT SPL. OPPORTUNITY FOR NEW PHYSICS !. Juha Aysto. , CERN. Physics opportunities. Nuclear physics. Astrophysics. Fundamental symmetries. Material science. Medical applications. Technology of. RIBs. Second generation RNB facility at CERN.

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RADIOACTIVE BEAMS AT SPL

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  1. RADIOACTIVE BEAMS AT SPL OPPORTUNITY FOR NEW PHYSICS ! Juha Aysto , CERN Physics opportunities Nuclear physics Astrophysics Fundamental symmetries Material science Medical applications Technology of RIBs

  2. Second generation RNB facility at CERN J. Aysto, Mats Lindroos, H.Ravn, Piet van Duppen and the ISOLDE team CERN-PS-2000-075 (OP) CERN-EP-2000-149

  3. Protons for 2nd generation Isolde can be extracted from linac at various energies

  4. A second generation Radioactive Nuclear Beam (RNB) facility at CERN using the SPL as the proton driver Post acceleration to 10-100 MeV/u (linac / cyclotron) Intensity increase x 100 - 1000 Large-acceptance spectrometer Large multi-segmented detectors Re-cycler / storage ring Antiproton-RNB physics to be explored Muon-RNB physics to be explored Second Generation RNB Facility

  5. SPL - RNB facility at CERN ISOLDE storage ring AD

  6. Muons in physics of exotic nuclei Radioactive muonic atoms (with slow muons) --> high-precision data on nuclear charge radii & moments novel structure features far from stability parity nonconservation in Fr, Ra atoms --> high probability for nuclear capture (semileptonic) production of neutron-rich nuclei ? collective excitation modes in neutron-rich nuclei renormalization of gA in nuclear medium --> atomic cross sections !!! Nuclear astrophysics --> supernova models, neutrinos and r-process Deep inelastic scattering and capture (fast muons) ? --> quark and hadron dynamics

  7. “japanese” recipe: solid H film + m transfer combined cyclotron and ion traps merging beams other ?? Technical feasibility of m capture

  8. Combined cyclotron and ion traps Cyclotron trap at PSI 105m-/s @ 20…50 keV scale by 106 --> Nm = 1011 /s vm= 1.5 - 30 cm/tm Ion traps at ISOLDE Nion =106 /cm3 Nmatoms= Nm Nionscapt vm= 6…120 /s

  9. Intersecting storage ring Mats Lindroos et al. • Energy range • ions: 5-150 MeV/u • muons: • antiprotons: • Electron cooling on both rings • Multi turn injection • Magnet rigidity difference: Br1/Br2<10

  10. Luminosity: 107 ions, 1012 muons per second as in PRISM Fraction of muons within useful range: 10-4 dp/p = 5 10-4 Emittance = 1 micrometer Relative energy difference in c.m. = 50 eV <1013 cm-2s-1 (10-11 barn-1s-1) Luminosity muonszeroth order - no cooling • Problem • Muon cooling and intensity

  11. Anti protonic exotic ions ISOLDE, REX-2, AD and the Intersecting storage ring Multi-turn injection with stacking using electron cooling Energy range: Antiprotons: 100 MeV/c Exotic ions: 5.27 MeV/u (Lorenz beta: 0.106) Phase 1

  12. Muonic exotic ions: ISOLDE Post accelerator 100 MeV/u Neutrino factory TARGET Intersecting storage ring Energy range: Muons: 15 MeV Ions: 137 MeV/u (beta=0.48) Phase 2

  13. Idea Intense RNB Facility ( at SPL ? ) Intense muon source (n-factory ?) Intense antiproton source (AD+) For nuclear structure of exotic nuclei Fundamental symmetries Special cases (charge radii) Surprises RAMA Workshop @ CERN February 2001

  14. Nuclear structure aspects Astrophysics perspectives Semileptonic processes in nuclei Atomic phenomena Techniques and detectors Key experiments ? Physics case studies: RAMA Workhsop at ECT* Trento in May

  15. Alain Blondel, Klaus Jungmann, F. Kottman, L. Simons Mats Lindroos, Roland Garoby, + PS-team Helge Ravn, Thomas Nilsson Karl Langanke, Karsten Riisager, Jules Deutsch, Witek Nazarewicz many other experts in the field Acknowledgements

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