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NUSTAR plans at FAIR

NUSTAR plans at FAIR. Reiner Krücken for the NUSTAR collaboration Physik Department E12 Technische Universität München & Maier-Leibnitz-Laboratorium für Kern- und Teilchenphysik. Long Standing Questions of Nuclear Structure Physics. What are the limits for existence of nuclei?

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NUSTAR plans at FAIR

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  1. NUSTAR plans at FAIR Reiner Krücken for the NUSTAR collaboration Physik Department E12 Technische Universität München & Maier-Leibnitz-Laboratorium für Kern- und Teilchenphysik R.Krücken

  2. Long Standing Questions of Nuclear Structure Physics • What are the limits for existence of nuclei? • Where are the proton and neutron drip lines situated? • Where does Mendeleyev’s table end? • How does the nuclear force depend on varying proton-to-neutron ratios? • What is the isospin dependence of the spin-orbit force? • How does shell structure change far away from stability? • How to explain collective phenomena from individual motion? • What are the relevant degrees of freedom and symmetries of the many-body system? • How are complex nuclei built from their basic constituents? • What is the effective nucleon-nucleon interaction? • How does it connect to QCD? • What are the nuclei relevant for astrophysical processes and what are their properties? R.Krücken

  3. Superheavy elements Neutron skins electric dipole strength New shell gaps through residual interaction Shell quenching by diffuse surface 132Sn P. Ring, TUM harmonic oscillator + spin-orbit +centrifugal diffuse surface neutron rich + spin-orbit New shell gaps through residual interaction Soft collective modes Halos Nuclear Structure at the extremes R.Krücken

  4. Lack of predictive power of mean-field models from RIA Whitepaper R.Krücken

  5. FAIR: Facility for Antiproton and Ion Research Primary Beams • 1012/s; 1.5-2 GeV/u; 238U28+ • Factor 100-1000 over present in intensity • 2(4)x1013/s 30 GeV protons • 1010/s 238U73+ up to 35 GeV/u • up to 90 GeV protons SIS 100/300 SIS UNILAC FRS Secondary Beams ESR • Broad range of radioactive beams up to 1.5 - 2 GeV/u; up to factor 10 000 in • intensity over present • Antiprotons 3 - 30 GeV HESR Super FRS Storage and Cooler Rings CR NESR FLAIR RESR • Radioactive beams • e- - A and Antiproton-A collider • 1011 stored and cooled 0.8 - 14.5 GeV antiprotons R.Krücken

  6. SIS UNILAC FRS ESR HESR Super FRS CR NESR RESR NUSTAR facility(NUclear-STructure, -Astrophysics, and -Reactions) NUSTAR collaboration (ca. 450 scientists) chair / deputy: W.B. Gelletly / R. Krücken R.Krücken

  7. SUPERconducting FRagment Separator R.Krücken

  8. Super-FRS – Low Energy Branch R.Krücken

  9. Low Energy Branch R.Krücken

  10. Technology • highly segmented Ge detectors  • fast digital electronics  • pulse shape analysis and tracking  Features: • determination of each interaction point, full tracking • position resolution < 5mm • angular resolution < 1º • FWHM (1 MeV, b=0.5) < 5keV > 40keV • efficiency (Mg=1,30) 50% / 27%20% / 5% • data rate (Mg=1,30) 3 / 0.3 MHz <1/0.05 MHz today The AGATA project (Advanced GAmma-ray Tracking Array) 4p-array based on 180 36-fold segmented Ge detectors AGATA will give major improvements compared to current Ge detector arrays in detection efficiency, angular resolution and rate capabilities R.Krücken

  11. Decay spectroscopy (DESPEC) Spokesperson: B. Rubio • Decay properties of nuclei along the r-process • b-decay half-lives, b-delayed neutron emission • Test of the stability of shell closures and search for shell-quenching • Decay-spectroscopy of isomeric states • Measurement of nuclear moments and lifetimes using gamma-ray spectroscopy following b-decay or isomeric decays R.Krücken

  12. High Energy Branch R.Krücken

  13. High Energy BranchReactions with Relativistic Radioactive Beams (R3B) Spokesperson: T. Aumann • total absorption cross section • knock-out reactions • quasi-free scattering • electromagnetic excitations • charge-exchange reactions • fission and spalation • projectile fragmentation Magnet partly financed through EU construction proposal R.Krücken

  14. Ring Branch R.Krücken

  15. Mass measurements in the storage ring (ILIMA) R.Krücken

  16. Schottky Frequency Spectrum Yu.A. Litvinov et al. R.Krücken

  17. Reach of ILIMA mass measurements Spokesperson: Y. Novikov R.Krücken

  18. Exotic nuclei studied in light-ion reactions at the NESR storage ring (EXL) Spokesperson: M. Chartier Reactions at low momentum transfer: • Elastic Proton-Scattering • Quasi-free scattering • Transfer Reactions • Charge-exchange reactions • etc. R.Krücken

  19. Electron-Ion scattering in a Storage Ring (eA collider) (ELISe) Spokesperson: H. Simon 132Sn(e,e) 0.15 fm 5 % • charge densities from elastic electron scattering • collective modes via inelastic electron scattering • single-particle structure from (e,e’N) reactions Simulation for 1 week point-like probe + clean interaction  precision studies in exotic nuclei R.Krücken

  20. p 132Sn A A-1 Acceptance limit of NESR Antiproton Ion Collider (AIC ) Spokesperson: R. Krücken Project Manager: P. Kienle • annihilation of single nucleon in quasi-free process • detection of A-1 products via Schottky Method or particle detectors • measure • total absorption cross-section • absorption on neutrons and protons separately P. Kienle, Nucl. Instr. Meth. B 214 (2004) 193 R.Krücken

  21. Radii and cross sections Determine proton and neutron radii independently in the same experiment AIC goal: Drnp on the order of <10% H. Lenske, P. Kienle, nucl-th/0502065 R.Krücken

  22. Summary and Outlook • The FAIR facility is the central future project for the European Nuclear and Hadron Physics Communities • The NUSTAR Facility with the Super-FRS covers a wide range of topics concerning the investigation of exotic nuclei in the areas of:Nuclear Structure, Nuclear Astrophysics, Nuclear Reactions • NUSTAR will address fundamental questions concerning: • the Structure und Dynamics of the many-body system atomic nucleus • the Nature of the effective nucleon-nucleon interaction • relevant components, isospin dependence, correlations • Nuclear Astrophysics and the Origin of the Elements • The Super-FRS is part of the first stage of FAIR construction • There will be a continuous transition from the current FRS program to the future activities at FAIR R.Krücken

  23. 11 NUSTAR Technical Proposals >450 people NUclear-STructure, -Astrophysics, and -Reactions Collaboration (includes ongoing GSI program at FRS, ESR, SHIP, and a strong theory community) 1.) Low Energy Branch (LEB) coord.: C.Scheidenberger GSI High-resolution In-Flight Spectroscopy (HISPEC) Zs. Podolyak Surrey Decay Spectroscopy with Implanted Ion Beams (DESPEC) B. Rubio Valencia Precision Measurements of very short-lived Nuclei using an Advanced Trapping System for highly-charged Ions (MATS) K.Blaum Uni. Mainz LASER Spectroscopy for the Study of Nuclear Properties (LASPEC) P. Campbell Manchester Neutron Capture Measurements (NCAP) M.Heil FZ Karlsruhe Antiprotonic Radioactive Nuclides (Exo+pbar) M. Wada RIKEN 2.) High Energy Branch (R3B) A Universal Setup for Kinematical Complete Measurements of Reactions with Relativistic Radioactive Beams (R3B) T. Aumann GSI 3.) Ring Branch (STORIB) Study of Isomeric Beams, Lifetimes and Masses (ILIMA) Y. Novikov St. Petersburg Exotic Nuclei Studied in Light-Ion Induced Reactions at the NESR Storage Ring (EXL) M. Chartier Liverpool Electron-Ion Scattering in a Storage Ring (e-A Collider) (ELISe) H. Simon GSI Antiproton-Ion Collider: A Tool for the Measurement of Neutron and Proton rms radii of Stable and Radioactive Nuclei (AIC) R. Krücken TU Munich R.Krücken

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