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CBM@SIS100 Workshop, Dubna, May 19-22, 2009

Proposal for experimental search for the nuclear analog of the Prandtl-Glauert sigularity effect with CBM and MPD Yuri Murin, JINR. A Quest for Collectivity !. CBM@SIS100 Workshop, Dubna, May 19-22, 2009. http://www.ice.csic.es/en/graphics/phase.jpg.

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CBM@SIS100 Workshop, Dubna, May 19-22, 2009

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  1. Proposal for experimental search for the nuclear analog of the Prandtl-Glauert sigularity effect with CBM and MPD Yuri Murin, JINR A Quest for Collectivity ! CBM@SIS100 Workshop, Dubna, May 19-22, 2009

  2. http://www.ice.csic.es/en/graphics/phase.jpg The QCD Phase Diagram: Trajectories of Collision Remnants and their Destiny Hadron Gas – the Forgotton Pase State

  3. http://www.ice.csic.es/en/graphics/phase.jpg The QCD Phase Diagram: Trajectories of Collision Remnants and their Destiny Transition of fireball to GQP Multifragmentation of spectator Hadron Gas – the Forgotton Pase State

  4. Shock wave generation in high energy pA-collisions: A.E.Glassgold, Warren Heckrotte, and Kenneth M.Watson. Collective Excitations of Nuclear Matter. Annals of Physics, 6, 1- 36 (1959) CBM@SIS100 Workshop, Dubna, May 19-22, 2009

  5. Fireball and Spectator Nucleus sound different [H. Petersen and M. Bleicher, PoS CPOD2006:025,2006] • extract the sound velocity cs2 from the width of the p rapidity spectra • Landau’s hydrodynamical model vs classical estimation : with → softest point of EOS (minimum of sound velocity) at 30A GeV with minimum Cs=0.52 ?!!!! Glassgold et al : K=187 – 302 MeV→ Cs=0.14 –0.19 ?!!!! CBM@SIS100 Workshop, Dubna, May 19-22, 2009

  6. Shock wave generation in high energy pA-collisions: A.E.Glassgold, Warren Heckrotte, and Kenneth M.Watson. Collective Excitations of Nuclear Matter. Annals of Physics, 6, 1- 36 (1959) CBM@SIS100 Workshop, Dubna, May 19-22, 2009

  7. Negative results on experimental search for shock wave in high energy pA-collisions: comments on Why? A 100 MeV proton is inappropriate observable deep in the background of re-scattered cascade and pre-equilibrium emitted protons • Experiment focus was on the intermediate side-peaking mass fragments which are in fact not to appear as result of compression of nuclear matter • Importance of strict centrality tagging for small system was ignored CBM@SIS100 Workshop, Dubna, May 19-22, 2009

  8. Solution: Focus on Rarefaction Wave! In real life a shock wave is accompanied by a rarefactionwave leading to effect known in aerodynamics as Prandtl-Glauert singularity. Primordial alphas might be a sensitive probe of the nuclear Prandtl-Glauert Singularity effect and thus point to the shock wave. O CBM@SIS100 Workshop, Dubna, May 19-22, 2009

  9. Approach towards the organization the study at SIS100 Reaction in need to study …. p + Au ---> protons+primordial alphas + x Primordial alphas are easy to identify when they move fast Au+H2 ---> protons + primordial alphas…+ x CBM@SIS100 Workshop, Dubna, May 19-22, 2009

  10. Mach angle in iversed kinematics: estimates for 100 MeV protons CBM@SIS100 Workshop, Dubna, May 19-22, 2009

  11. Experimental layout at SIS100 Basic Features: Inversed kinematics Au +H2 Usage of The CBM basic subsystems Building: Silicon Zero Angle Detector For primordial alphas tagging CBM@SIS100 Workshop, Dubna, May 19-22, 2009

  12. Separation of alphas from the beam with the CBM magnet: Separation of alphas from the beam with the CBM magnet: Condition of simulation: Geometry: Muon Magnet + 30 silicon planes: 0.3mm 0.004mm 15 meters Event generator: LAQGSM Collision: Au-p Sqrt(S)=5 GeV/u Transport: Geant4 Simulations by E.Litvinenko, based on LAQGSM event generatorof K.K.Gudima et al. CBM@SIS100 Workshop, Dubna, May 19-22, 2009

  13. NMP@SIS100 Workshop, Darmstadt, April 27, 2009

  14. CBM@SIS100 Workshop, Dubna, May 19-22, 2009

  15. Separation of alphas from the beam with the CBM magnet: Tagging Efficiency around 50% CBM@SIS100 Workshop, Dubna, May 19-22, 2009

  16. Study of Silicon SEU-hazardous recoils at CELSIUS Basic Features: Inversed kinematics Usage of Existing equipment CELSIUS, CJT, CHICSi-FWD Building: Small Angle Detector Zero Degree Detector with integrated read-out system Nucl. Inst. and Methods in Physics Research, A 578, p.385-398, 2007 NUFRA2007, Kemer, Turkey, Sep 24 - Oct 1

  17. SAD ASSEMBLY PROCEDURES : Experimental situation : Strangeness enhancement ? NUFRA2007, Kemer, Turkey, Sep 24- Oct 1

  18. Charge resolution of SAD NUFRA2007, Kemer, Turkey, Sep 24- Oct 1

  19. MPD as dreamed of today

  20. MAD Simulations of Oleg Kozlov

  21. Summary and conclusions: • Arguments are put forward for revival of interest to experimental search for Mach shocks in assymetric nuclei as a quest for collective effects in reactions • Inverse kinematic scheme of experiment is suggested • Proposal is put forward to study deep sub-barrier alpha particle production in multifragmentation of heavy nuclei induced by high energy proton with regard to the idea of the nuclear Prandtl-Glauert singularity effect as a genetic tagger for the Mach shock • CBM and MPD (even if not yet fully commissioned) could be the very setups for the experiment provided equipped with small angle alpha particle silicon tagger Thank You For Your Attention!. CBM@SIS100 Workshop, Dubna, May 19-22, 2009

  22. Future Experiments 30A GeV

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