WA98 ALICE

All materials on our website are shared by users. If you have any questions about copyright issues, please report us to resolve them. We are always happy to assist you.
 125 views
of 24

Please download to get full document.

View again

Description
Relativistic Heavy Ion Collisions From SPS to LHC NA49 WA98 ALICE Victor Trubnikov Andrzej Soltan Institute for Nuclear Studies. PHOS (PHOton Spectrometer) is a high resolution electromagnetic calorimeter consisting of 17920 detection channels based on lead-tungstate crystals(PWO).
Share
Transcript
Relativistic Heavy Ion CollisionsFrom SPS to LHCNA49 WA98 ALICEVictor Trubnikov Andrzej Soltan Institute for Nuclear Studies PHOS (PHOton Spectrometer) is a high resolution electromagnetic calorimeter consisting of 17920 detection channels based on lead-tungstate crystals(PWO). WA98 ALICE A.Deloff1 T.Dobrowolski4H.Liu1 K.Karpio1 H.Malinowski5 M.Malek6 KRedlich7T.Siemiarczuk1 GStefanek2 L.Tykarski2O.Utyuzh1 G. Wilk1 1 – IPJ 2-A.S., Kielce 3– PW 4 – Butcher Foundation 5 – Inst. Elektrotechniki, Lublin 6 – Univ. Paryski 7 – Uniw. W rocławski H.Liu1 K.Karpio1 T.Siemiarczuk1 G.Stefanek2 L.Tykarski3
  • PUBLIKACJE electromagnetic calorimeter consisting of 17920 detection channels based on lead-tungstate crystals(PWO).
  • 1.M.M.Aggarwal,...,K.Karpio,T.Siemiarczuk et al. (128 autorów)
  • Centrality and Transverse Momentum Dependence of Collective Flow in 158 AGeV
  • Pb+Pb Collisions
  • Nucl. Phys. A762(2005)129-146 WA98
  • 2. M.M.Aggarwal,..., K.Karpio,T.Siemiarczuk et al. (130 autorów)
  • Azimuthal Anisotropy of Photon and Charged Particle Emission ii Pb+Pb Collisions
  • at 158 A GeV
  • Eur. Phys. J. C41(2005) 287-296 WA98
  • 3. D. Aleksandrov,…,A. Deloff, K.Karpio, T.Siemiarczuk, G. Wilk et al. (55 autorów)
  • A High Resolution Electromagnetic Calorimeter based on Lead-Tungstate Crystals
  • Nucl. Instrum. and Methods in Phys. Res. A550(2005)169-184 ALICE
  • 4. P.Cortese,...,A.Deloff, K.Karpio, T.Siemiarczuk, G. Wilk et al. (865 autorów)
  • ALICE Report on Computing
  • ALICE Collaboration,, ALICE TDR-12, Raport CERN, CERN/LHCC-2005-018,
  • 2005, 83strony ALICE
  • 5. P. Cortese,..., A. Deloff, K.Karpio, T.Siemiarczuk, G. Wilk et al. (865 autorów)
  • ALICE Physics Performance Report, vol. II
  • wysłane do Journal of Physics G, 1127 stron ALICE
  • 6. M.M. Aggarwal,…,H. Liu, K.Karpio, T.Siemiarczuk et al. (130 autorów)
  • Interferometry of Protons and Deuterons from 158 A GeV Pb+Pb Collisions Studied
  • with the Plastic Ball
  • praca przygotowana do druku w Eur. Phys. J. C, 16 stron WA98
  • 7. M.M. Aggarwal,…, H. Liu, K.Karpio, T.Siemiarczuk et al. (130 autorów)
  • Surface Emission of Soft π+ Mesons in Central Pb+Pb Collisions at 158 A GeV
  • Studied via Two-pion Interferometry
  • praca w przygotowaniu do druku w Eur. Phys. J. C, 15 stron WA98
  • praca doktorska:
  • Liu Han,”The Fermi-Dirac and Bose-Einstein interferometry of protons and deuterons from
  • 158 A GeV Pb+Pb collisions studied with the Plastic Ball”, obrona odbyła się 8 lipca 2005 r.
  • WA98 electromagnetic calorimeter consisting of 17920 detection channels based on lead-tungstate crystals(PWO). Collective flow of photons in 158AGeV PbPb collisions measured with LEDA spectrometer of the WA98 experiment at CERN SPS 1 Reaction plane method EVENT PLANE calculated using charged particles mesured in the Plastic Ball spectrometer - transverse energy of i-th particle, – azimuthal angle Fourier decomposition of the azimuthal angle ΔΦ V1 – direct flow V2 - elliptic flow 2 Correlation method WA98 electromagnetic calorimeter consisting of 17920 detection channels based on lead-tungstate crystals(PWO). Conclusions
  • Scaled V2 depends only on the initial energy density rather than being dependent on the particle density times path length, which would be the expectation if only partial thermalization was attained.
  • The observed increase of the elliptic flow with increasing particle density is qualitatively similar to the prediction of resent hydrodinamical model study by Teaney, Lauret and Shuryak with an equation of state which includes a transition to a QGP at a critical temperature of 165 MeV and a latent heat of 800 MeV.
  • Elliptic flow Interferometry of electromagnetic calorimeter consisting of 17920 detection channels based on lead-tungstate crystals(PWO).π+, protons and deuterons from 158 AGeV Pb+Pb collisions studied with the PlasticBall The approximate A/ and A/ scalings are observed for the overall R and longitudinal RL radius parameters, respectively, with A = 3 fm GeV1/2… The NA49 EXPERIMENT electromagnetic calorimeter consisting of 17920 detection channels based on lead-tungstate crystals(PWO). Data on pp, pPb, PbPb Helena Bialkowska Bozena Boimska Victor Trubnikov Publikacje naukowe: electromagnetic calorimeter consisting of 17920 detection channels based on lead-tungstate crystals(PWO). 1.SYSTEM SIZE AND CENTRALITY DEPENDENCE OF THE BALANCE FUNCTION IN A+A COLLISIONS AT SNN=17.2 GeV. NA49 Collaboration (C.Alt, H.Białkowska, B.Boimska, V.Trubnikov et al.(101)) Opublikowane w Phys.Rev.C71:034903,2005 2.SYSTEM-SIZE DEPENDENCE OF STRANGENESS PRODUCTION IN NUCLEUS-NUCLEUS COLLISIONS AT SNN=17.3 GeV. NA49 Collaboration (C.Alt, H.Białkowska, B.Boimska, V.Trubnikov et al.(102)) Opublikowane w Phys.Rev.Lett.94:052301,2005 3. W- AND ANTI-W+ PRODUCTION IN CENTRAL Pb+Pb COLLISIONS AT 40 AND 158 AGeV. NA49 Collaboration (C.Alt, H.Białkowska, B.Boimska et al.(101)) Opublikowane w Phys.Rev.Lett.94:192301,2005 4. INDICATIONS FOR THE ONSET OF DECONFINEMENT IN Pb+Pb COLLISIONS AT THE CERN SPS FROM NA49. NA49 Collaboration (P.Seyboth, H.Białkowska, B.Boimska et al.(99)) Opublikowane w Acta Phys.Polon.B36:565-573,2005 5. MULTIPLICITY FLUCTUATIONS IN NUCLEAR COLLISIONS AT 158 AGeV. NA49 Collaboration (M. Rybczyński, H.Białkowska, B.Boimska, V.Trubnikov et al.(102)) Opublikowane w J.Phys.Conf.Ser.5:74-85,2005 6. INDICATIONS FOR THE ONSET OF DECONFINEMENT IN NUCLEUS-NUCLEUS COLLISIONS. NA49 Collaboration (D.Flierl, H.Białkowska, B.Boimska, V.Trubnikov et al.(101)) Opublikowane w AIP Conf.Proc.756:433-435,2005 7. REVIEW OF RESULTS FROM THE NA49 COLLABORATION. NA49 Collaboration (C.Blume, H.Białkowska, B.Boimska, V.Trubnikov et al.(102)) Opublikowane w J.Phys.G31:S685-S692,2005 8. ENERGY DEPENDENCE OF STRANGENESS PRODUCTION. NA49 Collaboration (V.Friese, H.Białkowska, B.Boimska, V.Trubnikov et al.(102)) Opublikowane w J.Phys.G31:S911-S918,2005 9. EVENT-BY-EVENT FLUCTUATIONS OF PARTICLE RATIOS IN CENTRAL Pb+Pb COLLISIONS AT 20 - 158 AGeV. NA49 Collaboration (C.Roland, H.Białkowska, B.Boimska, V.Trubnikov et al.(102)) Opublikowane w J.Phys.G31:S1075-S1078,2005 10. SYSTEM SIZE DEPENDENCE OF HADRON PRODUCTION IN A+A COLLISIONS AT 40 AGeV BEAM ENERGY. NA49 Collaboration (P.Dinkelaker, H.Białkowska, B.Boimska, V.Trubnikov et al.(102)) Opublikowane w J.Phys.G31:S1131-S1136,2005 11. INCLUSIVE PRODUCTION OF CHARGED PIONS IN p+p COLLISIONS AT 158 AGeV/c BEAM MOMENTUM. NA49 Collaboration (C.Alt, H.Białkowska, B.Boimska, V.Trubnikov et al.(72)) e-print: hep-ex/0510009, zaakceptowane do publikacji w Eur.Phys.J.C 12. UPPER LIMIT OF D0 PRODUCTION IN CENTRAL Pb-Pb COLLISIONS AT 158 AGeV. NA49 Collaboration (C.Alt, H.Białkowska, B.Boimska, V.Trubnikov et al.(91)) e-print: nucl-ex/0507031, skierowane do publikacji w Phys.Rev.C 13. NA49 RESULTS ON HADRON PRODUCTION: INDICATIONS OF THE ONSET OF DECONFINEMENT? NA49 Collaboration (B. Lungwitz, H.Białkowska, B.Boimska, V.Trubnikov et al.(93)) e-print: nucl-ex/0509041, prezentowane na 35th International Symposium on Multiparticle Dynamics (ISMD05), Kromeriz, Czechy, sierpień 2005 . 14. RESULTS FROM NA49. NA49 Collaboration (C. Hohne, H.Białkowska, B.Boimska, V.Trubnikov et al.(93)) e-print: nucl-ex/0510049, prezentowane na 18th International Conference on Ultrarelativistic Nucleus-Nucleus Collisions (QM 2005), Budapeszt, Węgry, sierpień 2005. 15. HIGH PT SPECTRA OF IDENTIFIED PARTICLES PRODUCED IN Pb+Pb COLLISIONS AT 158 GeV/NUCLEON BEAM ENERGY. NA49 Collaboration (C. Alt, H.Białkowska, B.Boimska, V.Trubnikov et al.(93)) e-print: nucl-ex/0510054, prezentowane na 18th International Conference on Ultrarelativistic Nucleus-Nucleus Collisions (QM 2005), Budapeszt, Węgry, sierpień 2005. 16. ELLIPTIC FLOW OF  HYPERONS IN Pb+Pb COLLISIONS AT 158 AGeV. NA49 Collaboration (G. Stefanek, H.Białkowska, B.Boimska, V.Trubnikov et al.(93)) e-print: nucl-ex/0510067, prezentowane na 18th International Conference on Ultrarelativistic Nucleus-Nucleus Collisions (QM 2005), Budapeszt, Węgry, sierpień 2005. s-production vs system-size Pb+Pb COLLISIONS AT 20 - 158 Strange particle production
  • 158 AGeV
  • fast increase for small systems, saturation from Npart > 60 on!
  • lines to guide the eye [NA49, PRL 94, 052301 (2005)] Study of „high” P Pb+Pb COLLISIONS AT 20 - 158 T identified particles Vo’s from decay Via decay topology Reconstruction of decay vertex and invariant mass calculation Charged particles from dE/dx Solid curve – Blast Wave parametrization For comparison: results on pp and PbPb collisions Pb+Pb COLLISIONS AT 20 - 158 Invariant Cross Section as a function of Pt at fixed Xf For Pi+ and Pi- (published) Invariant Cross Section as a function of Pt at fixed Xf For Pi+ and Pi- ( not published) PHOS (PHOton Spectrometer) is a high resolution electromagnetic calorimeter consisting of 17920 detection channels based on lead-tungstate crystals(PWO) ALICE: electromagnetic calorimeter PHOS. Crystal detector unit Assembling of the first PHOS module electromagnetic calorimeter consisting of 17920 detection channels based on lead-tungstate crystals(PWO) (3584 channels) is currently under way at CERN: Tadeusz Marszał (mechanical assembling), Magda Malek (tests of electronics) Polish investment : Detector Crystals, electronics, simulations, assembling (mechanical)Financial sources : SPUB Resolution of the detector electromagnetic calorimeter consisting of 17920 detection channels based on lead-tungstate crystals(PWO) + 12C  0 + X  2 + X PS CERN (0)=8.4 MeV (0)=4.7 MeV Centrality electromagnetic calorimeter consisting of 17920 detection channels based on lead-tungstate crystals(PWO)detectors Tiles Silicon strips Beam-Beam counters Zerodegreecalorimeters Twomovable spectrometers Midrapidity spectrometer Forward Spectrometer PHOS module @ BRAHMS
  • Broad RAnge Hadron Magnetic Spectrometer
  • PHOS A possibility of using the first PHOS module in BRAHMS during RHIC Run-6 is under consideration. Boundary condition  there is no interference with the ALICE schedule WA98 electromagnetic calorimeter consisting of 17920 detection channels based on lead-tungstate crystals(PWO) Collective flow of photons in 158AGeV PbPb collisions measured with LEDA spectrometer of the WA98 experiment at CERN SPS 1 Reaction plane method EVENT PLANE calculated using charged particles mesured in the Plastic Ball spectrometer - transverse energy of i-th particle, – azimuthal angle Fourier decomposition of the azimuthal angle ΔΦ V1 – direct flow V2 - elliptic flow 2 Correlation method WA98 electromagnetic calorimeter consisting of 17920 detection channels based on lead-tungstate crystals(PWO) Elliptic flow WA98 electromagnetic calorimeter consisting of 17920 detection channels based on lead-tungstate crystals(PWO) Collective flow of photons in 158AGeV PbPb collisions measured with LEDA spectrometer of the WA98 experiment at CERN SPS 1 Reaction plane method EVENT PLANE calculated using charged particles mesured in the Plastic Ball spectrometer - transverse energy of i-th particle, – azimuthal angle Fourier decomposition of the azimuthal angle ΔΦ V1 – direct flow V2 - elliptic flow 2 Correlation method PHOS general structure electromagnetic calorimeter consisting of 17920 detection channels based on lead-tungstate crystals(PWO) Crystal detector unit PHOS module Working temperature: -25 oC
  • Modular structure
  • 5 independentmoduleseachof 3584crystal detector units:
  • PWO crystal+ APD+ preamp.
  • Strip unit of 16 detector units PHOS Cradle
  • PHOS provides unique coverage of the following physics topics: -study initial phase of the collision of heavy nuclei via direct single photons and diphotons, -jet-quenching as a probe of deconfinement, studied via high pTγ and π0, -signals of chiral-symmetry restoration. Technical data: 17920 lead-tungstate crystals(PWO) -distance to IP 4400mm -coverage in pseudorapidity -0.12;+0.12 -coverage in azimuthal angle 100o -crystal size 22x22x180 mm3 -depth in radiation length 20 -modularity 5 modules -total area 8m2 -total crystal weight 12.5 t -operating temperature -25 oC -photoreadout APD
  • Nuclear modification factor topics: The PHOS-256 calorimeter: (A) detector, cooling system, (B) closed detector with CPV, (C)crystal matrix, (D) close-up of the CPV.
    Related Search
    We Need Your Support
    Thank you for visiting our website and your interest in our free products and services. We are nonprofit website to share and download documents. To the running of this website, we need your help to support us.

    Thanks to everyone for your continued support.

    No, Thanks
    SAVE OUR EARTH

    We need your sign to support Project to invent "SMART AND CONTROLLABLE REFLECTIVE BALLOONS" to cover the Sun and Save Our Earth.

    More details...

    Sign Now!

    We are very appreciated for your Prompt Action!

    x