Relativistic Heavy Ion Collisions From SPS to LHC NA49 WA98 ALICE Victor Trubnikov Andrzej Soltan...
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Transcript of Relativistic Heavy Ion Collisions From SPS to LHC NA49 WA98 ALICE Victor Trubnikov Andrzej Soltan...
Relativistic Heavy Ion Collisions
From SPS to LHC
NA49 WA98 ALICE
Victor Trubnikov
Andrzej Soltan Institute for Nuclear Studies
WA98 ALICEH.Liu1
K.Karpio1
T.Siemiarczuk1
G.Stefanek2
L.Tykarski3
A.Deloff1 T.Dobrowolski4 H.Liu1 K.Karpio1
H.Malinowski5 M.Malek6 KRedlich7 T.Siemiarczuk1
GStefanek2 L.Tykarski2 O.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
•
• PUBLIKACJE
• 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, 83 strony 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
Collective flow of photons in 158AGeV PbPb collisions measured with LEDA spectrometer of the WA98 experiment at CERN SPS
1 Reaction plane methodEVENT 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
iT i
)2cos(2)cos(211
21
VVd
dN
NEP
11
212
//
/)(
ddNddN
ddNdC )2cos(2)cos(21 2
22
1 VVC
21
iiTN
ii
iT
N
ii
iT
EP
E
E
1
11
cos
sintan
WA98
Elliptic flow
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.
Interferometry of 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… 22,
22
21,
212
1ttt pmpmm
m tm
t
tLm
tcmr
)(
t
tLm
tcmr
)(
The NA49 EXPERIMENT
Data on pp, pPb, PbPb
Helena Bialkowska
Bozena Boimska
Victor Trubnikov
Publikacje naukowe:
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• 158 AGeV
• fast increase for small systems, saturation from Npart > 60 on!
[NA49, PRL 94, 052301 (2005)]lines to guide the eye
Strange particle production
Study of „high” PT 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
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)
ALICE: electromagnetic calorimeter PHOS.
PHOS (PHOton Spectrometer) is a high resolution electromagnetic calorimeter consisting of 17920 detection channels based on lead-tungstate crystals(PWO)
Crystal detector unit
Assembling of the first PHOS module
(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
(0)=4.7 MeV (0)=8.4 MeV
+ 12C 0 + X 2 + X
PS CERN
Resolution of the detector
PHOS module @ BRAHMS
– Centrality detectors• Tiles• Silicon strips• Beam-Beam counters • Zero degreecalorimeters
– Two movable spectrometers• Midrapidity spectrometer• Forward Spectrometer
• 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
Collective flow of photons in 158AGeV PbPb collisions measured with LEDA spectrometer of the WA98 experiment at CERN SPS
1 Reaction plane methodEVENT 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
iT
i
)2cos(2)cos(211
21
VVd
dN
NEP
11
212
//
/)(
ddNddN
ddNdC )2cos(2)cos(21 2
22
1 VVC
21
iiTN
ii
iT
N
ii
iT
EP
E
E
1
11
cos
sintan
WA98
Elliptic flow
WA98Collective 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
iT i
)2cos(2)cos(211
21
VVd
dN
NEP
11
212
//
/)(
ddNddN
ddNdC )2cos(2)cos(21 2
22
1 VVC21
iiTN
ii
iT
N
ii
iT
EP
E
E
1
11
cos
sintan
PHOS general structure
Modular structure 5 independent modules each of 3584 crystal detector units:PWO crystal+ APD+ preamp.
PHOS moduleWorking temperature: -25 oC
PHOS Cradle
Crystal detector unit
Strip unit of 16 detector units
• 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 pT γ 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
The PHOS-256 calorimeter: (A) detector, cooling system, (B) closed detector with CPV, (C)crystal matrix, (D) close-up of the CPV.