D. Di Bari Alice Offline Meeting 23/2/05 Pb-Pb central (dN/dY=6000) 50 tracks/ m 2 Colour = separation power  /K and K/p p K  RICH performance in ALICE.

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Presentation transcript:

D. Di Bari Alice Offline Meeting 23/2/05 Pb-Pb central (dN/dY=6000) 50 tracks/ m 2 Colour = separation power  /K and K/p p K  RICH performance in ALICE p/K separation of 3 5 GeV/c in Pb-Pb a 5.5TeV (dn/dY=6000) #photoel. Per  =1 → 20

D. Di Bari Alice Offline Meeting 23/2/05 Antiproton/proton 20 Hijing events Pb-Pb fully reconstructed 2 (anti)protons embedded in each module

D. Di Bari Alice Offline Meeting 23/2/05

D. Di Bari Alice Offline Meeting 23/2/05 Combined PID: TOF and RICH correlation

D. Di Bari Alice Offline Meeting 23/2/05 Determination of v2 ad high p T Eventi minimum bias Au-Au in the STAR experiment September 2004

D. Di Bari Alice Offline Meeting 23/2/05 Production of particles vs P T pTpT pQCD Hydro 2-3 GeV/c~8-10 GeV/c ? Soft Fragmentation and quenching of jets 0 Meccanism at “intermediate” p T ? SOFT & quenching Coalescence (mini-jet parton + QGP parton) Coalescence (mini-jet parton + QGP parton) Specttra, ratios, R cp What we know for sure… ??? Recent results from RHIC show the need to extend the p T range of the PID expecially for protons

Cherenkov counter with aerogel in ALICE UNAM, INFN Bari, INR (ALICE VHMPID group)

D. Di Bari Alice Offline Meeting 23/2/05 Layout of the counter Layout of the counter PM n = Momentum (GeV/c) Proton identification up to p = 8-12 GeV/c

D. Di Bari Alice Offline Meeting 23/2/05

D. Di Bari Alice Offline Meeting 23/2/05 array of 7 modules (each ~1.5 x 1.7 m 2 ) HMPID layout in ALICE