bonner, demello, eppley, geurts, kainz, llope, mutchler, platner, roberts, yepes AGS: up to ~11.5 GeV/c/N Au, fixed target E896 RHIC: up to 100 GeV/c/N Au + 100 GeV/c/N Au polarized proton collisions, up to 250 GeV/c/beam, and p+A STAR LHC: up to 7 TeV p + 7 TeV p collisions up to 3 TeV/nucleon Pb + 3 TeV/nucleon Pb collisions p + e collisions at √s = 1.5 TeV CMS
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RHIC: up to 100 GeV/c/N Au + 100 GeV/c/N Aupolarized proton collisions, up to 250 GeV/c/beam, and p+A
STARLHC: up to 7 TeV p + 7 TeV p collisions
up to 3 TeV/nucleon Pb + 3 TeV/nucleon Pb collisionsp + e collisions at √s = 1.5 TeV
CMS
Experimental Relativistic Heavy-Ion Physics
UrQMDAu+Au100 GeV/c/Nb = 5fm
collide big nuclei at the highest possible speedsform large systems of very hot, very dense nuclear mattertry to measure final state as completely as possible
(build detectors, put them in beam, and write tape!)
→ work back to infer conditions during the collision andthe physical processes leading to observed final states.....
VNIAu+Au100 GeV/c/Nb = 0 fm
order of magnitude jump from previously accessible √s...no two models agree on anything....
brand new field
RHIC:
0.2 0.4 0.6 0.8 1 1.2 1.4
50
100
150
200
250
early universe
LHC
RHIC
baryonic chemical potential µB [GeV]
tem
pera
ture
T
[MeV
]
SPS
AGS
SIS
atomicnuclei neutron stars
chemical freeze-out
thermal freeze-out
hadron gas
quark-gluonplasma
deconfinementchiral restoration
1
10
Strangeness |S|
Enh
ance
men
t E
-
h K0S Λ Λ
–Ξ Ξ
–Ω+Ω
–
0 1 12 2 3
Something funny is going on with the observed “strangeness”...
mass dependence of inverse slopes
0.1
0.2
0.3
0.4
0.5
0 0.25 0.5 0.75 1 1.25 1.5 1.75 2m (GeV/c2)
T (
GeV
)
NA49
NA44
WA97
WA98
are we approaching a new state of matter in the lab?!? called the QUARK-GLUON PLASMA
...so, RHIC has the QGP in every central event?!?!→ RHIC = QGP observation & spectroscopy...
The Solenoidal Tracker at RHIC (STAR)hadrons over wide, azimuthally symmetric, acceptance...
(little concensus on the unambiguous QGP signature)
for the first time, event-by-event physics!(other RHIC experiments less or not capable here → STAR leads the way in QGP spectroscopy)
STAR Level-3 Trigger
other involvementSTAR-EMCPWGs
planned det. upgradesTOFq...TOFr...
STAR Central Trigger Barrel (CTB) STAR Time-Of-Flight Patch (TOFp)
BNL-AGS Experiment 896
...analyzing large set of 1998 Au+Au data towards Λ and Ksreconstruction including direct PID...
CollaborationInstitutes in CMS US CMS serverRDMS CMS server
DocumentsIntroduction to CMS Letter of IntentTechnicalProposalCMS Outreach
General
,
,
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CERNhomepageLHCexperimentsCommittee(LHCC) SLACSpires Particle Data Group
21 January 2000. For comments or questions regarding this web pages: , CERN 2000 - European Organization for Nuclear Research CMS EXPERIMENT
CMS outreach officeCopyright
4/26/00 12:59 PMCMS INFO http://cmsinfo.cern.ch/Welcome.html
CMS at CERNanother factor of ~30 in Pb+Pb total energy above RHIC Au+Auelectrons, photons, and muons (CMS “~” Phenix, and ALICE “~” STAR)