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ALICE
at LHC
(A Large Ion Collider Experiment)
NUPECC meeting GSI
19/1-2016
15/01/16
Jens Jørgen Gaardhøje, NBI
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The ALICE Collaboration :
37 Countries, 154 Institutes and over 1500 members
Europe :
21 countries,
89 inst
Asia:
7 countries,
24 inst
Americas:
6 countries,
16 inst.
Africa:
2 countries,
4 inst.
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Many-facetted physics program
p+p @ 0.9, 2.76, 5.02, 7, 8, 13 TeV
p+Pb @ 5.02 TeV
Pb+Pb @ 2.76 & 5.02 TeV
Physics of the Quark Gluon Plasma, high density and high-T QCD,
Chiral Symmetry Restoration, Deconfinement, Color Glass
Condensate, ….
ALICE has unique PID & multiplicity capabilities at LHC
Multiplicity, Jet physics, jet suppression, collective flow, direct photons,
quarkonia, heavy flavours, anti-nuclei, correlations, phase diagram, …
Strong complementary heavy ion program with CMS & ATLAS and
now, also LHCb.
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1 PeV
Collisions
Pb+Pb
One image worth
a thousand
words…
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First result from Pb+Pb at √sNN=5.02TeV
Data taking started
on 25/11/2015.
Submitted to PRL
on 18/12/2015
arXiv:1512.06104
dN/dη=1953 at η=0
ε > 20 GeV/fm3
>25.000 charged
particles in most
central collisions.
ALICE: arXiv:1512.06104
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ALICE Status 2015
• RUN2: Pb+Pb started 25 November 2015
• Very good pp@13TeV, pp@5Tev and PbPb runs
• Upgrade Plans (target run 3: 50kHz Pb+Pb)
– All 5 TDRs have gone through the full approval process
– The R&D is progressing very successfully
– First steps towards production, two key design reviews
passed successfully (the ITS chip and the TPC chambers)
• Analysis in full swing
– 141 papers published. 40 in 2015.
– Over 10.000 citations since 2010.
– Strong presence at the 2015 conferences. 29 talks and >50
posters at Quark Matter
– First 13 TeV paper submitted, several in preparation
– First PbPb paper submitted to PRL on 17/12-2015!
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ALICE upgrades (details)
From run3 onwards:
Pb+Pb interaction rate will be 50 KHz ( L= 6 1027 cm-2 s-1).
This requires:
• New TPC RO chamber design (GEM) instead of gating
grid
• New high resolution Si Inner Tracker.
• Continuous read out og most detectors
• Increased data compression, online pattern recognition
• Improved DAQ, Trigger detectors (FIT) etc…
• Improved calorimetry
Physics Focus will be on rare probes.
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Long
Term Schedule: ALICE will run at least until LS4
LHC schedule beyond LS1
PHASE I Upgrade
Only EYETSALICE,
(19 weeks)
Linac4upgrade
connection during Run2)
LHCb(no
major
LS2
starting in 2018 (July)
18 months + 3months Heavy
BC (BeamIon
Commissioning)
Luminosity from
ATLAS,
CMS
‚“minor“
upgrade
LS3
LHC: starting in 2023 => 30 months + 3 BC
1027 to 7 x1027 cm-2 s-1
injectors: in 2024
2015
=>
2016
13 months + 3 BC
2017
2018
2019
2020
2021
Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4
LHC
Injectors
Run
2
Run2
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oooooooooo ooooooo
LS
LS22
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Run
3
Run3
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t
2022
2023
2024
2025
2026
2027
2028
Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4
LHC
Injectors
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2029
LS
LS33
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2030
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2031
2032
2033
Run
4
Run4
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2034
2035
Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4
LHC
Injectors
LS
LS44
Run
5
Run5
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LS
LS55
Upgraded
ALICE
will run at
least
to 2029
Run6
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LHC schedule approved by CERN management and LHC experiments spokespersons and technical coordinators
Monday
December 2013
PHASE
II2Upgrade
ATLAS, CMS major upgrade
nd
15/01/16
HL-LHC, pp luminosity
from 1034 (peak) to 5 x1034 (levelled)
Jens Jørgen Gaardhøje, NBI
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Upgrade milestones
EYETS: O2 EL and CV
infrastructure in
place
Dec-2015: SAMPA
final prototype
submission
Nov-2017: ITS
IB assembled
Aug-2018: ITS
OB assembled
Q3-2018: O2 installed
Aug-Dec 2020: ALICE
re-commissioning
Nov 2019-Jul 2020: install
TPC/new ITS/MFT/FIT
beampipe + close experiment
Mar-Oct 2019: TPC upgrade in
cleanroom
Jan-Feb 2019: open experiment +
remove TPC/ITS/beampipe
19 Oct 2015: ITS pixel chip EDR - done
4 Nov 2015: TPC GEM and chamber EDR
Dec-2018: TPC chamber production
finished
 start of production
Nov 2015: ITS stave EDR
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Challenging timescale!
The future: a 100 km 100 TeV collider (FCC) ?
11 T magnet
tested at CERN
may open up for
High-Energy LHC
CERN focuses on
magnet and acc.
R&D.
High Tc
supercond.
Magnets.
AWAKE:
wake fleld
acceleration.
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Summary
Relartivistic Heavy Ion physics with ALICE etc. at LHC
has just started RUN2 at TOP ENERGY (5TeV.A)
A major upgrade program for high luminosity (x10) is
approved and needs to be completed before end of
2020.
ALICE will run until at least 2029.
Various options for high energy hadron machines are
under discussion.
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EXTRA
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