ALICE UPGRADE FOR RUN3 - IN-KWON YOO (PUSAN NAT'L UNIV.) FOR THE ALICE COLLABORATION - CERN Indico
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ALICE UPGRADE FOR RUN3 IN-KWON YOO (PUSAN NAT’L UNIV.) FOR THE ALICE COLLABORATION based on the official RRB presentation on Oct. 2015 by P.Guibellino
femto-scale interferometry? !!
pPb @ 5 TeV
2
3
HI Lum. factor 7 3
PHASE I Upgrade
• ALICE, LHCb major
HI Lum. factor 7
• ATLAS, CMS minor
3
PHASE I Upgrade
• ALICE, LHCb major
HI Lum. factor 7
• ATLAS, CMS minor
pp Lum. factor 5
3
PHASE I Upgrade
• ALICE, LHCb major
HI Lum. factor 7
• ATLAS, CMS minor
PHASE II Upgrade
pp Lum. factor 5
• ATLAS, CMS major
3
HEAVY ION/PP RUNS @ LHC
year system energy √sNN integrated
TeV luminosity
2010 Pb – Pb 2.76 ~ 0.01 nb-1
RUN1
2011 Pb – Pb 2.76 ~ 0.1 nb-1
2013 p – Pb 5.02 ~ 30 nb-1
total 1nb-1
for PbPb
RUN2
collisions
expected
RUN3/ HL RUNS: total 10 nb-1 of PbPb expected
RUN4 ALICE needs to be upgraded during LS2 (2019-2020)
4
THE LS2 ALICE UPGRADES
5
THE LS2 ALICE UPGRADES
NEW ITS (Inner Tracking System)
• improved pointing resolution
• less material budget
• higher DAQ rate
5THE LS2 ALICE UPGRADES
NEW ITS (Inner Tracking System)
• improved pointing resolution
• less material budget
• higher DAQ rate
5THE LS2 ALICE UPGRADES
NEW ITS (Inner Tracking System)
• improved pointing resolution
• less material budget
• higher DAQ rate
5THE LS2 ALICE UPGRADES
NEW ITS (Inner Tracking System) MFT (Muon Forward Tracker)
• improved pointing resolution • NEW Si tracker
• less material budget • Improved MUON pointing
• higher DAQ rate
5THE LS2 ALICE UPGRADES
NEW ITS (Inner Tracking System) MFT (Muon Forward Tracker)
• improved pointing resolution • NEW Si tracker
• less material budget • Improved MUON pointing
• higher DAQ rate
5THE LS2 ALICE UPGRADES
NEW ITS (Inner Tracking System) MFT (Muon Forward Tracker)
• improved pointing resolution • NEW Si tracker
• less material budget • Improved MUON pointing
• higher DAQ rate
5THE LS2 ALICE UPGRADES
NEW ITS (Inner Tracking System) MFT (Muon Forward Tracker)
• improved pointing resolution • NEW Si tracker
• less material budget • Improved MUON pointing
• higher DAQ rate
TPC Upgrade
• new GEM for readout
• continuous RO
• faster RO electronics
5THE LS2 ALICE UPGRADES
NEW ITS (Inner Tracking System) MFT (Muon Forward Tracker)
• improved pointing resolution • NEW Si tracker
• less material budget • Improved MUON pointing
• higher DAQ rate
TPC Upgrade
• new GEM for readout
• continuous RO
• faster RO electronics
5THE LS2 ALICE UPGRADES
NEW ITS (Inner Tracking System) MFT (Muon Forward Tracker)
• improved pointing resolution • NEW Si tracker
• less material budget • Improved MUON pointing
• higher DAQ rate
TPC Upgrade
• new GEM for readout
• continuous RO
• faster RO electronics
5THE LS2 ALICE UPGRADES
NEW ITS (Inner Tracking System) MFT (Muon Forward Tracker)
• improved pointing resolution • NEW Si tracker
• less material budget • Improved MUON pointing
• higher DAQ rate
TPC Upgrade
• new GEM for readout
• continuous RO
• faster RO electronics
Online-Offline (O2) Computing Upgrade
• ALICE Computing paradigm shift
5THE LS2 ALICE UPGRADES
NEW ITS (Inner Tracking System) MFT (Muon Forward Tracker)
• improved pointing resolution • NEW Si tracker
• less material budget • Improved MUON pointing
• higher DAQ rate
TPC Upgrade
• new GEM for readout
• continuous RO
• faster RO electronics
Online-Offline (O2) Computing Upgrade DAQ/HLT Upgrade
• ALICE Computing paradigm shift • new architecture
• online tracking & Data compression
• 50kHz Pb5 event rateTHE LS2 ALICE UPGRADES
NEW ITS (Inner Tracking System) MFT (Muon Forward Tracker)
• improved pointing resolution • NEW Si tracker
• less material budget • Improved MUON pointing
• higher DAQ rate
TPC Upgrade
• new GEM for readout
• continuous RO
• faster RO electronics
Online-Offline (O2) Computing Upgrade DAQ/HLT Upgrade
• ALICE Computing paradigm shift • new architecture
• online tracking & Data compression
• 50kHz Pb5 event rateTHE LS2 ALICE UPGRADES
NEW ITS (Inner Tracking System) MFT (Muon Forward Tracker)
• improved pointing resolution • NEW Si tracker
• less material budget • Improved MUON pointing
• higher DAQ rate
TPC Upgrade
• new GEM for readout
• continuous RO
• faster RO electronics
Online-Offline (O2) Computing Upgrade DAQ/HLT Upgrade TOF, TRD, ZDC: faster RO
• ALICE Computing paradigm shift • new architecture MUON ARM: continuous RO
• online tracking & Data compression New Trigger Detector: FIT
• 50kHz Pb5 event rate New Central Trigger ProcessorTHE LS2 ALICE UPGRADES
NEW ITS (Inner Tracking System) MFT (Muon Forward Tracker)
• improved pointing resolution • NEW Si tracker
• less material budget • Improved MUON pointing
• higher DAQ rate
TPC Upgrade
• new GEM for readout
• continuous RO
• faster RO electronics
Online-Offline (O2) Computing Upgrade DAQ/HLT Upgrade TOF, TRD, ZDC: faster RO
• ALICE Computing paradigm shift • new architecture MUON ARM: continuous RO
• online tracking & Data compression New Trigger Detector: FIT
• 50kHz Pb5 event rate New Central Trigger ProcessorNEW INNER TRACKING SYSTEM
400
Pointing resolution (µm)
ALICE
350 Current ITS, Z (Pb-Pb data, 2011)
Upgraded ITS, Z
Current ITS, rϕ (Pb-Pb data, 2011)
300
Upgraded ITS, rϕ
250
200
150
100
50
0
10-1 1 10
p (GeV/c)
T
Efficiency (%)
100
• Monolithic Active Pixel Sensor 80
(Imaging CMOS Sensor) 60 ALICE
Current ITS
Upgraded ITS
• 12.5 Gpixel w. 100kHz 40 IB: X/X0= 0.3%; OB: X/X0= 0.8%
20
• = 0.3% 0
10-1 1 10
6 p (GeV/c)
TALPIDE (ALICE PIXEL DETECTOR)
3cm electron @ 60MeV in Pohang.KR
• Detector resolution (σdet) ~ 5μm
• Fake hits (λfake) 99%
• Mass production planned to start mid 2016
7ITS MODULE & STAVE ASSEMBLY
pixel chip side
• Semi-automatic Module Assembly Machine
FPC side • Prototype is being tested (IBS)
• currently being finalized (soldering)
Interconnec(on of adjacent HICs • Delivery at CERN: Jan. 2016
• 5 additional ones: Summer 2016
• Mass chip test: Korea (Yonsei / Pusan)
• Assembly stations: Pusan, Bari, Strasbourg,
Liverpool, Wuhan, Saclay
8TPC UPGRADE WITH GEM
• World Largest TPC
• 500 M pixels
To operate at the 50 kHz rate => no ga3ng
grid => need to minimize Ion Back Flow to
keep space charge distor3ons at a tolerable
level
Replace wire-chambers with GEMs
• 100 m2 single-mask foils
• Limit Ion Back Flow into driE volume
• Maintain excellent dE/dx resolu3on
New readout electronics
Keep all other subsystems
9MUON FORWARD TRACKER
• Muon tracking before absorber
• Enhance pointing accuracy with matching before/after the absorber
MUON Upgrade MUON + MFT Upgrade
Topic Observable (10/nb delivered, (10/nb delivered,
10/nb m.b.) 10/nb m.b.)
Heavy flavour J/ψ from B RAA - pT>0, 10% @ 1 GeV
(to be improved “a la LHCb”)
J/ψ from B v2 - Not evaluated yet
µ decays from charmed hadrons - pT>1, 7% @ 1 GeV
µ decays from beauty hadrons - pT>2, 10% @ 2 GeV
Charmonia Prompt J/ψ RAA - pT>0, 10% @ 1 GeV
Prompt J/ψ v2 - Not evaluated yet
ψ’ pT>0, 30% pT>0, 10% @ 1 GeV
Dielectrons Low mass spectral func. and QGP - pT>1, 20% at 1 GeV
radiation
10MFT PROGRESS
• The same chips to ALPIDE
First HIC prototypes
pAlpide: In-lab test
& participation to development
and beam tests
Ladder Cooling Tests
112
ONLINE-OFFLINE COMPUTING (O )
Data of all interactions shipped from detector
to online farm in triggerless continuous mode
Paradigm shift
HI run 1.1 TByte/s
ONLINE
Data volume reduction by cluster finder
No event discarded
Average factor 2.2(factor 2.5 for the TPC data)
500 GByte/s
Data volume reduction by tracking
All the events go to data storage
Average factor 5.5 (factor 8 for the TPC data)
90 GByte/s
OFFLINE
Tier 0 20 GByte/s Data Storage: 1 year of compressed data
•Bandwidth: Write 90 GB/s Read 90 GB/s
Tiers 1 and Analysis Facilities •Capacity: 60 PB
Asynchronous event reconstruction with final
Calibration with a delay of few hours.
12FAST RECONSTRUCTION WITH
H/W ACCELERATION
All FLPs EPN: synchronous asynchronous
Raw data
Local Processing E.g.
Detector Matching Final calibration and Final matching, PID,
Clusterization
Reconstruction procedures 2nd matching Event extraction…
Calibration
CTF AOD
Step 0 Step 1 Step 2 Step 3 Step 4
- Acceleration of TPC cluster finder using FPGAs - Acceleration of TPC Track using GPUs
- 25 times faster than the software implementation 13- 1 GPU replaces 30 CPU cores and uses 3 for I/OS/W FRAMEWORK &
O COMPUTING FARM
2
• New S/W Framework with
FAIR Experiments
CR0
2
IT network • O computing farm
• 100k CPUs
CR1
• 5k GPUs
~10,000
optical fibers • 60 PB
2
• O computing rooms
• CR1: existing room adequate
• CR2: new room with infraALICE UPGRADE MILESTONES
EYETS: O2 EL and CV Aug-Dec 2020: ALICE re-
infrastructure in place commissioning
Nov 2019-Jul 2020: install TPC/
Nov-2017: ITS IB new ITS/MFT/FIT beampipe +
assembled close experiment
Dec-2015: SAMPA
final prototype Aug-2018: ITS OB Mar-Oct 2019: TPC upgrade in
submission assembled cleanroom
Q3-2018: O2 installed 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
à start of production finished
Nov 2015: ITS stave EDRALICE UPGRADE PHYSICS REACH (SUMMARY)
• approved only!
Approved Upgrade
Topic Observable (1/nb delivered, (10/nb delivered,
0.1/nb m.b.) 10/nb m.b.)
Heavy flavour D meson RAA pT>1, 10% pT>0, 0.3%
D from B RAA pT>3, 30% pT>2, 1%
D meson elliptic flow (for v2=0.2) pT>1, 50% pT>0, 2.5%
D from B elliptic flow (for v2=0.1) not accessible pT>2, 20%
Charm baryon/meson ratio (Λc/D) not accessible pT>2, 15%
Ds RAA pT>4, 15% pT>1, 1%
Charmonia J/ψ RAA (forward y) pT>0, 1% pT>0, 0.3%
J/ψ RAA (central y) pT>0, 5% pT>0, 0.5%
J/ψ elliptic flow (forward y, for v2 =0.1) pT>0, 15% pT>0, 5%
ψ’ pT>0, 30% pT>0, 10%
Dielectrons Temperature IMR not accessible 10% on T
Elliptic flow IMR (for v2=0.1) not accessible 10%
Low-mass vector spectral function not accessible pT>0.3, 20%
Heavy nuclei hyper(anti)nuclei, H-dibaryon 35% (4ΛH) 3.5% (4ΛH)
16Upgrades: CORE investment estimates & timelines
CORE cost
ALICE upgrade subsystem
(MSF)
1. ITS 13.6
2. TPC 11.5
3. MFT 3.3
4. Other projects (Muon, TRD, TOF, etc..) 7.0
5. O2 (online/offline) 9.4
6. Common infrastructure 5.8
Total (MSF) 50.6
R&D costs MSF 7.85
GRAND TOTAL including R&D 58.5
• Cost based on Cost Review Documents. Slight increase as compared to early estimates (was 57 M)
• Sharing within the projects fixed on the basis of responsibilities, as detailed in the UCG documents
• Strong commitment from the collaboration: the know-how and human resources necessary to carry each of
the upgrade projects exist. All projects backed by the commitment of large consortia of strong groups.
• The indications from the funding agencies in response to the group’s funding requests are encouraging, and
give us confidence that the necessary funds will be available. Many Funding Agencies have already approved
the funds, and several have already signed the MoU for the ITS. The MoU for the Electronics and Trigger has
been sent recently, the other three ae in preparation
17Upgrades: CORE investment estimates & timelines
CORE cost
ALICE upgrade subsystem
(MSF)
1. ITS 13.6
Ongoing support from FA
2. TPC 11.5 As in financial report
Thank you!!
3. MFT 3.3
4. Other projects (Muon, TRD, TOF, etc..) 7.0
5. O2 (online/offline) 9.4
6. Common infrastructure 5.8
Total (MSF) 50.6
R&D costs MSF 7.85
GRAND TOTAL including R&D 58.5
• Cost based on Cost Review Documents. Slight increase as compared to early estimates (was 57 M)
• Sharing within the projects fixed on the basis of responsibilities, as detailed in the UCG documents
• Strong commitment from the collaboration: the know-how and human resources necessary to carry each of
the upgrade projects exist. All projects backed by the commitment of large consortia of strong groups.
• The indications from the funding agencies in response to the group’s funding requests are encouraging, and
give us confidence that the necessary funds will be available. Many Funding Agencies have already approved
the funds, and several have already signed the MoU for the ITS. The MoU for the Electronics and Trigger has
been sent recently, the other three ae in preparation
17ADDITIONAL SLIDES (BACK-UP)
Upgrade of the ALICE Readout
and Trigger System
• New Forward Trigger Detector (FIT)
• New Central Trigger Processor (CTP)
• Electronics upgrade for 100 kHz Pb-Pb interaction
rate of
FIT
• Time Of Flight Detector (TOF)
• Transition Radiation Detector (TRD)
• Muon System
• TOF
• ZDC
Common TDR,
Including also the
Common Readout Unit (CRU) and the
FRONTEND for TPC and
Muons (SAMPA chip)
Endorsed by LHCC
Approved by UCG
19SAMPA
Full SAMPA simulation test bench
• MPW2: individual blocks qualified
in simulations
• MPW2: full implementation ongoing
• SAMPA packaging: contract awarded
to IMEC, design is already ongoing
• MPW2: full size/full
functionality ASIC submission
scheduled for late November 2015
20CRU
• CRU (PCI based), prototype
tested,
pre-series production to be
started
• Detector specific firmware
specifications defined
21FIT
• T0+ and V0+ Test beam campaigns 2014 & 2015
• T0+ • V0+
Being tested now
(Oct 2015) at T10:
SiPM array Sensl 4x4
Tests at T10 using
Time Readout Board
(TRB2) and Time-Over-
Threshold Add-On
front-end electronics
22CPT
• Architectural concept defined
• Trigger and timing transmission protocol defined
Fan-out board (6U VME format)
…………………
DAQ PC in UX25-CR4 …………………
(PCI40 board) CTP board
control and monitor (6U VME format)
Busy/Throttling
GBT/TTC optical links …………………
L0 trigger
Low Latency Interface over copper cable
TTC TTC TTC TTC TTC
Metallic connection
LTU boards (GBT/PON drivers) LTU + TTCex boards (TTC drivers)
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