atlas at the lhc: goals for triumf 2015-2020 · atlas at the lhc: goals for triumf 2015-2020 •...
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ATLAS at the LHC: Goals for TRIUMF 2015-2020
• Tier-1 Computing Center, ATLAS Detector Upgrades: – Enabling physics at the energy frontier
• Rob McPherson – Professor at the University of Victoria and IPP Principal Research Scientist – Spokesperson of the ATLAS-Canada Collaboration 2013 November 14 1
The LHC
The ATLAS Detector
3
3 November 2013 McPherson - General Overview 4
3 November 2013 McPherson - General Overview 5
Publications
3 November 2013 McPherson - General Overview 6
• To date: 267 papers published or submitted with collision data • Anticipate ~ 100 more over coming year
And as you know … • ATLAS and CMS observed a particle consistent with the SM Higgs
– Reported on July 4th 2012 at CERN seminar – Several seminars in Canada as well – Huge amount of press, with Canadian ATLAS members appearing in
national and local TV, radio, newspapers and magazines – Cited in 2013 Nobel Prize award to theorists François Englert and Peter
W. Higgs
30 November 2012 McPherson - General Overview 7
ATLAS and Canada • Over 150 Canadian scientists work on ATLAS
– 40 Faculty, 30 Postdocs, 70 Grad Students, 25 Undergrads, 25 Compute/analysis support, 20 engineers/technicians
– About 5% of ATLAS • ATLAS Canada
– Founded 1992 : Michel Lefebvre, UVic – Spokesperson/PI : Rob McPherson UVic/IPP – Deputy: : Richard Teuscher UofT/IPP – Physics coord. : Bernd Stelzer, SFU – Computing coord : Réda Tafirout, TRIUMF
• Built and operate key ATLAS systems – Particle detectors, electronics, trigger, computing
• Host 10% of the ATLAS data at TRIUMF • Leadership in ATLAS Detector Upgrade Program
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Alberta Carleton McGill Montréal SFU Toronto TRIUMF UBC Victoria York
Canadian ATLAS Leadership
• Publications Committee Chair – Vetterli (TRIUMF/SFU)
• Authorship Committee Chair – Trigger (TRIUMF)
• Higgs Physics Group Convenor – Savard (TRIUMF/Toronto)
• Top physics group convenor – Lister (UBC)
• LAr Phase 2 detector & engineering coordinator – Krieger (Toronto)
• Trigger coordinators – Robertson (McGill/IPP),
Bernlochner (Victoria)
• ATLAS Executive Board – McPherson (UVic/IPP)
• ATLAS Computing management – Tafirout (TRIUMF)
• Compute Canada Advisory – O’Neil (SFU)
• Physics subgroup convenors – Canepa (TRIUMF), Stelzer-Chilton
(TRIUMF), Gecse (UBC), Tarrade (Carleton)
• Collaboration paper/note final approval – McPherson (UVic/IPP), Savard,
Trigger (TRIUMF), Vincter (Carleton) • Software reconstruction coordinator
– Seuster (TRIUMF) 9
Snapshot of current/recent more major roles:
McPherson - General Overview 10
ATLAS-Canada: grad students • Maintaining strong interest from
both undergrad (summer, co-op) and graduate students
• Continue PhD graduation with collision data
30 November 2012
• Huge interest in ATLAS from excellent students.
• Graduates go on to jobs throughout Canadian science and technology sectors
CURRENT STUDENTS (68 total)
PhDs Awarded (52 total, 27 with collisions)
2012/2013 Data Taking: Summary
3 November 2013 McPherson - General Overview 11
2011: 93.5% eff. 2012: 93.6% eff.
• Detector and Trigger in excellent shape: – Canadian detectors: all performing well
(LAr Calorimeters, beam and radiation monitors, TRT readout, HLT)
– Canadian systems: both online and final luminosity measurements
– Canadians, esp. TRIUMF, central to ATLAS Data Quality Assessment
• Pioneered Central DQA, LAr Calo DQA • Continuous effort to adapt to improving LHC
performance – Max peak lumi: 8 x 1033 cm-2s-1
– Pileup: max 49, max average 35.4 • ATLAS design: 25
– Trigger menus continuously evolving • Significant Canadian involvement
– Offline algorithms: pileup optimization • Canadian effort
– Grid computing and analysis • Canadian Tier-1 and Tier-2 centres
ATLAS-Canada Physics Activities • Canadians active in many aspects of ATLAS physics
– Higgs discovery channels, fermion decay modes, property measurements – SUSY searches with jets, leptons, higgs bosons
• Especially: leaders in “natural SUSY” searches (stops, higgsinos) – Exotic particle production
• Heavy vector bosons, vector-like quarks, monopoles and other heavily ionizing particles, general dark matter searches in mono-jet production
– Top-quark physics, Drell-Yan, other Standard Model processes • Hold convenerships and coordination roles through ATLAS physics groups
– Significant efforts from TRIUMF, with 5 full-time faculty, plus 4 joint appointments with Canadian universities, plus 2-3 visitors at TRIUMF, 3 postdocs, 3 CERN-based technical positions, 7 grad students at TRIUMF
• TRIUMF Tier-1 personnel provide critical analysis tool support to Canadians – Grid computing issues, data access, analysis tool support, local analysis
framework installation and support • Major success following from previous TRIUMF 5YP priorities • Non-optimal 2015-2020 funding: puts Canadian physics in jeopardy
2013 November 14 McPherson ATLAS-Canada TRIUMF IRPC 12
2013 November 14
What is Needed to Move Forward?
McPherson ATLAS-Canada TRIUMF IRPC 13
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LHC Baseline Plan • Three “long shutdowns” with ATLAS phase 0/1/2 upgrades • Currently engaged in “phase 0” installation, “phase 1”
construction and “phase 2” R&D
3 November 2013 McPherson - Upgrades Overview
2013 November 14
1) ATLAS Tier 1 computing centre • TRIUMF Tier-1 enables Canadian ATLAS physics
– Funded so far via CFI (approximately CAD $20M so far, hardware, personnel, ops)
– Hosts 10% of ATLAS data – Top performing ATLAS Tier-1 centre – Provides analysis support across Canada
• Personnel funded to 31 March 2015 by CFI Funds
– Critical: absorb 9 FTE people into TRIUMF budget. Difficult without optimal TRIUMF funding
• By ≈ 2015: run out of space – Urgently require satellite room with
electrical, cooling, network infrastructure – Cost is CAD $0.5 M
• Continued operation costs (network user fees, maintenance, power)
– ≈ CAD $1.5M over 5 years (2015-2020) not including personnel
• Computing hardware expansion (CPU, disk, tape): from CFI
McPherson ATLAS-Canada TRIUMF IRPC 15
ATLAS Upgrade Timelines 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 .. 2030
Phase 0 upgrade: Consolidation, √s=13-14 TeV, 25nsec bunch spacing, L≈1x1034 cm-2s-1 (µ≈30) ∫L ≈ 50 fb-1
• New insertable pixel b-layer (IBL)
• New Al beam pipe • New pixel services • New evaporative
cooling plant • Consolidation
(calorimeter power supplies)
• Neutron Shielding • Finish EE muons
installation • Upgrade magnet cryo
2013 November 14 McPherson ATLAS-Canada TRIUMF IRPC 16
Phase 1 upgrade: Ultimate luminosity L≈2x1034 cm-2s-1 (µ≈60) ∫L > 350 fb-1
• New Muon Small Wheel (NSW)
• High Precision Calorimeter Level-1 Trigger
• Fast Track Trigger (FTK)
• Topological Level-1 Trigger Processor
• (New forward diffractive physics detectors AFP)
Phase 2 upgrade:
L ≈ 5x1034 cm-2s-1 (µ≈150) ∫L ≈ 3000 fb-1
• All new Tracking Inner Detector
• Calorimeter Electronics Upgrades
• Muon system upgrades (big wheels)
• Level-1 track trigger • New forward
calorimeters
2013 November 14
2) Cdn ATLAS Upgrade Projects • Two areas have Canadian involvement in construction.
Project focus: maintain low lepton pT trigger thresholds in high pile-up environment, critical for Higgs boson studies – New Muon Small Wheel: TRIUMF, Carleton, McGill, Montreal, SFU,
UVic – LAr electronics: TRIUMF, UVic
• Also R&D for phase 2 upgrades – High Rate Forward Calorimetry: TRIUMF, Toronto, UVic – Inner Detector: UBC, Toronto, York, Montréal
• Timescales: – Phase 1 Infrastructure deployment/testing: now – Phase 1 Major construction starting 2015 – Phase 2 R&D : wrap-up by 2016-2017 for start of construction
• Projects depend on TRIUMF infrastructure and personnel – Electrical Engineers, Mechanical Engineers, Technicians, Designers
• Expertise and experience: critical for our success • Positions are put in jeopardy in non-optimal funding scenarios
McPherson ATLAS-Canada TRIUMF IRPC 17
Phase 2: 2021/22 (LS3) for HL-LHC • Plan:
– Have new detectors ready for installation by 2021 – Requires full systems on surface for testing before 2021
• ≈ 2016—2017: – Finalize technical designs, sign Memoranda of Understanding
• Canada: depend critically on TRIUMF infrastructure and personnel
• Until then – Vigorous R&D and prototyping program to understand engineering
issues • Currently strong support from TRIUMF, especially Engineering and
Detector groups
• Note: • European strategy confirmed HL-LHC is highest priority project
even if purely studying H(125) with 3000 fb-1. Project will go ahead.
18 3 November 2013 McPherson - Upgrades Overview
2013 November 14
Summary • TRIUMF has enabled Canada to
become a major player in the LHC and ATLAS
• And is enabling Canadians to be leaders in ATLAS physics and detector upgrades
• ATLAS-Canada looks forward to years of continued collaboration with TRIUMF McPherson ATLAS-Canada TRIUMF IRPC 19
• Extra slides
2013 November 14 McPherson ATLAS-Canada TRIUMF IRPC 20
2013 November 14
Context • ATLAS / LHC in the TRIUMF 5YP
– 2.1, 2.2, 3.2, 3.3 • ATLAS has been a key success in
– Connecting Canada to leading science – Training people in advanced science and technology – International collaboration leadership – Collaboration with, and support of, leading Universities
– 4.2.1, 4.2.5: successes in current plan – Enable Canadian leadership in key physics discoveries & measurements – Direct contribution to decision making for future of particle physics
– 5.5.5 5.8.1 – assets – Detector development facilities key for ATLAS upgrade R&D – ATLAS Tier-1 computing centre: hosts 10% of ATLAS data, enables
Canadian LHC physics – 6.1, 6.2.2, 6.3.2, : goals for upcoming plan
– Maintain and enhance ATLAS Tier 1 computing centre – Construction centre for ATLAS upgrades – ATLAS physics leadership: beyond the Standard Model
McPherson ATLAS-Canada TRIUMF IRPC 21
HQP - Former postdocs/RAs: where are they now?
30 November 2012 McPherson - General Overview 22
Postdocs and Research Associates Faculty: Particle Physics 12 Faculty: other (astro particle, engineering, ..) 3 Private/public sector (medical phys., computing/sw, analyst, engineering, …) 13 Teaching/lecturing (university, CEGEP, high school) 4 Postdoc / Research Associate (not permanent) 17 Not Known 2
Total 51
HQP - Former students: where are they now?
30 November 2012 McPherson - General Overview 23
ATLAS Canadian PhD Graduates Faculty: Particle Physics 3 Faculty: other (astro particle, CEGEP) 2 Private/public sector (medical phys., computing/sw, analyst, engineering, …) 14 Teaching/lecturing (university, CEGEP, high school) 4 Postdoc / Research Associate (not permanent) 15 Still in market (applying) and Not Known 4
Total 42
ATLAS Canadian MSc Graduates ATLAS PhD (completed or enrolled) 30 PhD in other Particle Physics project 12 PhD in other field (astrophysics, medical physics, engineering, computing) 6 Private/public sector (medical phys., computing/sw, analyst, engineering, …) 13 Teaching/lecturing (non PhD) 5 Not Known 2
Total 68
The LHC Computing Grid • One computing centre with
100’s of physicists analyzing Petabytes of data per year not possible
• Farm out data around the world using GRID
• 10 Tier 1 for raw data processing
– 1 in Canada: TRIUMF – Hosts 10% of ATLAS Data
• ≈ 70 Tier 2 for physics group access
– 4 sites in Canada: West: UVic,SFU. East: Toronto,McGill
• User physics analysis support – TRIUMF provides support for all
Canadian ATLAS physics analysis
2013 November 14 McPherson ATLAS-Canada TRIUMF IRPC 24
3 November 2013 McPherson - General Overview 25
Canadian ATLAS physics Higgs
Canadian ATLAS physics: SUSY
3 November 2013 McPherson - General Overview 26
3 November 2013 McPherson - General Overview 27
Canadian ATLAS Physics: Dark Matter
Phase 2: 2021/22 (LS3) for HL-LHC
• LHC: planned delivery: 300-350 fb-1 before LS3 • LHC: ready to run at L p = 5x1034 cm-2s-1 with luminosity leveling after LS3 • Biggest project: construction of new inner detector (extensive R&D,
prototyping and engineering ongoing) • Calorimeter readout needs substantial upgrades
– Planned in stages, starting with Phase 1 • LAr endcaps might need to be opened for FCal work and/or HEC electronics
replacement – Final decision: 2015-2016
• Muon spectrometer upgrades in big wheel region • Existing electronics/computing/TDAQ will need upgrades to face additional
8—10 years of running • ATLAS will require 2+ years of shutdown for installation • Currently in R&D phase • Major construction starts: 2016-2017, depending on the system
28 3 November 2013 McPherson - Upgrades Overview
ATLAS Phase 1 : motivation • Key upgrades are driven by the need to keep trigger
thresholds as low as possible for H(125) studies – Key modes are Hγγ and associate production with W/Z
particles (with decays to leptons) – Keep low inclusive / di-object thresholds for e,µ,τ, γ
despite high pileup • Main upgrades
– NSW: better muon trigger, improved tracking – FTK: track information at start of HLT – LAr Digital Trigger: higher granularity – TDAQ: exploit topological info at level 1
3 November 2013 McPherson - Upgrades Overview 29
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New muon small wheels (more granularity)
Trigger rate reduction studied using data
~ 1/6 in 1.3<η<2.5
• Plan to replace muon small wheels with improved trigger capability: need <1mrad angular resolution and associated trigger vector capability
3 November 2013 McPherson - Upgrades Overview
LAr Trigger Granularity
3 November 2013 McPherson - Upgrades Overview 31
2013 November 14
Projected Impact • What will likely result from this specific proposal?
– Knowledge Advantage? • Advancing our understanding of matter, mass, and the physics at the
transition where the universe’s “energy” became particles – Cdn calorimetry expertise ⇒ leadership in jets, missing energy
» Vector-boson Fusion Higgs, SUSY, top-quarks – People Advantage?
• ATLAS-Canada ~ 70 Canadian graduate students – Training in scientific methods, particle and radiation detection,
computing, grid and analysis tools is difficult to match – Most will use these skills in other disciplines and fields, increasing
Canadian science and technologies expertise – Entrepreneurial Advantage?
• History in particle detection R&D leading to applications in a wide variety of fields
• Grid computing, high performance computing centres, fast networking: driven by the LHC projects
– Scratching the surface of implications outside of particle physics McPherson ATLAS-Canada TRIUMF IRPC 32
2013 November 14
Working with Partners • Collaborate directly with CERN and many participating
international labs on the LHC – US: BNL, SLAC, LBNL, Argonne – France IN2P3/CNRS: LAPP, LAL – Germany: DESY, MPI Munich – Japan: KEK, Tokyo IHEPP – Russia: JINR, IHEP, Netherlands: NIKHEF, Italy: INFN – ATLAS alone has nearly 200 institutions in 3 dozen countries
• Canadian funding agencies – NSERC, NRC, CFI, CANARIE, BCNET
• Strong ties to Canadian Universities – Alberta, British Columbia, Carleton, McGill, Montreal, Simon Fraser,
Toronto, Victoria, York • Support Azuelos (Montréal), Gingrich (Alberta), Oakham (Carleton),
Savard (Toronto), Vetterli (Simon Fraser)
McPherson ATLAS-Canada TRIUMF IRPC 33