June 7, 2006 SLAC DOE Review 1
ILC Detector
ILCILC DetectorDetectorSilicon Detector Detector for for ILC
SLAC DOE Program Review June 7, 2006 John Jaros
June 7, 2006 SLAC DOE Review 2
Why ILC Detector R&D?Why now?
• ILC detector requirements exceed the state of the art, and the ILC environment necessitates major advances in detector technology. Advances take time.
• GDE Timeline has ILC machine TDR by 2009. Detectors are way behind. Need to catch up.
• US dangerously lags Europe in ILC detector R&D and physics studies, risking a 2nd class role in ILC experiments. Time to fix.
• EPP2010 Action Item 2: Achieving Readiness for the ILC
“The United States should launch a major program of R&D, design, industrialization, and financing studies of the ILC accelerator and detectors. “
They mean Now.
June 7, 2006 SLAC DOE Review 3
1
350
500
s GeV
L fb
jet
jet
42 MeV
E0.3
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hM
e e ZH
qqbb
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46 MeV
E0.4
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jet
48 MeV
E0.5
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hM
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jet
50 MeV
E0.6
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Mbb (GeV) Mbb (GeV)
Mbb (GeV) Mbb (GeV)
ILC Detector Requirements for Calorimetry
Higgs MassMeasurement
•Good ResolutionGood Resolution Lowers Errors/ Lowers Errors/ Boosts EffectiveBoosts Effective Luminosity Luminosity•Extends PhysicsExtends Physics Reach (e.g. Reach (e.g. HHHHHH))
Goal is 30%/ √E. State of the art was 60%/Goal is 30%/ √E. State of the art was 60%/√E at LEP√E at LEP
June 7, 2006 SLAC DOE Review 4
VXD Must Handle ILC Pair BackgroundPerformance Goal = 5 10/psin3/2 [m]>>State of the art.
• Environmental Challenge: Reading out a pixel VXD fast enough to avoid being swamped by pairs background from 3000 bunch crossings. No proof of principle exists.
Precision Measurement of Higgs BranchingFractions •Fundamental test Fundamental test of Higgs Couplings of Higgs Couplings to Fermion Mass & to Fermion Mass & Gauge Bosons Gauge Bosons•Distinguishes SM,Distinguishes SM, MSSM, 2HD,… MSSM, 2HD,…
International Linear Collider
Timeline 2005 2006 2007 2008 2009 2010
Global Design Effort Project
Baseline configuration
Reference Design
ILC R&D Program
Technical Design
Expression of Interest to Host
International Mgmt
Detector Outline Documents/ ~Costs Needed
Detector Designs/Proofs of Principle/Costs NeededDetector Designs/Proofs of Principle/Costs Needed
……pushes detector development hardpushes detector development hard
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June 7, 2006 SLAC DOE Review 6
US Lags in Detector R&DReport from the WWS R&D (Damerell) Panel
Resources: manpower by region Resources: equipment funds by region
Caveat: From a survey of existing projects only! Caveat: From a survey of existing projects only!
June 7, 2006 SLAC DOE Review 7
SLAC’s Role in ILC Detector Development • Coordinates the SiD Design Study with Fermilab, BNL, Argonne, many US Universities, and international partners from KEK, Tokyo, Annecy, and Oxford
•Designs and studies the Machine- Detector interface and IP Instrumentation
•Provides Computing-Simulation- Analysis infrastructure for the US ILC Detector Effort
•Pursues detector R&D, especially Si/W Calorimetry, Readout electronics, and Si Tracking
•Optimizes and Benchmarks SiD performance
.
Silicon Detector Design Study
Design an ILC detector, aggressive in performance, constrained in costIdentify and develop needed detector R&DEngage an international community of physicists interested in the ILC
.
SiD DESIGN STUDY COORDINATORSJ.Jaros, H.Weerts, H.Aihara & J.Karyotakis
SILICON TRACKERM.DemarteauR.Partridge
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EXECUTIVE COMMITTEEH.Aihara, J.Brau, M.Breidenbach, J.Jaros,
J.Karyotakis, H.Weerts & A.White
SOLENOIDFLUX RETR.Smith
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VERY FORWARDB. Morse
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SIMULATIONN.Graf
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MDIP.BurrowsT.Tauchi
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VERTEXINGSu Dong
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CALORIMETERSR.Frey
J.Repond
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MUONH.BandH.E.Fisk
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BENCHMARKINGT.Barklow
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COSTM.Breidenbach
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R& D COORDINATORA. White
ADVISORY COMMITTEEAll names on this chart
SLAC ParticipantsSLAC Participants
International ParticipantsInternational Participants Initiated at Victoria ALCPG 04
June 7, 2006 SLAC DOE Review 9
• Jet energy resolution goal is 30%/E. Choose a dense, highly segmented, SiW Ecal and Hcal.
• High magnetic field limits radius and cost of calorimeters and solenoid and maintains BR2. B = 5 Tesla
• Si strip tracker for excellent momentum resolution and robust performance pt/pt
2 ≤ 5 x 10-5 GeV-1
• VX Tracker at minimum possible radius with max Ω = 5 10/psin3/2 m
• Instrumented flux return for muon identification
SiD Design Rationale
June 7, 2006 SLAC DOE Review 10
SiD Starting Point• 5 layer pixel VXT • 5 layer Si tracker with
endcaps• Si/W Ecal and Hcal inside
the coil• 5T Solenoid• Instrumented flux return for
muon detection
Compact: 12m x 12m x 12 m
SiD is moving beyond the starting point, with subsystem SiD is moving beyond the starting point, with subsystem designs, full G4 subsystem descriptions, pattern recognition designs, full G4 subsystem descriptions, pattern recognition and PFA code development, and benchmarking studies.and PFA code development, and benchmarking studies.
June 7, 2006 SLAC DOE Review 11
Silicon Detector Outline DocumentCaptures Current SiD Status See http://www-sid.slac.stanford.edu/
June 7, 2006 SLAC DOE Review 12
SiD DOD Authors from Asia, Europe, US SiD DOD Authors from Asia, Europe, US
June 7, 2006 SLAC DOE Review 13
Expert Group at SLAC/BNL/Oxford crosses machine/detector boundary SiD ILC Takashi Maruyama Ray Arnold Ken Moffeit Lew Keller Mike Woods Tom Markiewicz Phil Burrows (Oxford) Andrei Seryi + Brett Parker (BNL) + others
Principal Accomplishments• Evaluate Detector backgrounds for new ILC parameters• Design IRs for 2, 14, 20 mr crossing angles • Design/test beam energy spectrometers (with U Oregon and Notre Dame)• Investigate EMI (electro-magnetic interference) and beam rf effects• Design beamlines to accommodate polarimetry, energy spectrometers
ILC Machine-Detector Interface GroupILC Machine-Detector Interface Group
SiD IR Hall LayoutSiD IR Hall Layout Crossing Angle DesignsCrossing Angle Designs Final SC Quads (BNL)Final SC Quads (BNL)
June 7, 2006 SLAC DOE Review 14
See Mike Wood’s TalkSee Mike Wood’s Talkin Breakout Sessionin Breakout Session
Mike Woods’ Talk in Mike Woods’ Talk in Breakout Session Breakout Session
ILC-ESA Beam Tests April 24 – May 8, 2006
~40 participants from 15 institutions in the UK, U.S., Germany and Japan: Birmingham, Cambridge, Daresbury, DESY, Fermilab, KEK, Lancaster, LLNL, Notre Dame, Oxford, Royal Holloway, SLAC, UC Berkeley, UC London, U. of Oregon
1. Energy spectrometer prototypes • T-474 BPM spectrometer: M. Hildreth (Notre Dame), S. Boogert (Royal Holloway and KEK) are co-PIs • T-475 Synch Stripe spect.: Eric Torrence (U. Oregon) is PI
2. Collimator wakefield studies • T-480: S. Molloy (SLAC), N. Watson (Birmingham U.) co-PIs
3. Linac BPM prototype • BPM triplet – C. Adolphsen, G. Bowden, Z. Li
4. Bunch Length diagnostics for ESA and LCLS • S. Walston (LLNL) and J. Frisch, D. McCormick, M. Ross (SLAC)
5. EMI Studies • G. Bower (SLAC) + US-Japan collaboration with Y. Sugimoto (KEK)
15
Detector Simulation/Reconstruction Group
• Supports SiD, ALCPG, and international simulation effort. Tutorials, Workshops, Snowmass Resource CD
• Provides physics simulation and data samples for physics analysis e.g. 1 ab-1 sample of all SM Processes at 500 GeV http://www.lcsim.org/datasets/ftp.html
• Provides full detector simulation in Geant4. Runtime detector description in XML, making it easy to study design variations.
• Provides Java-based reconstruction & analysis framework• Developing Tracking and Calorimeter reconstruction code
SLAC Sim/Recon Group Ron Cassel Norman Graf* Tony Johnson Jeremy McCormick
June 7, 2006 SLAC DOE Review 16
Calorimetry drives the SiD Design, and Particle Flow drives the Calorimetry
1Measure the energy of every particle, not the energy deposited in
calorimeter modules.
High transverse and longitudinal segmentation is needed to distinguish
individual particles.
June 7, 2006 SLAC DOE Review 17
Starting Detector Comparisons with PFAsStarting Detector Comparisons with PFAs
SiD SS/RPC - 5 T field SiD SS/RPC - 4 T field
3.63 GeV 89.3 GeV 63%-> 38%/sqrt(E)
3.78 GeV 89.2 GeV 54%-> 40%/sqrt(E)
-> Somewhat worse performance in smaller field
Vary B-field
June 7, 2006 SLAC DOE Review 18
SiD Detector R&D at SLACSLAC Participants Collaborators
T. Barklow W. Cooper (FNAL) M. Breidenbach M. Demarteau (FNAL) D. Freytag R. Frey (Oregon) R. Herbst V. Radeka (BNL) J. Jaros N. Sinev (Oregon) D. Su D. Strom (Oregon) T. Nelson +Annecy and UC Davis
Major Activities are closely integrated with FNAL, BNL, Oregon, Annecy
• Front-end electronics design for Si/W ECAL• Ecal mechanical design• Tracker mechanical design• Si sensor development for tracker• Pattern Recognition Code and Detector Simulation for Tracker• VXD Concept, Simulation, and Performance• Physics Analysis and Detector Benchmarking • Costing Tools
June 7, 2006 SLAC DOE Review 19
SiD ECAL overview
CAD overview
R 1.27 m
• 20 layers x 2.5 mm thick W
10 layers x 5 mm thick W
• ~ 1mm Si detector gaps
• Preserve Tungsten RM eff= 12mm
• Highly segmented Si pads 12 mm2
June 7, 2006 SLAC DOE Review 20
Conceptual design• Very aggressive mechanical and electronics integration is needed to preserve the
Moliere radius
FEA analysis is in progress
• W plates joined by ‘rods’
• Wafers ‘on’ W
• ReadOut chips on wafers
W plate ~ 200 Kg
Module ~7000 Kg
SLAC/ AnnecySLAC/ Annecy
June 7, 2006 SLAC DOE Review 21
Wafers and R/O• Single MIP tagging (S/N ~7)
• Dynamic range 0.1 – 2500 MIPs
• Bump bonded to the detector
• Low power <40 mW per wafer with power pulsing, passive cooling
• 4 deep buffer for bunch train
SLAC/BNL/Oregon/DavisSLAC/BNL/Oregon/Davis
June 7, 2006 SLAC DOE Review 22
KPiX SiD Readout Chip
2x16 Calorimetry
2 x 16 Si Strip
One cell. Dual range, time measuring, 13 bit, quad buffered
Prototype: 2x32 cells: full: 32x32
2 x 32 Prototype #2 now being tested at SLAC. #3 is on the way. Full chip in the fall.
Use for ecal and µstrips; adapt for hcal.
See Marty’s talkSee Marty’s talkin Breakoutin Breakout
June 7, 2006 SLAC DOE Review 23
SiD Integrated Tracking
• Silicon Tracker is fast (1 BX only)
• Silicon is robust(No HV trips)
• Tracking System VXD Si Main Tracker Ecal
Pixel Vertex Tracker VXT
SLAC Conceptual Designand Simulation
• 5 layer |cos| < 0.976
• Pattern Recognition ~100%
FNAL Mech DesignFNAL Mech Design
June 7, 2006 SLAC DOE Review 25
Promising VXT Technology
““Chronopix” being developed by Oregon/Yale/Sarnoff
•Store hit times in Macro Pixelduring bunch train, readout after
•Scrap Macro/micro. Miniaturize Macro instead.
•MacroPixel design complete; prototype detector design next.
Good opportunity for SLAC involvement
June 7, 2006 SLAC DOE Review 26
Si Tracker @ SLACStand Alone Barrel Tracking Sensor Module Design
Microstrip Detector DesignMicrostrip Detector Designand Integration with KPiXand Integration with KPiX
Tracking Efficiency vs Pt (GeV/c)Tracking Efficiency vs Pt (GeV/c)
See talk by Tim NelsonSee talk by Tim Nelson in Breakout Session in Breakout Session
What are the tradeoffs between detector performance and physics performance? What detector performance is really needed?
Processes under study by T. Barklow• Jet Resolution
Higgs Mass Error vs Ejet
Higgs Self Coupling Error vs Ejet
• Tracker Momentum Resolution Higgs Mass Error vs pt/pt
2
Ecm Accuracy vs pt/pt2
SUSY Mass Error vs pt/pt2
• Detector Calibration Runs Run at the Z or will radiative Z’s do?
These studies benchmark SiD performance. Eventually they will be utilized to compare and optimize SiD Design variations.
Detector Performance Requirements
June 7, 2006 SLAC DOE Review 28
What’s Next for SiD@SLAC...?
….ambitious plans!
• Ecal KPiX, New Si Sensors, Prototype, Beam Test, Mechanical design
• Main Tracker Tracker Si Sensor, Prototype Sensor Modules, Beam test
• Vertex Tracker Evaluate Performance, Mechanical Design (with FNAL), Develop Sensor
• Reconstruction Code Perfect PFA, Tracking Pat Rec
• Benchmarking/Analysis/Design Optimization Detector Performance Requirements, New Physics Analyses, Global Optimization, Subsystem Optimization.
Expanding Effort on SiDPresent program is not adequately staffed or funded to realize our ambitiousplans, meet the GDE timeline, or secure a leading role for the US community.
Initial startup of SLAC/Atlas effort presents challenges for SiD effort.
• New SiD Personnel are needed for design and optimizationMechanical engineer, mechanical technician, computer support, postdoctoral researchers, simulation physicist, visitors
• New SiD Si Lab Space is needed & tentatively identified KPiX development, Sensor development
• Additional SiD M&S is needed to support proof of principle R&D.
SLAC is a natural site to lead ILC detector development with our user community.
We have much of the needed engineering, construction facilities, computing and simulation infrastructure, and test beams, and can serve as a center for design and analysis activity.
June 7, 2006 SLAC DOE Review 30
Backup Slides
June 7, 2006 SLAC DOE Review 31
2 sint
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Recoil Mass (GeV)
Recoil Mass (GeV)
Recoil Mass (GeV)
Recoil Mass (GeV)
ILC Detector Requirement for Tracking
Higgs Tag and Recoil Mass Measurement
•Boost EffectiveBoost Effective Luminosity Luminosity• Improve TagImprove Tag
Goal: pt/pt2 ≤ 5 x 10-5 GeV-1 10X LEP, and 3X CMS10X LEP, and 3X CMS
June 7, 2006 SLAC DOE Review 32
Accounting for Costs
BR^2 Fixed, Vary R_Trkr
-600
-400
-200
0
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0.00 0.50 1.00 1.50 2.00 2.50
R_Trkr (m)
M$ R_Trkr
d$/dR
Cost by subsystem
Cost minimum vs. tracker
radiusMarty’s Excel Spreadsheet allows study of costs vs detector parameters, includes fixed costs. Need for detector optimization.
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