US CMS DOE/NSF Review, February 17-19, 1998
Wesley Smith, U. Wisconsin CMS Trigger Project Manager
WBS 3.1 - TriggerWBS 3.1 - Trigger
1
DOE/NSF ReviewFebruary 17, 1999
US CMS DOE/NSF Review, February 17-19, 1998
OutlineOutline• Overview of Calorimeter and Muon Triggers• Cost Drivers• Organization• Status and Technical Progress• Scope and Contingency Since Last Review• Milestones, and Schedule• Commitment and Resource Profiles• Statements of Work - FY99• Committee Concerns and Corrective Actions• Issues• Summary and Conclusions
2
US CMS DOE/NSF Review, February 17-19, 1998 3
HAC Veto
0.017 η
φη
Hit
0.087 η
0.087 φ
Max
Had
EM
Neighbor EM Tower Veto
0.017 φ
Electron: 4x4 JetRegion
ECAL
HCAL
∆η,∆φ = 0.348
TriggerTower
Jet:
Jet Et from sum of ECAL& HCAL
trigger tower Et in non-overlapping 4x4
regions (also used for Ex, E
y, E
t, E
tMiss )
Use multijet triggersJet candidates are sorted to find highest energy jets
3 x 3 sliding window centered on ECAL/HCAL trigger tower pairsTower count =72φ x 60η x 2 = 8640
Fine-Grain EM Veto
Neighbor HAC Veto
EM Neighbor FG Veto
Calorimeter TriggersCalorimeter Triggers
US CMS DOE/NSF Review, February 17-19, 1998
Calorimeter Trigger OverviewCalorimeter Trigger Overview
4
CalorimeterRegionalTrigger
ReceiverElectron Isolation
Jet/Summary
Calorimeter Electronics
Interface
Global Trigger Processor
Muon Global TriggerIso Mu MinIon Tag
Cal. Global TriggerSorting, E
tMiss , ΣE
t
MinIon Tag foreach 4φ x 4η region
Copper 40 MHz Parallel4 Highest E
t
isolated & non-isol. e/ γ4 Highest jetsE
x, E
y from each crate
Et sums
Lumi-nosityMonitor
4K 1.2 Gbaud serial links w/2 x (8 bits E/H/FCAL Energy+ fine grain structure bit)+ 5 bits error detection codeper 25 ns crossing
US CMS Trigger:U. WisconsinUS CMS HCAL:
FNAL/Maryland
CMS ECAL:Lisbon/Palaiseau
US CMS HCAL:U. Nebraska
UK CMS: Bristol
CMS:Vienna
72 φ x 60 η H/ECALTowers (.087 φ x.087η for η < 2.2 &.174-195η, η > 2.2)FCAL:2x(12 φ x 12 η)
US CMS DOE/NSF Review, February 17-19, 1998
Regional Calorimeter CrateRegional Calorimeter Crate(WBS 3.1.2)
Data from calorimeter FE on Cu links @ 1.2 Gbaud • Into 152 rear-mounted Receiver Cards (ptyp. built)
160 MHz point to point backplane (ptyp. built)
• 19 Clock&Control (ptyp. built), 152 Electron ID (ptyp. built)
19 Jet/Summary, Receiver Cards operate @ 160 MHz
Electron Identification Card(WBS 3.1.2.9)
Backplane(WBS 3.1.2.6)
Receiver Card(WBS 3.1.2.8)
VME
ROC
CEM
EI EI EI EI EI EI EI EIJSLTTC
Jet Summary Card(WBS 3.1.2.10)
5
19 X
Clock/Control(WBS 3.1.2.7)
Monitor(WBS 3.1.2.13)
DAQ Proc.(WBS 3.1.2.12)
Crate(WBS 3.1.2.5)
Power Supplies(WBS 3.1.2.4)
Test Facilities(WBS 3.1.2.3)
Preprod. ASICs(WBS 3.1.2.2)
Prototypes(WBS 3.1.2.1)
US CMS DOE/NSF Review, February 17-19, 1998 6
strips
wires
Q2Q1
Q3
+−
+ −− +− +
threshold
CSC
Comparators give 1/2−strip resol.
Hit strips of 6 layers form a vector.
************************************************
µ
43
21
12
34
Drift Tubes
Meantimers recognize tracksand form vector / quartet.
Correlator combines theminto one vector / station.
track segment
muon station 4
muon station 3
muon station 2
muonstation 1
2 x extrapolationthreshold
3 track segmentpairs arecombined to onetrack string
φ2 - φ1
Track Finder
− combines vectors,− forms a track,− assigns p t value.
Muon Chamber TriggerMuon Chamber Trigger
US CMS DOE/NSF Review, February 17-19, 1998 7
CSC Muon Trigger GeometryCSC Muon Trigger Geometry
CSC Track-finding:
• Two Types of 60 ° Sector Processors:
• 12 SP-Overlap: 0.9 > | η| > 1.2 :CSC's & Barrel DT's
• 12 SP-CSC: 1.2 > |η| > 2.4 :CSC's only
0.00
m
η = 3.0
η = 2.4
η = 1.479
η = 1 η = 0.5η = 1.1
6.955 m
2.700 m
7.430 m
1.26
8 m
3.95
4 m
6.61
m
10.8
6 m
HF/1
ME
/1/3
YE/1
ME
/3/2
ME
/4/2
ME
/2/2
ME
/2/1
ME
/3/1
ME
/4/1
ME
/1/1
MB/1/1
MB/1/2
MB/1/3
MB/1/4
HE/1
EB/1
MB/0/1
MB/0/2
MB/0/3
MB/0/4
MB/2/1
MB/2/2
MB/2/3
MB/2/4
ME
/1/2
HB/1
YE
/3
YE
/2
YB/1/1
YB/1/2
YB/1/3
YB/2/1
YB/2/2
YB/2/3
YB/0/1
YB/0/2
YB/0/3
EE
/1
CB/0
Y
Z
1.23 %
g
η = 5.31
1.711 m1.9415 m
Field offη=0.8η=1.2
η=1.6
η=2.1
CSConly
Overlapη = 0.9
US CMS DOE/NSF Review, February 17-19, 1998
CSC Trigger Layout(WBS 3.1.1)
CSC Trigger Layout(WBS 3.1.1)
8
Trigger Mother Boards in 8 Iron Disk Peripheral Crates
5 Muon Port Cards x 12
Backplane, Crate Interconnects
24 Optical Links x 12
UCLA
Florida
6 Track FinderCrates in CountingRoom (total). Sortoutput (Rice) to Global Muon Trigger (Vienna)UCLA Barrel Barrel
x 6 = 360°x 2 Ends= x 12
Rice
Rice
EMU
EMU
Trigger
Trigger
TriggerCrate:4 SR,CCC2 SP-CSC2 SP-OVR
2 x
1 µ/2 links
WBS 3.1.1.1
WBS 3.1.1.2 WBS 3.1.1.2
WBS 3.1.1.3
WBS 3.1.1.4Clock & Control
Card
Rice
60° Sector Layout (x12 Sectors)
EMUTrigger
10° 10° 10° 10° 10° 10°
20° 20° 20°
10° 10° 10° 10° 10° 10°
20° 20° 20°
10° 10° 10° 10° 10° 10°
10° 10° 10° 10° 10° 10°
10° 10° 10° 10° 10° 10°
ME1/3
10° 10°10°10° 10°10°
ME1/1
ME1/2
ME1/A
ME2/2
ME2/1
ME3/2
ME3/1
ME1 Left ME1 Right
MuonPortCard
MuonPortCard
MuonPortCard
MuonPortCard
20°Sector
20°Sector 60° Sector 60° Sector
SectorReceiver
SectorReceiver
CSCSector
Processor
OVRSector
Processor
20°Sector
ME1 Center
18µ
MuonPortCard
16µ16µ 16µ 18µ
2µ2µ2µ 3µ3µ
6µ 6µ
Barrel
Barrel Barrel
US CMS DOE/NSF Review, February 17-19, 1998
Endcap Muon Crates(Detector & Counting Room)
Endcap Muon Crates(Detector & Counting Room)
9
6 Counting Room 9U VME Track Finder Crates with custom backplanes:• Each SR-CSC sends 6 muon stubs x 34 bits, and 4 bits BXN = 208 bits
• Each SP sends to the CSC sorter 3 best muons x 22 bits = 66 bits
• Each DT-IM sends 8 muon stubs x 25 bits, and 4 bits BXN = 204 bitsSRCSC
ME 1
SRCSC
ME2,3
DTIM
SPCSC
SPOVL
208
208
204
SRCSC
ME 1
SRCSC
ME2,3
DTIM
SPCSC
SPOVL
208
208
204
CCC
CPU
Type Board SlotsCLCT 9 9ALCT 9 18MBT 5 5MBD 5 5MPC 1 1CCC 1 1
Total 30 39 ↑ 2 9U Detector Peripheral Crates/60 ° ↑
US CMS DOE/NSF Review, February 17-19, 1998
Cal.Trig. - 3.1.2 MilestonesCal.Trig. - 3.1.2 Milestones
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US CMS DOE/NSF Review, February 17-19, 1998
Muon Trig. - 3.1.1 MilestonesMuon Trig. - 3.1.1 Milestones
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US CMS DOE/NSF Review, February 17-19, 1998
Statements of Work - FY99Statements of Work - FY99
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TRIGGER - SOW99TOTAL = 496K
UCLAFloridaRiceWisconsin
US CMS DOE/NSF Review, February 17-19, 1998
CPR - WBS 1.3.1, TriggerCPR - WBS 1.3.1, Trigger
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$0
$50,000
$100,000
$150,000
$200,000
$250,000
$300,000
$350,000
$400,000
$450,000
$500,000
BCWS (Budget) $292,130 $274,303 $303,406 $323,162 $403,258 $433,754 $456,092
BCWP (Performance) $139,786 $214,491 $217,939 $240,969 $252,497 $306,026 $306,026
ACWP (Paid Actuals) $0 $0 $0 $279,101 281665 281665 $287,546
OBLIGATIONS $32,805 $65,626 $65,626 $344,726 $344,764 $344,764 $344,852
JUNE JULY AUG SEPT OCT NOV DEC
WBS 1.3.1TRIGGER
US CMS DOE/NSF Review, February 17-19, 1998
Calorimeter Trigger ProgressCalorimeter Trigger Progress
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160 MHz Prototype
Receiver Card Under Test:
• VME Interface working
• Adder ASIC's functioning
• Detailed timing under study
US CMS DOE/NSF Review, February 17-19, 1998
Cal. Trigger Dataflow TestCal. Trigger Dataflow Test
Prototype Crate with• 160 MHz Backplane • Proto. Receiver Card (rear)• Proto. Clock Card (front)• Proto. Electron ID Card (front)
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REAR FRONT
US CMS DOE/NSF Review, February 17-19, 1998
Calorimeter Trigger PlansCalorimeter Trigger Plans
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Prototype Dataflow Tests - Jun '99
• 160 MHz Backplane
• Proto. Receiver Card
• Proto. Clock Card
• Proto. Electron ID Card Serial Data Tests - Oct '99
• Serial Link Test Card ASIC Design & Prototypes - Mar '00
• Electron ID ASIC
• Phase ASIC
• Boundary Scan ASIC
• Sort ASIC Crate Test - Jun '00
• 160 MHz Backplane
• Proto. Receiver Card
• Proto. Clock Card
• Proto. Electron ID Card
• Proto. Jet Summary Card
US CMS DOE/NSF Review, February 17-19, 1998 17
UCLA LCT Proto.
Rice TMB Proto.
Muon Trigger ProgressMuon Trigger Progress Summer '98 test Beam
• Proto. UCLA 48-ch LCT Card
• Software configurable as anode (wire) or cathode (strip) LCT
• Proto. Rice Trigger MotherBoard
• Combines Wire & Strip LCTs
US CMS DOE/NSF Review, February 17-19, 1998
Muon Trigger ResultsMuon Trigger Results
Summer Test Beam• Cathode Strip LCT's
• Exact 1/2 strip ID 90% eff.• ± 1/2 strip 98% efficient
• Anode Wire LCT's• Bunch xing identification 99% efficient
• Meets requirements for space, time resolution Design Progress
• Full bit-level dataflow from front end to global trigger• Interfaces with EMU FE, Drift Tube Trackfinding,
Global Muon Trigger• Design of Sector Processor Track-Finder
• Converts Sector Receiver stubs into muons w/Pt, Quality• Incl.: Extrapolate, Quality, Assemble, Select, Assign units
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US CMS DOE/NSF Review, February 17-19, 1998
Muon Trigger PlansMuon Trigger Plans
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Muon Port Card - Rice• Construct Prototype - Sep '99
• Test with Sector Receiver - Dec '99
• Test with Trigger Motherboard - Mar '00
Sector Receiver - UCLA• Prototype Design Review - Mar '99
• Construct Prototype - Oct '99• Test with Muon Port Card - Dec '99
Sector Processor - Florida• Prototype Design Review - Mar '99
• Construct CSC Prototype - Oct '99
• Construct OVR Prototype - Dec '99
Crate Test - Jun '00• Sector Receiver Prototype - UCLA
• Sector Process. CSC & OVR Proto - Florida
• Backplane - UCLA
• Clock & Control Card - Rice
UCLA Cathode Board
US CMS DOE/NSF Review, February 17-19, 1998
Issues - Calorimeter TriggerIssues - Calorimeter Trigger 1.2 Gb Serial Cu Link from H/ECAL to Regional Trigger
• Originally fibers from detector direct to trigger• New CMS R&D effort to switch from fiber to wire to adjacent crates
• Major improvement in access, environment, power, support• Engineering load on Receiver Card project• Moved Link to Mezzanine Card on Receiver Card• Added 1 FTE EE from U.Wisc. PSL to work on this
• New WBS for this task at cost < $100K• This engineer also serves as reserve after Link done
Vendor Support• Vitesse shifting to external ASIC engineering support
• Experienced customers can still find internal support (small load)
• No Impact on ASIC production runs• As per Lehman '98: contacting other vendors (AMCC, TriQuint, Fujitsu)
Final Algorithms & Tower Geometry• Required for final designs of Boards, Backplane & ASICs• Agreement on trigger tower geometry for HCAL & ECAL• Agreement on final electron & jet algorithms• Documents written & being circulated
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US CMS DOE/NSF Review, February 17-19, 1998
Issues - Muon TriggerIssues - Muon Trigger
Peripheral Crates• Originally LCT circuitry on chambers connected to separate Port Cards
• Now all Strip & Wire LCT Boards, Mother Boards, Muon Port Cards moved to crates on the periphery of the iron disks
• Major improvement in access, environment, power, support
• Required full system redesign -- now complete
• System redesign also handles ME1/1A split strips using added Muon Port Cards (48→60)
Overlap Region• Both CSC & Drift Tube segments must be used for 0.9 < | η| < 1.2
• Agreement reached with Barrel Muon groups (Vienna & Bologna):
• 2 separate Track Finders with programmable sharp η boundary
• Data sharing between Track Finders Finders
• Requirement of separate sorter for CSC & DT muon tracks
• Cost estimate < 100K
• New Conceptual design documents are being circulated
• Design eliminates extra signal distribution & reduces crates (8→6)and sector receivers (48→24)
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US CMS DOE/NSF Review, February 17-19, 1998
Trigger Project ManagementTrigger Project Management CMS Annual Reviews
• April: TriDAS Status• Progress, draft R&D plans & expenses for next year
• November: TriDAS Internal Review• R&D Plans/Progress, Cost & Schedule, Milestones• Finalize R&D plans & expenses for next year• Internal CMS Review w/CMS and non-CMS referees (M. Campbell)
• Internal Electronics Reviews by LHC Electronics Board CMS Reps.• G. Hall (Imperial), G. Stefanini (CERN), J. Elias (FNAL) for W. Smith• Reports to CMS Management Board (last review in Fall '98)
US Reviews/Reporting• Monthly Video Conferences:
• Florida, Rice, UCLA, Wisconsin, Davis (sim)• Review Progress, milestones, simulation activities
• Integration Meetings:• Calorimeter Trigger: FNAL, Maryland, Wisconsin• Muon Trigger: Ohio, Florida, Rice, UCLA, Wisconsin, others.
• Annual Site Visits: Florida, Rice, UCLA
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US CMS DOE/NSF Review, February 17-19, 1998
Committee Concerns & Corrective Actions
Committee Concerns & Corrective Actions
From May 98 Lehman Review:• Add Cal. Trig. & CSC Trig. Crate Tests
• C&S for Cal & CSC Trig Crate tests added to CMS Project Planning
• Done before CMS Trigger TDR planned for end of 2000
• Continue work on limited loss of Muon Trigger efficiency in the overlap region.
• Considerable effort had been put into simulation and design efforts in this area. Documentation of this effort is found on the web at:
• http://www.phys.ufl.edu/~acosta/cms/wang_sim_12_98.pdf
• http://www.phys.ufl.edu/~acosta/cms/acosta_tf_cern_12_98.pdf
• Watch ASIC availability issues, as early procurement may become necessary.
• Working on plans to procure an entire ASIC run after performance verification
• Alternative vendors sought for each ASIC to avoid single vendor dependence.
• Continue to monitor closely the Level 1 trigger latency.
• Full day workshop (“Synchronization Workshop”) held at CERN on Nov. 11.Major Topic was Latency -- thoroughly reviewed -- transparencies on web:
• http://cmsdoc.cern.ch/~wsmith/Agenda1198.html
These concerns have been addressed23
US CMS DOE/NSF Review, February 17-19, 1998
Conclusions - TriggerConclusions - Trigger
Good Progress Since May 98 Lehman Review• Full conceptual design with considerable engineering• Important revisions result in an improved system
• Muon trigger move to peripheral crates• Trackfinder integration w/ Drift Tubes & Global Muon Trig.• Calorimeter trigger serial links to adjacent E/HCAL crates
• Extensive prototyping & test program• "Proof of principle" of critical items• Number of successes already
• Muon trigger test beam• Calorimeter trigger Receiver Card
• Project Management• Extensive system of reviews and monitoring in place• Detailed documentation on WWW:
• http://cmsdoc.cern.ch/ftp/afscms/TRIDAS/html/level1.html24