1. ATLAS Canada Alberta Carleton McGill Montréal Simon Fraser Toronto
TRIUMF
UBC
Victoria
York
33 University/Lab.physicists Over 88 people, including Engineers, Technicians, Students
Includes 3 IPP Research Scientists
Educational Role
20 UG Summer Students
21 Graduate Students
13 Post Docs
Focus on Liquid Argon Calorimetry
4 NSERC Funded Construction Projects
Endcap Hadronic Calorimeter
Forward Hadronic Calorimeter
Front-End-Board Electronics
Endcap Signal Cryogenics Feedthroughs
Construction completed last year
End of Installation this year
Commissioning in 2006
Ongoing/Future Activities
Analysis of Beam Tests
Calorimeter Calibration
Preparation for Physics
Event Filter Algorithms/Ops
Computing - soft/hard
Beam Condition Monitors
11/16/2018

2. Why Is It Called a Calorimeter?
Liquid Argon/Metal
Charged Particle
Kinetic Energy of Particle
Converted to Ionization
Of Liquid Argon
Electrical Signal
Proportional to
Incoming Energy
Why Is It Called a Calorimeter?
Readout Electronics
11/16/2018

3. Calorimeters as Physics Tools
Forward Jet Identification

4. University of Victoria
Cryogenic Signal Feedthroughs
Over 180k signal channels in the LAr calorimeter
High density and reliability required:
1920 pins per feedthrough unit
University of Victoria
TRIUMF
11/16/2018

5. Hadronic Endcap Calorimeter
Front Wheel
2 Front and Rear
Modules
Rear Wheel
Wheel Assembly
Composed of 2 wheels per end
Front wheel:67 t 25 mm Cu plates
Back wheel:90 t 50 mm Cu plates
TRIUMF, Alberta
11/16/2018

6. HEC 2 A-wheel on the insertion stand, Aug. 2004
11/16/2018

7. Tungsten-Copper Internal Structure
Forward Calorimeter
Four Modules
Each 0.9 m Diam, 0.45 m long
Total 20 Tonnes Tungsten
Carleton, Toronto
FCAL1
FCAL3
FCAL2
Plug3
Completed Module
Tungsten-Copper Internal Structure
11/16/2018

8. LAr Forward Calorimeters
FCAL Carleton, Toronto
11/16/2018

9. Will see cold test in B180
EndCap A
HEC in Cryostat
FCAL
11/16/2018

10. EndCap C … Final Integration
Already cold tested in B180. Will see at Point 1
11/16/2018

11. Calorimeter Readout Electronics
Switched Capacitor Array
SCA Controller
Microelectronics development
and testing at ALBERTA
11/16/2018

12. Trigger, DAQ and Detector Control
Calo MuTrCh
Other detectors
40 MHz
40 MHz
75 kHz
~2 kHz
~ 200 Hz LV L1 D E T
R/O
Read-Out Drivers
FE Pipelines
Read-Out Sub-systems
Read-Out Buffers
Read-Out Links
2.5 ms
LVL2
~ 10 ms
ROIB
L2P
L2SV
L2N
RoI
RoI data = 1-2%
requests
Lvl1 acc = 75 kHz
ROD
ROD
ROD
120 GB/s
~ 300 MB/s
~2+4 GB/s
ROS
GB/s
ROB H L T D A T F L O W
RoI Builder
L2 Supervisor
L2 N/work
L2 Proc Unit EB
SFI
EBN
DFM
Lvl2 acc = ~2 kHz
Event Building N/work
Dataflow Manager
Sub-Farm Input
Event Builder
EFN
SFO
Event Filter
EFP
~ sec
~4 GB/s
EFacc = ~0.2 kHz
Event Filter N/work
Sub-Farm Output
Event Filter
Processors
Alberta, McGill
11/16/2018

13. TDAQ Setup in Combined Test Beam
LVL1
DFM
gateway
in bdg.513
SFI
Tracker
Calo
Muon det.
LVL1 calo
ROS
RPC
TGC
CSC
LVL1 mu
Tile
TRT
SCT
Pixel
LAr
MDT
monitoring
run control
pROS
data network (GbE)
MAGNI farm
in bdg. 513
SFO
remote farms
storage
CASTOR (IT)
LVL2
farm in H8
EF farm
Compared to ATLAS
~10% of DAQ
~2% of HLT
just counting PCs…
ALBERTA
11/16/2018