The CBM Experiment Radiation hard Silicon (pixel/strip) Tracking System in a magnetic dipole field Electron detectors: RICH & TRD & ECAL: pion suppression better 10 4 Hadron identification: TOF-RPC Measurement of photons, π 0 , η, and muons: electromagn. Cost Review Meeting May 31, 2005 Peter Senger, GSI
Cost Review Meeting May 31, 2005. Peter Senger, GSI. The CBM Experiment. Radiation hard Silicon (pixel/strip) Tracking System in a magnetic dipole field Electron detectors: RICH & TRD & ECAL : pion suppression better 10 4 Hadron identification: TOF-RPC - PowerPoint PPT Presentation
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The CBM Experiment
Radiation hard Silicon (pixel/strip) Tracking System in a magnetic dipole field
Front End Electronics for ECAL: 16800 channels ( 50 € per channel)
840
Front End Electronics for PreShower: 18000 channels ( 30 € per channel)
540
spare parts (1%) 168
Safety
Installation & alignment (provided by Russia) 20 man-years
Transport 65
hired manpower 2 man-years
R&D 200
infrastructure, cables, crates 400
maintenance and operation
Sum 9176
Parameter Quantity Dimension Weight of yoke 37 ton Coil windings 270 Gap maximal 845 mm Gap minimal 368 mm Ampere turns 600000 Field length 1200 mm Maximum field 1.7 T Time to cool down 48 hours Time to ramp-up field 45 minutes Thermal stream to Helium vessel 6 W Thermal stream to Nitrogen screen 30 W
"Alligator"
Superconducting Dipole Magnet
Iron yoke: weight 67 tons (max. 10 tons per segmentCoil: • two half-circles (radius = 0,5 m) connected by a 12 cm long straight section.• 2 pancakes, 9 layers, 15 turns. Cross section of the turns 4,5 x 7 mm2
Superconducting dipole magnet
Item cost (k€)
material superconducting coils 400
material iron (yoke and pole shoe) 180
material cryostat 15
material mechanics, support 25
engineering design coils 15
engineering design yoke and pole shoe 8
engineering design cryostat 25
engineering design mechanics, support 20
construction coils 40
construction yoke and pole shoe 350
construction cryostat 330
construction mechanics, support 45
prototyping and tests 150
power supply 35
commissioning 100
transport 25
installation 30
infrastructure, cables, cooling, 75
maintenance and operation 25
Sum 1893
Totel sum 2245
L1 Select
Special
hardware
High
bandwidth
Self-triggered FEE – Data Push DAQ
Detector
Cave
Shack
FEE
DAQ
Archive
fclock
L2 Select
Self-triggered front-end
Autonomous hit detection
No dedicated trigger connectivity
All detectors can contribute to L1
Large buffer depth available
System is throughput-limited
and not latency-limitedModular design:
Few multi-purpose rather
many special-purpose
modules
archive rate few GByte/s
DAQthe costs of the items include material, design, construction
A reliable bottom-up components based cost estimate can only beprovided after the major architectural and technology choices are done.
Currently the best approach is to scale a similar experiment..BTeV used to be the most similar, with a L1 displaced vertex trigger.The BTeV TDR, which was reviewed and approved, states
FEE data rate: 500 GB/secL1/2/3 trigger uses ~1000 FPGA and 1000 software processorsready-date: October 2009 for 50% capacity, August 2010 for 100%investment cost: 10 M€ (or 12 M$) for DAQ + trigger (without contingency)
CBM has a factor 2 higher FEE data rate (~ 1 TB/sec)CBM has 5 years more time about a factor 5 gain from Moore's law
CBM DAQ and event selection: 5 M€
Infrastructurethe cost of the items include material, design, construction
item cost (k€)
railsystems for detectors 500
vacuum system (MAPS inside) 400
target (solid and gaseous) 300
power connections, cables 300
gas connections 100
beam dump 1800 t 1000
beam monitors, forward calorimeter 1200
air condition, cooling 500
cryo system dipole magnet 200
alignment system 200
crane 200
sum 4900
CBM component Cost M€
TSR
Cost M€
CORE
Silicon Pixel Detector 1 -1.5 1.9
Silicon Strip Detector 7 6.93
Ring Imaging Cherenkov Detector 6 - 10 4.77 - 7.070