The CBM Experiment

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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

description

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

Transcript of The CBM Experiment

Page 1: The CBM  Experiment

The CBM Experiment

Radiation hard Silicon (pixel/strip) Tracking System in a magnetic dipole field

Electron detectors: RICH & TRD & ECAL: pion suppression better 104

Hadron identification: TOF-RPC

Measurement of photons, π0, η, and muons: electromagn. calorimeter (ECAL)

High speed data acquisition and trigger system

Cost Review Meeting May 31, 2005

Peter Senger, GSI

Page 2: The CBM  Experiment

CBM component Cost M€

TSR

Silicon Pixel Detector 1 -1.5

Silicon Strip Detector 7

Ring Imaging Cherenkov Detector

6 - 10

Transition Radiation Detector 8 - 10

TOF stop detector (RPC) 5 - 7.4

Electromagnetic Calorimeter + preshower

12.2

Superconducting magnet 3

Data acquisition and trigger 4 - 6

Computing 3

Infrastructure 5

Sum 54.2 - 68.1

Total cost CBM Technical Status ReportJanuary 2005

Page 3: The CBM  Experiment

Silicon Tracking System

Design goals: • low materal budget: d < 200 μm• single hit resolution < 20 μm• radiation hard (dose 1015 neq/cm2)• read-out time 25 ns

3 Pixel Stations and 4 Strip Stations (acceptance 2.5o < θ < 25o):

distance from target

(cm)

type area

(cm2)

5 pixel 25

10 pixel 100

20 pixel 400

40 strip 1600

60 strip 3600

80 strip 6400

100 strip 10000

Silicon Pixel Vertex Detector

R&D on Monolithic Active Pixel Sensors (MAPS):• pitch 30 μm • thickness below 100 μm • single hit resolution : 4 μm • radiation tolerant (1013 neq/cm2)• ultimate read-out time few μs

STS 1 - 3

Page 4: The CBM  Experiment

CBM MAPS chips will look differently: Chip size: ~0.5 x 1 cm2, 50% sensor 50% r/o.

CBM MAPS ladders will consist of 5 chips.

Existing MAPS detector

“MIMOSA 5”

(1.7 x 1.9 cm2)

Two inner and two outer sectors, routing of readout microcables.

MAPS detector module: ladders mounted on either side of a substrate providing (active?) cooling

Vertex Detector section of the CBM Silicon Tracker

Design studies on a MAPS detector station

active

readout

Page 5: The CBM  Experiment

Silicon Strip Tracker

4 Strip tracking stations Tracking Stations Nr. 4 and 6

Double sided Si-Strip detectors:thickness 100 - 150 μm pitch 25 μmStereo angle 15o

Page 6: The CBM  Experiment

R&D/prototypingMAPS

Cost k€STRIPSCost k€

small sensor prototype 40 20

reticle-size prototype 200 50

radiation hard technology/design 20 50

front-end design + prototype chips - 20

chip/sensor thinning 100 20

low-mass Kapton bus 20 -

mockup of a detector module/station 10 20

prototype thin support, active cooling 50 -

prototype detector module/ladder 10 50

prototype front-end hybrid - 30

prototype readout board 10 10

prototype detector station 20 100

Sum 480 370

ProductionMAPS

Cost k€STRIPSCost k€

front-end chips 400 1200

sensors (tested) - 1600

front-end hybrid - 200

cables 10 20

low-mass Kapton cables 40 -

front-end chip acceptance tests 100 100

front-end hybrid assembly & test - 500

module assembly & tests, incl. spares 50 500

detector stations assembly 100 100

geometrical survey, alignement 20 30

Sum 720 4250

Infrastructure, Slow-Controls, IntegrationMAPSCost in

k€

STRIPSCost in

k€

Infrastructure

- custom-designed assembly tools 100 100

- wafer probe station - 500

- low-mass mechanical support 100 600

- cooling system 100 500

- power supply crates, LV, HVmodules 50 150

- VME-type DAQ crates & modules 50 50

- cooling unit 10 30

Slow-controls & readout

Online computers 10 10

Online control systems 40 60

Integration

System assembly and test 20 80

Installation into experiment 20 40

Maintenance/sensor replacement 200 200

Sum 700 2310

Silicon Tracking SystemMAPSCost in

k€

STRIPSCost in

k€

Sum 1900 6930

Silicon Tracking Station

Page 7: The CBM  Experiment

Design of a fast RICH

Design goals: • electron ID for γ > 42• e/π discrimination > 100• hadron blind up to about 6 GeV/c• low mass mirrors (Be-glass)• fast UV detector

Page 8: The CBM  Experiment

Radiator Vessel volume ~ 60 m3

Photon-detector: 105 PM tubes, 6 mm

ø

Mirror: 19 m2, Be-glass (X = 1.25% X0)

RICH components

Page 9: The CBM  Experiment

RICHthe cost of the items include material, design, construction

Item cost (k€)

radiator vessel and support, 60 m3 250

radiator gas supply system incl. controls and monitoring 300

Be-glass mirrors, 19 m2, 100 hexagonsAlternative: glass mirrors

2500(200)

mirror support structure 400

Photodetectors (PMT FEU-Hive), 105 channels 1500

Front-End electronics, 105 channels 600

HV supply, 105 channels 500

Photodetector support and magnetic shielding 150

light guides, 105 channels 100

Services (cables, crates, ...) 250

prototyping and tests 200

commissioning 50

safety 50

installation 30

alignment 50

transport 20

hired manpower

R&D 70

infrastructure 50

maintenance and operation

7070 (4770)

Page 10: The CBM  Experiment

Design of a fast TRD

Simulation of pion suppression: MWPC based TRD

90%.

Design goals: e/π discrimination of > 100 (p > 1 GeV/c)• High rate capability up to 100 kHz/cm2

• Position resolution of about 200 μm• Large area ( 450 - 650 m2, 9 – 12 layers)

Page 11: The CBM  Experiment

Item cost (k€)

radiator ( 480 – 640 m2) 450-600

read-out chambers (480 – 640 m2) 2000-2600

Services (HV, LV, cooling) 1000-1200

gas supply system incl. controls 300-400

mechanics, mainfraime 700-800

Front End Electronics (5.6 – 7.5x105channels) 2600-3000

commissioning 200

prototyping and tests 200

spare parts 100

safety 100

installation 100-200

alignment 100

transport 100

hired manpower 100

R&D 400

infrastructure, cables, crates 200

maintenance and operation 100/y

Sum 8750 - 10400

TRD (MWPC based)the cost of the items include material, design, construction

Page 12: The CBM  Experiment

single cell RPC shielded RPC prototype

Design goals: • Time resolution ≤ 80 ps• Rate capability up to 20 kHz/cm2

• Efficiency > 95 %• Large area 100 m2

• Long term stability

Layout options

Development of a large-area high-rate timing RPC

Page 13: The CBM  Experiment

TOF-RPCThe cost include material, engineering design, and construction

Item cost (k€)

glass plates (low resistivity, 1100 m2) 330-900

detector modules (110 m2) 500-600

mechanical structure, mainframe 300-400

Services (HV, LV, cooling) 450

gas supply system incl. controls 150-200

FEE: preamplifier/discriminator (65000 channels) 800

FEE: digitizer and clock 2000

cables, crates 300-400

prototyping and tests 300

commissioning -

spare parts 400

safety 50

installation 50

alignment

transport 50

hired manpower

R&D 200

infrastructure

maintenance and operation (power 100 kW, gas )

30

Sum 5910 - 6830

Page 14: The CBM  Experiment

ECAL region Inner Middle Outer Cell size 4x4 cm2 6x6 cm2 12x12 cm2 No. of channels 6300 6400 4100

LHCb

The Electromagnetic Calorimeter

Moliere radius

lead thickness

scintillator thickness

No of layers ( X = 20 X0)

cell length

4 cm 0.275 mm 0.8 mm 390 466 mm

6 cm 0.275 mm 1.5 mm 360 680 mm

CBM -ECAL

Page 15: The CBM  Experiment

ECAL The cost include material, engineering design,and construction

Item cost (k€)

4100 outer modules (460 € per piece) + 1500 HERA-B modules

1886

1600 middle modules (700 € per piece) 1120

700 inner modules ( 1250 € per piece) 875

Tooling for construction and assembly 250

16800 PMT (90 € per piece) + 1500 HERA-B PMT 1512

18000 SiPM (for preshower) (10 € per piece) 180

ECAL HV system: 16800 CW-bases (50 € per piece) + 1500 HERA-B CW-bases

840

mechanical structure 300

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

Page 16: The CBM  Experiment

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

Page 17: The CBM  Experiment

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

Page 18: The CBM  Experiment

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

Page 19: The CBM  Experiment

DAQthe costs of the items include material, design, construction

Item cost (k€)

Data Buffers and Event building switch 1000

Hardware processors (FPGA based) (incl. crates, network, ect) 2000

Software processors (CPU based) 2000

R&D 500

5500

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€

Page 20: The CBM  Experiment

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

Page 21: The CBM  Experiment

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

Transition Radiation Detector 8 - 10 8.750 – 10.400

TOF stop detector (RPC) 5 - 7.4 5.910 – 6.830

Electromagnetic Calorimeter + preshower

12.2 9.176

Superconducting magnet 3 1.893

Data acquisition and trigger 4 - 6 5.5

Computing (Commissioning) 3 1

Infrastructure 5 4.9

Sum 54.2 - 68.1 50.729 – 55.599

Total cost CBMComparison: Tech. Status Report Jan 2005 Cost Review May 2005