electronics for the ino ical detector b.satyanarayana tata institute of fundamental research for ino...

Electronics for theElectronics for the INO ICAL detector INO ICAL detector

B.SatyanarayanaB.SatyanarayanaTata Institute of Fundamental ResearchTata Institute of Fundamental Research

For INO collaborationFor INO collaboration

22B.Satyanarayana KEK, Japan November 27, 2007B.Satyanarayana KEK, Japan November 27, 2007

INO ICAL prototype detectorINO ICAL prototype detector13 layers of 5 cm thick magnetised iron plates13 layers of 5 cm thick magnetised iron plates40 ton absorber mass40 ton absorber mass1.5 Tesla magnetic field1.5 Tesla magnetic field12, 1m12, 1m22 RPC layers RPC layersAbout 800 readout channelsAbout 800 readout channelsTrigger on cosmic ray muons (RPC and scintillation paddles)Trigger on cosmic ray muons (RPC and scintillation paddles)Record strip hit and timing informationRecord strip hit and timing informationChamber and ambient parameter monitoringChamber and ambient parameter monitoring


Electronics scheme for prototypeElectronics scheme for prototype


Front-ends on prototype chambersFront-ends on prototype chambers


Typical avalanche RPC pulseTypical avalanche RPC pulse


Preamplifier pulses on triggerPreamplifier pulses on trigger


Charge-pulse height plotCharge-pulse height plot


Pulse height-pulse width plotPulse height-pulse width plot


Charge spectrum of the RPCCharge spectrum of the RPC

= 375fC


Time spectrum of the RPCTime spectrum of the RPC

t = 1.7nS


Preamps for prototype detectorPreamps for prototype detector

HMC basedHMC based Opamp basedOpamp based


Front-end boardsFront-end boards

16-channel analog front-end16-channel analog front-end 32-channel digital front-end32-channel digital front-end


Signal router boardsSignal router boards

Control and data

Control and data

Trigger and T

DC

Trigger and T

DC


Data and monitor control moduleData and monitor control module


Data and monitor readout ModuleData and monitor readout Module


Final trigger moduleFinal trigger module


Prototype detector stack & DAQPrototype detector stack & DAQ


On-line data monitoring systemOn-line data monitoring system


ICAL detector fact sheetICAL detector fact sheetNo. of modulesNo. of modules 33

Module dimensionsModule dimensions 16 m X 16 m X 12 m16 m X 16 m X 12 m

Detector dimensionsDetector dimensions 48 m X 16 m X 12 m48 m X 16 m X 12 m

No. of layersNo. of layers 140140

Iron plate thicknessIron plate thickness 6 cm6 cm

Gap for RPC traysGap for RPC trays 2.5 cm2.5 cm

Magnetic fieldMagnetic field 1.3 Tesla1.3 Tesla

RPC dimensionsRPC dimensions 2 m X 2 m2 m X 2 m

Readout strip widthReadout strip width 3 cm3 cm

No. of RPCs/Road/LayerNo. of RPCs/Road/Layer 88

No. of Roads/Layer/ModuleNo. of Roads/Layer/Module 88

No. of RPC units/LayerNo. of RPC units/Layer 192192

No. of RPC unitsNo. of RPC units 2688026880

No. of readout stripsNo. of readout strips 3.6 X 103.6 X 106 6


What is specific for ICAL DAQ?What is specific for ICAL DAQ?

Large number of data channels to Large number of data channels to handle; large scale integration neededhandle; large scale integration needed

But, fewer and simpler parameters to But, fewer and simpler parameters to recordrecord

Low rates; high degree of multiplexing Low rates; high degree of multiplexing possiblepossible

Monolithic detector; unlike the case Monolithic detector; unlike the case accelerator based detectorsaccelerator based detectors


Recordable parameters (Detector)Recordable parameters (Detector)

Event dataEvent data Strip hit information (Boolean, 1 bit per strip)Strip hit information (Boolean, 1 bit per strip) Strip signal timing with reference to event triggerStrip signal timing with reference to event trigger Strips ORed to reduce timing channelsStrips ORed to reduce timing channels

Monitor dataMonitor data Strip single/noise counting rateStrip single/noise counting rate Chamber voltage and currentChamber voltage and current


Recordable parameters (DAQ)Recordable parameters (DAQ)

Preamplifier gain and input offsetPreamplifier gain and input offset

Discriminator threshold and pulse widthDiscriminator threshold and pulse width

Trigger logic parameters and tablesTrigger logic parameters and tables

DAQ system parametersDAQ system parameters

Controllers’ and computers’ statusControllers’ and computers’ status


Open loop versus closed loop systemsOpen loop versus closed loop systems

Gas flow via Mass Flow ControllersGas flow via Mass Flow Controllers

Exhaust gas flow monitorExhaust gas flow monitor

Residual gas analyser dataResidual gas analyser data

Gas contaminants’ monitor dataGas contaminants’ monitor data

Gas leak detectorsGas leak detectors

Safety bubblers’ statusSafety bubblers’ status

Recordable parameters (Gas system)Recordable parameters (Gas system)


TemperatureTemperature GasGas Front-end electronicsFront-end electronics

Barometric pressureBarometric pressure GasGas

Relative humidityRelative humidity Dark currents of the bias suppliesDark currents of the bias supplies ElectronicsElectronics

Recordable parameters (Ambient)Recordable parameters (Ambient)


Broad aspects and requirementsBroad aspects and requirementsRPC bias, signal pickup and front-end electronicsRPC bias, signal pickup and front-end electronicsDigital processing and data readoutDigital processing and data readoutData control and acquisitionData control and acquisitionTrigger and global clock systemsTrigger and global clock systemsSlow control and monitoringSlow control and monitoring Electronics, trigger and data acquisition systemsElectronics, trigger and data acquisition systems Low and high voltage power suppliesLow and high voltage power supplies Closed loop gas systemClosed loop gas system Cavern ambient parametersCavern ambient parameters Magnet operation and controlMagnet operation and control Access, safety devices and controlAccess, safety devices and control


Major sub-systemsMajor sub-systemsAnalog and digital front-endsAnalog and digital front-ends

Mounted inside RPC assembliesMounted inside RPC assemblies Programmable(?) preamps and comparatorsProgrammable(?) preamps and comparators

DAQ stationsDAQ stations Mounted on detector front-facesMounted on detector front-faces Latches, pre-trigger generators, pipelines and buffersLatches, pre-trigger generators, pipelines and buffers Time to digital converters (TDCs)Time to digital converters (TDCs) Data concentrators and high speed serial transmittersData concentrators and high speed serial transmitters

VME back-endsVME back-ends Data collectors and frame transmittersData collectors and frame transmitters Trigger control and fan-outsTrigger control and fan-outs

Trigger systemTrigger system Works on inputs from front-ends, back-ends or externalWorks on inputs from front-ends, back-ends or external Place for high density FPGA devicesPlace for high density FPGA devices


Technology standardsTechnology standards

RPC bias: Industrial solutions, DC-HVDCRPC bias: Industrial solutions, DC-HVDC

Front-end: ASICFront-end: ASIC

Digital processing: ASIC/FPGADigital processing: ASIC/FPGA

Backend: VMEBackend: VME

Trigger system: FPGA, Farms(?)Trigger system: FPGA, Farms(?)

Operating system: LinuxOperating system: Linux

Slow control: SCADA/PVSS/EthernetSlow control: SCADA/PVSS/Ethernet


ICAL detector conceptICAL detector concept

50 Kton magnetised ICAL


Placement of front-end electronicsPlacement of front-end electronics

RPC Gas volume

RPC signal pickup panel

Front-end for X-plane

Front-end for Y-plane


Cables & services routing Cables & services routing

RPC

Iron absorber

RPC

Signal cables from RPCs

Gas, LV & HV cables from RPCs


DAQ & services’ sub-stationsDAQ & services’ sub-stations

Iron absorber

Iron absorber

Iron spacerRPC

DAQ

LVHVGas

Gas


A promising DC-HVDC chipA promising DC-HVDC chip

Can this be good cheaper alternative to commercial solution?


Fast preamp ASICFast preamp ASIC

Rise Time: ~1ns

Power consumption: ~100mW

Power supply: 3.3V

Technology: 0.35Dynamic range: 50-350fF


Comparator ASICComparator ASIC


Example for front-ends: Example for front-ends: NINONINO

Francis Anghinolfi et al


Other examples for front-endsOther examples for front-ends

Front-end for CMS Muon Barrel RPC systemFront-end for CMS Muon Barrel RPC system

Front-end for ATLAS Muon RPC systemFront-end for ATLAS Muon RPC system


HPTDC architectureHPTDC architectureJ.

Ch

rist

ian

sen

, C

ER

N


HPTDC specificationsHPTDC specifications


AMT chip for ATLAS Muon RPCAMT chip for ATLAS Muon RPCY

asu

o A

rai

(KE

K)


AMT chip performanceAMT chip performance


ALICE TOF timing systemALICE TOF timing systemGood example of a Good example of a large scale integration large scale integration of timing system using of timing system using industrial support industrial support (CAEN)(CAEN)

VME64X backplaneVME64X backplane

2400 high resolution 2400 high resolution (25pS) channels per (25pS) channels per cratecrate

Crate equipped with Crate equipped with other control, trigger, other control, trigger, communication and LV communication and LV supply modulessupply modules


SummarySummaryRPC’s pulse characteristics and ICAL’s requirements RPC’s pulse characteristics and ICAL’s requirements understood to a large extent; more will be known from the understood to a large extent; more will be known from the prototype detectorprototype detectorTime to formulate competitive schemes for electronics, data Time to formulate competitive schemes for electronics, data acquisition, trigger, control, monitor, on-line software, acquisition, trigger, control, monitor, on-line software, databases and other systemsdatabases and other systemsFeasibility R&D studies on front-ends, timing elements, trigger Feasibility R&D studies on front-ends, timing elements, trigger architectures, on-line data handling schemes should be architectures, on-line data handling schemes should be concurrently taken upconcurrently taken upSegmentation, power budgets, integration issues etc. must be Segmentation, power budgets, integration issues etc. must be addressedaddressedTrade-offs between using available solutions and customised Trade-offs between using available solutions and customised design and developments for ICAL to be debateddesign and developments for ICAL to be debatedDesign tools, infrastructure, fab facilitiesDesign tools, infrastructure, fab facilitiesNeeds national and international collaboration and team workNeeds national and international collaboration and team work

Backup slidesBackup slides


Typical first stage preamp responseTypical first stage preamp response

Rise time: ~2ns

Gain: 10

I/O impedance: 50 Package: 22-pin DIP

Size: 30X 15 mm)

Power supplies: ± 6V

Power consumption: ~110mW

Bandwidth: 350MHz


HMC performance: Dynamic rangeHMC performance: Dynamic range

0

500

1000

1500

2000

2500

3000

3500

4000

4500

0 100 200 300 400 500 600

0

100

200

300

400

500

600

700

800

900

1000

0 20 40 60 80 100 120

0

500

1000

1500

2000

2500

0 50 100 150 200 250

0

500

1000

1500

2000

2500

0 50 100 150 200 250

BMC 1595 BMC 1596

BMC 1597 BMC 1598


HMC performance: Timing responseHMC performance: Timing response

BMC 1595

BMC 1598BMC 1597

BMC 1596

electronics for the ino ical detector b.satyanarayana tata institute of fundamental research for ino...

Documents

satyanarayana kek

trigger slide

prototype slide

tdc slide

ns slide

fc slide

ino ical detector b

ino collaboration slide