Commissioning of ICAL prototype detector electronics

Commissioning of ICAL Commissioning of ICAL prototype detector electronicsprototype detector electronics

B.SatyanarayanaB.Satyanarayana

TIFR, MumbaiTIFR, Mumbai

22B.Satyanarayana, TIFR, Mumbai INO Collaboration Meeting, BARC, April 13-14 2008B.Satyanarayana, TIFR, Mumbai INO Collaboration Meeting, BARC, April 13-14 2008

The teamThe team

Anita Behere, V.B.Chandratre, V.M.Datar, Sudheer K.Mohammed, P.K.Mukhopadhyay, S.M.Raut,

R.S.Shastrakar, Vaishali ShedamBhabha Atomic Research Centre, Mumbai, 400085

Satyajit JenaIndian Institute of Technology Bombay, Mumbai, 400076

Sarika Bhide, Manas Bhuyan, S.R.Joshi, S.D.Kalmani, Shekhar Lahamge, N.K.Mondal, P.Nagaraj, B.K.Nagesh,

Shobha K. Rao, L.V.Reddy, Asmita Redij, M.Saraf, B.Satyanarayana, R.R.Shinde, S.S.Upadhya, P.Verma

Tata Institute of Fundamental Research, Mumbai, 400005


Electronics scheme for prototypeElectronics scheme for prototype

Design and fabrication of almost all the components is completed


RPC stack for ICAL prototypeRPC stack for ICAL prototype


BigStackBigStack status status

X-plane

Telescope


Prototype electronics checklistPrototype electronics checklist Preamp for prototype detectorPreamp for prototype detector 16-channel analog front-end16-channel analog front-end 32-channel digital front-end32-channel digital front-end Control and data routerControl and data router Trigger and TDC routerTrigger and TDC router Data and monitor control moduleData and monitor control module Data and monitor readout ModuleData and monitor readout Module Final trigger moduleFinal trigger module Power supplies & monitoringPower supplies & monitoring On-line monitoring & servicesOn-line monitoring & services DAQ & analysis softwareDAQ & analysis software Summary and action planSummary and action plan


Front-end inventory per layerFront-end inventory per layer

• 2 planes (X & Y)

• 64 readout channels

• 8 preamplifier boards

• 4 Analog Front Ends

• 2 Digital Front Ends


PreamplifiersPreamplifiersHMCsHMCs inventory inventory First stage negative input(1595): 1500 pcsFirst stage negative input(1595): 1500 pcs First stage positive input(1597): 1500 pcsFirst stage positive input(1597): 1500 pcs Second stage(Second stage(15131513): ): 1400 pcs1400 pcs

2 types of preamps for 2 types of preamps for XX and and YY planes planesCascaded HMCs, Cascaded HMCs, Gain: 80Gain: 80, 8-in-1, 8-in-1

Rise time: 3nS, Rise time: 3nS, Noise band: ±7mVNoise band: ±7mVNeed about 100 boards per stackNeed about 100 boards per stackAbout 15 ready, 6 installed on X-planeAbout 15 ready, 6 installed on X-planeInstallation in full swing …Installation in full swing …Problem with Y-plane boardsProblem with Y-plane boards


Characterisation of the front-endCharacterisation of the front-end


16-channel analog front-end16-channel analog front-end

FunctionsFunctions To digitize the preamp To digitize the preamp

signalssignals To form the pre-trigger To form the pre-trigger

(Level-0) logic(Level-0) logic Signal shapingSignal shaping

FeaturesFeatures Based on the AD96687 ultra-Based on the AD96687 ultra-

fast comparatorfast comparator Common adjustable Common adjustable

threshold going up to 500mVthreshold going up to 500mV VVThTh now at -20mV now at -20mV ECL output for low I/O delay ECL output for low I/O delay

and fast rise timesand fast rise times


32-channel digital front-end32-channel digital front-end

FunctionsFunctions Latch RPC strip status on triggerLatch RPC strip status on trigger Transfer latched data serially Transfer latched data serially

through a daisy chain to the readout through a daisy chain to the readout modulemodule

Time-multiplex strip signals for noise Time-multiplex strip signals for noise rate monitoring rate monitoring

Generate Level-1 trigger signalsGenerate Level-1 trigger signals

FeaturesFeatures Latch, shift register, multiplexer are Latch, shift register, multiplexer are

implemented in CPLD XC95288implemented in CPLD XC95288 Trigger logic is built into a CPLD Trigger logic is built into a CPLD

XC9536; flexibleXC9536; flexible Data transfer rates of up to 10MHzData transfer rates of up to 10MHz


Control and data routerControl and data router

To route the control To route the control signals and shift clock signals and shift clock from controller to the from controller to the individual FEP modulesindividual FEP modules

To route the latch data To route the latch data from all the FEPs to the from all the FEPs to the readout modulereadout module

To route strip signals To route strip signals from FEPs to the from FEPs to the scalers for noise rate scalers for noise rate monitoringmonitoring


Trigger and TDC routerTrigger and TDC routerTo route the m-Fold To route the m-Fold signals from each RPC signals from each RPC plane to the final trigger plane to the final trigger modulemodule

To route TDC stop signals To route TDC stop signals (1-Fold) from each plane (1-Fold) from each plane to the TDC moduleto the TDC module

All signals are in LVDS All signals are in LVDS logic, except TDC stop logic, except TDC stop signals which are in ECL signals which are in ECL logic for achieving better logic for achieving better timing resolutiontiming resolution


Data and monitor control moduleData and monitor control moduleOn FTO, triggers all the FEPs to latch the strip signalsInitiates serial data transfer to the readout moduleManages the noise rate monitoring of strip signals, by generating periodic interrupts and selecting channels to be monitored sequentiallyCAMAC interface for parameter configuration (like data transfer speed, size, monitoring period) as well as diagnostic procedures


Data and monitor readout ModuleData and monitor readout ModuleSupports two serial Supports two serial connections for event data connections for event data recording of X and Y recording of X and Y planes and 8 channels for planes and 8 channels for noise rate monitoringnoise rate monitoringSerial Data converted into Serial Data converted into 16-bit parallel data and 16-bit parallel data and stored temporarily in 4k stored temporarily in 4k FIFO bufferFIFO bufferSource of LAM for Source of LAM for external trigger sourceexternal trigger sourceCAMAC interface for data CAMAC interface for data readout to Computerreadout to Computer


Final trigger moduleFinal trigger moduleReceives m-fold layer triggers and Receives m-fold layer triggers and generates m generates m n fold final trigger n fold final triggerFinal trigger out (FTO) invokes Final trigger out (FTO) invokes LAM and is Logic Trigger Out LAM and is Logic Trigger Out (LTO) vetoed by gated LAM(LTO) vetoed by gated LAMInputs can be selectively masked Inputs can be selectively masked The rates of different m The rates of different m n n combinations counted by combinations counted by embedded 16-bit scalersembedded 16-bit scalersRate monitoring of LTO signal Rate monitoring of LTO signal using the built in 24-bit scalerusing the built in 24-bit scalerLogic inputs and m Logic inputs and m n signals n signals are latched on an FTO and can be are latched on an FTO and can be read via CAMAC commandsread via CAMAC commandsImplementing using FPGA adds to Implementing using FPGA adds to circuit simplicity and flexibilitycircuit simplicity and flexibility


Power supplies and monitoringPower supplies and monitoringEssentially commercial Essentially commercial solutionssolutions

Low voltage & monitoringLow voltage & monitoring CAEN’s 1527 mainframeCAEN’s 1527 mainframe EASY 3000 systemEASY 3000 system Multi-channel, adjustable Multi-channel, adjustable

voltage, high current modulesvoltage, high current modules

High voltage & monitoringHigh voltage & monitoring CAEN’s 2527 mainframeCAEN’s 2527 mainframe

RPC bias current monitoringRPC bias current monitoring CAEN’s 128-channel ADC CAEN’s 128-channel ADC

board in 2527 mainframeboard in 2527 mainframe


Low voltage current inventoryLow voltage current inventory

PreampsPreamps ±6V 16.32A each±6V 16.32A each

AFEsAFEs +6V 28.8A for each plane+6V 28.8A for each plane -6V 34.8A for each plane-6V 34.8A for each plane

DFEsDFEs +8V 11.76A for each plane+8V 11.76A for each plane -8V 6.36A for each plane-8V 6.36A for each plane


On-line monitoring & servicesOn-line monitoring & servicesOn-line web portal for monitoring chambers under On-line web portal for monitoring chambers under test as well as ambient conditions of the laboratoriestest as well as ambient conditions of the laboratoriesChambersChambers High voltage and currentHigh voltage and current Strip noise ratesStrip noise rates Cosmic muon efficiencyCosmic muon efficiency

Ambient parametersAmbient parameters TemperatureTemperature Relative humidityRelative humidity Barometric pressureBarometric pressure

Magnet control and monitoringMagnet control and monitoringGas system control and monitoringGas system control and monitoringWeb based electronic log bookWeb based electronic log book


Scheme of on-line web portalScheme of on-line web portal


Screenshot of DAQ softwareScreenshot of DAQ software


BigStackBigStack data analysis data analysis


Summary and action planSummary and action planPrototype electronics in reasonable shapePrototype electronics in reasonable shapeExtra manpower for preamp commissioningExtra manpower for preamp commissioningEfforts to solve Y-plane preampsEfforts to solve Y-plane preampsHopeful of solving final trigger board issues in Hopeful of solving final trigger board issues in a week or soa week or soShould be ready by June 2008Should be ready by June 2008Fabrication of scintillator paddles’ in summerFabrication of scintillator paddles’ in summerGUI front-end for DAQ programGUI front-end for DAQ programFurther improvements for monitoring possibleFurther improvements for monitoring possible

Documents

Commissioning of ICAL prototype detector electronics