brookhaven science associates u.s. department of energy 1 lecc2005 advanced front end signal...
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Brookhaven Science AssociatesU.S. Department of Energy 1
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Advanced Front End Signal Processing Electronics for Advanced Front End Signal Processing Electronics for ATLAS CSC System: ATLAS CSC System:
Status and post production performanceStatus and post production performance
Sachin Shrirang Junnarkar, Paul O’Connor, Anand KandasamyBrookhaven National Laboratory
11th Workshop on Electronics for LHC and future Experiments 11th Workshop on Electronics for LHC and future Experiments 12- 16 September 2005, Heidelberg, Germany 12- 16 September 2005, Heidelberg, Germany
Plenary Session B5Plenary Session B5
11th Workshop on Electronics for LHC and future Experiments 11th Workshop on Electronics for LHC and future Experiments 12- 16 September 2005, Heidelberg, Germany 12- 16 September 2005, Heidelberg, Germany
Plenary Session B5Plenary Session B5
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OverviewOverviewOverviewOverview
1. Introduction to Cathode Strip Chambers (CSCs)2. Amplifier shaper modules’ (ASM) pack 3. Production test setup for ASMpack4. Production test results 5. Conclusion
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Introduction to CSCsIntroduction to CSCsIntroduction to CSCsIntroduction to CSCs
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Front end electronics factsFront end electronics factsFront end electronics factsFront end electronics facts
2 ASM-I and 1 ASM-II make one pack
5 ASM packs per chamber• 4 x-strip (2 per side)• 1 y-strip
160 packs for the system (128 x-strip, 32 y-strip)
192 Channels per pack (30720 total channels)
HAMAC/Muon SCAs
ASM-II
AD9042AST
ASM2MUXHDMP1022 and HDMP1024
Optical
Transceivers
SDX-19-4-1-S
Preamp/Shaper ASICASM-I
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Signal Flow on CSCSignal Flow on CSCSignal Flow on CSCSignal Flow on CSC
ASM-IIASM-ICSC
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Production Test SetupProduction Test SetupProduction Test SetupProduction Test Setup
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Labview InterfaceLabview Interface
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Linearity Linearity
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RMS Noise Distribution For 96 ChannelsRMS Noise Distribution For 96 Channels
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Representative Pedestal DistributionRepresentative Pedestal Distribution
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RMS Noise in ADC count vs. Strip #RMS Noise in ADC count vs. Strip #
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2005Mean of Maximum Amplitude ADC Count
Distribution for 96 ChannelsMean of Maximum Amplitude ADC Count Distribution for 96 Channels
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Reconstructed TrackReconstructed Track
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ConclusionConclusionConclusionConclusion
Production for the front end electronics for the ATLAS CSC is complete
Testing of ASM-Packs is 91% complete
Chamber assembly is underway
We hope to ship assembled CSCs along with the front end electronics to CERN by the end of this month
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AcknowledgementsAcknowledgements
Vinnie Polychronakos Valeri Tcherniatine
Vadim GratchevAlexander Khodinov
Sri Harsha MarmarajuJack FriedKim Ackley
Ronald RyanJohn Triolo
Kevin WolniewiczRon Angona
Howard Hansen
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Radiation qualified COTs on ASM packsRadiation qualified COTs on ASM packsRadiation qualified COTs on ASM packsRadiation qualified COTs on ASM packs
COTS Responsible StatusAD9042 ADC SMU CompleteAD8042 Dual opamps Nevis Complete
10H116 differential line driver Nevis Complete
HDMP- 1022 serialiser SMU Complete
HDMP- 1024 deserialiser UCI Complete
SDX-19-4-1-S Optical TransceiverTransmitter Nevis Complete
SDX-19-4-1-S Optical TransceiverReciever BNL CompleteLHC-4913 adjustable voltage regulators CERN Complete
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ASICs on ASM PacksASICs on ASM PacksASICs on ASM PacksASICs on ASM Packs
Radiation qualification statusASICs Responsible For preselectionHAMA/MUON SCA Nevis CompleteASM2MUX BNL Complete
BNL Clock fanout BNLSame as ASM2MUX
Preamplifier Shaper BNL Complete
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CSC Environment CSC Environment CSC Environment CSC Environment
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2005ASM-Pack: Front end electronics
requirementsASM-Pack: Front end electronics requirements
Signal to Noise Ratio (SNR) 200:1Dynamic Range 10 bitsL1 Trigger Latency 2.5uS
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specificationsspecificationsASM-I: Preamplifier Shaper ASIC ASM-I: Preamplifier Shaper ASIC specificationsspecifications
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Power Distribution on ASMPackPower Distribution on ASMPackPower Distribution on ASMPackPower Distribution on ASMPack
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Cooling of ASM packCooling of ASM pack
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ADC Counts and fc relationsADC Counts and fc relations
Preamp gain = 3.8mV/fc 1700mV=2048 ADC counts 0.83mV=1 ADC Count at the preamp Noise in ADC Count = 2.5RMS Noise in mV= 2.158mV Noise in fC = 0.56fC = 3549 e-