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Calorimeter Mu2e Development electronics Front-end Review

Calorimeter Mu2e Development electronics Front-end Review. G. Corradi S. Ceravolo D.Tagnani F.Colao giovanni.corradi@lnf.infn.it 8 november 2016. Calorimeter routing. DAQ room. Detector Solenoid. Floating LV +28V / negative Floating positive HV 230 V (MPPC) ground. ~7-8 m

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Calorimeter Mu2e Development electronics Front-end Review

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  1. CalorimeterMu2e Development electronicsFront-end Review G. Corradi S. Ceravolo D.TagnaniF.Colao giovanni.corradi@lnf.infn.it 8november 2016

  2. Calorimeter routing DAQ room Detector Solenoid Floating LV +28V /negative Floating positive HV 230 V (MPPC) ground ~7-8 m overall cross section ~180 cm2 ~60-80 m overall cross section ~210 cm2 LV HV isolation OVP filter Detector Ground Safety Ground Floating Structures

  3. Layout front-end Unit 1 Mezanine Board Digitizer 28V, 30W 28V, 2W 8V 3V3 28_DC_V 1.15A, 32W per unit HV_250_DC_V 40mA, 10W per unit Unit 2 Unit 3 HV_250 DC V 320mA, 80W per 8 units common sense 28 DC V 10A, 280W per 8 units common sense Unit 4 Unit 5 Unit 6 Unit 7 Unit 8 Clock Distribution

  4. Architecture front-end • Optimization of the space in progress • Cables and connectors in progress

  5. Preamp-Regulator scheme

  6. Preamplifier_SIPM Preamplifier Shaper filter Select Gain Select Pulse Test Differential Driver Linear Regulation • Electric preamplifier scheme

  7. Simulation before end after filter

  8. Simulation bandwidthPreamplifier • Plot of the simulated transfer function, good phase margin • Not forgetting that the source capacity of approximately 1nf

  9. Simulation bandwidth after filter • Plot of the simulated transfer function, after shaper filter • Amplitude and phase plot with gain Vout/Vin 30

  10. Preliminary Specifications Preamplifier • Gain Vout/Vin 2 step remote control 15-30 • Dynamic differential +/-1V • Bandwidth 40Mhz • Rise time 10ns • Output impedance 100 Ω • Stability with source capacity max 1nf • Coupling output end source AC • Noise, with source capacity 1pf --------- • Power dissipation 45mW • Power supply +8V • Semi-gaussian shaping filter 3 pole • Time after shaper 25ns • Injection test pulse charging, fixed amplitude 400mV • Input protection 10mJ

  11. Linear_ Regulator Linear Driver Driver Decoder ADC 16bit Linear low Voltage section I2C line DAC 16bit • Electric linear regulator scheme

  12. Preliminary Specifications regulator • Vin max 250V • Current limit 2mA • Dynamic regulation 5V to 200V • Settling time 100us • Ramp-up programmable 1ms to 100ms • Ripple estimated 3mVpp • Stability, theoretical value Δt 10 °C better 50 ppm • Power dissipation with out load min 50 mW • Power dissipation max load, worst case max 350 mW • Temperature measurement -40 to 50°C • Monitor current detector 50uA to 2mA • Remote control I2C • GND insulated from earth Ceq max 5pf • Therma-Bridge to dissipate heat insulated gnd

  13. PCB Layer TOP Preamplifier • Drivers Section • Filtersection • Preamplifiersection • Dimention card 58mm x 30mm

  14. PCB Layer Bottom, Linear Regulator • Output connector • Analogsignals • Digital I2C • Supply lowvoltage • High voltage Temperature Sensor Detector Fixing hole and transfer heat • Very low thermal resistance

  15. Final Assemblay Thermal Contact By Bridge resistor • Thermal conducting • Power to dissipate max 350mW Board Temperature Sensor Output Connector Case (Cu)

  16. Mechanical front-end support Connector Output Electromagneticshield Coolingchannel Card Preamplifier_Regulator

  17. Controller ARM first prototype Regulator 8V Buffer I2C ARM Controller PrimaryHV_Generator • Protection fuse 28V • Voltage regulator 8V • ARM Controller • I2C communication buffer • Communication line with Digitizer • High voltage distributor

  18. Controller Arm first prototipe • Rearview input output digital I2C • Viewanalogconnectordifferentialsignals • Connector viewsone-wire temperature measurement

  19. Mezzanine card control 20 channels Front Panel view

  20. Mezzanine card control Rear view Analog to Digital Interfaces with Digitizer

  21. Mezzanine card control View inserted Connectors on the Front panel

  22. Mezzanine card control Sizing connector spaces

  23. Mezzanine card control Dimension Retail size card

  24. Status and perspectives • Preamp-regulator, completed test • There are maximum dynamicproblem • Firmware almostcompleted • Thermal tests to be completed • Radiationresistancetesting to be completed • Connection cablebetweenpre and controller wefound a likelychampion • Project progress, primaryregulatorprototype 250V 350mA • Project progress, primaryregulatorprototype 8V 1A, with activefilter output. • Project progress, controller ARM per 20 channels • Draft of communicationprotocol I2C

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