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ECAL FEE and DAQ

ECAL FEE and DAQ. Yury Gilitsky IHEP. PHENIX EMCAL PERFORMANCE. PHENIX EMCAL FEE. FEU 115M resistive divider. Analog part of FEE. Dynamic range 20MeV up to 30 GeV for Low Gain and 5MeV for small signals with 12-bit ADC. HERA-B ECAL FEE. HERA-B ECAL FEE. Analog chip. Rf = 12 M W.

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ECAL FEE and DAQ

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  1. ECAL FEE and DAQ Yury Gilitsky IHEP

  2. PHENIX EMCAL PERFORMANCE

  3. PHENIX EMCAL FEE FEU 115M resistive divider Analog part of FEE Dynamic range 20MeV up to 30 GeV for Low Gain and 5MeV for small signals with 12-bit ADC.

  4. HERA-B ECAL FEE

  5. HERA-B ECAL FEE

  6. Analog chip Rf = 12 MW 50 W Cf = 4pF PM 100 W + 5ns - 50 W 25ns - 100 W ADC - 100nF 22nF 100 W Buffer Integrator LHCB ECAL/HCAL FEE Chip : AMS BiCMOS 0.8um 4 channels per chip

  7. LHCB ECAL/HCAL analog part

  8. LHCB ECAL analog signals Pulse shapes from 50 GeV electron and from LED Average pulse shapes from 50 GeV electrons and from LED after clipping

  9. The ADC spectra from 50 GeV electrons (top) and LED pulse (bottom)

  10. I2C or SPI DAC CW2 or DC-DC2 APD CW1 or DC-DC1 AMPLIFIER Voltage reg-s(+/-) KOPIO ECAL FEE

  11. GAIN APD =171 Cd=350pF(16mm diam-r 130pF) ENC=11643e- (ENC=600e-+Cd*10e-/pF=4100e-) S/N=50 ENE=1.1MeV

  12. TESLA CALORIMETER HAMAMATSU APD 3X3mm readout

  13. CONCLUSIONS Optimization of the calorimeter readout chain is needed for CBM experimental conditions Photomultiplier and APD comparison shows practically the same performance as calorimeter photo detector. But for high rate and time precision applications photomultiplier is more preferable choice. Design of the high voltage overall system are good known from other experiments independently from photo detector type. Signal chain optimization is strongly depending from the photo detector.

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