Difference between revisions of "OVERVIEW OF SPECIFICATIONS"

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== '''EEEMCal Design Requirements'''==
 
== '''EEEMCal Design Requirements'''==
  
−
PRESENT DESIGN PARAMETERS (2023)
+
=== PRESENT DESIGN PARAMETERS (2023) ===
  
 
'''Coverage: -4 < eta < ~-1'''  
 
'''Coverage: -4 < eta < ~-1'''  
Line 10: Line 10:
 
:* Physical End: -175cm
 
:* Physical End: -175cm
 
:* Weight: ~5000kg
 
:* Weight: ~5000kg
 +
 +
'''Number of channels:''' 3000
  
 
'''Egamma:''' 20 MeV – 20 GeV
 
'''Egamma:''' 20 MeV – 20 GeV
Line 22: Line 24:
  
 
'''Sampling rate:''' 250 MHz
 
'''Sampling rate:''' 250 MHz
−
 
 
'''Peaking time:''' ~4ns
 
'''Peaking time:''' ~4ns
−
 
 
'''Digitization gate:''' ~(100-200) ns
 
'''Digitization gate:''' ~(100-200) ns
−
 
 
'''Signal rate:''' =<1 MHz/channel
 
'''Signal rate:''' =<1 MHz/channel
  
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'''Maximum annual dose:''' ~ 3krad/year (30 Gy/year) EM; 1010 n/cm2 hadronic at top luminosity
 
'''Maximum annual dose:''' ~ 3krad/year (30 Gy/year) EM; 1010 n/cm2 hadronic at top luminosity
  
−
'''Photo Detector:''' 6x6mm2 SiPM (Hamamatsu S14160; 10um cell)
+
'''Photo Detector:''' 6x6mm2 SiPM (Hamamatsu S14160-6010PS; 10um cell)
 +
:* Pixel pitch: 10um
 +
:* Number of pixels: 359011
 +
:* 4 SiPM per crystal: 1.4M pixels per crystal
 +
:* Spectral response range: 290-900nm (peak sensitivity: 460 nm)
 +
:* PDE: 18%
 +
:* Breakdown voltage: 38 V
 +
:* DCR: typical 3.0/Max 20.0 Mcps
 +
:* Gain: 1.8E05
 +
:* Temperature coefficient: 34 mV/degC
 +
:* Capacitance/channel: 2.5 nF
 +
 
 +
 
 +
'''Pre-amp:'''
 +
:* Linearity: < 0.5%
 +
:* Gain stability: <0.5%
 +
:* Peak time: 20ns
 +
:* Charge resolution: 14-bit
 +
 
 +
'''FEB, RDO:'''
 +
:* SiPM bias montoring
 +
:* Temperature monitoring
 +
:* FEB on detector
 +
 
  
−
Number of channels:
 
  
 
'''Data sparsification/feature extraction:'''  
 
'''Data sparsification/feature extraction:'''  
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:* Pileup detection and recovery
 
:* Pileup detection and recovery
  
−
 
+
=== NUMBERS FROM 2021 DETECTOR PROPOSAL DEVELOPMENT - SUPERSEDED ===
−
NUMBERS FROM 2021 DETECTOR PROPOSAL DEVELOPMENT - SUPERSEDED
 
  
 
'''Coverage: -4 < eta < ~-1'''  
 
'''Coverage: -4 < eta < ~-1'''  
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−
'''Readout Example JLab:'''
+
== '''Readout Example JLab:'''==
 
:* fADC-250 MHz 12 bit, 16 channels/VME slot;  
 
:* fADC-250 MHz 12 bit, 16 channels/VME slot;  
 
:* 3us buffer;  
 
:* 3us buffer;  
 
:* FPGA processing of waveform: zero suppression, pulse integral, max amplitude timing (<1 ns) -> readout;  
 
:* FPGA processing of waveform: zero suppression, pulse integral, max amplitude timing (<1 ns) -> readout;  
 
:* VXS: for L1 trigger or for Streaming Readout
 
:* VXS: for L1 trigger or for Streaming Readout

Latest revision as of 14:55, 27 October 2023

EEEMCal Design Requirements

PRESENT DESIGN PARAMETERS (2023)

Coverage: -4 < eta < ~-1

  • Rin=9cm, Rout=63cm (-X < eta < -XX)
  • Length: 60cm
  • Offset from center: -175cm
  • Physical Start: -235cm
  • Physical End: -175cm
  • Weight: ~5000kg

Number of channels: 3000

Egamma: 20 MeV – 20 GeV

Energy resolution: 1%+2.5%/sqrtE + 1%/E

Spatial resolution: 1+3%/sqrtE

Time resolution:

Typical signal size: <1V

Sampling rate: 250 MHz Peaking time: ~4ns Digitization gate: ~(100-200) ns Signal rate: =<1 MHz/channel

Signal dynamics

  • 2V dynamic range
  • ADC 12 bits (0.4095)
  • ~5 MeV/count
  • ADC threshold: ~15 MeV (3 counts)

Maximum annual dose: ~ 3krad/year (30 Gy/year) EM; 1010 n/cm2 hadronic at top luminosity

Photo Detector: 6x6mm2 SiPM (Hamamatsu S14160-6010PS; 10um cell)

  • Pixel pitch: 10um
  • Number of pixels: 359011
  • 4 SiPM per crystal: 1.4M pixels per crystal
  • Spectral response range: 290-900nm (peak sensitivity: 460 nm)
  • PDE: 18%
  • Breakdown voltage: 38 V
  • DCR: typical 3.0/Max 20.0 Mcps
  • Gain: 1.8E05
  • Temperature coefficient: 34 mV/degC
  • Capacitance/channel: 2.5 nF


Pre-amp:

  • Linearity: < 0.5%
  • Gain stability: <0.5%
  • Peak time: 20ns
  • Charge resolution: 14-bit

FEB, RDO:

  • SiPM bias montoring
  • Temperature monitoring
  • FEB on detector


Data sparsification/feature extraction:

  • Peak (amplitude)
  • Integral
  • Time
  • Pedestal
  • Number of samples
  • Pulse quality
  • Pileup detection and recovery

NUMBERS FROM 2021 DETECTOR PROPOSAL DEVELOPMENT - SUPERSEDED

Coverage: -4 < eta < ~-1

  • Inner: Rin=15cm, Rout=49cm (-3.75 < eta < -2.5)
  • Outer: Rin=49cm, Rout=133cm (-2.5 < eta < ~-1.5)

Egamma:

  • Inner: 20 MeV – 20 GeV
  • Outer: 50 MeV – 20 GeV

Energy resolution:

  • Inner: 1%+2.5%/sqrtE + 1%/E
  • Outer: 2%+4%/sqrtE + 2%/E

Spatial resolution: 1+3%/sqrtE

Time resolution:

Typical signal size: <1V

Sampling rate: 250 MHz

Peaking time: ~4ns

Digitization gate: ~(100-200) ns

Signal rate: =<1 MHz/channel

Signal dynamics

  • 2V dynamic range
  • ADC 12 bits (0.4095)
  • ~5 MeV/count
  • ADC threshold: ~15 MeV (3 counts)

Maximum annual dose: ~ 3krad/year (30 Gy/year) EM; 1010 n/cm2 hadronic at top luminosity

Photo Detector: 6x6mm2 SiPM (13360; 25um cell)

Number of channels:

Data sparsification/feature extraction:

  • Peak (amplitude)
  • Integral
  • Time
  • Pedestal
  • Number of samples
  • Pulse quality
  • Pileup detection and recovery


Readout Example JLab:

  • fADC-250 MHz 12 bit, 16 channels/VME slot;
  • 3us buffer;
  • FPGA processing of waveform: zero suppression, pulse integral, max amplitude timing (<1 ns) -> readout;
  • VXS: for L1 trigger or for Streaming Readout
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