Difference between revisions of "OVERVIEW OF SPECIFICATIONS"

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(Created page with "'''EEEMCal Design Requirements''' '''Coverage: -4 < eta < ~-1''' :* Inner: Rin=15cm, Rout=49cm (-3.75 < eta < -2.5) *: Outer: Rin=49cm, Rout=133cm (-2.5 < eta < ~-1.5) '''E...")
 
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'''EEEMCal Design Requirements'''
 
'''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
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:* Weight: ~5000kg
 +
 +
'''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; 10um cell)
 +
 +
Number of channels:
 +
 +
'''Data sparsification/feature extraction:'''
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:* 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NUMBERS FROM 2021 DETECTOR PROPOSAL DEVELOPMENT - SUPERSEDED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'''  
 
'''Coverage: -4 < eta < ~-1'''  

Revision as of 14:44, 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

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; 10um cell)

Number of channels:

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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