View
215
Download
2
Category
Preview:
Citation preview
1G.Pessina, RICH Elec Upg, 11 April 2010
Analog Channels per chip 4 to 8
Digital channel per chip 4 to 8
Wire-bond pitch (input channels)
Input capacitance on channel 1 -2 pF
Input resistance < 50
AC or DC coupling to sensor? DC
Maximum leakage current per channel
<1 – 10 nA
Noise < 50 KelRMS (TOF option)< 100 KelRMS (no TOF)
Maximum crosstalk < 1 – 2 %
Signal polarity of input signal Negative
Signal polarity of output signal Positive (not so stringent)
Dynamic range (input charge) < 10 Mel (PMT)< 4 Mel (MCP)
Linearity < 5 %
Power consumption per channel
total
< 3 mW (very front-end)< 8 mW (very front-end,
shaper and discriminator)
Specifications for PMT/MCP readout (I)
2G.Pessina, RICH Elec Upg, 11 April 2010
Specifications for PMT/MCP readout (II)
Pre-amp peaking time < 2 ns
Pre-amp rise time < 0.5 ns
Pre-amp recovery time < 10 ns
Shaper peaking time 5 – 10 ns
Shaper recovery time 25 – 50 ns
Pulse spill-over ???
Gain 25 mV/Mel (Selectable with 2 bits)
Total ionizing radiation dose
Die size
Packaging for Analog DIL
Packaging for Digital PLCC
Readout scheme (analog, digital, binary)
Digital: ADC bits 6 - 8
Input range
ADC sampling rate
ADC power consumption/channel
Binary: Threshold range
Threshold Uniformity
Timewalk
3G.Pessina, RICH Elec Upg, 11 April 2010
Specifications for PMT/MCP readout (III)
Questions:
Which acquisition philosophy:
Trigger or trigger-less?
Analog or binary?
Analog and binary (namely analog just for diagnostic, then digital in running)?
4G.Pessina, RICH Elec Upg, 11 April 2010
Specifications for HPD with external readout (I)
Analog Channels per chip 8 to 16
Digital channel per chip 8 to 16
Wire-bond pitch (input channels)
Input capacitance on channel 1 -2 pF
AC or DC coupling to sensor? DC
Maximum leakage current per channel
<1 – 10 pA
Noise < 200 elRMS (TOF option) <400 elRMS (no TOF)
Maximum crosstalk < 0.5 – 1 %
Signal polarity of input signal Positive
Signal polarity of output signal Positive (not so stringent)
Dynamic range (input charge) < 30 Kel
Linearity < 1 %
Power consumption per channel total
< 3 mW (very front-end)< 8 mW (very front-end, shaper and discriminator)
5G.Pessina, RICH Elec Upg, 11 April 2010
Specifications for HPD with external readout (II)
Pre-amp peaking time < 2 ns
Pre-amp rise time < 0.5 ns
Pre-amp recovery time < 10 ns
Shaper peaking time 5 – 10 ns
Shaper recovery time 25 – 50 ns
Pulse spill-over ???
Gain 10 mV/Kel
Total ionising radiation dose
Die size
Packaging for Analog DIL
Packaging for Digital PLCC
Readout scheme (analog, digital, binary)
Digital: ADC bits 8 - 10
Input range
ADC sampling rate
ADC power consumption/channel
Binary: Threshold range
Threshold Uniformity
Timewalk
6G.Pessina, RICH Elec Upg, 11 April 2010
Specifications for HPD with external readout (III)
Same questions as before:
Which acquisition philosophy:
Trigger or trigger-less?
Analog or binary?
Analog and binary (namely analog just for diagnostic, then digital in running)?
Recommended