SLIDE 1 Sohail Musa Mahmood
- n behalf of SAMPA team and Norwegian group
SAMPA linearity test results
SAMPAmeeting 11.03.2015
SLIDE 2 Gain and Peaking time
Setup configuration
- Connecting a small capacitance in series
with the input cable.
- Applying an input signal (square wave, ramp
up/down, exponential rise/fall ).
- Connecting the input signal directly to the
detector pads.
- Setting the configuration of the analog chip.
- Observe the differential output at the
corresponding channel.
SLIDE 3
Setup configuration
SLIDE 4 Gain Results
26.80 27.00 27.20 27.40 27.60 27.80 28.00 28.20 28.40 28.60 28.80 29.00 29.20 29.40 29.60 29.80 30.00 30.20 30.40 30.60 30.80 31.00 31.20
30mV/fC@160ns + 30mV/fC@160ns - 30mV/fC@80ns + 30mV/fC@80ns -
30mV/fC
SLIDE 5
Gain Results
SLIDE 6
30mV/fC@160 ns - Linearity
SLIDE 7
20mV/fC@160 ns - Linearity
SLIDE 8
30mV/fC@160 ns (pos) – Linearity – all channels
SLIDE 9
30mV/fC@160 ns (pos) – Linearity – mean value
SLIDE 10
30mV/fC@160 ns (pos)- Linearity INL
SLIDE 11
30mV/fC@160 ns (neg) – Linearity All channels
SLIDE 12
30mV/fC@160 ns – Linearity INL – ALL CHANNELS
SLIDE 13
30mV/fC@160 ns (neg) – Linearity MEAN
SLIDE 14
30mV/fC@160 ns (neg) – Linearity MEAN - INL
SLIDE 15
20mV/fC@160 ns (pos) – Linearity ALL channels
SLIDE 16
20mV/fC@160 ns (pos) – Linearity MEAN
SLIDE 17
20mV/fC@160 ns (pos) – Linearity MEAN - INL
SLIDE 18
20mV/fC@160 ns (neg) – Linearity ALL channels
SLIDE 19
20mV/fC@160 ns (neg) – Linearity MEAN
SLIDE 20
20mV/fC@160 ns (neg) – Linearity MEAN - INL
SLIDE 21 Conclusion
- Linearity seems to be good.
- Some issues with the desired gain.
- More oscillations on channel 1 than other
- channels. (tested 2 chips)
- Some more linearity results for the chip 3
analog part (only for positive configurations)
SLIDE 22 On going work and future plans
- Analysing the results for statistical linearity
measurements.
- Preparing the setup for first irradition tests of
SAMPA MPW1.
- Single-Event Latchup tests on all 3 chips and
Single Event Upset tests on shift registers (chip 3).
- Planning to perform the first irradiation tests
in the end of april in Uppsala (together with RCU2 testing).
SLIDE 23
Thank you for your attention. Any questions ?
