behalf of SAMPA team and Norwegian group SAMPA linearity test results SAMPAmeeting 11032015 Gain and Peaking time Setup configuration Connecting a small capacitance ID: 801349
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Slide1
Sohail Musa Mahmoodon behalf of SAMPA team and Norwegian group
SAMPA linearity test results
SAMPAmeeting
11.03.2015
Slide2Gain and Peaking timeSetup 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
.
Slide3Setup configuration
Slide4Gain Results
Slide5Gain Results
Slide630mV/fC@160 ns - Linearity
Slide720mV/fC@160 ns - Linearity
Slide830mV/fC@160 ns (pos) – Linearity – all channels
Slide930mV/fC@160 ns (pos) – Linearity – mean value
Slide1030mV/fC@160 ns (pos)- Linearity INL
Slide1130mV/fC@160 ns (neg) – Linearity All
channels
Slide1230mV/fC@160 ns – LinearityINL – ALL CHANNELS
Slide1330mV/fC@160 ns (neg) – LinearityMEAN
Slide1430mV/fC@160 ns (neg) – LinearityMEAN - INL
Slide1520mV/fC@160 ns (pos) – LinearityALL channels
Slide1620mV/fC@160 ns (pos) – LinearityMEAN
Slide1720mV/fC@160 ns (pos) – LinearityMEAN - INL
Slide1820mV/fC@160 ns (neg) – LinearityALL channels
Slide1920mV/fC@160 ns (neg) – LinearityMEAN
Slide2020mV/fC@160 ns (neg) – LinearityMEAN - INL
Slide21ConclusionLinearity seems to be good
.Some issues with the desired
gain
.
More
o
scillations
on
channel
1
than
other
channels
. (
tested
2 chips)
Some
more
linearity
results
for
the
chip 3 analog part (
only
for positive
configurations
)
Slide22On 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).
Slide23Thank you for your attention.Any questions ?