SAMPA linearity test results SAMPAmeeting 11.03.2015 Sohail Musa - PowerPoint PPT Presentation

SAMPA linearity test results SAMPAmeeting 11.03.2015 Sohail Musa Mahmood on behalf of SAMPA team and Norwegian group

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.

Setup configuration

Gain Results 30mV/fC 31.20 31.00 30.80 30.60 30.40 30.20 30.00 29.80 29.60 29.40 29.20 29.00 28.80 28.60 28.40 28.20 28.00 27.80 27.60 27.40 27.20 27.00 26.80 30mV/fC@160ns + 30mV/fC@160ns - 30mV/fC@80ns + 30mV/fC@80ns -

Gain Results

30mV/fC@160 ns - Linearity

20mV/fC@160 ns - Linearity

30mV/fC@160 ns (pos) – Linearity – all channels

30mV/fC@160 ns (pos) – Linearity – mean value

30mV/fC@160 ns (pos)- Linearity INL

30mV/fC@160 ns (neg) – Linearity All channels

30mV/fC@160 ns – Linearity INL – ALL CHANNELS

30mV/fC@160 ns (neg) – Linearity MEAN

30mV/fC@160 ns (neg) – Linearity MEAN - INL

20mV/fC@160 ns (pos) – Linearity ALL channels

20mV/fC@160 ns (pos) – Linearity MEAN

20mV/fC@160 ns (pos) – Linearity MEAN - INL

20mV/fC@160 ns (neg) – Linearity ALL channels

20mV/fC@160 ns (neg) – Linearity MEAN

20mV/fC@160 ns (neg) – Linearity MEAN - INL

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)

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).

Thank you for your attention. Any questions ?