Test pulses with data concentrator Kees Ligtenberg Lepcol meeting - - PowerPoint PPT Presentation

Test pulses with data concentrator

Kees Ligtenberg

Lepcol meeting

September 7, 2020

Kees Ligtenberg (Nikhef) Test pulses September 7, 2020 1 / 6

Digital test pulse

50 100 150 200 250 Column number 50 100 150 200 250 Row number

hitmap_chip8 Entries 1600 Mean x 96 Mean y 96 Std Dev x 71.55 Std Dev y 71.55

10 20 30 40 50 60 70 80 90 100

hitmap_chip8 Entries 1600 Mean x 96 Mean y 96 Std Dev x 71.55 Std Dev y 71.55

Hitmap

100 test pulses per pixel, and all in data

Kees Ligtenberg (Nikhef) Test pulses September 7, 2020 2 / 6

Analog test pulse

50 100 150 200 250 Column number 50 100 150 200 250 Row number hitmap_chip8 Entries 3204 Mean x 95.96 Mean y 95.92 Std Dev x 71.55 Std Dev y 71.55 20 40 60 80 100 120 140 160 180 200 hitmap_chip8 Entries 3204 Mean x 95.96 Mean y 95.92 Std Dev x 71.55 Std Dev y 71.55

Hitmap

About 2 hits per test pulse (one pulse, and one after pulse), which is normal for this IKRUM setting

Kees Ligtenberg (Nikhef) Test pulses September 7, 2020 3 / 6

Time over threshold of analog test pulse

tothis_chip8 Entries 3204 Mean 62.92 Std Dev 26.56 20 40 60 80 100 25 ns] × Time over threshold [ 20 40 60 80 100 120 140 tothis_chip8 Entries 3204 Mean 62.92 Std Dev 26.56

Time over threshold histogram

The time over threshold should be low for this tpf, and there should be some distribution

Kees Ligtenberg (Nikhef) Test pulses September 7, 2020 4 / 6

DAQ of noise

Chip 8 and 9

50 100 150 200 250 Column number 50 100 150 200 250 Row number hitmap_chip8

Entries 3930830 Mean x 33.45 Mean y 143.2 Std Dev x 32.79 Std Dev y 76.81

200 400 600 800 1000 1200

3

10 × hitmap_chip8

Entries 3930830 Mean x 33.45 Mean y 143.2 Std Dev x 32.79 Std Dev y 76.81

Hitmap

50 100 150 200 250 Column number 50 100 150 200 250 Row number hitmap_chip9

Entries 86931 Mean x 131.8 Mean y 132.6 Std Dev x 72.09 Std Dev y 72.33

1000 2000 3000 4000 5000 6000 7000 hitmap_chip9

Entries 86931 Mean x 131.8 Mean y 132.6 Std Dev x 72.09 Std Dev y 72.33

Hitmap

A strange pattern appears?

Kees Ligtenberg (Nikhef) Test pulses September 7, 2020 5 / 6

ToT of noise with normal DAQ

tothis_chip8

Entries 3930830 Mean 29.12 Std Dev 23.88

20 40 60 80 100 25 ns] × Time over threshold [ 10000 20000 30000 40000 50000 60000

tothis_chip8

Entries 3930830 Mean 29.12 Std Dev 23.88

Time over threshold histogram

Kees Ligtenberg (Nikhef) Test pulses September 7, 2020 6 / 6