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VFE electronics for SiPM Dubna 29.01.2004

VFE electronics for SiPM Dubna 29.01.2004. Valery Jejer Viatcheslav Slepnev Igor Tyapkin Sergei Basylev. LAL chip. Version #1 (modified) – 12mv/fQ Input capacitor reduced to 1pF Dynamic range 100mv (input signal) We need factor 10. Version #2 of LAL chip may work.

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VFE electronics for SiPM Dubna 29.01.2004

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  1. VFE electronics for SiPM Dubna 29.01.2004 Valery Jejer Viatcheslav Slepnev Igor Tyapkin Sergei Basylev

  2. LAL chip • Version #1 (modified) – 12mv/fQ • Input capacitor reduced to 1pF • Dynamic range 100mv (input signal) • We need factor 10. • Version #2 of LAL chip may work. • To test it we will need new PCB!?

  3. Direct digitization -E 10 kOhm FPGA SiPM ADC 100 MHz 10 bit Amp. Data 470 Ohm 51 Ohm

  4. 2-3 PE Kamp.=10 E=38.8 v

  5. 5 PE 241,7 13,9

  6. 20 PE 360,8 21,7 Self trigger -180 Integral over 50 nsec

  7. ~70 PE

  8. ~9ch/PE 2-3 PE No light Vsipm=0 Self trigger

  9. ~5 PE Kamp.=1

  10. ~20 PE Kamp.=1

  11. ~50 PE

  12. 0 pe 7 pe 20 pe 50 pe 0 pe 154,4 1,1 7 pe 159,1 1,2 25% 20 pe 170,2 1,7 7,5% 50 pe 188,7 2.5 7,3%

  13. RC 30 sec

  14. 0 154,2 0,7 10 pe 161,3 0,8 11,3% 40 pe 170,9 1,2 7,1% 80pe 187,2 1,7 5,1%

  15. 50 MHz

  16. 0 154,6 0,9 10 pe 166,7 1,6 13% 40 pe 184,2 2,2 7,4% 80pe 213,1 2,4 4,1% 0 153,3 0,8 10 pe 164,3 1,7 15% 40 pe 180,2 2,4 9,3% 80pe 212,1 2,5 4,2%

  17. FPGA ADC 100 MHz 10 bit Amp. Direct digitization 100 MHz, 10 bit 2 6 2 10 50 MHz, 8 bit 2 3 1,5 6,5 50 MHz, 8 bit 3 1,5 4,5

  18. Semi DHCAL 80 pe 10 pe

  19. 0 5 10 20 40 80 pe

  20. Measurement of a pulse duration -E 10 kOhm FPGA SiPM Amp. Data 470 Ohm 51 Ohm

  21. 0 10 20 40

  22. 40 10

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