1 / 39

Four Channels Data Acquisition System for Silicon Photomultipliers

Four Channels Data Acquisition System for Silicon Photomultipliers. Mateusz Baszczyk, Piotr Dorosz, Sebastian Głąb , Wojciech Kucewicz, Łukasz Mik, Maria Sapor. Department of Electronics, AGH – University of Science and Technology, Al. Mickiewicza 30, 30-059 Krakow, Poland

chava-snyder
Download Presentation

Four Channels Data Acquisition System for Silicon Photomultipliers

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Four Channels Data Acquisition System for Silicon Photomultipliers Mateusz Baszczyk, Piotr Dorosz, Sebastian Głąb,Wojciech Kucewicz, Łukasz Mik, Maria Sapor Department of Electronics, AGH –University of Science and Technology, Al. Mickiewicza 30, 30-059 Krakow, Poland e-mail kucewicz@agh.edu.pl sglab@agh.edu.pl

  2. Agenda • Fluorescence; • Silicon Photomultiplier description; • Description of previous measurement system; • Four channel data acquisition system; • Results; • Summary; • Future work.

  3. Why do we measure fluorescence light intensity? • Dye-labelled cells can be count by fluorescence light intensity measurement; • At low concentrations the fluorescence intensity is generally proportional to the concentrations of fluorophore.

  4. Fluorescein and Bio-Tek filters spectra fluorescein resorufin

  5. Optical block

  6. Silicon Photomultiplier • The idea appears in the late 90-ties: • „Photon Detection with High Gain Avalanche Photodiode Arrays” S. Vasile, P. Gothoskar, R. Farrell, D. Sdrulla • „Silicon avalanche photodiodes on the base of metal-resistor-semiconductor (MRS) structures” V. Saveliev, V. Golovin

  7. Structure

  8. Current - Voltage Characteristic

  9. Photodiode Operation Mode 1 photon generates 1 electron-hole pair

  10. Avalanche Operation Mode 1 photon generates 10-200 electron-hole pairs

  11. Geiger Operation Mode 1 photon generates 105 - 106 electron-hole pairs

  12. Typical SiPM Parameters

  13. Previous Measurement System For Fluorescence Agilent 33250 generator trigger signal gate pulses Picosecond 2600C generator Cuvette holder with specimen GPA amplifier QDC device PC with Labview application excitation filter emission filter

  14. First Measurement System For Fluorescence

  15. Acquisition System

  16. Acquisition System

  17. Front-end ASIC

  18. Front-end ASIC

  19. Front-end ASIC

  20. Linearity – high gain

  21. Linearity – low gain

  22. Measurement results

  23. Measurement results

  24. Measurement results

  25. Measurement results

  26. Measurement results

  27. Measurement results

  28. Light Intensity

  29. Light Intensity

  30. Light Intensity

  31. Without Coincidence

  32. Coincidence

  33. 61.05 [pg/ml] 976.6 [pg/ml] Results of fluorescence light measurements y=-572500x²+223.6x+6458000 – fluorescein y=-373800 x²+170.3 x +14030000 – resorufin

  34. Influence of Temperature and Bias

  35. Dark Current Rate

  36. Influence of Temperature and Bias

  37. Conclusions • We have designed, built and optimized readout system for detection of single photons; • We have tested readout circuit with light and confirmed that it is linear; • We can distinguish a dozen or so photons and eliminate thermal generation from measurement data; • System with silicon photomultiplier has a good sensitivity and can be used to measure fluorescence light intensity for fluorescein concentration from 1ug/ml to about 60pg/mland resorufin at the level of 1ng/ml up to 1ug/ml.

  38. Future work • Stabilization system compensating temperature influence on SiPM gain by varying supply voltage; • Measurements of fluorescent dyes in microbioreactors. scanning probe micro-bioreactor

  39. Thank you for your attention

More Related