Readout electronics and data acquisition of a positron emission tomography time-of-flight detector module with waveform digitizer

Jungyeol Yeom, Ruud Vinke, Virginia Ch Spanoudaki, Key Jo Hong, Craig S. Levin

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

A multi-element silicon photomultiplier (SiPM) based time-of-flight (ToF) detector module for positron emission tomography (PET) has been developed. The detector module is based on a 4 \times 4 array of LYSO-SiPM elements (Hamamatsu MPPC S10931-050P), with individual bias supply for each element. Each element is read out by a wideband, low-noise RF amplifier to maximize timing performance. All 16 outputs are digitized with a high-speed CAEN V1742 digitizer module (32 2 channels, 5 GS/s sampling, 12-bit amplitude resolution, 500 MHz input bandwidth) to acquire raw pulse waveforms for offline timing and energy extraction. As the digitizer has no internal trigger for individual channels, a trigger board has been developed which produces a fast pulse that triggers the digitizer whenever any pixel of the detector detects a signal in coincidence with a reference detector. To assess the performance of the prototype module, a 4 \times 4 LYSO scintillator array (3\times 3\times 5\ {\rm mm}3 elements) was coupled to the SiPM photodetectors and energy/timing resolution measurements were performed using a Ge-68 source. At 1.4 V overvoltage, the energy resolution, not corrected for saturation effects of the SiPM, varied from a minimum of 10.1% to a maximum of 13.3% with an average energy resolution of 11.4 \pm 0.8% across the 16 channels. With a reference detector (single 3\times 3\times 5\ {\rm mm}3 LYSO crystal coupled to a Hamamatsu MPPC S10362-33), the average coincidence resolving time (CRT) across the detector module was 206 \pm 7 ps FWHM at 2.4 V overvoltage-the best reported for a PET block (array) detector based on conventional photodetectors to date.

Original languageEnglish
Article number6544698
Pages (from-to)3735-3741
Number of pages7
JournalIEEE Transactions on Nuclear Science
Volume60
Issue number5
DOIs
Publication statusPublished - 2013 Oct 25
Externally publishedYes

Fingerprint

Positron emission tomography
analog to digital converters
data acquisition
readout
positrons
Data acquisition
acquisition
waveforms
Electronic equipment
tomography
modules
Detectors
Photomultipliers
detectors
electronics
Silicon
overvoltage
actuators
time measurement
silicon

Keywords

  • Data acquisition
  • front-end electronics
  • PET
  • silicon photomultipliers
  • waveform digitizer

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Nuclear Energy and Engineering
  • Electrical and Electronic Engineering

Cite this

Readout electronics and data acquisition of a positron emission tomography time-of-flight detector module with waveform digitizer. / Yeom, Jungyeol; Vinke, Ruud; Spanoudaki, Virginia Ch; Hong, Key Jo; Levin, Craig S.

In: IEEE Transactions on Nuclear Science, Vol. 60, No. 5, 6544698, 25.10.2013, p. 3735-3741.

Research output: Contribution to journalArticle

Yeom, Jungyeol ; Vinke, Ruud ; Spanoudaki, Virginia Ch ; Hong, Key Jo ; Levin, Craig S. / Readout electronics and data acquisition of a positron emission tomography time-of-flight detector module with waveform digitizer. In: IEEE Transactions on Nuclear Science. 2013 ; Vol. 60, No. 5. pp. 3735-3741.
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abstract = "A multi-element silicon photomultiplier (SiPM) based time-of-flight (ToF) detector module for positron emission tomography (PET) has been developed. The detector module is based on a 4 \times 4 array of LYSO-SiPM elements (Hamamatsu MPPC S10931-050P), with individual bias supply for each element. Each element is read out by a wideband, low-noise RF amplifier to maximize timing performance. All 16 outputs are digitized with a high-speed CAEN V1742 digitizer module (32 2 channels, 5 GS/s sampling, 12-bit amplitude resolution, 500 MHz input bandwidth) to acquire raw pulse waveforms for offline timing and energy extraction. As the digitizer has no internal trigger for individual channels, a trigger board has been developed which produces a fast pulse that triggers the digitizer whenever any pixel of the detector detects a signal in coincidence with a reference detector. To assess the performance of the prototype module, a 4 \times 4 LYSO scintillator array (3\times 3\times 5\ {\rm mm}3 elements) was coupled to the SiPM photodetectors and energy/timing resolution measurements were performed using a Ge-68 source. At 1.4 V overvoltage, the energy resolution, not corrected for saturation effects of the SiPM, varied from a minimum of 10.1{\%} to a maximum of 13.3{\%} with an average energy resolution of 11.4 \pm 0.8{\%} across the 16 channels. With a reference detector (single 3\times 3\times 5\ {\rm mm}3 LYSO crystal coupled to a Hamamatsu MPPC S10362-33), the average coincidence resolving time (CRT) across the detector module was 206 \pm 7 ps FWHM at 2.4 V overvoltage-the best reported for a PET block (array) detector based on conventional photodetectors to date.",
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