A waveform sampling front-end ASIC for readout of GSO/APD with DOI information

J. Y. Yeom, K. Shimazoe, H. Takahashi, H. Murayama

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)


A new 9-channel Waveform Sampling Front-End (WSFE) Application Specific Integrated Circuit (ASIC) for readout of avalanche photodiodes (APD) has been developed based on two prototypes. Each channel of the chip consists of a preamplifier, a variable gain amplifier (VGA) and a fast analog to digital converter (ADC) to digitize signals from the APD. Such a scheme allows individual readouts of small pixellated APD for better spatial resolution and counting rate over conventional light sharing or charge division types while enabling depth-of-interaction (DOI) decoding. Each component has shown satisfactory performance and this chip has been used to readout GSO-APD detector to study its DOI capabilities.

Original languageEnglish
Pages (from-to)381-384
Number of pages4
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Issue number1-2 SPEC. ISS.
Publication statusPublished - 2007 Feb 1
Externally publishedYes


  • ASIC
  • Avalanche Photodiode (APD)
  • Depth-of-interaction (DOI)
  • Positron Emission Tomography (PET)

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation


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