Pulse-processor based on rise time measurement of trapezoidal waveforms by using a count-up ADC

M. Kuwata, H. Maeda, K. Husimi, S. Ohkawa, M. Iwasaki, S. N. Nakamura, T. M. Ito, T. Terada

Research output: Contribution to conferencePaperpeer-review

Abstract

In order to raise the throughput of low-energy x-ray signals appearing in a background of high-energy pulses, a new pulse-processor that measures the rising time of a trapezoidal waveform instead of the peak height has been developed. A rectangular pre-filter and a gated integrator are used to make the wave-shape at the shaper output linear. A rectangular pulse is formed by adding a differential step signal and its integration. The rising time of the trapezoidal waveform is inversely proportional to the height of the input step pulse. Therefore, processing time for a high-energy pulse is shorter than that for low-energy ones. Consequently, the pile-up loss of the low-energy X-rays is reduced.

Original languageEnglish
Pages10-12
Number of pages3
Publication statusPublished - 1995
Externally publishedYes
EventProceedings of the 1995 IEEE Nuclear Science Symposium and Medical Imaging Conference. Part 1 (of 3) - San Francisco, CA, USA
Duration: 1995 Oct 211995 Oct 28

Other

OtherProceedings of the 1995 IEEE Nuclear Science Symposium and Medical Imaging Conference. Part 1 (of 3)
CitySan Francisco, CA, USA
Period95/10/2195/10/28

ASJC Scopus subject areas

  • Radiation
  • Nuclear and High Energy Physics
  • Radiology Nuclear Medicine and imaging

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