Avalanche photodiodes operating parameter optimization for the Frascati Tokamak Upgrade Thomson scattering system

F. Orsitto, A. Brusadin, E. Giovannozzi

Research output: Contribution to journalArticle

3 Citations (Scopus)


Measured figures (linearity, avalanche gain, frequency response, and noise) of the avalanche photodiodes (APD) detectors used on the FTU Thomson scattering system (FTU-TS) are reported. This investigation on the APD figures is motivated by the necessity of knowing their values over a wide range of input signals, and also of checking the validity of McIntyre model of APD noise, since using this model the experimental signal-to-noise ratio is calculated. From the noise analysis, a method of optimization of the detection system sensitivity is derived, leading to the optimization of the signal-to-noise ratio over the entire FTU-TS system. © 1997 American Institute of Physics.
Original languageEnglish
Pages (from-to)1201 - 1216
Number of pages16
JournalReview of Scientific Instruments
Issue number2
Publication statusPublished - Feb 1997
Externally publishedYes


All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)
  • Instrumentation

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