Author: Riva, M.
Paper Title Page
TUPHA072 Real-Time Liquid Scintillator Calibration Based on Intensity Modulated LED 575
  • F. Pollastrone, M. Riva
    ENEA C.R. Frascati, Frascati (Roma), Italy
  • G.C. Cardarilli
    Università degli Studi di Roma "Tor Vergata", Roma, Italy
  In many nuclear applications such as nuclear/high-energy physics and nuclear fusion, sensors are widely used in order to detect high energy particles. One of the available technologies is the scintillator, which is generally coupled with a photomultiplier and pulse amplifier. The detector acquisition chain is not stationary; mainly, it changes its gain as a function of the temperature and the nuclear irradiation on the photomultiplier; therefore it needs to be periodically calibrated during its operation. A calibration method reported in the literature is based on the use of a pulsed LED that flashes on the photomultiplier by generating a train of reference pulses. A new technique may be the use of an LED with continuous sinusoidal intensity emission. This provides as an output of the detector chain a small sinusoidal signal which can be digitally processed in real time, by measuring the gain and the delay time of the detector chain. Moreover, this sinusoidal background signal can be removed in real-time, before any processing or storage of data. This paper presents the technique, reporting its simulation and the main characteristics of the developed firmware and the hardware.  
poster icon Poster TUPHA072 [7.081 MB]  
DOI • reference for this paper ※  
Export • reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)