Speaker
Alessandro Fassina
Description
See the full Abstract at http://ocs.ciemat.es/EPS2018ABS/pdf/P5.1004.pdf
Characterization of MPPC coupled organic scintillator for RFP SXR
spectra detection.
A.Fassina, P.Franz
Consorzio RFX, Corso Stati Uniti 4, 35127 Padova, Italy
The detailed characterization of electron distribution function in RFPs is crucial in order to
understand energy transfer between particle and magnetic field and to better understand the
dynamo mechanism. SXR emission spectra is in principle able to return line-integrated
informations on the electron energy distribution with a time resolution high enough (ms order)
to discriminate different phases between Dynamo Reconnection Events (DRE); in order to do
so, SXR detectors have to be operated in Pulse Height Analysis mode.
This work present a characterization of organic scintillators coupled to MPPC (Multi Pixel
Photon Counters) in terms of noise, energy cutoff, time response and recovery and linearity in
an energy range of 1-10 keV. The scintillators (Scionix EL256) are manufactured in 3x3x50
mm rods with reflective coating, and they are coupled on the small side to a 1x1 and to a 3x3
mm Hamamatsu MPPC detector. The expected performances in the measurement of RFP
plasma spectra in different plasma conditions is briefly discussed.
