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Performance tests of ERNE HED sensor

  • Authors: Valtonen, E.; Peltonen, J.; Eronen, T.; Torsti, J. J.; Lumme, M.; Mahonen, M.; Nieminen, A.; Viano, J. B.
  • Publication: Proceedings of the 25th Annual Conference of the Finnish Physical Society 1 p (SEE N92-10362 01-70), 1991
  • ERNE instrumentation
  • ADS link
  • Abstract: The Energetic and Relativistic Nuclear and Electron (ERNE) experiment will investigate the Sun from onboard the Solar and Heliospheric Observatory (SOHO) by measuring the composition and energy spectra of energetic ions from hydrogen up to nickel and by detecting electrons. A preliminary test run has been carried out to estimate the light yield in CsI(Tl) and BGO scintillators by different ions. The prototype of HED, a sensor designed to combine a good mass resolution with a large geometric factor to overcome the problem of low intensity of rare elements, was tested in an accelerator run by using a calcium beam at 35 MeV/n. The beam energy was sufficient for producing light elements penetrating through all the silicon detectors and reaching the CsI(Tl) scintillator. First results were obtained of the identification capabilities of relatively high energy ions. Results of the analysis are presented.

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