Radiation hardness studies of CdTe and Hgl2 for the SIXS particle detector on-board the BepiColombo spacecraft

J. Ahoranta, J. Huovelin, Minttu Uunila, H. Andersson, R. Vainio, A. Virtanen, H. Kettunen

Tutkimustuotos: LehtiartikkeliArticleScientificvertaisarvioitu

1 Sitaatiot (Scopus)

Abstrakti

We report of the radiation hardness measurements that were performed in the developing work of a particle detector on-board ESA's forthcoming BepiColombo spacecraft. Two different high-Z semiconductor compounds, cadmium telluride (CdTe) and mercuric iodide (HgI2), were irradiated with 22 MeV protons in four steps to attain the estimated total dose of 1012 p / cm2 for the mission time. The performance of the detectors was studied before and after every irradiation with radioactive 55Fe source Mn Kα 5.9 keV emission line. We studied the impact of the proton beam exposure on detector leakage current, energy resolution and charge collection efficiency (CCE). Also the reconstructive effect of annealing on radiation induced damage was tested for CdTe detector.
AlkuperäiskieliEnglanti
Sivut344-349
Sivumäärä6
JulkaisuNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Vuosikerta605
Numero3
DOI - pysyväislinkit
TilaJulkaistu - 2009
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

Tutkimusalat

  • BepiColombo
  • CdTe
  • Charge collection efficiency
  • Energy resolution
  • HgI2
  • Leakage current

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