Mosaic diamond detectors for fast neutrons and large ionizing radiation fields

Marco Girolami, Alessandro Bellucci, Paolo Calvani, Carlo Cazzaniga, Marica Rebai, Davide Rigamonti, Marco Tardocchi, Mario Pillon, Daniele M. Trucchi

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23 Citations (Scopus)

Abstract

First neutron and X-ray beam tests on a novel 12-pixel single-crystal diamond mosaic detector are presented and discussed. Preliminary characterization of single-pixel electronic properties, performed with α particles, results in charge carrier mobilities >2000 cm2Vs−1and saturation velocities of the order of 107cm s−1. Signal stability over time, measured with a241Am source (37 kBq activity), is longer than 5 h. Tests under an intense X-ray beam (1 Gy h−1dose-rate) show a very good response uniformity (down to about 1% of relative standard deviation from mean value), suggesting a high level of pixel reproducibility at intermediate bias voltages (ranging from 20 to 100 V). Response uniformity reduces at voltages >200 V, due presumably to radiation-assisted detrapping effects. Preliminary results of 12-pixel simultaneous acquisitions of X-ray beam profiles and pulse height spectra under a fast neutron beam (14 MeV) are also presented.
Original languageEnglish
Pages (from-to)2424 - 2430
Number of pages7
JournalPhysica Status Solidi (A) Applications and Materials Science
Volume212
Issue number11
DOIs
Publication statusPublished - 1 Nov 2015
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Electrical and Electronic Engineering
  • Materials Chemistry

Cite this

Girolami, M., Bellucci, A., Calvani, P., Cazzaniga, C., Rebai, M., Rigamonti, D., Tardocchi, M., Pillon, M., & Trucchi, D. M. (2015). Mosaic diamond detectors for fast neutrons and large ionizing radiation fields. Physica Status Solidi (A) Applications and Materials Science, 212(11), 2424 - 2430. https://doi.org/10.1002/pssa.201532191