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

Research output: Contribution to journalArticle

23 Citations (Scopus)


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
Issue number11
Publication statusPublished - 1 Nov 2015
Externally publishedYes


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.