Scientific Results

Radiation hardness of three-dimensional polycrystalline diamond detectors

Year: 2015

Authors: Lagomarsino S., Bellini M., Corsi C., Cindro V., Kanxheri K., Morozzi A., Passeri D., Servoli L., Schmidt C.J., Sciortino S.

Autors Affiliation: National Institute of Nuclear Physics (INFN), Via B. Rossi, 1-3, Sesto Fiorentino (FI), 50019, Italy; Department of Physics and Astronomy, University of Florence, Via G. Sansone 1, Sesto Fiorentino (FI), 50019, Italy; European Laboratory for Non-Linear Spectroscopy, Via Nello Carrara 1, Sesto Fiorentino (FI), 50019, Italy; Istituto Nazionale di Ottica (INO-CNR), Largo Enrico Fermi 6, Firenze (FI), 50125, Italy; Jozef Stefan Institute, Jamova cesta 39, Ljubljana, 1000, Slovenia; National Institute of Nuclear Physics (INFN), Via A. Pascoli, Perugia (PG), 06123, Italy; Department of Physics, University of Perugia, Via A. Pascoli, Perugia (PG), 06123, Italy; Department of Engineering, University of Perugia, Via G. Duranti 93, Perugia (PG), 06125, Italy; GSI Helmholtzzentrum für Schwerionenforschung, Planckstraße 1, Darmstadt, 64291, Germany

Abstract: The three-dimensional concept in particle detection is based on the fabrication of columnar electrodes perpendicular to the surface of a solid state radiation sensor. It permits to improve the radiation resistance characteristics of a material by lowering the necessary bias voltage and shortening the charge carrier path inside the material. If applied to a long-recognized exceptionally radiation-hard material like diamond, this concept promises to pave the way to the realization of detectors of unprecedented performances. We fabricated conventional and three-dimensional polycrystalline diamond detectors, and tested them before and after neutron damage up to 1.2 x 10(16) cm(-2), 1 MeV-equivalent neutron fluence. We found that the signal collected by the three-dimensional detectors is up to three times higher than that of the conventional planar ones, at the highest neutron damage ever experimented. (C) 2015 AIP Publishing LLC.

Journal/Review: APPLIED PHYSICS LETTERS

Volume: 106 (19)      Pages from: 193509  to: 193509

More Information: This research was funded by the European Union (HadronPhysics3 Project No. 283286), the GSI (Darmstadt) within the frame of the \”Detector technology and systems platform\” of the Helmoltz association, and the National Institute of Nuclear Physics (INFN), Italy, in the frame of the experiment 3D_SOD. We would like to thank Mirko Brianzi of INFN and Vincenzo Greco, Mauro Pucci, Andrea Sordini of INO-CNR (Florence) for their invaluable technical support in the preparation and characterization of the diamond samples.
KeyWords: Hardness; Neutrons, Neutron damage; Neutron fluences; Particle detection; Polycrystalline diamond detectors; Radiation hard; Radiation hardness; Radiation resistance; Radiation sensors, Diamonds
DOI: 10.1063/1.4921116

Citations: 19
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