Scientific Results

Polycrystalline diamond detectors with three-dimensional electrodes

Year: 2015

Authors: Lagomarsino S., Bellini M., Brianzi M., Carzino R., Cindro V., Corsi C., Morozzi A., Passeri D., Sciortino S., Servoli L.

Autors Affiliation: University of Florence, Department of Physics, Via Sansone 1, 50019 Sesto Fiorentino, Italy;
INFN Firenze, Via B. Rossi 1, 50019 Sesto Fiorentino, Italy;
INO CNR Firenze, Largo E. Fermi 6, Firenze, Italy;
Smart Materials-Nanophysics, Istituto Italiano di Tecnologia, Genova Via Morego 30, 16163 Genova, Italy;
Joseph Stefan Institute ,Jamova Cesta 39, Ljubljana 1000, Slovenia;
LENS Firenze, Via Nello Carrrara 1, 50019 Sesto Fiorentino, Italy
INFN Perugia, Perugia, Italy
Università di Perugia, Dipartimento di Ingnegneria, Via G. Duranti 93, 06125 Perugia, Italy

Abstract: The three-dimensional concept in diamond detectors has been applied, so far, to high quality singlecrystal material, in order to test this technology in the best available conditions. However, its application to polycrystalline chemical vapor deposited diamond could be desirable for two reasons: first, the short inter-electrode distance of three-dimensional detectors should improve the intrinsically lower collection efficiency of polycrystalline diamond, and second, at high levels of radiation damage the performances of the poly-crystal material are not expected to be much lower than those of the single crystal one. We report on the fabrication and test of three-dimensional polycrystalline diamond detectors with several inter-electrode distances, and we demonstrate that their collection efficiency is equal or higher than that obtained with conventional planar detectors fabricated with the same material. (C) 2015 Elsevier B.V. All rights reserved.

Journal/Review: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT

Volume: 796      Pages from: 42  to: 46

More Information: This research was partially funded by EU (HadronPhysics3 project No. 283286) and GSI (Detector Technology and Systems Platform). We would like to thank Dr. Vincenzo Greco and Andrea Sordini of INDCNR (Florence) for their invaluable support in performing optical profilometry on our samples.
KeyWords: Electrodes; Radiation damage; Single crystals, Chemical vapor deposited diamond; Collection efficiency; Diamond detectors; Electrode distances; High quality single crystals; Polycrystalline diamond detectors; Polycrystalline diamonds; Three-dimensional electrode, Diamonds
DOI: 10.1016/j.nima.2015.03.041

Citations: 5
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