Radiation hardness of three-dimensional polycrystalline diamond detectors

Journal Article · Mon May 11 00:00:00 EDT 2015 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4921116· OSTI ID:22399065

Lagomarsino, Stefano; Sciortino, Silvio ^[1]; Bellini, Marco ^[2]; Corsi, Chiara ^[3]; Cindro, Vladimir ^[4]; Kanxheri, Keida; Servoli, Leonello ^[5]; Morozzi, Arianna ^[6]; Passeri, Daniele ^[5]; Schmidt, Christian J. ^[7]

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1. National Institute of Nuclear Physics (INFN), Via B. Rossi, 1-3, 50019 Sesto Fiorentino (Italy)
2. European Laboratory for Non-Linear Spectroscopy, Via Nello Carrara 1, 50019 Sesto Fiorentino (Italy)
3. Department of Physics and Astronomy, University of Florence, Via G. Sansone 1, 50019 Sesto Fiorentino (Italy)
4. Jozef Stefan Institute, Jamova cesta 39, 1000 Ljubljana (Slovenia)
5. National Institute of Nuclear Physics (INFN), Via A. Pascoli, 06123 Perugia (Italy)
6. Department of Engineering, University of Perugia, Via G. Duranti 93, 06125 Perugia (Italy)
7. GSI Helmholtzzentrum für Schwerionenforschung, Planckstraße 1, 64291 Darmstadt (Germany)

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 ×10{sup 16 }cm{sup −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.

• OSTI ID: 22399065
• Journal Information: Applied Physics Letters, Vol. 106, Issue 19; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
CHARGE CARRIERS
DIAMONDS
ELECTRIC POTENTIAL
ELECTRODES
FABRICATION
MEV RANGE
NEUTRON FLUENCE
PHYSICAL RADIATION EFFECTS
POLYCRYSTALS
RADIATION DETECTORS
RADIATION HARDNESS
SENSORS
SOLIDS
SURFACES
THREE-DIMENSIONAL LATTICES