Implementation of 3D-architectures in diamond detectors promises to achieve unreached performances in the radiation-harsh environment of future high-energy physics experiments. This work reports on the collection efficiency under b-irradiation of graphitic 3D-electrodes, created by laser pulses in the domains of nanoseconds (ns-made-sensors) and femtoseconds (fs-made- sensors). Full collection is achieved with the fs-made-sensors, while a loss of 25%–30% is found for the ns-made-sensors. The peculiar behaviour of ns-made sensors has been explained by the presence of a nano-structured sp3-carbon layer around the graphitic electrodes, evidenced by micro-Raman imaging, by means of a numerical model of the charge transport near the electrodes.

Three-dimensional diamond detectors: Charge collection efficiency of graphitic electrodes / Stefano Lagomarsino; Marco Bellini; Chiara Corsi;Federico Gorelli;Giuliano Parrini;Mario Santoro;Silvio Sciortino. - In: APPLIED PHYSICS LETTERS. - ISSN 0003-6951. - STAMPA. - 103:(2013), pp. 233507-1-233507-4. [10.1063/1.4839555]

Three-dimensional diamond detectors: Charge collection efficiency of graphitic electrodes

LAGOMARSINO, STEFANO;CORSI, CHIARA;GORELLI, FEDERICO AIACE;SCIORTINO, SILVIO
2013

Abstract

Implementation of 3D-architectures in diamond detectors promises to achieve unreached performances in the radiation-harsh environment of future high-energy physics experiments. This work reports on the collection efficiency under b-irradiation of graphitic 3D-electrodes, created by laser pulses in the domains of nanoseconds (ns-made-sensors) and femtoseconds (fs-made- sensors). Full collection is achieved with the fs-made-sensors, while a loss of 25%–30% is found for the ns-made-sensors. The peculiar behaviour of ns-made sensors has been explained by the presence of a nano-structured sp3-carbon layer around the graphitic electrodes, evidenced by micro-Raman imaging, by means of a numerical model of the charge transport near the electrodes.
2013
103
233507-1
233507-4
Stefano Lagomarsino; Marco Bellini; Chiara Corsi;Federico Gorelli;Giuliano Parrini;Mario Santoro;Silvio Sciortino
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Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/847297
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