A 3D diamond detector for particle tracking

F. Bachmair (1) , L. Bäni (1) , P. Bergonzo (2) , B. Caylar (2) , G. Forcolin (3) , I. Haughton (3) , D. Hits (1) , H. Kagan (4) , R. Kass (4) , L. Li (3) , A. Oh (3) , S. Phan (4) , M. Pomorski (2) , D. Smith (4) , V. Tyzhnevyi (3) , R. Wallny (1) , D. Whitehead (3)

1 ETH Zürich - Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology [Zürich]
2 LCD (CEA, LIST) - Laboratoire Capteurs Diamant (CEA, LIST)
3 University of Manchester [Manchester]
4 OSU - Ohio State University [Columbus]

A novel device using single-crystal chemical vapour deposited diamond and resistive electrodes in the bulk forming a 3D diamond detector is presented. The electrodes of the device were fabricated with laser assisted phase change of diamond into a combination of diamond-like carbon, amorphous carbon and graphite. The connections to the electrodes of the device were made using a photo-lithographic process. The electrical and particle detection properties of the device were investigated. A prototype detector system consisting of the 3D device connected to a multi-channel readout was successfully tested with 120 GeV protons proving the feasibility of the 3D diamond detector concept for particle tracking applications for the first time.

Mots clés: CVD diamond; Particle detector; 3D detector; Graphitisation; Graphitic miao-channels; Laser processing

Domaines: Micro et nanotechnologies/Microélectronique; Matériaux

F. Bachmair, L. Bäni, P. Bergonzo, B. Caylar, G. Forcolin, et al.. A 3D diamond detector for particle tracking. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2015, 786, pp.97 - 104. ⟨10.1016/j.nima.2015.03.033⟩. ⟨hal-01864050⟩