New test beam results of 3D and pad detectors constructed with poly-crystalline CVD diamond

Reichmann, M.; Alexopoulos, A.; Artuso, M.; Bachmair, F.; Bani, L.; Bartosik, M.; Beacham, J.; Beck, H.; Bellini, V.; Belyaev, V.; Bentele, B.; Bes, A.; Brom, J. -M.; Bruzzi, M.; Chiodini, G.; Chren, D.; Cindro, V.; Claus, G.; Collot, J.; Cumalat, J.; Dabrowski, A.; D'Alessandro, R.; Dauvergne, D.; de Boer, W.; Dick, S.; Dorfer, C.; Dunser, M.; Eigen, G.; Eremin, V.; Forcolin, G. T.; Forneris, J.; Gallin-Martel, L.; Gallin-Martel, M. L.; Gan, K. K.; Gastal, M.; Giroletti, C.; Goffe, M.; Goldstein, J.; Golubev, A.; Gorisek, A.; Grigoriev, E.; Grosse-Knetter, J.; Grummer, A.; Gui, B.; Guthoff, M.; Hiti, B.; Hits, D.; Hoeferkamp, M.; Hofmann, T.; Hosselet, J.; Hostachy, J. -Y.; Hugging, F.; Hutton, C.; Janssen, J.; Kagan, H.; Kanxheri, K.; Kasieczka, G.; Kass, R.; Kis, M.; Kramberger, G.; Kuleshov, S.; Lacoste, A.; Lagomarsino, S.; Giudice, A. L.; Paz, I. L.; Lukosi, E.; Maazouzi, C.; Mandic, I.; Marino, A.; Mathieu, C.; Menichelli, M.; Mikuz, M.; Morozzi, A.; Moss, J.; Mountain, R.; Oh, A.; Olivero, P.; Passeri, D.; Pernegger, H.; Perrino, R.; Piccini, M.; Picollo, F.; Pomorski, M.; Potenza, R.; Quadt, A.; Rarbi, F.; Re, A.; Roe, S.; Becerra, D. A. S.; Scaringella, M.; Schmidt, C. J.; Schioppa, E.; Schnetzer, S.; Sciortino, S.; Scorzoni, A.; Seidel, S.; Servoli, L.; Smith, D. S.; Sopko, B.; Sopko, V.; Spagnolo, S.; Spanier, S.; Stenson, K.; Stone, R.; Stugo, B.; Sutera, C.; Tannenwald, B.; Traeger, M.; Trischuk, W.; Tromson, D.; Truccato, M.; Tuve, C.; Velthuis, J.; Venturi, N.; Wagner, S.; Wallny, R.; Wang, J. C.; Weingarten, J.; Weiss, C.; Wermes, N.; Yamouni, M.; Zalieckas, M.; Zavrtanik, M.; Salter, P. S.; Chmeissani, M.; Grinstein, S.; Furelos, D. V.

doi:10.1016/j.nima.2019.162675

Chemical Vapour Deposition (CVD) diamond is being considered as a material for particle detectors in a harsh radiation environment. This article presents beam test results of 3D pixel detectors fabricated with poly-crystalline CVD diamonds. The cells of the devices had a size of 50µm×50µm with columns 2.6µm in diameter. The cells were ganged in a 3×2 and 5×1 pattern to match the layouts of the pixel read-out electronics currently used in the CMS and ATLAS experiments at the Large Hadron Collider, respectively. In beam tests, using tracks reconstructed with a high precision tracking telescope, a tracking efficiency of 99.3% was achieved. The efficiency of both devices plateaus at a bias voltage of 30V. Also irradiated poly-crystalline CVD diamond pad detectors were investigated. In high rate beam tests with particle fluxes up to 20MHz/cm2 and irradiations up to 8 ⋅ 1015n/cm2 it was shown that the pulse height of irradiated poly-crystalline CVD diamonds does not depend on flux to the O2%.