Proprieties of FBK UFSDs after neutron and proton irradiation up to 6*10e15 neq/cm2

S. M. Mazza; E. Estrada; Z. Galloway; C. Gee; A. Goto; Z. Luce; F. McKinney-Martinez; R. Rodriguez; H. F. -W. Sadrozinski; A. Seiden; B. Smithers; Y. Zhao; V. Cindro; G. Kramberger; I. Mandić; M. Mikuž; M. Zavrtanik R. Arcidiacono; N. Cartiglia; M. Ferrero; M. Mandurrino; V. Sola; A. Staiano; M. Boscardin; G. F. Della Betta; F. Ficorella; L. Pancheri; G. Paternoster

doi:10.1088/1748-0221/15/04/t04008

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arXiv · 1804.05449

Proprieties of FBK UFSDs after neutron and proton irradiation up to 6*10e15 neq/cm2

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Abstract

The properties of 60-μm thick Ultra-Fast Silicon Detectors (UFSD) detectors manufactured by Fondazione Bruno Kessler (FBK), Trento (Italy) were tested before and after irradiation with minimum ionizing particles (MIPs) from a 90Sr \b{eta}-source . This FBK production, called UFSD2, has UFSDs with gain layer made of Boron, Boron low-diffusion, Gallium, Carbonated Boron and Carbonated. The irradiation with neutrons took place at the TRIGA reactor in Ljubljana, while the proton irradiation took place at CERN SPS. The sensors were exposed to a neutron fluence of 4*10e14, 8*1014, 1.5*10e15, 3*10e15, 6*10e15 neq/cm2 and to a proton fluence of 9.6*10e14 p/cm2, equivalent to a fluence of 6*10e14 neq/cm2. The internal gain and the timing resolution were measured as a function of bias voltage at -20C. The timing resolution was extracted from the time difference with a second calibrated UFSD in coincidence, using the constant fraction method for both.

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S. M. Mazza, E. Estrada, Z. Galloway, C. Gee, A. Goto, Z. Luce, F. McKinney-Martinez, R. Rodriguez, H. F. -W. Sadrozinski, A. Seiden, B. Smithers, Y. Zhao, V. Cindro, G. Kramberger, I. Mandić, M. Mikuž, M. Zavrtanik R. Arcidiacono, N. Cartiglia, M. Ferrero, M. Mandurrino, V. Sola, A. Staiano, M. Boscardin, G. F. Della Betta, F. Ficorella, L. Pancheri, G. Paternoster. 2020-03-19. Proprieties of FBK UFSDs after neutron and proton irradiation up to 6*10e15 neq/cm2. https://doi.org/10.1088/1748-0221%2F15%2F04%2Ft04008

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