Characterization of neutron- and proton-irradiated LGADs from Teledyne e2v

1 Dec 2022, 11:10
20m
Salón de Grados, 2nd Floor (ETSI Seville)

Salón de Grados, 2nd Floor

ETSI Seville

Escuela Técnica Superior de Ingenieros Camino de los Descubrimientos s/n 41092 Isla de la Cartuja, Sevilla Spain

Speaker

Martin Gazi (University of Oxford (GB))

Description

Exploiting their excellent timing resolution, Low Gain Avalanche Detectors (LGADs) were chosen for next-generation timing detectors at the HL-LHC and other high-energy experiments. When in operation, the detectors will be exposed to high rates of radiation, hence their radiation hardness is one of the key factors to be optimised during detector development. In this talk, we will present results on neutron- and proton-irradiated individual 1x1 mm^2 LGAD sensors produced by Teledyne e2v (Te2v). The development and testing of the sensors is undertaken by the University of Oxford, the University of Birmingham, the Rutherford Appleton Laboratory, and the Open University.

Leakage current and gain-layer depletion voltages up to neutron fluence of 10^16 cm^-2 will be presented alongside timing resolution of proton irradiated and unirradiated individual LGAD devices. Performance of LGAD readout amplifier board developed at the University of Oxford will be shown. We will share first look at large 15x15 LGAD arrays from Batch 2 of wafers manufactures at Te2v together with future plans and tests.

Authors

Daniel Hynds (University of Oxford (GB)) Prof. Daniela Bortoletto (University of Oxford (GB)) Douglas Jordan Enrico Giulio Villani (Science and Technology Facilities Council STFC (GB)) Ioannis Kopsalis (University of Birmingham (GB)) Jonathan Mulvey (University of Birmingham) Dr Konstantin Stefanov (University of Oxford (GB)) Laura Gonella (University of Birmingham (UK)) Martin Gazi (University of Oxford (GB)) Philip Patrick Allport (University of Birmingham (UK)) Richard Plackett (University of Oxford (GB)) Dr Steve Mcmahon (Science and Technology Facilities Council STFC (GB))

Presentation materials