Speaker
Clara Lasaosa García
(Universidad de Cantabria and CSIC (ES))
Description
We report on the characterization of 3D columnar-electrode sensors featuring 55 μm-pitch square and hexagonal pixel cells, evaluated with the Two-Photon Absorption Transient Current Technique (TPA-TCT) using the SSD laser facility at CERN. These sensors, manufactured at IMB-CNM, are double-sided n-in-p diodes with a thickness of 285 μm. The study provides detailed maps of the electric field distribution within the pixel cells and examines the time spread between the actual time of arrival and the discriminated time across the pixel cell. The results offer valuable insights for optimizing 3D pixel sensors in applications requiring high precision in both spatial and timing resolution.
Authors
Clara Lasaosa García
(Universidad de Cantabria and CSIC (ES))
Iván Vila Álvarez
Jordi Duarte Campderrós
Marcos Fernández García
