Bulletin of the American Physical Society
90th Annual Meeting of the Southeastern Section of the APS
Thursday–Saturday, November 9–11, 2023; Eastern Kentucky University, Richmond, Kentucky
Session N01: Instrumentation
8:30 AM–9:48 AM,
Saturday, November 11, 2023
Keen Johnson
Room: South Room
Chair: Frank Gonzalez, ORNL
Abstract: N01.00004 : Diffused trenches for high fill-factor Low-Gain Avalanche Diodes*
9:24 AM–9:36 AM
Presenter:
Christopher Platte
(Vanderbilt University)
Authors:
Christopher Platte
(Vanderbilt University)
Gabriele Giacomini
(Brookhaven National Laboratory)
Collaboration:
Dr. Gabriele Giacomini
Low-Gain Avalanche Diodes (LGADs) are a class of silicon detectors that have been specifically designed for the fast detection of minimum ionizing particles (mips) in High-Energy Physics experiments. While they provide timing resolution on the order of a few tens of picoseconds, they cannot achieve high spatial resolution due to the intrinsic characteristics of their construction. Thus, active R&D is ongoing to develop detectors based on LGADs to improve their spatial resolution while maintaining their timing performance. The devices that will be discussed are AC-coupled LGADs and Deep-Junction LGADs and how their performance compares with Trench-Isolated LGADs (TI LGADs), a design in which trenches are etched at the periphery of the pixels to isolate them while providing a high fill-factor. In this presentation, details on a variation of this latter approach will be provided, demonstrating its feasibility by means of 2-dimensional Technology Computer-Aided Design (TCAD) simulations.
*The U.S. Department of Energy, Office of Science, Office of Workforce Development for Teachers and Scientists (WDTS) under the Science Undergraduate Laboratory Internships Program (SULI).
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