CPAD 2019 in Madison Wisconsin

Low Gain Avalanche Detectors: Towards Higher Granularity and Repetition Rate

Not scheduled

20m

Monona Terrace Convention Center

Talk Solid State Tracking Detectors

Speaker

Prof. Bruce Schumm (UC Santa Cruz)

Description

In a broad array of fields, including particle physics (4-D tracking) and photon science (X-ray imaging), ultra-fast sensors are a promising R&D path. Low-Gain Avalanche Detectors (LGADs) are a promising recent development to provide the precise timing and/or high frame rate required by next-generation facilities. However, due to structures required to provided electrostatic isolation between LGAD pixels, the granularity of production-level devices is limited to the 1x1 mm^2 scale, while a number of important applications in particle physics and photon science demand granularity scales of 100x100 um^2 or better. In this talk, we'll present the status of several independent approaches to improving the granularity of LGAD sensors. The talk will conclude with the results of a calculation, performed both in closed form and MC simulation, of the advantage provided by LGADs relative to conventional diode sensors as a function of signal repetition rate, motivating LGAD R&D in pursuit of frame rates as high as 10 GHz.