Speaker
Description
The Hamamatsu ORCA2 C11090-22B is a EM-CCD camera working with visible light, able to perform Ultra-Low Light Imaging. In this contribution, we will show how such a camera can be employed to study the breakdown of Silicon detectors by looking at their "hot spots", namely regions of a device that emit visible photons because of the high current densities flowing through them. We performed measurements on LGADs with different design strategies of the inter-pad region, aiming to reduce the size of the no-gain area between pads. The camera allows determining those parts of the structures where a high density of current concentrates, helping us understand the cause of sensor's premature breakdown. This visualization is a very good tool to pinpoint design choices that might lead to unwanted sensors' characteristics
