1. Design, fabrication, and preliminary test results of a new inverse-LGAD for soft X-ray detection.
- Author
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Segal, Julie, Kenney, Christopher, Koybasi, Ozhan, Kok, Angela, and Povoli, Marco
- Subjects
- *
X-ray detection , *SOFT X rays , *PARTICLE physics , *LIGHT sources , *X-ray imaging , *APPROPRIATE technology - Abstract
The Low Gain Avalanche Detector (LGAD) is a promising technology for soft X-ray imaging at the next generation light sources as well as for particle tracking applications in high energy physics experiments. However, the lack of a thin entrance window is a limiting factor for deploying LGADs in some applications. In order to exploit the unique scientific imaging opportunities at the new XFELs, finely segmented detectors that can detect soft X-rays with energies as low as 30 eV are needed. The sensors must be able to provide an internal gain of ∼10 to amplify the generated small signal to be above the noise floor of the readout electronics and must have an extremely shallow entrance window to allow the absorption of soft X-rays in the active volume of the sensor. In 2020, we proposed a novel thin entrance window LGAD device concept. We have now produced the first wafer run. We will describe the design and simulation of the new device, as well as test results. Bench test measurements on single-pixel test structures show gain of 7 for shallow absorption. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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