Speaker
赵祥
Description
Severe pileup exists at the High-Luminosity LHC. The ETL of CMS MTD adopts LGAD sensors to deliver high-precision timing. Reliable characterization of LGAD sensors is necessary for the ETL upgrade. At USTC, we have built a complete LGAD characterization platform based on probe-station I-V and C-V measurements, equipped with a 16×16 probe card and custom switch matrix board, capable of I-V and C-V measurements for all 256 channels for full-array testing. This characterization system evaluates key LGAD parameters such as breakdown voltage and depletion voltage uniformity, which has contributed to the qualification of CMS ETL LGADs.
