One of the APD planes of the EXO-200 detector

January 14, 2022
Image Highlights
View of one of the APD planes of the EXO-200 detector as it was being assembled

in 2008. More than 250 silicon avalanche photodiodes are housed in a copper platter and thin cables, kept in place with spring-loaded contacts, fan out the signals. No solder joints nor connectors are used in the entire EXO-200 inner detector.

Credit: The EXO-200 Collaboration