Hi, I am Elisa Tassan-Din and I am taking this class from Brussels. If you have the chance to come there one day, you should come in summer and go to Bois de la Cambre to have a drink. I am currently doing my master thesis on cosmic rays and their secondary particles interactions with detectors. This is why I think this class could help me to understand these interactions better. I hope to continue to work in high-energy physics.