by Gde Bimananda Mahardika Wisna. Published: 15 September 2014

I am Gde Bimananda Mahardika Wisna, an undergraduate student of Engineering Physics at Institut Teknologi Bandung, Indonesia. My dream of visiting CERN dates back to April 2013. One of my colleagues was accepted at CERN’s Summer Student Programme 2013 and I thought that I could also have this experience in 2014! I decided to apply for CERN’s Summer Students Programme and imagined myself working at CERN. In April 2014 I received the acceptance letter and that's when my dream started becoming true.

I was placed at the ALICE Experiment, working on the High Momentum Particle Identification Detector (HMPID) and supervised by Antonello Di Mauro, who taught me a lot about HMPID. My work was strongly related to material science because Cherenkov radiation produced by high momentum particles is detected with the photoelectric effect using Cesium Iodide thin films coated on a substrate. I also learned how to produce thin films using evaporation chamber. I had to investigate the dependency of some substrates to the Quantum Efficiency of Cesium Iodide.

I attended most of the lectures and specially enjoyed the fact that physics lectures were given by some of the world’s top experts. The lectures that were harder to follow were those about accelerators, detector electronics and medical physics. I also attended workshops, tutorials and seminars. Visits to the underground detectors were amazing. ATLAS, ALICE and CMS are very complex detectors and it was so cool to be there! I also saw some facilities like ISOLDE, Anti-Proton Decelerator and Computer Centre. I also had the chance to visit new places, learn a lot about different cultures and make new friends from different countries. I spent my weekends travelling with friends to Geneva, Lyon, Bern, Zurich, Lausanne, Paris and Berlin! One of the coolest things was hithchiking to Lyon! These are experiences that I will never forget. I hope that one day I could visit CERN again.