Johan Dieperink (1940 - 2015)

We were deeply saddened to learn of the death of our former colleague and friend, Johan Dieperink, on 28 August, at the age of 75.


Han arrived at CERN in 1969, hired as an electronics technician to work on the data acquisition system for the “Charpak” multiwire chambers. In the 1970s, Han joined the SPS Beam Instrumentation Group and participated in the development of an analog acquisition system for the SEM type beam monitors used in the beam transfer lines towards the North and West experimental areas. In the 1980s, he joined the Beam Transfer Group, working on the development, construction and operation of the low-level control system for the LEP’s beam separation system and on the modernisation of the control system for the SPS extraction channels. In the 1990s, Han devoted himself to the design study for the control system for the LHC beam extraction system. Many of the ideas and suggestions that Han put forward in the course of these studies are now a reality and contribute to the good performance of this system, which is crucial to the operation of the LHC.

Han was always highly appreciated by his colleagues and by all those who had the chance to work with him, not only for his expertise in his field, his composure and his commitment, but also for his open nature, his willingness and the friendship he showed all of us. We send our deepest sympathy to his family and our sincere condolences to his wife. 

His former colleagues and friends​