Essay: Robert H. Siemann—a great scientist, teacher, mentor, and friend: From LEP and SLC to advanced accelerators

Ralph W. Aßmann^*,†
CERN, Geneva, Switzerland

^*ralph.assmann@cern.ch

^†Ralph Aßmann is a Senior Physicist at the European Organization for Nuclear Research (CERN). He earned a diploma in physics in 1991 and a Ph. D. in physics in 1994 from the Ludwigs-Maximilians-Universität, supported by research grants from the Max-Planck-Institut für Physik, Werner-Heisenberg-Institut, in Munich, Germany. He was research associate and staff member at the Stanford Linear Accelerator Center SLAC from 1994 to 1998. Since 1998 he is at CERN, working on the Large Electron Lepton Collider (LEP), the Compact Linear Collider (CLIC), and the Large Hadron Collider (LHC). His present research is in the areas of high intensity hadron beams and the design and construction of high power collimation systems.