Ivor Fleck has worked at many of the large facilities for particle physics, namely DESY, CERN, KEK and Fermilab. He started working on detectors for particle physics during his PhD on the construction and installation of the ZEUS experiment at DESY. He was awarded a JSPS scholarship to continue his work at the University of Tokyo and was selected as a CERN Fellow afterwards to work on the OPAL experiment. As a next step he went to the University of Freiburg, where he received his habilitation and has been working on the construction of the calibration system for the muon detector of the ATLAS experiment. He was appointed as Professor of Physics in the year 2005. In the year 2008 he received the teaching award of the Faculty of Physics. His current projects in detector development are a time projection chamber for a future linear collider and recently he started a project on medical imaging.
Currently he is associate Dean for Research of the School of Science and Technology at University of Siegen and Founding Chairman of the Center for Particle Physics Siegen.
Claus Grupen is a retired professor of Universität Siegen. He studied mathematics and physics at the University of Kiel, Germany. In 1196 he got the degree of a high school teacher, in 1970 the Ph.D. in physics with research work on ’Electromagnetic Interactions of Cosmic Ray Muons’, University of Kiel. In 1971/1972 he was a Visiting Fellow of the Royal Society of England, University of Durham and had there a cooperation with Sir Arnold Wolfendale (later Astronomer Royal) on cosmic ray physics. He served as spokesperson of a cosmic ray experiment (muon spectra, charge ratio and interactions of muons) at DESY, Hamburg 1972 - 1973. In 1975 he got the Habilitation at the University of Siegen in physics with a thesis on ’Electromagnetic Interactions of High Energy Cosmic Ray Muons’. Since 1975 he has the function of Radiation Officer at Siegen University and is Honorary consultant for the Siegen fire brigade in matters of ’Radiation Safety´. He was a member of the PLUTO-experiment at DESY working on DORIS and PETRA (1974 - 1987) on Electron-Positron Interactions. He became supernumerary professor of physics at Siegen University in 1978 and full professor at Siegen in 1981.
He was awarded the Special High Energy and Particle price for the discovery of the gluon in 1979 and 1995 (jointly with members of the JADE, Mark J, PLUTO and TASSO Collaborations).
He was appointed dean of the physics department at Siegen University in 1980/81, 1991-1993 and 2002-2006.
He worked as visiting professor at the University of Tokyo 1981 and 1985, doing cosmic ray work with Prof. Dr. Takashi Kitamura. He is a member of the ALEPH-Experiment (Electron-Positron Interactions at the world largest e+e- Collider LEP) at CERN (1984 - now), member of the Cosmo ALEPH-Experiment (Underground muon physics with the ALEPH detector at CERN; 1990 - now), member of the KASCADE-Grande and LOPES experiments at the Forschungszentrum Karlsruhe (KIT - Karlsruhe Institute of Technology; 2005 - now), Paid Associate at CERN 1990, 1994, and 2000 working on ALEPH.
He was Director of the ’Research Institute for Humanities and Social Science’ at Siegen University 1999 - 2001. He retiredin September 2006.
Irene Buvat got the Bachelor of Physics cum laude in 1988 ＂Magistère Interuniversitaire de Physique＂, at the Ecole Normale Supérieure ULM Paris, France. In 1989 she graduated in Nuclear Physics, cum laude, Paris XI University, Orsay, France. In 1992 she got the PhD in Nuclear Physics: ＂Scatter correction in scintigraphy＂ cum laude, Paris XI University, Orsay, France. In 1989-1992 she was research fellow with Robert Di Paola, U66 INSERM, Institut Gustave Roussy, Villejuif, France.
In 1993-1994 she was a Research fellow with Andrew Todd-Pokropek, Department of Medical Physics and Bio-engineering, University College London, UK, 1995-1996 research fellow at the Department of Nuclear Medicine, National Institutes of Health, Bethesda, MD, 1996-2001 Research Scientist CNRS (Centre National de la Recherche Scientifique), INSERM Laboratory of Functional Imaging, Paris, 2002-2005 Research Scientist CNRS (Centre National de la Recherche Scientifique), INSERM Laboratory of Functional Imaging, Paris, Head of the ＂Quantitative imaging of radiotracers＂ research group.
In 2006-2007 she was director of research CNRS (Centre National de la Recherche Scientifique), INSERM Laboratory of Functional Imaging, Paris, Head of the ＂Quantitative imaging of radiotracers＂, 2008-now Director of Research CNRS (Centre National de la Recherche Scientifique), CNRS Laboratory of ＂Imaging and Modeling in Neurobiology and Cancerology＂, Orsay, France, Head of the ＂Quantitative molecular imaging＂.
She got the following awards: 2009 Rotblat medal awarded by the Editorial Board of ＂Physics in Medicine and Biology＂ for the citations prize to the authors of the original research paper that has received the most citations in the preceding five years (according to the Institute for Scientific Information). Awarded article: GATE: a simulation toolkit for PET and SPECT, Jan et al, Phys. Med. Biol. 49 4543-61, 2004. 2002: Bronze medal awarded by the CNRS for outstanding accomplishments in medical imaging.