Claudio Tuniz earned his doctorate in Physics in 1974 at the University of Trieste, Italy, where he carried out research in nuclear physics and its applications from 1974 to 1990.
He was post-doctoral fellow at Rutgers University in New Jersey, USA, from 1981 to 1983, becoming involved in pioneering applications of cosmogenic radionuclides to understand the cosmic record in meteorites and lunar rocks. From 1984 to 1990, he promoted accelerator mass spectrometry (AMS) and cosmogenic radionuclide dating at the Italian Institute of Nuclear Physics and at the University of Trieste. During this period he carried out experimental activities at several laboratories in Europe, USA and Australia.
He moved to Australia in 1991, following an invitation by the Australian government to lead the AMS group at the Lucas Heights Research Laboratories in Sydney. The world class AMS centre developed under his leadership carried out research programs in global climate change, Antarctic research, nuclear safeguards, biomedicine and archaeology. Later he become director of the Physics Division at Lucas Heights Research Laboratories (1996-1999) and coordinated a broad spectrum of inter-disciplinary research based on the use of ions, neutrons and synchrotron radiation. Tuniz was Counselor for science policy matters at the Australian Permanent Mission to the United Nations Organizations in Vienna between 1999 and 2004.
Tuniz served as Chairman of the Executive Committee for the Australian Program on Synchrotron Radiation Research, Chairman of the Neutron Scattering Committee for the Australian Replacement Reactor, Co-Chairman of the Australasian Archaeometry Conference, Co-Chairman of the International Conference on Accelerator Mass Spectrometry. He is fellow of the Australian Institute of Physics, member of the Italian Physical Society and of the Italian Association of Archaeometry.
He is author and co-author of over 100 international journal and conference publications, including two books and several book chapters, mainly in the interdisciplinary studies based on the use of ion accelerators in environmental studies, biomedicine, materials science and archaeology.
Tuniz started his work at ICTP in 2004 as Special Advisor to the Director. He is presently Assistant Director and Head of the ICTP Multidisciplinary Laboratory. Currently his main field of interest is the use of advanced physics methods in palaeoanthropology and human evolution.