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Ties Behnke
Experimental Particle Physics
Ties Behnke is Lead Scientist at DESY in the field of experimental particle physics. For many years, he has been working on weak-interaction physics, including measurement of Standard Model parameters with heavy quarks and the development of experimental methods and detectors. He participated in the D0 experiment at the Tevatron proton-antiproton collider at Fermilab and the OPAL experiment at the LEP electron-positron collider at CERN, and led the measurement of electron polarisation at the hadron-electron collider HERA at DESY. He was a member of the TESLA team at DESY, and later worked on the International Linear Collider (ILC). There, he coordinated an international team that proposed a detector concept for an experiment at high-energy electron-positron colliders, the ILD experiment.
Since 2012, he has been the spokesperson of the Helmholtz Programme “Matter and Technologies”, which deals with enabling technologies for the Research Field “Helmholtz Matter” in the area of accelerators, detectors and computing. He was Acting Director of DESY’s Particle Physics Division from January 2021 to February 2022 and took on this role again in April 2025. In his own research, Behnke is interested in electroweak physics and tracking detectors, such as time projection chambers or semiconductor detectors.
Academic career
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Since April 2025
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Acting Director in charge of Particle Physics at DESY
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2021-2022
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Acting Director in charge of Particle Physics at DESY
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2002-2003
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Guest scientist, SLAC, USA
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Since 1998
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Lead Scientist at DESY
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1995-1998
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Tenured Staff Scientist, CERN
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1991-1995
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Postdoc, University of Hamburg and DESY
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1989-1991
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CERN Fellow, OPAL experiment
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1989
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PhD in physics, State University of New York at Stony Brook, USA
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1984
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Master of Arts (Physics), State University of New York at Stony Brook, USA
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1980-1984
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University education at the University of Würzburg and State University of New York at Stony Brook, USA
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Memberships
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Since 2012
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Spokesperson of the programme “Matter and Technology” of the Helmholtz Association
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Since 2008
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Scientific Coordinator of the Helmholtz Alliance “Physics at the Terascale”
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Since 2007
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Spokesperson of the ILD experiment at the International Linear Collider
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2004-2014
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Head of the Scientific Council at DESY
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1999-2007
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Spokesperson of the POL2000 experiment for measuring polarisation at the HERA storage ring at DESY
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Since 1998
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Member of various national and international review committees and advisory boards
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