Christian Ohm

I'm a researcher in experimental particle physics, meaning I study the smallest building blocks of matter and the forces through which they interact. I'm interested in solving the shortcomings of the Standard Model of particle physics, and in particular searching for particles that can make up the Dark Matter that dominates our universe.

My main research activities are within the ATLAS experiment at CERN's Large Hadron Collider (LHC). My current main responsibilities within the experiment include:

• Convener of the Common Dark Matter group which coordinates the strategy and interpretations of the results of searches for particles that can make up the Dark Matter in our universe. 
• Organize analyses searching for physics beyond the Standard Model with long-lived particles giving rise to displaced decay vertices O(1-100) mm from the primary interaction (in the Supersymmetry group, since 2016). 
• Developing a new precision timing detector, the High-Granularity Timing Detector, to be installed as part of the ATLAS experiment in time for the start-up of High-Luminosity LHC in 2026. This detector will measure charged particles with a time resolution of a few 10s of trillionths of a second (30 picoseconds). I was the editor of both the Expression of Interest and Technical Proposal which the LHCC based it's decision to approve the project on in the summer of 2018.  

As more experiments at the LHC are trying to create and measure particles that can make up the Dark Matter, and many other types of experiments try to measure the Dark Matter that exists around us without us noticing, the LHC Dark Matter Working Group helps coordinate the experimental efforts and facilitate communication and collaboration between the various communities, including theorists developing models that propose explanations for the Dark Matter. Since Oct 2018 I'm one of the conveners of this group.

During 2019 I was appointed a member of the Young Academy of Sweden until 2024. Locally in Sweden I organize the working group for Beyond-SM physics at the Oskar Klein Centre in Stockholm and I'm a member of the board for the Elementary Particle Physics and Astroparticle Physics section of the Swedish Physical Society.

I'm currently based in Stockholm, but between 2006-2017 I spent around 85% of my time at CERN. During 2014-2017 I was employed by Berkeley Lab and before that I was a Research Fellow at CERN. I defended my PhD thesis at Stockholm University in 2011.

During 2018-2021 my research is funded by a grant from the Swedish Research Council.

If you are interested to hear more about particle physics research in general or what we do in the ATLAS experiment in particular, don't hesitate to contact me!