The Experimental Astroparticle Physics Group of Prof. Dr. Björn Penning at the University of Zurich has an open PhD position in cryogenic Dark Matter (DM) searches.

The successful candidate will play a key role in the analysis of data, hardware activities, and preparations for cryogenic DM searches with a focus on TESSERACT. The thesis research may include but is not restricted to: 

• R&D and prototyping with a focus on TESSERACT 
• Simulation, reconstruction and data analysis of cryogenic detectors 
• Statistical interpretation of results 
• Supporting underground operations and data-taking 

We are looking for exceptional candidates who are strongly motivated to pursue a rigorous research program in an inspiring, international environment at the University of Zurich. A master's degree in physics and a solid background in particle or astroparticle physics are required. The ideal candidate will be interested in instrumentation, and data analysis and willing to travel. Enthusiasm to go beyond existing experience is highly valued. 

The group is deeply involved in the TESSERACT experiment, a novel cryogenic DM experiment that will provide leading sensitivity for low mass DM, from an electron volt up to about the mass of a proton. It utilizes state-of-the-art superconducting quantum sensors and a multi-target approach using superfluid helium, sapphire, GaAs and Ge to maximize sensitivity to multiple DM interactions and to identify and discriminate backgrounds. The experiment will be built and operated at the Modane Underground Laboratory. The group is responsible for the detector shielding and is involved in simulation and cryogenic activities. We perform local research on the QROCODILE experiment and in the design and development of quantum sensors such as TESs and SNDPDs. Our group's resources include local dilution refrigerators, micro-manufacturing at FIRST in Zurich, dedicated in-house machine and electronic shops, and test beams at the Paul-Scherrer-Institute. The group further has multiple activities in the LUX-Zeplin and XLZD LXe dark matter experiments. 

Applicants should provide a curriculum vitae, academic transcripts, a research statement, and at least two letters of recommendation uploaded in the application system or by email to the contact listed below. The position can start at the earliest convenience. Proficiency in English is required. PhD positions are fully funded according to Swiss salary requirements, and typically last 3-4 years. For applicants outside the EU, the application is subject to approval from the immigration authorities. The process can last up to three months. For full consideration, completed applications including reference letters should be received by July 31st, 2025. Applications received after that date will be considered until the position is filled. 

Contact information: Prof. Dr. Björn Penning, email: Bjoern.Penning@uzh.ch