Short Description
The Marietta Blau Institute's dilution fridge provides a thermal environment of approximately 100 mK (close to absolute zero at -273.15°C) for physics experiments. The equipment and laboratory are operated by the two research groups Rare Event Searches and Precision Experiments to test dark matter detectors and provide ultracold hydrogen, respectively.
Contact Person
Martin Simon
Research Services
Low temperature environment down to approximately 100mK for physical experiments.
Methods & Expertise for Research Infrastructure
Application of the Rare Event Search Group: Low temperatures in the range of 100 mK are required to operate so-called transition-edge sensors. In these sensors, a detector element is operated in the thermal transition region between superconductivity and normal electrical conduction. When a single particle strikes the detector element, it causes heating and correspondingly strong signals that can be further processed. Expertise lies in detector development and characterization, signal readout and processing, as well as a detailed understanding of the statistical and systematic effects.
Application of the Precision Experiments Group: Atomic hydrogen is generated in-situ by dissociation and thermalizes on the walls of cold transfer lines that pass through magnetic field gradients. The cold atomic hydrogen emerging from the lines can be shaped into a directed beam using mirror elements coated with superfluid helium. This beam is used for precise spectroscopy or gravity measurements. Expertise lies in the generation and manipulation of ultracold hydrogen.
Terms of use will be defined by then.
COSINUS
NUCLEUS
GRASIAN