The Collaboration
We just started this effort, so we are always looking for new interested parties to join our efforts.
The GravNet project was iniated in 2023 with founding partners at INFN Frascati (Italy), IFAE/ICREA Barcelona (Spain), the Johannes Gutenberg University in Mainz (Germany) and the Rheinische Friedrich-Wilhelms-University of Bonn (Germany). If you are interested in joing our efforts towards the hunt of high frequency gravitational waves, do not hesitate write an email to Matthias Schott (University of Bonn).
INFN Frascati: Dr. Claudio Gatti
The COLD laboratory (CryOgenic Laboratory for Detectors) recently setup at the LNF in Frascati hosts experimental research and technological activities ranging from the characterization of cryogenic devices such as normal and superconducting resonant cavities, to the R&D for characterization of single photon detectors, in particular Josephson Junctions, and Multi-harmonic magnetic susceptibility measurement. It hosts also the FINUDA magnet which is an iron shielded solenoid coil with a radius of 1.4m and a length of 2.2 m. It is made from an aluminium-stabilised niobium titanium superconductor. The magnet provides a homogeneous axial field of strength up to 1.1T. This large volume allows for the installation of one large cavity with a relatively low resonance frequency of 270 MHz.
Contact: Claudio Gatti (Email: claudio.gatti@lnf.infn.it)
University of Mainz: Prof. Dr. Dima Budker and Dr. Kristof Schmieden
The University of Mainz possesses a commercial fast-ramping superconducting solenoid from CRYOGENIC LTD, featuring a central field of up to 14 T and a length of 20 cm. The bore has a diameter of 8.9 cm. It will accommodate three cavities with a dominant resonance frequency of 7.69 GHz. The dominant resonance frequency of a cavity corresponds to the mode with the highest coupling to the GW. This magnet system is already in operation and used for R&D efforts of cavity design and operation as well as first data-taking efforts in the context of the SUPAX-Experiment. The Mainz team is supported by Malavika Unni, Yuzhe Zhang, Hendrik Bekker, and Arne Wickenbrock.
Contact: Kristof Schmieden (Email: kschmied@uni-mainz.de)
University of Bonn: Prof. Dr. Matthias Schott
The University of Bonn is currently in the process of acquiring a commercial superconducting magnet, also offering a central field of 14 T. This magnet will a cylindrical magnetic volume with a diameter of 11 cm and a height of 25 cm, which will host three cavities with a dominant resonance frequency of 5.43 GHz and two cavities with a dominant resonance frequency of 7.69 GHz. The magnet will be located in a special laboratory, shown in the picture, at the new Forschungs- und Technologiezentrum Detektorphysik (FTD). It will also host the next generation of the SUPAX-Experiment.
Contact: Matthias Schott (Email: mschott@uni-bonn.de)
IFAE/ICREA Barcelona: Prof. Dr. Diego Blas
The developments on the signal modelling of high frequency gravitational waves, which are crucial to the data-analysis as well as the actual optimisation of the experimental layout, are conducted mainly at IFAE Barcelona under the leadership of the ICREA Professor Diego Blas.
Contact: Diego Blas (Email: dblas@ifae.es)