Etpathfinder is a R&D research facility funded by Interreg Vlaanderen-Nederland and located in Maastricht.

Aim of the project

Next generation gravitational wave detectors, like ET, will introduce a number of new technologies never used before in such kind of detectors and for which a preliminary study and testing is then necessary.

Etpathfinder aims to test some of these new technologies. Specifically, it will be focused on developing prototype and testing:

  • Cryogenic temperatures (120K and 15K)
  • New mirror material (Silicon)
  • New laser wavelength (1550nm and 2100nm)
  • Advanced quantum noise reduction techniques
Ghent contribution

Ghent University is one of the founding partners of ETpathfinder (additional information can be found here).

The Ghent Gravity Group is involved in its realisation for the following aspects:

  • Vacuum system construction
  • Design and construction of parts of the Suspension System prototype
  • Developing and testing photodetectors for 2µm wavelength
  • Developing of the Output Mode Cleaner for 2µm wavelength

Advanced Virgo

Advanced Virgo is an interferometric gravitational wave detector located in Cascina, near Pisa, in Italy.

Ghent contribution

Ghent University is a member of the Virgo Collaboration as part of the BelGrav Group.

The Ghent Gravity Group is involved in Advanced Virgo instrumentation work for the following:

  • Data analysis and characterization of the phase camera