Maastricht
ETpathfinder
The University of Maastricht enlisted Jansen Cleanrooms & Labs to construct a scale model of the Einstein Telescope, a project integral to the ETpathfinder initiative. To meet this challenge, our specialists meticulously designed and built a cutting-edge cleanroom spanning 900 m², certified to ISO-class 8 standards. This state-of-the-art facility stands out not only for its size but also for its advanced technical features, including a vibration-free, anti-static floor, smooth acoustic walls, and a robust air filtration system capable of cycling the air 20 times per hour—an impressive capacity of up to 100,000 m²/hour.
In addition, the cleanroom is equipped with essential elements such as air showers, LAF cabinets, and a comprehensive network of hot and cold piping. To streamline the process and ensure precision, the entire project was modeled using Building Information Modeling (BIM), facilitating efficient preventive maintenance. This development represents a significant milestone for science, providing the tools to simulate gravitational waves and explore the origins and dynamics of the Earth, stars, and planets.
Perhaps most remarkable is the swift execution of this ambitious project: Jansen Cleanrooms & Labs completed the entire process, from initial design to final validation, in just eight months—a testament to exceptional performance and expertise.
It’s all about facts
And figures
The making of
ETpathfinder
This timelampse video captures the incredible journey of constructing ETpathfinder.
Watch as our team of experts brings this ambitious project to life, highlighting the meticulous planning, innovative engineering, and collaborative efforts involved.
A cleanroom that inspires awe and admiration
We now have quite regular visits to the cleanroom from politicans and other stakeholders like the Provinces, and really everyone loves the cleanroom and the atmosphere you designed and created. Really everyone has a big ‘WoW’-moment once they walked up the stairs to the visitor gallery and then turn around and see all the vast ‘whiteness’. 🙂 And we are now gearing up the next highlight, i.e. on the 8th of November the Dutch science minister will stop by for a few hours for having a tour and to conduct the official opening of ETpathfinder … Thanks for all your great help and making this possible!
Stefan Hild – professor of gravity studies at Maastricht University
Voices
Of innovation
Jansen Cleanrooms & Labs contributes to the future of the Einstein Telescope.
Jansen Cleanrooms & Labs contributes to the future of the Einstein Telescope.
About
This project
ETpathfinder is a cutting-edge research and development facility dedicated to advancing the technologies essential for the Einstein Telescope, Europe’s next-generation gravitational wave observatory. Located in Maastricht, ETpathfinder serves as a testing ground for innovative concepts in laser interferometry, cryogenic cooling, and seismic isolation—key components that will enable the Einstein Telescope to detect gravitational waves with unprecedented sensitivity.
The Einstein Telescope is poised to revolutionize our understanding of the universe by capturing gravitational waves from cataclysmic events like merging black holes and neutron stars. These observations will provide unparalleled insights into the fundamental nature of space-time and the origins of the cosmos.
Strategically situated at the ‘tri-border point’—the point where the borders of the Netherlands, Belgium, and Germany converge—the Einstein Telescope symbolizes international collaboration in the pursuit of scientific discovery. This tri-border region offers the geological stability and infrastructure necessary for such a sensitive instrument, making it an ideal candidate for hosting this groundbreaking observatory.
Together, ETpathfinder and the Einstein Telescope represent a bold leap forward in our quest to explore the universe’s most profound mysteries, embodying the spirit of innovation and cooperation that transcends borders.
Pictures: courtesy of etpathfinder.eu






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