The GTT membrane technology chosen to equip a major international research project, the “Deep Underground Neutrino Experiment”


GTT membrane technology retained for to equip an important international research project, the Deep Underground Neutrino Experiment »

Paris – October 6 2022. GTT announces the awarding of a contract by the Lawrence B.erkeley National Laboratory to support the research work of the project Deep Undergroand Neutrino Experiment1(“DUNE”), under the auspices of the US Department of Energy’s Fermi National Laboratory (“Fermilab”). As part of this contract, GTT is carrying out the engineering and construction studies for the adaptation of its membrane technology inside a cryostat2 designed by the Lawrence BerkeleyNational Laboratory and its partners.

DUNE is a major international research project that aims to better understand neutrinos. The project uses neutrinos produced by the Long-Baseline Neutrino Facility (LBNF)3 from Fermilab, which are then filtered through particle detectors filled with liquid argon. The liquid argon used in this experimental context must be maintained at an extremely stable temperature of -186°C, in an environment guaranteeing, through perfect sealing, the purity of the materials and a high level of thermal insulation.

This new contract follows the contract signed by GTT in 2018 with CERN4on behalf of the LBNF/DUNE-US project5. As part of this previous collaboration, GTT contributed to the final design of the far detector cryostats6. The new contract is for the design of the inner vessel, installed in a hot support structure, for the near detector7.

Philippe Berterottière, President-Ddirector gGeneral of GTT, said : “ This new contract demonstrates the reliability and flexibility of the technologies developed by the GTT group. We are proud to provide technologies capable of meeting the technical and scientific requirements of the DUNE project, and to work with the Lawrence Berkeley National Laboratoryone of the most prestigious national laboratories in the United States. »

Fabrice MatichardChief Engineer for the LBNF/DUNE-US sub-project Near Detector and responsible from the mechanical engineering department of the Lawrence BerkeleyNational Laboratory said : Our collaboration with GTT will provide the membrane technology for the liquid argon detector. The new cryostat designed by GTT will incorporate features such as the ability to move on rails as well as a low-density composite wall to probe neutrinos with the level of precision required by the DUNE project. »

About GTT

GTT is the technological expert in membrane containment systems dedicated to the transport and storage of liquefied gases. For more than 50 years, GTT has been designing and marketing advanced technologies for better energy performance. GTT technologies combine operational efficiency and safety to equip LNG carriers, floating units, onshore tanks, as well as multi-gas transport vessels. The Group also offers systems for using LNG as fuel, as well as a wide range of services, including digital solutions in the field of Smart Shipping. GTT is also present in hydrogen through its subsidiary Elogen, which designs and assembles electrolyzers intended in particular for the production of green hydrogen.

GTT is listed on compartment A of Euronext Paris (ISIN code FR0011726835, Ticker GTT) and is part of the SBF 120 and MSCI Small Cap indices.

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1 More information on the DUNE project:
2A cryostat is a device that keeps the temperature at a very low level. For more information on the cryostats used in the DUNE project:
3 LBNF provides the very large caverns and the cryogenic infrastructure for the DUNE detector in the depths of Sanford Lab.
4 European Council for Nuclear Research.
5 LBNF-DUNE (Long-Baseline Neutrino Facility – Deep Underground Neutrino Experiment): Scientific project aimed at improving the understanding of neutrinos. For more information:
6 Far detector.
7 Near Detector.


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