Ever wondered how the XENON infrastructure looks like?
The XENON Dark Matter Project is hosted by the INFN Gran Sasso National Laboratory (LNGS). It is the largest underground laboratory with a worldwide research facility where particle physics, cosmology and astrophysics meet. LNGS offers the most advanced underground infrastructures in terms of dimensions, complexity and completeness.
Located between L’Aquila and Teramo, at about 120 km from Rome in central Italy, the underground structures are on one side of the 10 km long highway tunnel which crosses the Gran Sasso massif (towards Rome). The underground complex consists of three huge experimental halls named Hall A, Hall B and Hall C (each 100 m long, 20 m wide and 18 m high). XENON is located in the middle of Hall B shown on the picture on the right.
The 1400 m rock thickness above the Laboratory represents a natural coverage reducing the cosmic ray flux by one million times. Additionally, the neutron flux in Hall A-C is about thousand times lower than on the surface due to the very small amount of uranium and thorium of the Dolomite calcareous rock of the mountain. Both are crucial for the background reduction in our dark matter experiment.
The experiment’s infrastructure can be split into a service building which hosts almost all the xenon handling systems and a water tank that contains three nested detectors: nVeto, µVeto and TPC.
In the surrounding areas outside the water tank we have the main xenon storage system ReStoX-II and a water purification plant that also enables us to mix in Gadolinium sulfate to enhance the nVeto’s effciency.
Explore below and learn more about the specific subsystem buy hovering over the hotspots.