50 years GSI

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FAIR

The new accelerator facility FAIR is under construction at GSI. Learn more.

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GSI is member of

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Funded by

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Branches

HI-JenaHIM

The FAIR mega-construction project

The FAIR particle accelerator facility in Darmstadt is one of the world’s biggest construction projects for international cutting-edge research. On a site of approximately 150,000 m2, a total of 20 buildings are being constructed. Amongst them are an underground accelerator tunnel with 1100 meters circumference and other unique buildings. They are designed in order to house and operate the newly developed high-tech research facilities.

This multinational and highly complex mega-construction project has entailed the development of integrated construction workflow planning that closely coordinates building, civil and construction engineering, accelerator development and construction, and scientific experiments. The construction work began in the summer of 2017.

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Illustration of the future FAIR facility. Scientists from all over the world will conduct cutting-edge experiments at FAIR in order to gain new knowledge about the structure of matter and the evolution of the universe.
Graphic: ion42/FAIR/GSI

Facts and figures on the construction

2 million cubic meters of earth

...to be excavated — as much as for 5,000 single-family homes

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600,000 cubic meters of concrete

...to be used — as much as eight Frankfurt soccer stadiums

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65,000 tons of steel

...to be utilized — as much as for nine Eiffel Towers

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Complex buildings

Plans call for 20 accelerator and experimental structures, laboratories, and other operational and supply structures to be built on a total area of approximately 150,000 square meters. Some of the building structures reach from 17 meters below ground level to 20 meters above the earth's surface and contain up to six floors.

The transfer building is the most complex building of the facility. It is the central hub of the facility’s beam guidance system. The 1100 meter long tunnel for the SIS100 particle accelerator will also be located up to 17 meters underground. It is being built by means of the cut-and-cover construction method. In this process, the construction pit “moves” — in other words, the construction takes place in sections that are about 200 meters long. A supply tunnel will be located next to the actual accelerator tunnel. Here there will be room for structures such as the lines for power and liquid helium, power supply units, and possible devices for controlling the quality of the ion beam.

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Cross section of the ring tunnel facility (40 m wide) for the SIS100 accelerator. Inside of the left rectangular tunnel the accelerator is located. In the right part of the tunnel the supply facilities are placed.
Section of the transfer building with several beamlines.
Graphic: FAIR/GSI
Graphic: FAIR/GSI

Video on the construction cycle (8 min)

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