Daikin supplies R1234ze chillers to Large Hadron Collider
13th February 2022
SWITZERLAND: Daikin has supplied two air-cooled chiller units running on low GWP HFO refrigerant R1234ze to CERN, the European Organisation for Nuclear Research, for the Large Hadron Collider (LHC).
The two EWAH-TZ chillers with a total cooling capacity of 1312kW were for linear accelerator 4, also known as Linac4. This unit is designed to boost negative hydrogen ions to high energies and has been the source of proton beams for the Large Hadron Collider (LHC) since 2020.
The most powerful particle accelerator ever built, the LHC sits in a tunnel 100m underground on the Franco-Swiss border near Geneva, Switzerland.
Daikin has been a partner for the CERN lab since 2012 providing, commissioning and maintaining a number of screw inverter, centrifugal and scroll chiller chillers with a total cooling capacity of over 31MW.
Linac4 is 86m long and located 12m below ground. Beams began to be produced in 2013 and the milestone energy of 160 MeV was reached in 2016, after the commissioning of all the accelerating structures. Linac4 replaced Linac2 (which had previously accelerated protons to 50 MeV) during the long shutdown of 2019–20.
Daikin chillers are also used in CERN’s facilities to provide cooling for data centres, but also for projects such as the ISOLDE experiment, and for the air conditioning systems of the underground tunnel which house the Large Hadron Collider.
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