Conveners
C4Or1B - Large Scale Refrigeration and Liquefaction II
- Ryuji Maekawa (ITER Organization)
- Jay Theilacker (Fermilab)
CERN operates and maintains several large cryogenic systems including those serving the LHC complex and its associated detectors, together with cryogenic Test Facilities and distribution services. Outsourcing of Operation and Maintenance to an industrial partner was implemented in 2016. It allows the cryogenics group to activate different level of services starting from basic technical support...
In the framework of a world-wide international collaboration, the FCC-hh, a 100 TeV hadron collider in a 100-km long tunnel, is proposed as a future circular collider beyond LHC at CERN offering the broadest discovery potential at the energy frontier.
For such high performance hadron collider, the cryogenic system has to distribute very large cooling capacities all along the 100-km tunnel for...
The Large Hadron Collider (LHC) operates using superfluid helium provided by eight large refrigeration units (2.4 kW @ 1.8 K each). These units supplied by specialized cryogenic industrial suppliers are composed of serial hydrodynamic cold compressors based on an axial-centrifugal impeller coupled with volumetric warm screw compressors.
The process control systems delivered by the suppliers...
The accelerator cryoplant (ACCP) providing the cooling for the cryomodules and the cryogenic distribution system for the cold part of the ESS proton linac is being built and commissioned at the European Spallation Source (ESS) in Lund, Sweden. The ACCP warm compressor system (WCS) consists of several compression stages. The sub-atmospheric pressure stage (SP) is used to compress helium coming...
RAON is a heavy-ion accelerator under construction by IBS (Institute for Basic Science) in Daejon in South-Korea. The aim of the project is to explore the origins of chemical elements, to study new isotopes and to perform research on applied medical and new materials using rare isotopes. For the second linear accelerator (LINAC), a cryogenic plant of 4 kW @ 2.05K will be necessary to maintain...
The ITER Cryodistribution (CD) system distributes cryogenic cold power equivalent to 75 kW at 4.5 K and 1300 kW at 80 K, from the cryoplant to the applications, namely superconducting magnets, cryopumps etc. The Cryoplant Termination Cold Box (CTCB), which is the largest CD cold box, interconnects 3 liquid helium (LHe) plants, two 80 K helium plants, 1 LHe tank at one end, and 5 auxiliary cold...
The development of Turbo-Brayton technology started in 2007 with the goal to provide efficient and reliable solution for the cooling of HTS cable. Since then, several units have been manufactured, tested and operated for many different applications, as the temperature range covered by the technology is very wide, ranging from 20K to 200K. In August 2018, the first operation of a Turbo-Brayton...
