ESS Vacuum System Overview


2023/10/20 10:00 – 11:00


Tsukuba 4th build., 2F, Seminar room 2 + Zoom


Marcelo Juni Ferreira (European Spallation Source)





J. Kamiya (JAEA)、Y. Tanimoto (PHS 4713)、K. Shibata (PHS 4797)


The European Spallation Source (ESS) is a multi-disciplinary research infrastructure neutron source facility based on a 2GeV-5MW proton linear accelerator (LINAC). The goal of ESS is to be the brightest neutron facility and to enable novel science in many fields such as biology research, environmental technologies and fundamental physics. The facility includes Super-conductive Radio-frequency cavities (SRF) to accelerator a proton beam to produce neutron by spallation process on a helium-cooled tungsten wheel, possibility to host 42 neutron instruments. The ESS Vacuum Group has the overall responsibility for all technical vacuum systems used on the Accelerator, Target and Neutron Scattering Instruments (NSS). The team has the responsibility to provide internally or to the in-kind partners, guidance, on-going support and oversight during design, fabrication, installation, commissioning and operation. This allows an integrated approach to be adopted to ensure the implementation of a cost-effective vacuum program from the initial design through procurement and operation.

It will be given an overview of the ESS Vacuum System from the original design and simulations, including the status of the Accelerator, Target and NSS as is Q3-2023. The ESS linear accelerator is under installation, some results of the conditioning at the Normal Conductive LINAC (NCL) up to DTL4. Also, the SRF installation last updates with Linear Warm Units (LWU), and the cryomodules installation. On the Target, the last updates on the monolith vessel leak test including 90% of inner shielding, and NSS instruments installations.

Release date 2023/09/28 Updated 2024/03/02