Division 5 TECHNICAL SCOPE

Figure 1 below presents a baseline layout of the site to the north-east of the city of Lund, Sweden. The main components of the ESS facility are the accelerator, the target station, the instrument suite and the associated buildings and infrastructure.

In the accelerator, protons are accelerated to an appropriate energy for efficiently driving a spallation reaction. The ESS accelerator is designed for high power and high reliability and uses mainly superconducting cavities.

The target station will convert the proton beam from the accelerator, through the spallation process into a number of intense beams of slow neutrons delivered to the instruments where the research is carried out. The technology chosen for the target is that of a wheel rotating in the proton beam. A moderator-reflector assembly surrounding the target transforms the fast neutrons produced in the spallation process into slow neutrons. These slow neutrons are guided to the instruments.

In the instruments, the neutrons are used to probe the properties of materials in all their diversity and complexity. The long-pulse technique allows the neutron beams to be tailored for each specific instrument and experiment.

The baseline layout for the ESS facility comprised of the accelerator tunnel (orange), the RF gallery (pink), the target station building (red), the experimental halls 1 & 2 (blue) and 3 (green). Also shown are the perimeter of the site (dotted line), the E22 motorway (dark grey) and a possible layout of roads and service buildings (light grey). The origin of the spallation target is at latitude 55,7344° longitude 13,2482° (WGS84).

The Data Management and Software Centre in Copenhagen (DMSC) provides support and services for the management and scientific analysis of the data. The DMSC is also responsible for data curation generated by the ESS suite of instruments as well as providing services to acquire, handle and analyse data and support the simulation of experiments. The DMSC is a fully integrated part of the ESS organisation. DMSC will be a world-class user facility supporting and collaborating with a broad range of scientific and technological users from universities, institutes and industry.

In addition to these components there is an infrastructure of services, supporting laboratories and workshops, offices and amenities for users and staff.