Conceptual design of the ESS-SCANDINAVIA

The con­cep­tu­al de­sign of the Eu­ro­pean Spal­la­tion Source-Scan­di­navia (ESS-S) is pre­sent­ed. The ac­cel­er­a­tor sys­tem base­line draws heav­i­ly on state-of-the-art ma­ture tech­nolo­gies that are being em­ployed in the CERN Linac4 and SPL pro­jects, al­though ad­vances with spoke res­onator and sput­tered su­per­con­duct­ing cav­i­ties are also being eval­u­at­ed for re­li­able per­for­mance. Ir­ra­di­a­tion dam­age due to pro­ton beam loss­es is a key issue for linac and tar­get com­po­nents. Their op­ti­mized de­sign is per­formed from an en­gi­neer­ing per­spec­tive, using the last up­dat­ed ver­sions of me­chan­i­cal de­sign codes which were al­ready qual­i­fied for ir­ra­di­at­ed com­po­nents. Fi­nal­ly, fu­ture up­grades of power and in­ten­si­ty of the pro­ton linac are con­sid­ered, in­clud­ing the de­sign op­ti­miza­tion of the Tar­get Sta­tion (pro­ton/neu­tron con­ver­tor), with the pos­si­bil­i­ty of in­creas­ing the av­er­age pulsed power de­po­si­tion up to 7.5 MW. All pos­si­ble up­grades will be taken into ac­count for the final de­sign re­view, in the frame of the costs and con­straints given with the site de­ci­sion

ESS Conceptual Design Report

The high intensity spallation neutron source ESS is well set to start construction in 2013 and to deliver �rst neutrons in 2019. The project itself has been 20 years in gestation but there has been a determination amongst the user community and those working in national and international neutron laboratories in Europe that it would be built. That determination is what has brought the project in where it is today. The baseline speci�cation is for a 5 MW power, long pulse facility delivering neutrons to 22 independent instruments for the study of materials in all their diversity from pharmaceuticals and membranes, to colloids and polymers, to magnetic and superconducting materials, and on to engineering and archeological artefacts. The user community is rich and equally diverse, containing approximately 6000 individuals according to �gures produced by ENSA, the European Neutron Scattering Association. This Conceptual Design Report represents the work of about 250 individual scientists and engineers around Europe and the rest of the world, with about 100 of them located in the central team in Lund in southern Scandinavia where the facility is to be built, with Sweden and Denmark as co-hosts. As this team has grown over the past 2 years, the work intensity and output has risen considerably. It has taken some time for the realisation that ESS is �nally to be built, to be fully digested, but it is clear now that this is indeed accepted. The CDR is a technical document. It does not address organisational matters, nor governance matters and less so �nancial matters, although it must be emphasised that these subjects are borne in mind in arriving at the scope of ESS and hence the speci�cation of the facility. Over the next 12 months, work will be engaged upon which will result in a Technical Design Report being produced together with a series of other documents such as an updated Costing Report. These documents will demonstrate the sound foundation upon which the project is to be constructed and are a necessary, but not su�cient, achievement to lead on seamlessly to construction. Su�ciency would require our 17 partner countries to reach a political and �nancial agreement. We are con�dent that it is within their capabilities and resources to do so, and we look to them for such a signal

ISOLDE PROGRAMME

The experiments aim at a broad exploration of the properties of atomic nuclei far away from the region of beta stability. Furthermore, the unique radioactive beams of over 60~elements produced at the on-line isotope separators ISOLDE-2 and ISOLDE-3 are used in a wide programme of atomic, solid state and surface physics. Around 300 scientists are involved in the project, coming from about 70 laboratories. \\ \\ The electromagnetic isotope separators are connected on-line with their production targets in the extracted 600 MeV proton or 910~MeV Helium-3 beam of the Synchro-Cyclotron. Secondary beams of radioactive isotopes are available at the facility in intensities of 10$^