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ESS The European Spallation Source

ESS The European Spallation Source. ESS The European Spallation Source. ? What ?. ? Why ?. ? How ?. ? When ?. ? Where ?. ESS: What ?. The next generation neutron scattering facility for Europe The most powerful neutron scattering facility in the world. ESS: Why ?.

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ESS The European Spallation Source

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  1. ESS The European Spallation Source

  2. ESS The European Spallation Source ? What ? ? Why ? ? How ? ? When ? ? Where ?

  3. ESS: What ? The next generation neutron scattering facility for Europe The most powerful neutron scattering facility in the world

  4. ESS: Why ? ‘What can we do with this ?’

  5. Why neutrons ? Five good reasons…

  6. Neutrons tell you‘where the atoms are and what the atoms do’(Nobel Prize citation for Brockhouse and Shull 1994) Why neutrons ? (1) The neutron has a wavelength (Å) and an energy (meV) comparable to typical atomic spacings and vibrational energies - so you can study both atomic structure and dynamics (simultaneously if required)

  7. Why neutrons ? (2) The neutron scattering cross-section varies randomly through the periodic table and is isotope dependent - distinguish light and heavy atoms or atoms of similar Z enabling the technique of isotopic substitution/contrast variation

  8. Why neutrons ? (3) The neutron is a weak probe - giving a direct and quantitative link with theory and computer simulation/modelling

  9. Why neutrons ? (4) The neutron is highly penetrating - enabling studies of samples in containers and complex sample environment

  10. Why neutrons ? (5) The neutron has a magnetic moment but no charge - enabling studies of magnetic structure and dynamics

  11. Why neutrons ? Complexity Detail

  12. ESS ESS: Why ? Higher intensity enables ...

  13. ESS: Why ? Kinetic studies

  14. ESS: Why ? Smaller samples More samples

  15. ESS: Why ? Low concentrations

  16. ESS: Why ? Bigger samples

  17. ESS: Why ? Extreme conditions e.g. high pressure

  18. ESS: Why ? Extreme conditions e.g. low T, high B

  19. ESS: Why ? Parametric studies x, y, T, P, B, E ...

  20. ESS: Why ? Processing conditions e.g. shear

  21. ESS: Why ? Surfaces, interfaces, thin films, membranes

  22. ESS: Why ? 3 good reasons (repeated) ...

  23. ESS: Why ? Functional genomics

  24. ESS: Why ? Life sciences need water to function

  25. ESS: Why ?

  26. ESS: Why ? Complementarity

  27. ESS: Why ?

  28. ESS: Why ? Computers

  29. ESS: Why ? and much, much more ...

  30. ESS: How ?

  31. ESS: How ? 1.334 GeV protons 5 MW average beam power 1 long pulse target station (16.6 Hz, 2 ms) 2 short pulse target stations (10 and 50 Hz, 1s) Liquid metal targets ...

  32. ESS: When ? 1977 - 1984 Study, design and construction of the national UK spallation source ISIS 1979 - 1985 Feasibility study for a national German Spallation Source SNQ (beam power up to 5.5 MW) 1984 British spallation source ISIS operational 1985 German SNQ project not approved 1990 Recommendation from a CEC Panel on Large Scale Facilities: ‘Carry out studies for next generation neutron sources’.

  33. ESS: When ? 1991 - 1992 Joint initiative from Jülich and ISIS. Series of workshops held identifying the concept of a future European spallation source 1993 Establishment of the ESS Scientific Council. Chairman: Jurgen Kjems (Riso) 1993 - 1996 Multi-national study on the 5 MWESS. Partly financially supported by the EU (1994 - 1996). Dec. 1996 Publication of the ESS Final Report Volume I - The European Spallation Source Volume II - The Scientific Case Volume III - The Technical Study Identification of further high priority R&D work

  34. ESS: When ? Jan. 1997 Establishment of ESS R&D Council 1997 - 2001 ESS R&D Phase May 2000 New ESS council and project organisation

  35. ESS: When ?

  36. ESS: When ? May 2000 ESS project team formed Oct. 2000 ESS Instrumentation Group and Science Advisory Council formed May 2001 Science/Instrumentation workshop July 2001 Accelerator/Moderator/Target station specified July 2002 Conclusion of multi-purpose facility study (CONCERT) July 2003 ESS design and science case complete for presentation to governments 2004 Project approved 2010First neutrons

  37. Germany (Julich) France (multi-purpose facility) UK (ISIS upgrade) Scandinavia (ESS-S) ESS: Where ?

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