Delft in Europe. Neutron & Positrons Oyster & the World

Transcription

1 Delft in Europe Neutron & Positrons Oyster & the World

2 where are we? Oyster - HOR Neutrons and Positrons European Spallation Source

3 where are we? Oyster - HOR Neutrons and Positrons European Spallation Source

4 we are here!!

5 neutrons - positrons unique tools for exploring the matter at the micro and nanoscale

6 engineering materials energy neutrons positrons soft matter magnetism biology health

7 neutrons - positrons

8 reactor based positron beams Positrons: first reactor-based positron beam SNS J-PARC

9 reactor based positron beams Positrons: first reactor-based positron beam SNS J-PARC

10 reactor based positron beams Positrons: first reactor-based positron beam SNS J-PARC

11 neutrons - positrons motors textures radiography/tomography textures length scales [m] cells small angle scattering and reflectometry domains polymers diffraction magnetic structures charge densities nuclei nuclear physics

12 neutrons - positrons time scales [s] time resolved radiography reflectometry diffraction neutron spin echo spectroscopy moving motors domain wall dynamics dynamics of macromolecules backscattering rotations tunneling Time-of-Flight and triple axis spectroscopy high energy inelastic neutron scattering stoner excitations spin waves phonons Compton scattering

13 neutron production fission - reactors spallation unstable intermediate nucleus slow neutron capture of 235 U continuous sources except Dubna nuclei bombarded with high energy particles pulsed sources except PSI

14 evolution of the neutron flux source: ESS

15 the answer is optimum use of the neutrons delivered by the source excellence in instrumentation sophisticated experiments novel concepts

16 And in Delft? 2 MW reactor No cold source Tradition in methodological developments Excellence in novel instrumentation

17 where are we? Oyster - HOR Neutrons and Positrons European Spallation Source

18 Optimized Yield for Science, Technology and Education of Radiation

19 Optimized Yield for Science, Technology and Education of Radiation Compact core Increase of power to 3 MW

20 Optimized Yield for Science, Technology and Education of Radiation Cold Source at R2

21 Why Oyster? Compactation of Core - Higher Intensity Better statistics More sophisticated measurements Kinetic measurements Cold Source - Longer Wavelengths Longer Length Scales No Bragg scattering More scattering

22 HOR GKSS reactor shuts down in summer 2010

23 HOR GKSS reactor shuts down in summer 2010

24 Optimized Yield for Science, Technology and Education of Radiation GKSS cold source GKSS medium resolution SANS TOF powder diffractometer 500 K from TU Delft board 280 from R3

25 Optimized Yield for Science, Technology and Education of Radiation

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28 Optimized Yield for Science, Technology and Education of Radiation Letters sent to ministries and decision makers Decisions do be taken Structures for OYSTER

29 Optimized Yield for Science, Technology and Education of Radiation Establish RID as a Dutch national facility within and besides the TU Delft example : FRM 2 in Munich be present in the community and in the media

30 where are we? Oyster - HOR Neutrons and Positrons European Spallation Source

31 Tradition in methodological developments

32 POSH Positron Source Extraction grids now separated from W foils holders Improved electrical insulation and mechanical construction

33 a neutron diffractometer for material science PEARL

34 a neutron diffractometer for material science PEARL

35 a neutron diffractometer for material science PEARL

36 a neutron diffractometer for material science PEARL

37 SESANS monochromator W.G. Bouwman et al., NIMA 586 (2008) 9 detector polarizer /2 rotator sample /2 rotator analyzer magnet I1 magnet 1

38 neutron reflectometry and structures of biological importance

39 Spallation Neutron Source ISIS (UK)

40 Spallation Neutron Source ISIS (UK)

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44 total reflection for light Goos-Hänchen shift up to 2 μm prediction: I. Newton (~1700) experiment: F. Goos and H. Hänchen (1949)

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46 Spallation Neutron Source ISIS (UK)

47 ISIS-TU Delft collaboration for LARMOR an innovative multipurpose instrument structure dynamics

48 where are we? Oyster - HOR Neutrons and Positrons European Spallation Source

49 GENNESYS: neutrons in 2009 Grand European initiative on Nanoscience and nanotechnology using Neutronand Synchrotron radiation Sources

50 GENNESYS: neutrons in 2009 Grand European initiative on Nanoscience and nanotechnology using Neutronand Synchrotron radiation Sources

51 GENNESYS: neutrons in 2009 Grand European initiative on Nanoscience and nanotechnology using Neutronand Synchrotron radiation Sources

52 GENNESYS: neutrons in 2009 Grand European initiative on Nanoscience and nanotechnology using Neutronand Synchrotron radiation Sources

53 and in the near future

54 and in the near future important role for smaller sources: education/training home base instrument development center of knowledge in north-west Europe

55 where are we going???

56 where are we going???

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