Introduction to Synchrotron Light Sources

Transcription

1 Introduction to Synchrotron Light Sources Sverker Werin MAX IV Laboratory Lund University Sverker Werin, Lund University, NPAS

2 smell like rotten eggs_.html mobile battery life/ Sverker Werin, Lund University, NPAS

3 avslojadeaggstockscancer/ Sverker Werin, Lund University, NPAS

4 Investigate and see! content/uploads/2010/05/nicole katano explore child in the rain.jpg Sverker Werin, Lund University, NPAS

5 Sverker Werin, Lund University, NPAS

6 Light to investigate the world Wavelength 1 nm 1 um 1 mm 1 m 1 km Sverker Werin, Lund University, NPAS

7 Light sources around us Light sources around us Plasma oscillations Guillaume Genoud, Lund University Synchrotron Radiation lab Laser plasma Phil Alibrandi aspx?aid=48173 Sverker Werin, Lund University, NPAS

8 Synchrotron Laboratory (MAX lab) The pieces of MAX IV Sverker Werin, Lund University, NPAS

9 Acceleration Gun and linac Acceleration Gun and linac 1.5 V 1.5 ev but MeV or GeV? Sverker Werin, Lund University, NPAS

10 Acceleration Gun and linac Linear accelerator (MAX IV) Sverker Werin, Lund University, NPAS

11 Inside the ring building Steer around the ring Sverker Werin, Lund University, NPAS

12 Dipole / bending magnet Quadrupole Sverker Werin, Lund University, NPAS

13 Quadrupole y x Sverker Werin, Lund University, NPAS

14 Light and undulators First discovery of SR 1947 "On April 24, Langmuir and I were running the machine we asked the technician to observe with a mirror around the protective concrete wall. (Herb Pollock) General Electric Research Laboratory, Schenectady, NY, US Sverker Werin MAX IV laboratory, Lund University 40 Sverker Werin, Lund University, NPAS

15 Techniques at a beam line Scattering Spectroscopy Imaging Samples Sverker Werin, Lund University, NPAS

16 Catalyser (rhodium) Geometry and chemical bonds with the help of photo electron spectroscopy Clean rhodiumcrystal surface Some oxygen added Energy related research Grätzel type solar cell Rechargeable Li batteries Bonding of dye molecules Probing charge transfer times < 2.5 fs J. Schnadt et al. Sverker Werin, Lund University, NPAS

17 What happens with the wood in the Vasa ship? Photo: Hans Hammarskiöld, the Vasa Museum What happens with the wood in the Vasa ship? Svavel Svavel XANES spektra från Vasa Sulfat S 8 2- SO mm top x x3 Normalized Intensity x20 x120 x x200 Nature 2002, 415, M. Sandström et al Energy (ev) Sverker Werin, Lund University, NPAS

18 Drugs (ribosome in a bacteria) 2009 Nobel price in Chemistry Venkatraman Ramakrishnan, Thomas A. Steitz and Ada E. Yonath 0th and 1st generation light sources Parasitic machines, built to do something else. DESY 7.4 GeV electron synchrotron 1964 electron positron collider 1967 SR production as a side effect ACO in Orsay, Paris Electron positron collider 500 MeV Where is DESY? (Erased from history?) Sverker Werin, Lund University, NPAS

19 2nd generation light sources Built to produce Synchrotron Radiation from bending magnets. Tantalus, 240 MeV, Wisconsin (Ed Rowe) ( ) The injector in Jordan as SESAME (2014) MAX I, 550 MeV, Lund, Sweden ( ) BESSY I, Berlin, 800 MeV ( ) berlin.de/tui/00jan/bessy_1.htm 3rd generation Synchrotron sources nearby built to use undulators Diamond, Oxford Soleil, Paris BESSY II, Berlin MAX II, Lund Sverker Werin, Lund University, NPAS

20 What comes next? Ultimate generation light sources Free Electron Laser (FEL), Increasing coherence Stanford Hamburg Japan Switzerland Sverker Werin, Lund University, NPAS

21 Ring (96 m circumf) Ring (528 m circumf) Linear accelerator (ca 250 m) What is MAX IV? Experimental stations Smallest Sweden s 2000 electron first largest sketches emittance guns research facility Larger Building m ready linear wavelength 2 billion for accelerator start kr ( >rent) ofrange construction (PEAB, Whilborgs) Accelerator storagefirstelectronsaccelerated rings( billion kr m) X rays Beamlines ~30 experimental linear + experimental accelerator stations stations full energy 0.1 billion/pc Financed Stable 2015 (1 finnish estonian+1 firstby experiments Lund University, danish) Research council, More short Vinnova the experimental pulse rings and facility are Region completed Skåne. stations 2016 first experiments at the rings MAX IV is Inauguration not ESS Electron source What is MAX IV? Circumference (m) 528 Nr of straight sections 20 Injection full energy, top up Stored current (ma) 500 Horizontal emittance (nm rad) Vertical emittance (nm rad) < Horizontal beam size (σ µm) Vertical beam size (σ µm) < 6 Sverker Werin, Lund University, NPAS

22 How? Small dispersion Sextupoles and chromaticity corr.? Instabilities (?) 7 BA Small emittance Small beam High density Stretch the beam 100 MHz RF Harmonic cavities Short linac SR ports? Small vacuum chamber Pumping? Small magnets NEG coating Sverker Werin, Lund University, NPAS

23 Thanks for listening! Sverker Werin, Lund University, NPAS