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Bright Lights on the Horizon
Bright Lights on the Horizon
Evolution of Brilliance
Evolution of Brilliance
PETRA-III Upgrade
PETRA-III Upgrade
Schedule
Schedule
PETRA III - Facts and Figures
PETRA III - Facts and Figures
NRS Beamline Proposed at PETRA-III
NRS Beamline Proposed at PETRA-III
NRS from Isotopic Probe Layers using Microfocused Beams
NRS from Isotopic Probe Layers using Microfocused Beams
High-Resolution Monochromators at PETRA-III
High-Resolution Monochromators at PETRA-III
Limits of Storage – Ring Based Sources
Limits of Storage – Ring Based Sources
X-Ray Free-Electron Lasers
X-Ray Free-Electron Lasers
SASE exponential growth and saturation
SASE exponential growth and saturation
Electron bunch modulation
Electron bunch modulation
Time structure of the XFEL radiation
Time structure of the XFEL radiation
Radiation parameters
Radiation parameters
Published science cases for FEL radiation
Published science cases for FEL radiation
Roadmap towards an 0.086 nm XFEL
Roadmap towards an 0.086 nm XFEL
The European XFEL project
The European XFEL project
The European XFEL at the DESY site
The European XFEL at the DESY site
Feb 2003 BMBF indicates ‚green light‘ for European XFEL Oct 2003
Feb 2003 BMBF indicates ‚green light‘ for European XFEL Oct 2003
Ultrafast Processes
Ultrafast Processes
NRS Experiments at the XFEL
NRS Experiments at the XFEL

Презентация: «Bright Lights on the Horizon». Автор: DESY User. Файл: «Bright Lights on the Horizon.ppt». Размер zip-архива: 3684 КБ.

Bright Lights on the Horizon

содержание презентации «Bright Lights on the Horizon.ppt»
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1 Bright Lights on the Horizon

Bright Lights on the Horizon

Future Perspectives for Nuclear Resonant Scattering of Synchrotron Radiation

Ralf R?hlsberger HASYLAB @ DESY, Hamburg, Germany

The Evolution of Brilliance Upgrade of Existing Sources Construction of New Sources: PETRA III and the XFEL

2 Evolution of Brilliance

Evolution of Brilliance

3 PETRA-III Upgrade

PETRA-III Upgrade

http://www-hasylab.desy.de/facility/upgrade/main.htm

4 Schedule

Schedule

Submission of the Technical Design Report: March 2004 Selection of the phase I beamlines: early Summer 2004 Start of beamline R&D, prototyping: mid 2004 Start of detailed beamline planning: end 2004/2005 ? user workshops on detailed beamline design Start of component production: 2006 Start of reconstruction: mid 2007 Installation of first beamlines: mid 2008 Start of user operation: 2009

5 PETRA III - Facts and Figures

PETRA III - Facts and Figures

Storage Ring

Particle energy = 6 GeV Current = 100 mA (200 mA) Emittance = 1 nmrad

Operation

Number of bunches: 40 – 960 Bunch distance: 192 ns – 8 ns Top-up operation mode

6 NRS Beamline Proposed at PETRA-III

NRS Beamline Proposed at PETRA-III

General Experiment Support

Cryostats, high-magnetic fields, high-pressure cells, furnaces, detectors (0,1,2 - dimensional), electronics, mechanical components, lasers

20 m undulator

Revolver – type with two magnet structures: 1) optimized for 14.4 keV (fundamental) 2) optimized for 21.5 – 30 keV (third harmonics)

7 NRS from Isotopic Probe Layers using Microfocused Beams

NRS from Isotopic Probe Layers using Microfocused Beams

Spot sizes well below 1mm can be reached by application of focusing mirror optics

Magnetic Properties : Spin Structure and Magnetic Correlations in thin films and nanoparticles

Dynamic Properties : Phonons at interfaces and in nanoparticles Nuclear resonant photon correlation spectroscopy

8 High-Resolution Monochromators at PETRA-III

High-Resolution Monochromators at PETRA-III

Yu. V. Shvyd‘ko (2003)

9 Limits of Storage – Ring Based Sources

Limits of Storage – Ring Based Sources

Development of New Radiation Sources

Beam properties reflect the equilibrium dynamics of particles in the ring, resulting from averaging over all revolutions Particles are re-cycled Design study: The Ultimate Storage Ring (USR)

Radiation is generated by single bunches passing through an undulator Energy – Recovery Linear Accelerator (ERL) Sub-Picosecond Pulsed Source (SPPS) X-ray Free Electron Laser (XFEL)

10 X-Ray Free-Electron Lasers

X-Ray Free-Electron Lasers

Synchrotron radiation low emittance electron beam relativistic electron energy periodic acceleration of electron in magnetic field of an undulator collimated radiation tunable by electron energy & magnetic field

... at x-ray wavelengths no efficient reflectors exist lasing in a ‚single-pass‘ Self-Amplified Spontaneous Emission (SASE)

11 SASE exponential growth and saturation

SASE exponential growth and saturation

12 Electron bunch modulation

Electron bunch modulation

GENESIS - simulation for TTF parameters Courtesy - Sven Reiche (UCLA)

13 Time structure of the XFEL radiation

Time structure of the XFEL radiation

Single bunches. Few bunches. Long trains.

14 Radiation parameters

Radiation parameters

Compared to 3rd generation synchrotron radiation facilities, the gain factors are Peak brilliance 109 (FEL) 104 (spont.) Average brilliance 104 (FEL) Degeneracy 109 (FEL)

109 Total increase 106 FEL gain 103 e-properties undulator length

15 Published science cases for FEL radiation

Published science cases for FEL radiation

Ultrashort duration of X-ray pulses High number of photons per pulse Coherent x-ray radiation

Atoms, molecules, cluster Plasma physics Hard-condensed matter Surface & interface studies Materials science Chemistry Biology Nonlinear phenomena & quantum optics FEL physics

http://slac.stanford.edu/lcls http://xfel.desy.de

16 Roadmap towards an 0.086 nm XFEL

Roadmap towards an 0.086 nm XFEL

2000-2002 TTF-1 (Hamburg)

2000-2001 LEUTL (Argonne)

1980 initial paper

17 The European XFEL project

The European XFEL project

Original proposal (March 2001) part of the TESLA project. In October 2002 an standalone version was proposed Germany agreed to propose a site and to cover 50% of the building cost. Technical parameters are currently reconsidered.

3 FEL and 2 beamlines for spontaneous synchrotron radiation with 10 independent experimental stations

~ 2000m

~ 1200m

18 The European XFEL at the DESY site

The European XFEL at the DESY site

19 Feb 2003 BMBF indicates ‚green light‘ for European XFEL Oct 2003

Feb 2003 BMBF indicates ‚green light‘ for European XFEL Oct 2003

European Strategy Forum for Research Infrastructures evaluates Technical challenges Dec 2003 XFEL enters EU Quickstart programme Jan 2004 Formation of an European steering group Working groups on technological issues Working groups on administrative issues Update of scientific case End 2004 Start plan approval procedure at DESY Workshops to define user/science requirements Early 2005 European agreement on XFEL project Start of project Start of construction 2012 Start of commissioning

Towards the European XFEL

20 Ultrafast Processes

Ultrafast Processes

21 NRS Experiments at the XFEL

NRS Experiments at the XFEL

Use of complementary techniques

Non-equilibrium phenomena

Pump-probe investigations of dynamical phenomena Excitations in artificial spin chains, solitons Fast magnetic switching Magnon spectroscopy, Single – particle imaging

Neutron scattering, Magnetic x-ray scattering, Magneto-optics, Inelastic x-ray scattering, …

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