D. M. Fritz [email protected] LCLS FAC Meeting April 16, 2007 XPP Instrument X-ray...
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D. M. Fritz [email protected]LCLS FAC Meeting April 16, 2007 XPP Instrument X-ray Pump-Probe Instrument D. M. Fritz X-ray Pump-Probe Instrument D. M. Fritz Pump-probe Experiments System Description X-ray optics Laser System Detector Sample environments Laser/X-ray Timing Technical Choice Pump-probe Experiments System Description X-ray optics Laser System Detector Sample environments Laser/X-ray Timing Technical Choice
D. M. Fritz [email protected] LCLS FAC Meeting April 16, 2007 XPP Instrument X-ray Pump-Probe Instrument D. M. Fritz Pump-probe Experiments System
D. M. Fritz [email protected] LCLS FAC Meeting April
16, 2007 XPP Instrument X-ray Pump-Probe Instrument D. M. Fritz
Pump-probe Experiments System Description X-ray optics Laser System
Detector Sample environments Laser/X-ray Timing Technical Choice
Pump-probe Experiments System Description X-ray optics Laser System
Detector Sample environments Laser/X-ray Timing Technical
Choice
Slide 2
D. M. Fritz [email protected] LCLS FAC Meeting April
16, 2007 XPP Instrument Science Team Specifications and instrument
concept developed with the science team. The XRPP team Kelly
Gaffney (leader), SSRL/SLAC Jorgen Larsson, Lund Institute of
Technology, Sweden David Reis, University of Michigan Thomas
Tschentscher, DESY, Germany Specifications and instrument concept
developed with the science team. The XRPP team Kelly Gaffney
(leader), SSRL/SLAC Jorgen Larsson, Lund Institute of Technology,
Sweden David Reis, University of Michigan Thomas Tschentscher,
DESY, Germany
Slide 3
D. M. Fritz [email protected] LCLS FAC Meeting April
16, 2007 XPP Instrument X-ray Pump-Probe Science Phase Transitions
Order / Disorder Metal/Insulator Phonon Dynamics Charge Transfer
Reactions Photosynthesis Photovoltaics Vision Photoactive Proteins
Phase Transitions Order / Disorder Metal/Insulator Phonon Dynamics
Charge Transfer Reactions Photosynthesis Photovoltaics Vision
Photoactive Proteins photo- excitation Stampfli and Bennemann Phys.
Rev. B 49, 7299 (1994) photo- excitation
Slide 4
D. M. Fritz [email protected] LCLS FAC Meeting April
16, 2007 XPP Instrument Time Resolved Scattering
Slide 5
D. M. Fritz [email protected] LCLS FAC Meeting April
16, 2007 XPP Instrument X-ray Pump-Probe Instrument Offset
Monochromator Laser System (Fundamental) X-ray Diffractometer
Wavelength Conversion Small Angle Scattering
D. M. Fritz [email protected] LCLS FAC Meeting April
16, 2007 XPP Instrument X-ray Optics Double Crystal Offset
Monochromator for 2 m Si (111) @ 1.5 85% transmission,2.5% - Mono
beam, 1.3% - Diagnostics beam Double Crystal Offset Monochromator
for 2 m Si (111) @ 1.5 85% transmission,2.5% - Mono beam, 1.3% -
Diagnostics beam
Slide 8
D. M. Fritz [email protected] LCLS FAC Meeting April
16, 2007 XPP Instrument X-ray Optics Double Crystal Offset
Monochromator (cont.) motion 0.02 arcsecond resolution and
repeatability (100 nrad) Double Crystal Offset Monochromator
(cont.) motion 0.02 arcsecond resolution and repeatability (100
nrad) Flexure Stages Piezoelectric Stages
Slide 9
D. M. Fritz [email protected] LCLS FAC Meeting April
16, 2007 XPP Instrument X-ray Optics Beryllium lens focusing optic
Variable spot size from 2-10 m and 40-60 m @ 8.3 keV Variable spot
size from 2-10 m @ 24.9 keV > 40% throughput Positioning
resolution and repeatability to 1 m Beryllium lens focusing optic
Variable spot size from 2-10 m and 40-60 m @ 8.3 keV Variable spot
size from 2-10 m @ 24.9 keV > 40% throughput Positioning
resolution and repeatability to 1 m Lens Mono 190 m 4 m
Slide 10
D. M. Fritz [email protected] LCLS FAC Meeting April
16, 2007 XPP Instrument Laser System Overview
Slide 11
D. M. Fritz [email protected] LCLS FAC Meeting April
16, 2007 XPP Instrument Ultrafast Laser System Ti:Sapphire
Oscillator & Power Amplifiers Compressor, OPA, Harmonic
Generation, Delay Stage
Slide 12
D. M. Fritz [email protected] LCLS FAC Meeting April
16, 2007 XPP Instrument Ultrafast Laser System Ti:Sapphire
Oscillator 119 MHz rep. rate,
Slide 13
D. M. Fritz [email protected] LCLS FAC Meeting April
16, 2007 XPP Instrument Ultrafast Laser System Power Amplifiers
Regenerative amplifier ~ 2.5 mJ (< 1% rms stability), 120
Hz,