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Frontiers of THz ScienceZX Shen

SLAC Chief Scientist

SLAC Today:Diversified Portfolio

High Energy PhysicsKavli Institute for Particle

Astrophysics and Cosmology

Facility for Advanced Accelerator Experimental Tests

Linac Coherent

Light Source

Stanford Synchrotron Radiation Lightsource

X-ray Science

Future Accelerators

Astrophysics

Super-Computing:All areas of the LAB

Facilities for Scientific Users

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Hold Slide for NobelsNobel PrizesPhysics,1976Pioneering experimental contributions to lepton physics.

Burton Richter Samuel C.C. Ting Richard E. Taylor Jerome I. Friedman Henry W. Kendall

Martin L. Perl Frederick Reines Roger Kornberg

Physics,1990Deep inelastic scattering of electrons on protons and bound neutrons Essential for the development of the quark model

Physics,1995Discovery of thetau lepton

Chemistry, 2006Studies of the molecular basis of eukaryotic transcription

Ada YonathYoichiro Nambu, Makoto Kobayashi, Toshihide Maskawa

Physics, 2008Theory of broken symmetries later observed by BaBar

Chemistry, 2009Studies of the structure and function of the ribosome, foundation studies at SSRL

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Accelerator Physics Tradition at SLAC

Mission of the New SLAC• Grow into the premier Photon Science Laboratory• Build and operate world leading facilities • Perform world leading science at these facilities

• Maintain our position as the premier accelerator laboratory• Pursue strategic programs in particle physics, particle astrophysics and

cosmology

SSRL

FACET National User Facility

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SSRL: Science

8Executive Cabinet Retreat

Arrillaga Sports Facility

Our New Mission drives the need for New Infrastructure

Inside View: LCLS Undulator Tunnel

• Lasing ‘campaign’ started at 7PM on 4/10/09

• By 10PM, the world’s first x-ray free electron laser was lasing!

• First experiments started 10/1/09

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LCLS: Experimental Stations

Hutch 1: AMOAtomic, Molecular, and Optical

Hutch 2: SXRSoft X-ray

Hutch 3: XPPX-ray Pump Probe

Hutch 4: XCSX-ray Correlation Spectroscopy

Hutch 5: CXICoherent X-ray Imaging

Hutch 6: MECMatter in Extreme Conditions

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Imaging a Mimivirus

Protein Structure for Photosystem 1 used during

photosynthesis

LCLS: Results

Creating 2,000,000 oC plasmaMolecular structure of proteins as

measured by X-ray Patterns

Electromagnetic spectrum

l (m)10010-210-410-610-810-10

NMR, NQR: spin dynamics

MRI: life science

THz

IR

10-9 10-7 10-5 10-3 10-110-11

IR-induced collective modes

THZ-Mid-IR material control

Vis

Opticalmicroscope

THz imaging: security and medical usage

UV

Soft X-ray

Hard X-ray

Photoelectronspectroscopy

Diffractive X-ray imaging

X-ray scattering for structural and spectral

analysis

In-situ X-ray Monitoring

Microwave

Shen group, 2012

Lasers

Soft x-ray absorption

l (m)10010-210-410-610-810-10THz

IR

10-9 10-7 10-5 10-3 10-110-11

VisUV

Soft X-ray

Hard X-ray Microwave

Shen Group, 2012

Penetration(“tunneling”)

Penetration(“hitting through”)

Ionization line(“life” to the right)

“Collective Excitation”Phonons, magnons, collective modes, spin resonances, plasmons of 2D gas, Landau levels, cyclotron modes, Zeeman splitting, energy gap of collective states…

Resolution

Penetration

Precision in knowing the atoms, structure, symmetry, …

Sensitivity to electrons elementary excitations, spin orbit physics

Chemical sensitivity element, chemical, resonance edges …

• Living worldsolar,

lighting, heating, ..

Photo-synthesis ..

• Living world communication, TV,

radio, cell phone, computers, electricity …

Electromagnetic spectrum

l (m)10010-210-410-610-810-10

NMR, NQR: spin dynamics

MRI: life science

THz

IR

10-9 10-7 10-5 10-3 10-110-11

IR-induced collective modes

THZ-Mid-IR material control

Vis

Opticalmicroscope

THz imaging: security and medical usage

UV

Soft X-ray

Hard X-ray

Photoelectronspectroscopy

Diffractive X-ray imaging

X-ray scattering for structural and spectral

analysis

In-situ X-ray Monitoring

Microwave

Shen group, 2012

Lasers

Soft x-ray absorption

Electromagnetic spectrum

l (m)10010-210-410-610-810-10

NMR, NQR: spin dynamics

MRI: life science

THz

IR

10-9 10-7 10-5 10-3 10-110-11

IR-induced collective modes

THZ-Mid-IR material control

Vis

Opticalmicroscope

THz imaging: security and medical usage

UV

Soft X-ray

Hard X-ray

Photoelectronspectroscopy

Diffractive X-ray imaging

X-ray scattering for structural and spectral

analysis

In-situ X-ray Monitoring

Microwave

Shen group, 2012

Lasers

Soft x-ray absorption

ERL

Accelerator Based Sources

LINAC?

Electromagnetic spectrum