G. Dattoli and F. Nguyen ENEA-FRASCATI

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Presentation transcript:

G. Dattoli and F. Nguyen ENEA-FRASCATI Free Electron Laser: can it become a tool for «fundamental» Physics research? G. Dattoli and F. Nguyen ENEA-FRASCATI

Whatever we do…oscillators, SASE… FEL process can be reduced to an Elementary Interaction

One Atom maser

Two Level masing

What about FEL? Bambini-Renieri Frame

Momentum conservation Elementary…. Momentum conservation

Elementary…. Going beyond the Bloch Nordsieck theorem Recoil Kinetic energy

Momentum recoil and Gain

Jaynes -Cummings FEL

Why such a detour? Just to remind that FEL is not just a technological device…… ….That it can be exploited as an experimental tool covering realmof research not strictly associated with the main stream…

Dr. Madey’s terrific beam enlights the darkness and solves any mistery…

…And, may be, other… FEL for g-g collider Double FEL scheme Cross section

g-g-FEL number of counts

A detour from universe energy buget to stron CP problem The Solution: A new field cancelling this effect 14 14

The new field bring a particle the Axion: the origin of the name 15 15

Few more details All these are classified as Weakly Interacting Slim Particles: Hypothetical bosons with mass m < 1 eV/c2 16 16

Axion interaction with matter? Primakoff- Effect photon Virtual-photon Axion

Light Shining through the Wall Ideal physics case: reproduce axions in laboratory! EM radiation free to propagate in a B field region, in vacuum Photon detectors properly shielded Any signal is related to something non-standard 18 18

Search for Solar Axions Axion Helioscope (Sikivie 1983) Primakoff production Axion flux N g Magnet S Axion-Photon-Oscillation Tokyo Axion Helioscope (“Sumico”) (Results since 1998, up again 2008) CERN Axion Solar Telescope (CAST) (Data since 2003) Alternative technique: Bragg conversion in crystal Experimental limits on solar axion flux from dark-matter experiments (SOLAX, COSME, DAMA, CDMS ...) Raphelt 2011

SLW Experiment

Intracavity photon axion interaction

AXION & FEL=AXEL Photon-Axion-conversion Axion-Photon Conversion

Number of Counts vs. FEL-O Parameters

AXEL

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