DARK SIDE OF THE LIGHT Ing. Karolina Macúchová Supervisor: doc. Ing. J. Zicha, CSc. Konference Studentské tvůrčí činnosti 2013Dark Side of the Light.

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Presentation transcript:

DARK SIDE OF THE LIGHT Ing. Karolina Macúchová Supervisor: doc. Ing. J. Zicha, CSc. Konference Studentské tvůrčí činnosti 2013Dark Side of the Light

CERN – experiment OSQAR Konference Studentské tvůrčí činnosti 2013Dark Side of the Light

Motivation Dark Side of the LightKonference Studentské tvůrčí činnosti 2013 Dark Matter – Neutrinos, Wimps, Axions?

Search for Axions Dark Side of the LightKonference Studentské tvůrčí činnosti 2013 Experimental approach: axion coupling with two photons Probability of photon – axion conversion in vacuum: Photon regeneration experiment

Experimental Setup Dark Side of the LightKonference Studentské tvůrčí činnosti laser 2. a, b – adjustable mirrors for beam 3. beam expander 4. first LHC magnet 5. light trap 6. optical filters 7. second LHC magnet 8. dark chamber 9. CCD camera 10. data acquisition - PC 11. cooling (H 2 O) 12. cooling (liquid Helium, T = 1.9 K) 13. vacuum pump (p = mbar) 14. vacuum pump 15. cooling (LN2) 16. laser beam 17. Laser cavity

Experimental Setup Dark Side of the LightKonference Studentské tvůrčí činnosti 2013 Laser injection Photon source: Ar + 4W at 514 nm LHC magnets: 9T over 14.3 m cooled down to 1.9 K

Adjustment and focusing Dark Side of the LightKonference Studentské tvůrčí činnosti 2013 →

Other instrumentation Dark Side of the LightKonference Studentské tvůrčí činnosti 2013 Beam dump Dark chamber – neutral density filters

Laser laboratory Dark Side of the LightKonference Studentské tvůrčí činnosti 2013 Plano-concave laser resonator 1000 mm prototype He-Ne laser 18mW at nm

Outlook Dark Side of the LightKonference Studentské tvůrčí činnosti 2013 Approximately 21 m long resonator for the OSQAR experiment In vacuum mbar

Dark Side of the LightKonference Studentské tvůrčí činnosti 2013 Thank you for your attention.