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Construction of the Axion Dark Matter eXperiment (ADMX) upgrade

Construction of the Axion Dark Matter eXperiment (ADMX) upgrade. Dmitry Lyapustin April APS meeting Monday April 15 t h , 2013. ADMX recap. The Axion Dark Matter eXperiment (ADMX) looks for axions in our galactic halo

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Construction of the Axion Dark Matter eXperiment (ADMX) upgrade

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  1. Construction of the Axion Dark Matter eXperiment (ADMX) upgrade Dmitry Lyapustin April APS meeting Monday April 15th, 2013

  2. ADMX recap The Axion Dark Matter eXperiment (ADMX) looks for axions in our galactic halo We are the only experiment sensitive to plausible dark matter axions Previous versions of ADMX were able to place bounds on realistic axions Dmitry Lyapustin 2 April APS meeting

  3. How sensitive are we? By far the most sensitive radio receiver on Earth Capable of detecting 10-26 W of radiative power Your cellphone on Mars would get 4 bars* *Without the ADMX shielding Dmitry Lyapustin 3 April APS meeting

  4. How can we do better? Radiometer equation: Previous versions of ADMX ran at ~ 4K system temperature We are upgrading the experiment to use a dilution refrigerator We expect to get down to ~ 100 mK with the upgrade Dmitry Lyapustin 4 April APS meeting

  5. What it takes to get colder Parts design and fabrication Cryogenics Quantum amplifiers Site infrastructure Dmitry Lyapustin 5 April APS meeting

  6. What it takes to get colder Parts design and fabrication Cryogenics Quantum amplifiers Site infrastructure Dmitry Lyapustin5 April APS meeting

  7. Parts design Almost all components must be redesigned and built anew The great majority of parts have been designed and built Dmitry Lyapustin 6 April APS meeting

  8. Parts fabrication 1 Dmitry Lyapustin 7 April APS meeting

  9. Parts fabrication 2 Dmitry Lyapustin8 April APS meeting

  10. Parts fabrication 3 Dmitry Lyapustin 9 April APS meeting

  11. Insert assembly Dmitry Lyapustin 10 April APS meeting

  12. Site infrastructure progress • Clean room • Helium liquefaction system • Electronics wall • Pump hut Dmitry Lyapustin 11 April APS meeting

  13. Site development Dmitry Lyapustin 12 April APS meeting

  14. Clean room Dmitry Lyapustin 13 April APS meeting

  15. Helium liquefaction system Dmitry Lyapustin 14 April APS meeting

  16. Electronics wall Dmitry Lyapustin 15 April APS meeting

  17. Pump hut Dmitry Lyapustin 16 April APS meeting

  18. Construction montage Dmitry Lyapustin 17 April APS meeting

  19. Expected sensitivity Dmitry Lyapustin 18 April APS meeting

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