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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
Construction of the Axion Dark Matter eXperiment (ADMX) upgrade

Dmitry Lyapustin

April APS meeting

Monday April 15th, 2013


Admx recap
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


How sensitive are we
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


How can we do better
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


What it takes to get colder
What it takes to get colder

Parts design and fabrication

Cryogenics

Quantum amplifiers

Site infrastructure

Dmitry Lyapustin 5 April APS meeting


What it takes to get colder1
What it takes to get colder

Parts design and fabrication

Cryogenics

Quantum amplifiers

Site infrastructure

Dmitry Lyapustin5 April APS meeting


Parts design
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


Parts fabrication 1
Parts fabrication 1

Dmitry Lyapustin 7 April APS meeting


Parts fabrication 2
Parts fabrication 2

Dmitry Lyapustin8 April APS meeting


Parts fabrication 3
Parts fabrication 3

Dmitry Lyapustin 9 April APS meeting


Insert assembly
Insert assembly

Dmitry Lyapustin 10 April APS meeting


Site infrastructure progress
Site infrastructure progress

  • Clean room

  • Helium liquefaction system

  • Electronics wall

  • Pump hut

Dmitry Lyapustin 11 April APS meeting


Site development
Site development

Dmitry Lyapustin 12 April APS meeting


Clean room
Clean room

Dmitry Lyapustin 13 April APS meeting


Helium liquefaction system
Helium liquefaction system

Dmitry Lyapustin 14 April APS meeting


Electronics wall
Electronics wall

Dmitry Lyapustin 15 April APS meeting


Pump hut
Pump hut

Dmitry Lyapustin 16 April APS meeting


Construction montage
Construction montage

Dmitry Lyapustin 17 April APS meeting


Expected sensitivity
Expected sensitivity

Dmitry Lyapustin 18 April APS meeting


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