Hi! We are scientists with the ADMX collaboration, and our experiment is
the best chance of discovering a type of dark matter called the axion.
Ask us anything!
Abstract
What we do: Dark matter is a mysterious form of matter that makes up
80% of the matter in the universe. We call it dark matter because it
doesn’t emit or reflect any light or radiation, so it’s basically
invisible. The ADMX experiment looks for a theoretical type of dark
matter known as the axion. These hypothetical particles were developed
to solve problems in nuclear physics, but its properties also make it a
very promising dark matter candidate. The detection of axion dark matter
would solve two of the biggest mysteries in physics. ADMX is an
incredibly sensitive detector that functions a lot like an AM radio and
tries to “hear” a particular signal from axions. We just published
results from our most recent science run, where we achieved an
unprecedented sensitivity to axion dark matter that makes us the first
experiment to probe the most likely areas for axions. Ask us all your
axion, dark matter, and science questions! The ADMX Answering Board:
University of Washington (UW) Gray Rybka: Gray is a professor at the
University of Washington and a spokesperson of the ADMX experiment. He
works on data taking and development of the analysis package for the
main experiment housed at UW. Rakshya Khatiwada: Rakshya is a postdoc at
the University of Washington. She works on the development and
implementation of the current and future ADMX detectors containing
cryogenic electronics package along with the system noise temperature
characterization. This package houses a number of radio frequency
electronics components, including quantum-noise-limited amplifiers,
which allow ADMX to reach its high sensitivity. Chelsea Bartram: Chelsea
is an incoming postdoc to the University of Washington. She is currently
finishing her PhD at the University of North Carolina, Chapel Hill,
working on searching for CP violation in lepton number with the CALIOPE
experiment. Nick Du: Nick is a graduate student at the University of
Washington. He works on the main ADMX experiment developing the sensors
package for the experiment and implementing a blind axion injection
scheme for the experiment. Lawrence Livermore National Laboratory (LLNL)
Gianpaolo Carosi: Gianpaolo is a staff scientist at Lawrence Livermore
National Laboratory and a spokesperson of the ADMX experiment. His group
works on designing and implementing the motion control systems for the
cavity and coming up with future designs for higher mass axion
experiments. Nathan Woollett: Nathan is a postdoc at Lawrence Livermore
National Laboratory. His group works on testing components of the ADMX
cold electronics package before it gets added to the main experiment. He
is also working on different detector designs for higher mass axion
searches. Fermilab National Accelerator Laboratory (FNAL) Daniel
Bowring: Daniel (@doctorbowring) is a physicist at Fermilab, working to
design, build, and control new types of particle accelerator. His work
for ADMX focuses on detector design, and specifically on cooking up new
ways to improve our signal-to-noise ratio. Akash Dixit: Akash is a
graduate student at the University of Chicago. He is working on
developing photon amplifier and detector technology for use in axion
searches at higher masses. Pacific Northwest National Laboratory (PNNL)
Christian Boutan: Christian is a postdoc at Pacific Northwest National
Laboratory. He started out as a graduate student at the University of
Washington where he created an experiment looking for higher mass axions
known as Sidecar. He now works at PNNL on designs for the next run of
ADMX which will feature an array of 4 cavities tuned to the same
frequency. University of California Berkeley (UCB) Sean O’Kelley: Sean
O’Kelley is a graduate student at the University of California Berkeley.
His lab works on developing extremely low noise amplifiers, known as
Superconducting QUantum Interference Device (SQUID) amplifiers. The
ultra-low noise of these amplifiers is part of what allows the
experiment to reach its high sensitivity. Publication: Search for
Invisible Axion Dark Matter with the Axion Dark Matter Experiment Press
Releases: University of Washington Lawrence Livermore National
Laboratory Fermilab University of California, Berkeley Social Media: Web
Page Twitter Edit: Hi all! Thanks for all of your great questions. We
had a lot of fun answering all of your questions! Until next time!