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IceCube Collaboration, Involving UA Scientists, Awarded Breakthrough of the Year

Editor’s Note: A multimedia gallery is available at:


The IceCube Laboratory at the Amundsen-Scott South Pole Station, in Antarctica, hosts the computers collecting raw data (Felipe Pedreros. IceCube/NSF).

MADISON, Wisc. — The IceCube project has been awarded the 2013 Breakthrough of the Year by the British magazine Physics World. The Antarctic observatory, a massive, collaborative effort including University of Alabama researchers, was selected for making the first observation of cosmic neutrinos but also for overcoming the many challenges of creating and operating a colossal detector deep under the ice at the South Pole.

“The ability to detect cosmic neutrinos is a remarkable achievement that gives astronomers a completely new way of studying the cosmos,” said Hamish Johnston, editor of “The judges of the 2013 award were also impressed with the IceCube collaboration’s ability to build and operate a huge and extremely sensitive detector in the most remote and inhospitable place on Earth.”

The IceCube Neutrino Observatory was completed in December 2010, after seven years of construction at the South Pole. But the idea of a huge detector buried in the ice was conceived a long time ago. Back in the 1990s, the AMANDA detector was built as a proof of concept for IceCube. By January 2005, the first sensors of IceCube had already reached 2,450 meters below the Antarctic ice sheet. It was only a few weeks ago that the IceCube Collaboration published in Science the first evidence for a very high-energy astrophysical neutrino flux, opening a new era in astronomy.

Dr. Dawn Williams, an associate professor of physics at The University of Alabama, serves as the project’s calibration coordinator. She was among the Science article’s many co-authors, which also included Drs. Patrick Toale, UA assistant professor of physics,  Dr. Pavel Zarzhitsky, a former UA post-doctoral researcher, and UA graduate students,  Michael Larson, James Pepper and Donglian Xu.

“It’s an interesting energy window into astronomy,” UA’s Williams said when the discovery was revealed.  “The energy of our neutrinos is higher than the energy of any neutrinos that have ever been observed before.”

“I did not imagine that the science would be as exciting as building this detector,”  said Francis Halzen, principal investigator of IceCube and the Hilldale and Gregory Breit Professor of Physics at the University of Wisconsin–Madison. “Challenges were many, from deciphering the optical properties of ice that we have never seen to drilling a hole to 2.5 kilometers in 2 days, and then repeating 86 times. Only the dedication of very talented individuals made this possible.”

As Halzen first envisioned, the ice became the perfect medium to search for very high-energy neutrinos that, after travelling through the universe during millions—even billions—of years, haphazardly interact with the nucleus of a molecule of ice.

“The success of IceCube builds on the efforts of hundreds of collaborators around the world—from the design, the deployment in a harsh environment and the AMANDA prototype to data harvesting and physics analysis. The top breakthrough of the year award is a superb way to ultimately honor these efforts,” said Olga Botner, IceCube spokesperson and physics professor at Uppsala University.

“We made the impossible seem easy,” can be read on a wall at UW–Madison, quoting one of the driller technicians who helped make this telescope a reality. One challenge after another was overcome, and once the full detector was operational, the science results were even more incredible. The first neutrinos from outer space have been observed, but the best might be yet to come, the researchers said.

IceCube is comprised of 5,160 digital optical modules suspended along 86 strings (cables) embedded in a cubic kilometer of ice beneath the South Pole. It detects neutrinos through the tiny flashes of blue light, called Cherenkov light, produced when neutrinos interact in the ice.

The IceCube Neutrino Observatory was built under an NSF Major Research Equipment and Facilities Construction grant, with assistance from partner funding agencies around the world. The project continues with support from a Maintenance and Operations grant from the NSF’s Division of Polar Programs and Physics Division, along with international support from participating institutions and their funding agencies. UW–Madison is the lead institution, and the international collaboration includes 275 physicists and engineers from the U.S., Germany, Sweden, Belgium, Switzerland, Japan, Canada, New Zealand, Australia, U.K., Korea and Denmark.

Physics World will host a Google Hangout Friday, Dec. 13, at 10 a.m. US central standard time with:

In London, Hamish Johnston, editor of

In Madison (Wisconsin), Professor Francis Halzen, principal investigator of IceCube

At the Amundsen-Scott South Pole Station, James Roth, a member of the IceCube Collaboration and a senior electronics instrument specialist at the University of Delaware

You will be able to watch the Hangout live on the Physics World YouTube channel.

UA’s department of physics and astronomy is part of the College of Arts and Sciences, the University’s largest division and the largest liberal arts college in the state. Students from the College have won numerous national awards including Rhodes Scholarships, Goldwater Scholarships and memberships on the USA Today Academic All American Team.

The University of Alabama, a student-centered research university, is experiencing significant growth in both enrollment and academic quality. This growth, which is positively impacting the campus and the state's economy, is in keeping with UA's vision to be the university of choice for the best and brightest students. UA, the state's flagship university, is an academic community united in its commitment to enhancing the quality of life for all Alabamians.