Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

First data released from the Alpha Magnetic Spectrometer

04.04.2013
The first published results from the Alpha Magnetic Spectrometer (AMS), a major physics experiment operating on the International Space Station, were announced today by the AMS collaboration spokesman, Nobel Laureate Samuel Ting.

The result is the most precise measurement to date of the ratio of positrons to electrons in cosmic rays. Measurements of this key ratio may eventually provide the world with our first glimpse into dark matter.

The AMS experiment, developed under the leadership of Professor Ting, with support from the U.S. Department of Energy and fifteen other international partners, is the world's most precise detector of cosmic rays. It was constructed at universities around the world and assembled at the European Organization for Nuclear Research (CERN).

"We are very excited with this first result from AMS," said James Siegrist, DOE Associate Director of Science for High Energy Physics. "We look forward to more important results in the future."

"This result is the first step," said Professor Ting, "the beginning of a series of high precision experimental results from the Alpha Magnetic Spectrometer. This shows that a large international particle physics collaboration can work together to do particle physics in space."

The science goals of AMS include the search for dark matter, antimatter, and new physical phenomena. The detector provides high-precision measurements of cosmic ray particle fluxes, their ratios and gamma rays. From the time of its conception in 1994, U.S. support for the AMS experiment has come from DOE's Office of Science, which provided about $50 million in funding over the life of the program.

This first physics result from AMS is based on 18 months of operation, during which time AMS measured 6,800,000 cosmic ray electrons in the energy range of a half-billion to a trillion electron volts, and over 400,000 positrons (positive electrons), the largest number of energetic antimatter particles directly measured from space. The importance of this measurement is that it could eventually provide a "smoking gun" that certain dark matter particles exist and that dark matter particles and antiparticles are annihilating each other in space.

Although the data do not show a "smoking gun" at this time, this first high-precision (~1% error) measurement of the spectrum has interesting features not seen before that future data may help clarify. With additional data in the coming years, AMS has the potential to shed light on dark matter.

AMS was installed on the Space Station on May 19, 2011 after having been brought into orbit on the last flight of NASA's space shuttle Endeavour under the command of Captain Mark Kelly. Within only hours of its installation on the exterior of the Space Station, AMS became fully operational, and to date has measured over 30 billion cosmic ray events. Working in close cooperation with NASA astronauts and NASA's Johnson Space Center and Marshall Space Flight Center, AMS has maintained a flawless record of performance in the face of a hostile space environment.

Hundreds of scientists, engineers, technicians and students from all over the world have worked together for over 18 years on the AMS collaboration. The collaboration includes scientists from Europe (Finland, France, Germany, Italy, the Netherlands, Portugal, Spain, Switzerland, Romania, Russia, Turkey), Asia (China, Korea, Taiwan), and North America (Mexico and the United States).

DOE's Office of Science is the single largest supporter of basic research in the physical sciences in the United States, and is working to address some of the most pressing challenges of our time. For more information, please visit science.energy.gov.

Press Office | EurekAlert!
Further information:
http://science.energy.gov

More articles from Physics and Astronomy:

nachricht A 100-year-old physics problem has been solved at EPFL
23.06.2017 | Ecole Polytechnique Fédérale de Lausanne

nachricht Quantum thermometer or optical refrigerator?
23.06.2017 | National Institute of Standards and Technology (NIST)

All articles from Physics and Astronomy >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Can we see monkeys from space? Emerging technologies to map biodiversity

An international team of scientists has proposed a new multi-disciplinary approach in which an array of new technologies will allow us to map biodiversity and the risks that wildlife is facing at the scale of whole landscapes. The findings are published in Nature Ecology and Evolution. This international research is led by the Kunming Institute of Zoology from China, University of East Anglia, University of Leicester and the Leibniz Institute for Zoo and Wildlife Research.

Using a combination of satellite and ground data, the team proposes that it is now possible to map biodiversity with an accuracy that has not been previously...

Im Focus: Climate satellite: Tracking methane with robust laser technology

Heatwaves in the Arctic, longer periods of vegetation in Europe, severe floods in West Africa – starting in 2021, scientists want to explore the emissions of the greenhouse gas methane with the German-French satellite MERLIN. This is made possible by a new robust laser system of the Fraunhofer Institute for Laser Technology ILT in Aachen, which achieves unprecedented measurement accuracy.

Methane is primarily the result of the decomposition of organic matter. The gas has a 25 times greater warming potential than carbon dioxide, but is not as...

Im Focus: How protons move through a fuel cell

Hydrogen is regarded as the energy source of the future: It is produced with solar power and can be used to generate heat and electricity in fuel cells. Empa researchers have now succeeded in decoding the movement of hydrogen ions in crystals – a key step towards more efficient energy conversion in the hydrogen industry of tomorrow.

As charge carriers, electrons and ions play the leading role in electrochemical energy storage devices and converters such as batteries and fuel cells. Proton...

Im Focus: A unique data centre for cosmological simulations

Scientists from the Excellence Cluster Universe at the Ludwig-Maximilians-Universität Munich have establised "Cosmowebportal", a unique data centre for cosmological simulations located at the Leibniz Supercomputing Centre (LRZ) of the Bavarian Academy of Sciences. The complete results of a series of large hydrodynamical cosmological simulations are available, with data volumes typically exceeding several hundred terabytes. Scientists worldwide can interactively explore these complex simulations via a web interface and directly access the results.

With current telescopes, scientists can observe our Universe’s galaxies and galaxy clusters and their distribution along an invisible cosmic web. From the...

Im Focus: Scientists develop molecular thermometer for contactless measurement using infrared light

Temperature measurements possible even on the smallest scale / Molecular ruby for use in material sciences, biology, and medicine

Chemists at Johannes Gutenberg University Mainz (JGU) in cooperation with researchers of the German Federal Institute for Materials Research and Testing (BAM)...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Plants are networkers

19.06.2017 | Event News

Digital Survival Training for Executives

13.06.2017 | Event News

Global Learning Council Summit 2017

13.06.2017 | Event News

 
Latest News

Quantum thermometer or optical refrigerator?

23.06.2017 | Physics and Astronomy

A 100-year-old physics problem has been solved at EPFL

23.06.2017 | Physics and Astronomy

Equipping form with function

23.06.2017 | Information Technology

VideoLinks
B2B-VideoLinks
More VideoLinks >>>