Subscribe free to our newsletters via your
. Space Travel News .

Alpha Magnetic Spectrometer Team Publishes First Findings
by Staff Writers
Washington DC (SPX) Apr 04, 2013

In the foreground is the Alpha Magnetic Spectrometer (AMS) experiment installed on the International Space Station's truss structure. Credit: NASA TV.

Until the launch of the Alpha Magnetic Spectrometer (AMS) experiment in 2011, scientists had compiled a mere anthill of information about the kinds of charged particles, or cosmic rays, that shoot around the universe. Two short years later, they have amassed an Everest-sized mountain of such information.

Using the power and data transmission capabilities of the International Space Station, AMS is circling Earth and sifting through matter, antimatter and other particles that are yet to be confirmed, 365 days a year. Scientists now are beginning to sift through that mountain of data and figure out how it may change our concept of the cosmos.

Astronomical evidence currently indicates that the universe is made of matter; however, the Big Bang theory of the origin of the universe requires equal amounts of matter and antimatter. There also is a significant difference between what physicists believe should be the total amount of mass in the universe and what they have observed so far.

Whether or not there is a significant antimatter, or another kind of matter called "dark matter," is one of the fundamental questions of the origin and nature of the universe that AMS may be able to help answer.

AMS collects its data by recording the number of particles that pass through its collectors; details on the kinds of particles passing through, such as protons and electrons; physical information such as particle charge, mass and velocity; and information on which direction they came from so that scientists can attempt to track down their source. Each one of these pieces of data is called a particle event.

Since its activation on May 19, 2011, AMS has collected detailed information on more than 31 billion particle events and downlinked this data for analysis by AMS collaboration scientists on Earth. In its first six months of operation on the station, AMS had accumulated more data on charged cosmic rays than had been previously collected in the history of human physics studies. And AMS continues to gather data on about 1.4 billion particle events every month.

To do this, the 15,251-pound AMS and its eight primary science instrument systems use 300,000 data channels. The instruments are similar to those used in particle accelerators on Earth such as the Large Hadron Collider at the European Organization for Nuclear Research (CERN) outside of Geneva, Switzerland.

The primary difference between the terrestrial-based instruments and AMS is that AMS' science instrument systems were miniaturized and ruggedized for launch on the space shuttle and operation on the space station.

AMS is operated from the ground by two full shifts and one partial shift at the AMS Payload Operations Control Center (POCC) at CERN. The daily partial shift is run from the AMS Asia POCC at the Chung-Shan Institute of Science and Technology in Taiwan. AMS data are downlinked using the space station's high-rate data system, the same one that is used to transmit television of astronauts living and working on the station.

The data are sent from the orbiting outpost to NASA's Tracking and Data Relay Satellites, which relay it to the satellite reception dishes at NASA's White Sands Test Facility in New Mexico. From there, the data go to NASA's Payload Operations Integration Center at the Marshall Space Flight Center in Huntsville, Ala., and then on to the AMS Payload Operations Control Center in Switzerland.

The space station's solar arrays generate the electricity used by AMS, and they provide up to 1,780 watts of continuous power. That's a little more electricity than an average household on Earth uses continuously when averaged over time.

The AMS project began in 1994, when Professor Samuel Ting, a Nobel laureate from the Massachusetts Institute of Technology, was considering a new high-energy physics experiment. The concept of an international space station had just been announced in 1993, and Ting and his collaborators saw an opportunity for groundbreaking science in space.

This group of particle physicists, called The Antimatter Study Group, published the concept for "An Antimatter Spectrometer in Space." The United States Department of Energy agreed to sponsor the project; NASA agreed to put it in space and the AMS team grew.

To prove the concept, an early version of AMS spent 10 days in space aboard space shuttle Discovery in 1998. The experiment ran for 103 hours and collected data for nearly 100 million cosmic rays. The data gathered provided the first accurate measurement of the composition of primary cosmic rays. From that experiment, seven scientific papers were published.

Work on the current version of the AMS began in 1998. It shipped to NASA's Kennedy Space Center in Florida in August 2010. Space shuttle Endeavour's STS-134 crew carried it into orbit in May 2011, where it was installed on the station's truss structure. It has been measuring particles ever since.

AMS is composed of a magnet and eight detectors that provide the scientists on the ground with information about the particles that travel through the magnet. All of the information is collected in the fraction of a second it takes a particle to travel through AMS.

Led by Principle Investigator and Spokesperson Samuel Ting of the Massachusetts Institute of Technology, the AMS team includes some 600 physicists from 56 institutions in 16 countries from Europe, North America and Asia. The various participants built their particular contributions, which were all integrated when the AMS was built at CERN.

During the STS-134 mission, and for the first several months afterward, about 40 members of the AMS team monitored the experiment and analyzed the data it sent down from the Payload Operations Control Center at NASA's Johnson Space Center in Houston. In July 2011, AMS operations moved back to CERN, where the AMS team continues monitoring and controlling the experiment 24 hours a day, with the capability to gather data for as long as the space station is in orbit.


Related Links
Station at NASA
Station and More at Roscosmos
S.P. Korolev RSC Energia
Watch NASA TV via Space.TV
Space Station News at Space-Travel.Com

Comment on this article via your Facebook, Yahoo, AOL, Hotmail login.

Share this article via these popular social media networks DiggDigg RedditReddit GoogleGoogle

Memory Foam Mattress Review
Newsletters :: SpaceDaily :: SpaceWar :: TerraDaily :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News

New crew takes express ride to space station
Moscow (AFP) March 29, 2013
A new Russian-American crew arrived at the International Space Station (ISS) Friday after a fast-track trip from Earth of under six hours, the swiftest ever manned journey to the orbiting laboratory. A NASA astronaut and two Russian cosmonauts opened the hatches of their Soyuz-TMA spaceship and floated into the ISS to a warm welcome from the three incumbent crew, live pictures broadcast on R ... read more

Future Looks Bright for Private US Space Ventures

Europe's next ATV resupply spacecraft enters final preparatio?ns for its Ariane 5 launch

ILS Proton Launches Satmex 8 Satellite for Satmex

When quality counts: Arianespace reaffirms its North American market presence

BusinessCom Networks Connects Mars 2013

SwRI study finds liquid water flowing above and below frozen Alaskan sand dunes, hints of a wetter Mars

Opportunity Moves Into Place for Quiet Period of Operations

Measuring Mars: The MAVEN Magnetometer

Pre-existing mineralogy may survive lunar impacts

Lunar cycle determines hunting behaviour of nocturnal gulls

Ultraviolet spectrograph observes mercury and hydrogen in GRAIL impact plumes

NASA's LRO Sees GRAIL's Explosive Farewell

'Vulcan' wins Pluto moon name vote

Public to vote on names for Pluto moons

The PI's Perspective: The Seven-Year Itch

New Horizons Gets a New Year's Workout

The Great Exoplanet Debate

Astronomers Detect Water in Atmosphere of Distant Planet

Distant planetary system is a super-sized solar system

Water signature in distant planet shows clues to its formation

Swiss firm plans robotic mini-shuttle

XCOR Driving Rocket Science Forward With Lynx Suborbital Vehicle

ATK Successfully Ground Tests New CASTOR 30XL Upper Stage Solid Rocket Motor

NASA Turns Up the Heat on Construction of the Space Launch System

Shenzhou's Shadow Crew

Shenzhou 10 sent to launch site

China's Next Women Astronauts

Shenzhou 10 - Next Stop: Jiuquan

Dawn remains in silent pursuit of dwarf planet Ceres

NASA's Swift Sizes Up Comet ISON

NASA Scientists Find Moon, Asteroids Share History

Goldstone Radar Snags Images of Asteroid 2013 ET

The content herein, unless otherwise known to be public domain, are Copyright 1995-2014 - Space Media Network. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA Portal Reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement,agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement