Featured Research

from universities, journals, and other organizations

Physicists Step Closer To Understanding Origin Of The Universe

Date:
February 22, 2006
Source:
University of Liverpool
Summary:
The world's largest particle detector is nearing completion following the construction of its 'endcap' at the University of Liverpool. The endcap is part of a semiconductor tracker (SCT) based at the heart of ATLAS -- a giant particle detector the size of a five-storey building. The SCT will become part of the Large Hadron Collider (LHC), based at CERN, the European Centre for Particle Physics Research, in Switzerland.

Work on the SCT Barrel of Atlas -- part of the inner detector at the Large Hadron Collider (LHC), based at CERN, the European Centre for Particle Physics Research, in Switzerland.
Credit: Image courtesy of CERN

The world's largest particle detector is nearing completion following the construction of its 'endcap' at the University of Liverpool.

Related Articles


Its assembly of advanced apparatus, at the University's Semiconductor Detector Centre, has been a joint effort by physicists, engineers and technicians from the Universities of Liverpool, Glasgow, Lancaster, Manchester and Sheffield as well as Daresbury and Rutherford Laboratories.

The endcap is part of a semiconductor tracker (SCT) based at the heart of ATLAS -- a giant particle detector the size of a five-storey building. The SCT will become part of the world's largest particle accelerator -- the Large Hadron Collider (LHC), based at CERN, the European Centre for Particle Physics Research, in Switzerland.

The LHC is being constructed 100 metres underground in a 16-mile long circular tunnel, running under the Franco-Swiss border. Inside the tunnel two particle beams will be accelerated to extremely high energies, and will crash into each other forty million times a second, creating a snapshot of conditions that existed billionths of a second after the 'Big Bang'. ATLAS, the culmination of 15 years' work by over 150 European institutions, aims to find the Higgs particle that holds the key to understanding the origin of mass.

Dr Neil Jackson, from the University's Department of Physics, explains: "Using the LHC we are aiming to discover the Higgs particle and hoping to find evidence for so-called Super-Symmetric particles, which we believe could offer an explanation for the 'dark matter' in the universe. At present the normal matter that we can see in the universe accounts for only 5% of its mass. The origin of the missing mass is unknown, but Super-Symmetric particles may account for some of it. If we discover these particles then we are on our way to explaining why the universe is made the way it is.

"At Liverpool we have tested 988 detector modules and assembled them into one of two SCT endcaps. The modules will detect the reactions produced as the accelerator collides billions of protons in the centre of ATLAS. The particles produced in these collisions are recorded as they pass through the endcaps. The collisions will be strong enough to recreate particles and reactions that were present fractions of a second after the Big Bang."

The Big Bang theory is the dominant scientific theory about the origin of the universe. It suggests that the universe was created sometime between 10 billion and 20 billion years ago from a cosmic explosion that hurled matter in all directions.

The conditions that will be reproduced at LHC will correspond to approximately 1/10,000,000,000 of a second after the 'Big Bang' when the temperature was 1,000,000,000,000,000 degrees. Large detectors will electronically register the movement and position of charged particles allowing physicists to analyse the reactions that created them.

The endcap will begin its journey to Switzerland later this month. Dr Jackson added: "We have to be extremely careful that the endcap we have constructed does not become damaged on its journey to Switzerland. We have just completed a trial run of the journey, using a dummy load to represent the endcap. Accelerometers and position-sensitive detectors were positioned on the transport frame to monitor the machine and we tested driving conditions with emergency stops, sleeping policemen, gradients and motorway driving. The results of the test were very encouraging."



Story Source:

The above story is based on materials provided by University of Liverpool. Note: Materials may be edited for content and length.


Cite This Page:

University of Liverpool. "Physicists Step Closer To Understanding Origin Of The Universe." ScienceDaily. ScienceDaily, 22 February 2006. <www.sciencedaily.com/releases/2006/02/060222092931.htm>.
University of Liverpool. (2006, February 22). Physicists Step Closer To Understanding Origin Of The Universe. ScienceDaily. Retrieved December 19, 2014 from www.sciencedaily.com/releases/2006/02/060222092931.htm
University of Liverpool. "Physicists Step Closer To Understanding Origin Of The Universe." ScienceDaily. www.sciencedaily.com/releases/2006/02/060222092931.htm (accessed December 19, 2014).

Share This


More From ScienceDaily



More Matter & Energy News

Friday, December 19, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Building Google Into Cars

Building Google Into Cars

Reuters - Business Video Online (Dec. 19, 2014) Google's next Android version could become the standard that'll power your vehicle's entertainment and navigation features, Reuters has learned. Fred Katayama reports. Video provided by Reuters
Powered by NewsLook.com
AP Review: Nikon D750 and GoPro Hero 4

AP Review: Nikon D750 and GoPro Hero 4

AP (Dec. 19, 2014) What to buy an experienced photographer or video shooter? There is some strong gear on the market from Nikon and GoPro. The AP's Ron Harris takes a closer look. (Dec. 19) Video provided by AP
Powered by NewsLook.com
Navy Unveils Robot Fish

Navy Unveils Robot Fish

Reuters - Light News Video Online (Dec. 18, 2014) The U.S. Navy unveils an underwater device that mimics the movement of a fish. Tara Cleary reports. Video provided by Reuters
Powered by NewsLook.com
3D Printed Cookies Just in Time for Christmas

3D Printed Cookies Just in Time for Christmas

Reuters - Innovations Video Online (Dec. 18, 2014) A tech company in Spain have combined technology with cuisine to develop the 'Foodini', a 3D printer designed to print the perfect cookie for Santa. Ben Gruber reports. Video provided by Reuters
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Space & Time

Matter & Energy

Computers & Math

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins