Large Hadron Collider reaches record 1380 proton bunches per beam

Apr 19, 2012
Physicist Despina Hatzifotiadou inspects the wiring on the ALICE detector at the Large Hadron Collider (Image: CERN)

In just two weeks of operation in "stable beams" mode, the Large Hadron Collider (LHC) has aready reached 1380 proton bunches per beam, the maximum value set for this year. The number of bunches was increased in steps from 624 to then 840 bunches last week, and now from 1092 to 1380.

The machine has also exceeded the maximum peak luminosity – a measure of the instantaneous collision rate – achieved in 2011. The has now reached 3.9 × 1033 collisions per square centimetre per second, while the top value for last year was 3.6 × 1033 cm-2 s-1. Stable beams mode enables the experiments to collect data for physics analysis. 

So far this year the total amount of data delivered to the experiments – the integrated luminosity – is now about 0.6 inverse femtobarn, a measure of accelerator performance equivalent to about 60 trillion collisions. Last year, it took about 12 weeks of operation to reach that number.

This year, the higher collision energy of 4 TeV per beam (compared to 3.5 TeV per in 2011) and the resulting higher number of collisions expected both enhance the machine's discovery potential considerably, opening up new possibilities for searches for new and heavier particles.

Explore further: The unifying framework of symmetry reveals properties of a broad range of physical systems

Related Stories

CMS in 2011: A mountain of particle collision data

Jan 17, 2012

Datasets are the currency of physics. As data accumulate, measurement uncertainty ranges shrink, increasing the potential for discoveries and making non-observations more stringent, with more far-reaching ...

Large Hadron Collider sets world record beam intensity

Apr 22, 2011

(PhysOrg.com) -- Around midnight this night CERN's Large Hadron Collider set a new world record for beam intensity at a hadron collider when it collided beams with a luminosity of 4.67 x 1032cm-2s-1. This exceeds the previous world ...

Large Hadron Collider 7 TeV experiment on March 30

Mar 23, 2010

(PhysOrg.com) -- With beams routinely circulating in the Large Hadron Collider at 3.5 TeV, the highest energy yet achieved in a particle accelerator, CERN has set the date for the start of the LHC research ...

Large Hadron Collider sets new power world record

Nov 30, 2009

(PhysOrg.com) -- CERN's Large Hadron Collider has today become the world's highest energy particle accelerator, having accelerated its twin beams of protons to an energy of 1.18 TeV in the early hours of the ...

Large Hadron Collider pauses protons; enters new phase

Nov 04, 2010

(PhysOrg.com) -- Proton running for 2010 in the Large Hadron Collider at CERN came to a successful conclusion today. Since the end of March, when the first collisions occurred at a total energy of 7 TeV, the ...

Recommended for you

What time is it in the universe?

Aug 29, 2014

Flavor Flav knows what time it is. At least he does for Flavor Flav. Even with all his moving and accelerating, with the planet, the solar system, getting on planes, taking elevators, and perhaps even some ...

Watching the structure of glass under pressure

Aug 28, 2014

Glass has many applications that call for different properties, such as resistance to thermal shock or to chemically harsh environments. Glassmakers commonly use additives such as boron oxide to tweak these ...

Inter-dependent networks stress test

Aug 28, 2014

Energy production systems are good examples of complex systems. Their infrastructure equipment requires ancillary sub-systems structured like a network—including water for cooling, transport to supply fuel, and ICT systems ...

Explainer: How does our sun shine?

Aug 28, 2014

What makes our sun shine has been a mystery for most of human history. Given our sun is a star and stars are suns, explaining the source of the sun's energy would help us understand why stars shine. ...

User comments : 2

Adjust slider to filter visible comments by rank

Display comments: newest first

A2G
3 / 5 (4) Apr 19, 2012
Awesome research and I am all for it...We must do all we can to confirm that there are in fact no snipes.
Blakut
not rated yet Apr 21, 2012
And after they find the higgs boson, the LHC will get its funds from TV series like "Ham vs Beam" and "Myth Busters: Putting your hand in the particle stream.