LHC

Can the Large Hadron Collider be ‘world’s biggest rain meter’

The LHC is not just the world’s most powerful particle accelerator, it could also be its biggest rain meter, scientists say.

They are investigating tiny changes in the length of the collider’s 27km-circumference ring, which occur on a daily and a seasonal basis.

The short cycle is explained by normal tidal forces.

But the winter-summer pattern which affects the huge underground facility is not so obvious.

Except researchers think they can now show that winter rain and snow is gravitationally pulling on the ring.

“My hypothesis is that in winter there’s a lot more water in the ground, and even snow sitting on the ground. So, basically, this mass pulls on the ring. And when that extra mass melts away and evaporates away in summer – the ring stretches a bit,” said Rolf Hut from Delft University of Technology, Netherlands.

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Thursday, April 21st, 2016 Large Hadron Collider, LHC Comments Off on Can the Large Hadron Collider be ‘world’s biggest rain meter’

Large Hadron Coliider celebrates 5 years of not destroying the world!!

LHC Atlas

LHC Atlas

Five years ago, at breakfast time, the world waited anxiously for news from CERN, the European Organization for Nuclear Research. The first nervy bunch of protons were due to be fired around the European lab’s latest and biggest particle accelerator, the Large Hadron Collider (LHC), as it kicked into action.

Some “mercifully deluded people” – as Jeremy Paxman put it – feared the LHC would do no end of mischief. There was talk of planet-swallowing black holes, the transformation of the Earth into a new state of “strange” matter, and even the prospect of the obliteration of the entire universe. But for those of more sensible dispositions, the LHC’s first beam was an occasion for great excitement.

As the protons sped all the way round the 27km tunnel under the countryside between Lake Geneva and the Jura Mountains, thousands of physicists and engineers celebrated decades of hard work, incredible ingenuity and sheer ambition. Together they had created the largest-ever scientific experiment.

After the LHC was switched on, project leader Lyn Evans said, “We can now look forward to a new era of understanding about the origins and evolution of the universe.”

Operating a massive particle accelerator requires much more than flicking a switch – thousands of individual elements have to all come together, synchronised in time to less than a billionth of a second.

University College London’s physicist Jon Butterworth recalls a “particularly bizarre memory” from that day. Relaxing in a Westminster pub after an exhausting LHC event in London, Butterworth found he could follow live updates from his own ATLAS experiment on the pub’s TV.

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Wednesday, September 11th, 2013 Big Bang Machine, CERN, Large Hadron Collider, LHC, particle accelerator Comments Off on Large Hadron Coliider celebrates 5 years of not destroying the world!!

Large Hadron Collider D-meson study wraps up antimatter ‘flip’ story

Researchers at the Large Hadron Collider have witnessed particles called D-mesons flipping from matter into antimatter and back.

Antimatter is identical to matter, but with opposite electric charge.

Such “oscillations” are well known among three other particle types, but this is the first time D-mesons have been seen doing it in a single study.

The team behind the collider’s LHCb detector have put their results on the Arxiv repository.

The manuscript will be published in Physical Review Letters.

In the complicated zoo of subatomic physics, particles routinely decay into other particles, or spontaneously change from a matter type to their antimatter counterparts.

This “oscillation” forms an important part of the theory that attempts to tame the zoo – the Standard Model.

Mesons are part of a large family of particles made up of the fundamental particles known as quarks. This is a nice moment, it’s a sort of completeness Chris Parkes University of Manchester

The protons and neutrons at the centres of the atoms of matter we know well are each made up of three such quarks.

Mesons, on the other hand, are made of just two – specifically one quark and one antimatter quark.

Theory holds that four members of the meson family can undergo the matter-antimatter oscillation – the matter and antimatter quarks both flip to their opposites.

Three particle types – K-mesons and two types of B-mesons had been caught in the act before.

LHCb has already been intimately involved in refining those prior measurements; in March 2012, the team confirmed earlier oscillation observations of a meson called Bs, and published the result in Physics Letters B.

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Monday, March 4th, 2013 CERN, Large Hadron Collider, LHC Comments Off on Large Hadron Collider D-meson study wraps up antimatter ‘flip’ story

New type of matter possibly produced by the Large Hadron Collider

Washington:Collisions at the Large Hadron Collider may have created a new type of matter known as colour-glass condensate, scientists believe.

Collisions between protons and lead ions at the LHC near Geneva, Switzerland have resulted in surprising behaviour in some of the particles created by the collisions, Massachusetts Institute of Technology (MIT) news reported.

When beams of particles crash into each other at high speeds, the collisions yield hundreds of new particles, most of which fly away from the collision point at close to the speed of light.

However, the Compact Muon Solenoid (CMS) team at the LHC found that in a sample of 2 million lead-proton collisions, some pairs of particles flew away from each other with their respective directions correlated.

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Friday, November 30th, 2012 Large Hadron Collider, LHC Comments Off on New type of matter possibly produced by the Large Hadron Collider

Higgs boson particle discovery found at LHC

Cern scientists reporting from the Large Hadron Collider (LHC) have claimed the discovery of a new particle consistent with the Higgs boson.

The particle has been the subject of a 45-year hunt to explain how matter attains its mass.

Both of the Higgs boson-hunting experiments at the LHC see a level of certainty in their data worthy of a “discovery”.

More work will be needed to be certain that what they see is a Higgs, however.

Prof Stephen Hawking tells the BBC’s Pallab Ghosh the discovery has cost him $100

The results announced at Cern (European Organization for Nuclear Research), home of the LHC in Geneva, were met with loud applause and cheering.

Prof Peter Higgs, after whom the particle is named, wiped a tear from his eye as the teams finished their presentations in the Cern auditorium.

“I would like to add my congratulations to everyone involved in this achievement,” he added later.

“It’s really an incredible thing that it’s happened in my lifetime.”

Prof Stephen Hawking joined in with an opinion on a topic often discussed in hushed tones.

“This is an important result and should earn Peter Higgs the Nobel Prize,” he told BBC News.

“But it is a pity in a way because the great advances in physics have come from experiments that gave results we didn’t expect.”

read the full story from BB news http://www.bbc.co.uk/news/world-18702455

Tuesday, July 10th, 2012 Higgs Boson, Large Hadron Collider, LHC Comments Off on Higgs boson particle discovery found at LHC

Could the Large Hadron Collider really act as telephone for talking to the past?

Spurs-a-jingle boffins in America say that the Large Hadron Collider (LHC), most puissant matter-rending machine ever assembled by humanity, may also turn out to be the first time machine ever built. According to the physicists’ calculations, instruments at the mighty particle-smasher may soon detect signs of “singlets” which it has not yet generated, sent back from their creation in the future.

“Our theory is a long shot,” admits physics prof Tom Weiler, “but it doesn’t violate any laws of physics or experimental constraints.”

According to calculations by Weiler and his colleague Chui Man Ho, if the LHC manages to generate the long-theorised but never actually seen Higgs Boson (aka “the god particle” – confirmation of its existence was a major reason for the Collider’s construction) it should also create another mysterious particle dubbed the “Higgs singlet”*. These singlets, according to Weiler and Ho, might be able to move in a fifth dimension transverse to our existing four-dimensional continuum – thus they could pop out of our universe and subsequently re-enter it elsewhere in time.

This thinking relies on the idea that the 4-D continuum we can perceive exists within a 10- or 11-dimensional universe, rather as a flat two-dimensional membrane could float suspended in normal three-d space. Versions of the so-called “M-theory” in physics hold that this is the case, but that almost all kinds of forces, waves, particles etc are stuck to the four-dimensional membrane, aka the “brane” for short.

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Thursday, March 17th, 2011 Large Hadron Collider, LHC Comments Off on Could the Large Hadron Collider really act as telephone for talking to the past?

LHC experiments bring new insight into primordial universe

Geneva, 26 November 2010. After less than three weeks of heavy-ion running, the three experiments studying lead ion collisions at the LHC have already brought new insight into matter as it would have existed in the very first instants of the Universe’s life.

The ALICE experiment, which is optimised for the study of heavy ions, published two papers just a few days after the start of lead-ion running. Now, the first direct observation of a phenomenon known as jet quenching has been made by both the ATLAS and CMS collaborations. This result is reported in a paper from the ATLAS collaboration accepted for publication yesterday in the scientific journal Physical Review Letters.

A CMS paper will follow shortly, and results from all of the experiments will be presented at a seminar on Thursday 2 December at CERN. Data taking with ions continues to 6 December.

Read the full article from CERN here

Friday, November 26th, 2010 CERN, Large Hadron Collider, LHC Comments Off on LHC experiments bring new insight into primordial universe

Researchers at the Large Hadron Collider (LHC) are getting set to create the Big Bang on a miniature scale.

Researchers at the Large Hadron Collider (LHC) are getting set to create the Big Bang on a miniature scale.

Since 2009, the world’s highest-energy particle accelerator has been smashing together protons, in a bid to shed light on the fundamental nature of matter.

But now the huge machine will be colliding lead ions instead.

The experiments are planned for early November and will run for four weeks.

The LHC is housed in a 27km-long tunnel on the Franco-Swiss border and is managed by the European Organization for Nuclear Research (Cern).

The collider consists of four different experiments and one of them, ALICE, has been specifically designed to smash together lead ions.

The goal of these collisions is to investigate what the infant Universe looked like. Colliding protons at high energies was aimed at other aspects of physics, such as finding the elusive Higgs boson particle and signs of new physical laws, such as a framework called supersymmetry.

Cern’s spokesman James Gillies told BBC News that besides ALICE, the ATLAS and Compact Muon Solenoid (CMS) experiments will also be temporarily colliding ions.

Big Bang

He said the tests could provide an insight into the conditions of the Universe some 13.7 billion years ago, just after the Big Bang.

They will look at the Universe fractions of a second after a tiny but very dense ball of energy exploded to create the cosmos as we know it today.

Continue reading the main story

“Start Quote

At the temperatures generated, even protons and neutrons will melt, resulting in a hot dense soup of quarks and gluons”

End Quote David Evans University of Birmingham, UK

Scientists believe that it was back then that a special state of matter existed, different from the matter the Universe is formed of now.

“Matter exists in various states: you can take a material like water and if you deep freeze it, it’ll be solid, and if you put it on a table, it’ll turn into a liquid, and if you put it into a kettle, it’ll turn into a gas,” said Dr Gillies.

“It’s all the same stuff, but those are different states of matter. And if you take materials into laboratories, you can pull the electrons off the atoms and you have another state of matter which is called plasma.”

But at the very beginning of the Universe, there might have been yet another state of matter. Physicists have dubbed this “stuff” the quark-gluon plasma.

“And this is the state of matter you have if you’re able to effectively melt the nuclear matter that makes up atoms today, releasing the things that are inside, which are quarks and gluons,” Dr Gillies explained.

read the full article here

Monday, November 8th, 2010 Big Bang Machine, CERN, Large Hadron Collider, LHC Comments Off on Researchers at the Large Hadron Collider (LHC) are getting set to create the Big Bang on a miniature scale.