This site uses cookies. By continuing to use this site you agree to our use of cookies. To find out more, see our Privacy and Cookies policy.
Skip to the content

Free weekly newswire

Sign up to receive all our latest news direct to your inbox.

Physics on film

100 Second Science Your scientific questions answered simply by specialists in less than 100 seconds.

Watch now

Bright Recruits

At all stages of your career – whether you're an undergraduate, graduate, researcher or industry professional – brightrecruits.com can help find the job for you.

Find your perfect job

Physics connect

Are you looking for a supplier? Physics Connect lists thousands of scientific companies, businesses, non-profit organizations, institutions and experts worldwide.

Start your search today

Tag archives: LHC

Protons return to the Large Hadron Collider

Aerial view of the LHC

Up and running: The first proton beams have been injected into the LHC in preparation for its second run. (Courtesy: Maximilien Brice/CERN)

By Hamish Johnston

The first proton beams of the second run of the Large Hadron Collider (LHC) were circulated earlier today. Travelling in opposite directions around the collider at CERN in Geneva, each beam was injected at 450 GeV. If all goes well over the next few days, the energy of each beam will be increased to the operating energy of 6.5 TeV.

(more…)

Posted in General | Tagged | 3 Comments | Permalink
View all posts by this author  | View this author's profile

Isaac Newton’s Good Friday, art meets physics and our favourite April Fool gags

APOD image of artwork "Mooooonwalk"

Suiting up for the Moon – an artwork aptly titled “Mooooonwalk”. (Courtesy: APOD/ Robert Nemiroff/Michigan Technological University)

By Hamish Johnston and Tushna Commissariat

As it’s Good Friday today, it can only mean that this week’s Red Folder will include a selection of the best physics-related April Fool jokes from earlier this week. Fermilab’s daily e-bulletin Fermilab Today had an entire joke edition up in the morning – their lead story was probably our favourite as the lab announced its new breakfast cereal dubbed “Neutrin-Os”, but their new day spa sounds pretty good too. CERN went for the funny if slightly obvious Star Wars joke, confirming the existence of the Force, but a slightly more subtle joke came earlier in the week from CERN Bulletin, which ran a story about CERN’s computer-security department handing out prizes for best password – we are still not quite sure if they were joking or not! Astronomy Picture of the Day had a truly fantastic image (see above) of a Lunar Grazing Module described as a “multipurpose celestial bovine containment system”.

(more…)

Posted in The Red Folder | Tagged , , , , , | 2 Comments | Permalink
View all posts by this author  | View this author's profile

Electrical fault delays LHC start-up

Back down the tunnel: technicians will soon be repairing an electrical fault somewhere along the LHC (Courtesy: CERN/Maximilien Brice)

Back down the tunnel: technicians will soon be repairing an electrical fault somewhere along the LHC. (Courtesy: CERN/Maximilien Brice)

By Hamish Johnston

Today I was planning to write a cheerful blog celebrating the first circulating proton beams in the Large Hadron Collider (LHC), but sadly the particle gods are not smiling down on CERN this week. Accelerator physicists in Geneva have identified an electrical fault in one of the collider’s magnet circuits and plans to restart the giant machine this week have been put on hold – possibly for several weeks.

(more…)

Posted in General | Tagged , | Leave a comment | Permalink
View all posts by this author  | View this author's profile

Last views of a huge particle detector before the Large Hadron Collider comes to life

Photograph of the author at the CMS detector at CERN

My photo opportunity: this could be the last we will see of the CMS for three years.

By Tushna Commissariat at CERN

Regular readers of Physics World will know that I am currently visiting the CERN particle physics lab in Geneva, ahead of the restart of the Large Hadron Collider (LHC) in the coming weeks. My first stop yesterday afternoon was a press conference in which CERN’s director-general Rolf Heuer and other leading physicists briefed us about “Run 2” and what researchers are hoping to discover. You can read about what they had to say here: “Large Hadron Collider fires up in a bid to overturn the Standard Model“.

I managed to squeeze in a quick last-minute visit to the Compact Muon Solenoid (CMS) detector before it is sealed up tight for the next three years. My host was CMS communications officer Achintya Rao, who took me and a few others deep underground into the bowels of the CMS – and what a sight it was!

(more…)

Posted in General | Tagged , , , | Leave a comment | Permalink
View all posts by this author  | View this author's profile

The physics of pop music, a stroll around the LHC, 3D illuminations in Bath and more

Pop physics: some of the subgenres used in a study of pop music (Courtesy:  Gamaliel Percino, Peter Klimek and Stefan Thurner/PLOS ONE DOI: 10.1371/journal.pone.0115255)

Pop physics: some of the subgenres used in a study of pop music. (Courtesy: Gamaliel Percino, Peter Klimek and Stefan Thurner/PLOS ONE 10.1371/journal.pone.0115255)

By Hamish Johnston

The take-home message from this week’s Red Folder is that “Scientists just discovered why all pop music sounds exactly the same”, at least according to an article on Music.Mic. The report describes a paper published in PLOS ONE by Stefan Thurner – a physicist at the Santa Fe Institute – and colleagues at the Medical University of Vienna.

The researchers used the online music database Discogs to sort the material on 500,000 albums into 15 musical genres and 374 subgenres. You can see examples of some of the subgenres in the above image. They discovered that as a genre of music becomes more popular, it becomes less complex as all its constituent artists and songs start sounding the same. Music.Mic’s Tom Barnes explains in his article how this ties in with various trends in the music industry, where he says “uniformity sells”.

(more…)

Posted in The Red Folder | Tagged , , | 3 Comments | Permalink
View all posts by this author  | View this author's profile

Become a CERN physicist in your bedroom

By James Dacey

Image of particle collision within the ATLAS detector

Particle collision within the ATLAS detector. (Courtesy: CERN/Higgs Hunters)

Who discovered the Higgs boson? Was it Peter Higgs and a combination of other great minds? The experimentalists at CERN who analysed reams of data? The magnificent machinery of the Large Hadron Collider (LHC) itself? By the time that the next great breakthrough in particle physics comes along, the debate about who makes the discovery could become even more complex. That’s because a new citizen-science project is encouraging anyone with an Internet connection to search for new curiosities in the Higgs data.

Higgs Hunters” launched this week and invites the public to sift through collision images from the LHC’s ATLAS detector. The task at hand is to look for the paths of charged particles that seem to appear out of thin air in what are known as off-centre vertices. As explained on the Higgs Hunters website, “some scientists think the Higgs could break apart into exotic particles entirely new to science”. On the Higgs Hunters website, citizen scientists help to count the number of particle tracks and can notify the science team if they spot anything out of the ordinary.

(more…)

Posted in General | Tagged , , , , , | 2 Comments | Permalink
View all posts by this author  | View this author's profile

Physics World 2014 Focus on Big Science is out now

By Michael Banks

This year has been a special one for the CERN particle-physics lab near Geneva as it turns 60 years old. It was back in 1954 when the CERN convention was ratified by its first 12 member states and the European Organization for Nuclear Research was officially established.

Cover of Physics World 2014 Focus on Big ScienceThe past few months have seen CERN celebrate in style with a whole host of symposia, meetings, plays, films, concerts and other events being held at the lab and at member states across Europe.

Indeed, researchers at CERN have had a lot to celebrate recently, following the discovery of the Higgs boson at the lab in 2012, and they will be hoping for yet more success when the Large Hadron Collider (LHC) switches on next year following a two-year upgrade and maintenance programme.

In the latest Physics World focus issue on “big science” we look at what has been going on at CERN during the shutdown as the lab gears up to hunt new particles beyond the Higgs boson. Once back online, the LHC will be generating even more data than in its previous run and this focus issue also investigates how researchers are going to deal with the huge volumes of information that will be generated at many upcoming facilities, as well the need to train the next generation of researchers to use them.

(more…)

Posted in General | Tagged , , | 1 Comment | Permalink
View all posts by this author  | View this author's profile

A scientific pyramid scheme, symmetry through the ages, why physics students are “standing a little taller” and more

Pyramid power: this lovely pyramid has nothing to do with postdocs. It is model of a much larger  Sierpinski tree that can be found on London’s South Bank.

Pyramid power: this lovely object has nothing to do with postdocs. It is a simpler version of a much larger Sierpinski tree that can be found on London’s South Bank.

By Hamish Johnston

Just this week six people were convicted in Bristol of crimes related to running a pyramid scheme. This involves taking money from lots of new investors and giving it to a smaller number of investors who signed up earlier – until the pyramid collapses. Is the current model for training scientists a pyramid scheme of sorts? That is the claim in a piece on the US’s National Public Radio (NPR) website written by Richard Harris.

(more…)

Posted in The Red Folder | Tagged , , , , | 1 Comment | Permalink
View all posts by this author  | View this author's profile

Is desperation for new physics clouding our vision for new colliders?

By Hamish Johnston

This month marks the 60th anniversary of CERN and to kick-off our coverage here at physicsworld.com, I’m highlighting an essay on the future of collider physics that has just been written by Nobel laureate Burton Richter called “High energy colliding beams; what is their future?“.

Burton Richter

Burton Richter warns against desperation. (Courtesy: Stanford University)

Richter shared his 1976 Nobel prize with Samuel Ting for their independent discoveries of the J/ψ meson. He knows his particle colliders, having helped to design and build the world’s first collider in the late 1950s at Stanford University and later directing the Stanford Linear Accelerator Center for 15 years.

Richter believes that the international community is not facing up to tough decisions that must be made about what to do when the Large Hadron Collider (LHC) is retired sometime in the early 2030s. He thinks that “the perspective of one of the old guys might be useful”.

Planning the next huge collider involves the co-operation of three main groups of physicists: those who design and build the accelerators; those who design and build the experiments; and the theoretical physicists who work out what the experiments are looking for. Richter thinks that this is not going well at the moment.

(more…)

Posted in General | Tagged , , , | 5 Comments | Permalink
View all posts by this author  | View this author's profile

Rebirth of the SSC?

The derelict site of the Superconducting Super Collider

Physicists entering the derelict site of the Superconducting Super Collider in 2011.

By Michael Banks

Following the closure of Fermilab’s 1 TeV Tevatron particle collider near Chicago in 2011 – and with no similar facility being planned to replace it in the US – many physicists in the country felt not surprisingly concerned that America was losing its place at the “energy frontier”. That baton had already passed to the CERN particle-physics lab near Geneva when its Large Hadron Collider (LHC) fired up in 2008, and with collisions set to restart there next year at 13 TeV, the US’s day looked certain to have passed.

(more…)

Posted in General | Tagged , , , | 6 Comments | Permalink
View all posts by this author  | View this author's profile
WordPress Appliance - Powered by TurnKey Linux