Tag archives: LHC
By Michael Banks
You may remember that late last year CERN teamed up with Google Street View to allow users to go on a virtual tour of the lab, including 12 km of the 27 km Large Hadron Collider (LHC) tunnel plus the caverns that house the ATLAS, CMS, LHCb and ALICE experiments.
This involved Google‘s Zurich team spending two weeks at CERN in 2011 photographing the LHC using a “Street View Trike” – a specially created camera-mounted bike.
Well, what we didn’t known then was that Stefan Lüders, CERN’s computer security officer, had decided to stash about 20 LEGO figurines around the CERN computing centre before the cameras rolled.
By Michael Banks
All eyes will be on Stockholm next week as the 2013 Nobel Prize for Physics is announced. One of the frontrunners for the prize in the minds of the Royal Swedish Academy of Sciences will surely be the discovery last year of the Higgs boson at CERN’s Large Hadron Collider (LHC).
But the LHC story is far from over and in the latest Physics World focus issue on “big science” find out how the LHC will hunt for new particles beyond the Higgs boson once the collider restarts in 2015 following an 18-month repair and upgrade programme at the Geneva-based lab.
All full members of the Institute of Physics will receive a print edition of the focus issue along with their copy of the October issue of Physics World, but everyone can access a free digital edition. The focus issue also looks at how particle physicists are already thinking about what could come after the LHC, with bold plans for a 80–100 km proton–proton collider. There are even plans for a collider based on lasers, with an international team looking at creating an array of “fibre lasers” to be used as a future “Higgs factory”.
By Hamish Johnston
It’s a story with a hint of both “man bites dog” and “dog bites man” about it.
Physicists working on the CMS and LHCb experiments at CERN have independently seen an incredibly rare decay of a particle – a strange B meson decaying into two muons. The odds of this meson decaying in this particular way is about one in a billion, making the joint discovery a triumph of experimental particle physics. And it is officially a discovery. That’s because when data from the two experiments are combined the observation has a statistical significance of greater than 5σ, which is the gold standard in particle physics.
By Matin Durrani
How well would you do if someone asked you to explain the Higgs boson or the Large Hadron Collider (LHC) at CERN?
If you’re a physicist, you’ll probably find it hard enough. But if you’ve never done any physics in your life, things must surely be trickier still, more so if a film crew from Physics World has shoved a camera up your nose.
These two short videos show the results of a straw poll of randomly selected visitors at last summer’s Bristol International Balloon Fiesta when we asked them to describe the Higgs boson and the LHC.
The reason we were at the fiesta is that we were making a separate film about a project by Bristol University physicist Dave Cussans where school students were measuring cosmic rays during a hot-air balloon flight – it being the centenary of Victor Hess’s discovery of these rays in a balloon flight in central Europe.
By James Dacey
I must confess that I was not aware of this partnership, and I must admit it’s not a partnership I would have seen coming. CERN has teamed up with the organization behind the Eurovision Song Contest, in awarding grants to two multimedia companies to develop content that can spark the scientific curiosity of “tweens”.
Okay, let’s back up a second and define a few terms in this equation. Tweens are described by CERN as children aged 8 to 12; not quite teenagers but no longer big babies either. My teacher friends will shoot me down in flames for this cod-pedology but I guess this age group is old enough to be excited by science but not yet old enough to start truly engaging with scientific concepts.
By Hamish Johnston
Recently I had the pleasure of speaking to CERN’s Steve Myers who is supervising the herculean task of upgrading the superconducting magnets that guide protons around the Large Hadron Collider (LHC).
By James Dacey
It may have become a household name in recent years, but for many the Large Hadron Collider is still a mysterious behemoth lurking somewhere beneath Switzerland. Or is it France?
A new exhibition will seek to bring the technology and the sense of scientific discovery of the LHC to those who have not made the trip to the facility itself. Collider: step inside the world’s greatest experiment will open on 13 November at the Science Museum in London, and run for six months.
By Tushna Commissariat
Are you suffering from particle-collider withdrawal symptoms now that the LHC has begun its long shutdown? If so, you will be pleased to learn that you can focus your attention elsewhere.
The International Linear Collider Collaboration has posted an updated version of its 2013 Technical Design Report on the arXiv preprint server. It’s a short and sweet overview of the collider’s design, including “detailed descriptions of the accelerator baseline design for a 500 GeV e+e llinear collider, the R&D program that has demonstrated its feasibility, the physics goals and expected sensitivities, and the description of the ILD and SiD detectors and their capabilities”.
By James Dacey
My colleague, Hamish Johnston, has just returned from a trip to CERN, where he was granted access to the insides of the Large Hadron Colider (LHC), which is currently being upgraded. He has shared some great photos from his trip on the Physics World Facebook page, including some snaps of the interior of the detector experiments.
By Hamish Johnston at CERN
Today I had the immense good fortune of seeing the insides of the CMS detector at CERN.
The huge detector was pulled open and I could see all the various layers that are used to track the vast numbers of particles that are produced when protons collide at the Large Hadron Collider.
Unlike earlier photos of the detector that were taken when it was being built, the beamline is still intact as it passes through the CMS – a plain black conduit suspended many metres above the floor. You can see the beamline poking out from the centre of the detector in the photo on the right.
Imperial College’s Jim Virdee was our tour guide, and he told us how several military technologies from the former Soviet Union have been put to good use in the detector. These include brass shell casings that were melted down to make components for the detector.