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Tag archives: particle accelerator

The accelerator tree bears fruit

Photograph of a tree in Salt Lake City

Accelerator science is blossoming in Salt Lake City.

By Hamish Johnston at the APS April Meeting in Salt Lake City

This morning Mei Bai of the Jülich Institute for Nuclear Physics in Germany used a lovely phrase during her talk at the APS April Meeting. She showed a slide called the “accelerator tree”‘, which refers to a paper by Ugo Amaldi called “The importance of particle accelerators“.

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The unexpected benefit of a malfunctioning magnet at RHIC

Inside the RHIC tunnel

Beam me down: in the RHIC tunnel. (Courtesy: Tushna Commissariat)

By Tushna Commissariat in New York City, US

I’m not one to rejoice in someone else’s misfortune, but I must admit that I couldn’t help but be a bit pleased when I heard that the Relativistic Heavy Ion Collider (RHIC) at the Brookhaven National Laboratory (BNL) had a malfunction last Friday. You see, I happened to be visiting the collider and its detectors yesterday, and if a malfunctioning superconducting magnet had not shorted a diode last Friday, I would not have had the chance to go down into the collider tunnel, which was a great experience.

RHIC – which, along with the Large Hadron Collider at CERN, is the only other detector capable of colliding heavy ions and is, in fact, the only spin-polarized collider in the world – has been running since the year 2000, and accelerator director Wolfram Fischer tells me that I am rather “lucky” as “failed magnets are very rare”. Indeed, he said that after initial teething problems when RHIC was switched on, this was the first such magnet failure that has occurred in the past 15 years. But fear not, the RHIC maintenance crew is already hard at work – the diode will soon be replaced and the collider should be up and running again in the next few days.

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Space-station toilet tour, the Louvre’s particle accelerator and more

 

By Tushna Commissariat

I’m sure that many of us, while watching videos of astronauts on board the International Space Station (ISS), floating around with their halo-like hair, have given much thought to how they shower, wash their hair, brush their teeth and, indeed, poop and pee! Well, you can stop stretching your imagination and take a look for yourself – we spotted this story on the Slate website, where you can see the latest videos from the European Space agency, where Italian astronaut Samantha Cristoforetti, who is currently on the ISS, gives us a tour of both the toilet (above) and the “shower” area (below). She even demonstrates exactly how to wash your hair in space – it looks rather fuss-free if you ask me!

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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”.

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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!

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Extra dimensions, other-worldly football, the ISS at night and more

 

By Tushna Commissariat

This week, we came across the above video on “extra dimensions”, in which physicist Don Lincoln talks about the possible physical reality of such dimensions and why we need them. The video begins with Lincoln pointing out just how weak a force gravity is, especially when compared with, say, magnetism. He then goes on to talk about how gravity may exist in more than the three dimensions we experience, making sure to point out that these “extra dimensions” are not of the Hollywood variety in which a different reality may exist. This video is part of Fermilab’s “Big Mysteries” video series – be sure to take a look at the rest.

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Proton therapy is for the masses

Drawing of the proposed proton-therapy facility

Drawing of the proposed proton-therapy facility. (Courtesy: Umar Masood)

By Hamish Johnston

In the 25th anniversary issue of Physics World, I made the bold assertion that laser acceleration will bring particle therapy to the masses by removing the need for treatment centres to have large and expensive accelerators. Instead, therapeutic beams of protons and other charged particles will be made using compact and relatively inexpensive lasers.

Now, medical physicist Umar Masood and colleagues at the Helmholtz-Zentrum Dresden-Rossendorf (HZDR) and the University of Dresden have published plans for a laser-driven proton-therapy facility.

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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.

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CERN creates new office for medical research

Steve Myers (far left) and colleagues at the LEIR facility

Steve Myers (far left) and colleagues at the LEIR facility.

By Hamish Johnston

Earlier this month my colleague Tami Freeman was at CERN where she had a tour of what will soon be the Geneva-based lab’s first major facility for biomedical research. Called BioLEIR, the facility is now being created by modifying the existing Low Energy Ion Ring (LEIR).

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Colliding exhibits, influential researchers, edible particle-detectors and more

Collider exhibition at London's Science Museum (Courtesy: Nick Rochowski for the Science Museum)

The “Collider” exhibition at London’s Science Museum. (Courtesy: Jennie Hills / Science Museum)

 

By Matin Durrani and Tushna Commissariat

If you’re in the tiny minority of people whose job title says “particle physicist”, chances are you’ll have been to CERN at least once in your career to help build a detector, analyse some collision data or muse in the cafeteria over supersymmetry (or the apparent lack of it so far). But for the rest of the world, going to the Geneva lab is simply not on the agenda, which is one reason why the Science Museum in London has this week unveiled a big new exhibition devoted to CERN’s Large Hadron Collider. Entitled simply Collider, the exhibition “blends theatre, video and sound art with real artefacts from CERN” that will, say organizers, “recreate a visit to the famous particle-physics laboratory”.

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