Technology
Forget the Large Hadron Collider. All hail Cern’s new, straight-line atom smasher
One of the super-cooled tubes that make up the Large Hadron Collider
Sunday, 18 July 2010
After decades of bending atoms around giant rings and smashing them apart in search of the secrets of the universe, scientists at Cern, the European particle physics laboratory outside Geneva, are reviving a 1960s technology and going straight.
Their latest ring, the 27km Large Hadron Collider (LHC), only got up to speed in March, yet physicists meet in Paris this week to discuss plans for a new $6.7bn (£4.4bn) experiment – the International Linear Collider (ILC), which they hope to start building in 2012.
The new machine will be a straight-line tunnel, 31km long, and will use super-conducting magnets to accelerate electrons and positrons, their antimatter equivalents, towards each other at close to the speed of light.
“To explore what the LHC discovers in more detail, you need an electron collider,” says Professor Brian Foster, the European director of the ILC project. Part of the report to the Paris conference will be “a blueprint for how you would set up an ILC lab”. More than 700 people at 300 laboratories and universities around the world are already working on the accelerator. The only other high-energy linear electron smasher is the Stanford Linear Accelerator in California, a 3.2km track built in 1962.
Both the existing LHC and the planned ILC are trying to solve fundamental physics questions, including – what happened in the Big Bang? Where did all the antimatter go? How many dimensions does space have? Why are there so many different sub-atomic particles? And, most famously, what does a Higgs particle look like?
While the 12 subatomic components of matter have all been found, including quarks and neutrinos, the Higgs has proved more elusive. The leading theory of how the universe works says that the Higgs gives matter mass, and therefore gravity. Its discovery could point the way to unifying the two great 20th-century theories of physics – quantum and general relativity.
It may also help solve the mystery of the missing 96 per cent of the universe. When astronomers estimate the mass of galaxies, including stars, planets, nebulas and black holes, they find that they are so light they should fly apart as they spin. The extra mass needed to keep them together is thought to be hidden in as yet undiscovered “dark matter”.
Although a location for the new device has not been decided, Cern is a likely contender, if only because most of the physicists who might want to use it are already there, along with the infrastructure they need.
Cern’s LHC uses protons made from atoms of the lightest element, hydrogen, by stripping off their electrons in a strong magnetic field, and accelerating them to 99.9999991 per cent of the speed of light.
By the time they enter the LHC, Einstein’s equation, E=mc2, is in play. Since the protons can’t be made to go any faster, pumping additional energy in makes them more massive. In the LHC, they can be pushed to 7 trillion electron volts. When two beams, rotating in opposite directions, cross, the energy released from a single pair could be as high as 14 TeV.
But proton crashes are “dirty”. “It’s like colliding two oranges together at 45mph,” says Professor Foster. “Sometimes the pips hit each other, but usually it’s just a spray of juice.” The pips, in his analogy, are the trio of quarks that make up a proton and which cause the most interesting smashes. Typically, only one quark from each proton in a collision will hit head on, while the other four will miss each other.
Worse, although scientists know how much energy they’ve put into each proton, they don’t know how it is distributed between the pips. One quark could have most of it, or all three could have roughly equal amounts. At best, researchers can tell the maximum amount of energy a collision might involve. Still, the LHC produces billions of bangs a second so they know roughly what energy levels give them interesting results.
But for a more precise exploration of the high-energy frontier, they will need the ILC. Electrons are 2,000 times smaller than protons, and do not have an internal structure. When two of them run into each other, the energy released is known exactly.
But electrons are not perfect. When particles are bent by magnetic fields, they emit X-rays. For relatively massive protons, this is not a problem, but for the lighter electrons it’s a huge obstacle. Most of the energy pumped into an electron in the LHC would merely replace that lost to radiation.
And so, scientists are returning to the linear design of half a century ago. The exact specifications will have to wait until the LHC has identified which energy ranges are of interest, but the ILC as envisioned will have energy levels of around 0.5TeV.
Construction of the new accelerator is expected to take seven years. No one would be surprised if, during that time, plans emerge for an even more powerful, next-generation accelerator.
Panasonic’s vision of the future is in 3D – and all shades of green
The Japanese giant wants to sell us its hi-tech stereoscopic TV screens, but its heart lies in its eco principles – and the humble battery
Sunday, 12 September 2010
The acrobat was performing the Spanish web, winding down from the ceiling on a red ribbon in a move many Britons will remember from an advert promoting BBC1. But the people clustered around the stage weren’t watching Berlin’s Cosmic Artists directly. Instead, they peered through special spectacles at TV screens showing the action live in 3D.
The giants of the television hardware business, Samsung, Sony, LG, Toshiba and Panasonic, were all pushing stereoscopic screens (and accompanying goggles) at the IFA consumer electronics show in Berlin last week. Panasonic, for example, featured not only the live acrobats, but 3D clips from the Blue Man Group, Universal’s Despicable Me, a promo for the London Olympics, and, on a more high-brow note, a trailer for the forthcoming Wim Wenders film about the late dancer Pina Bausch.
Crucially, after Avatar’s success, film-makers and broadcasters are piling into the technology. A flurry of films including Alice in Wonderland, Shrek Forever After and Toy Story 3 followed the sci-fi blockbuster. And as Sky says of its new channel, due in homes before Christmas: “3D is the next revolution in television.”
The new technology is not just for content professionals, either. Panasonic’s headline-grabbing gadget this year is a 3D home camcorder – a world first – for under €1,500 (£1,250). Wedding videos will never be the same.
But a bigger contributor to the Osaka company’s bottom line will be the one million 3D sets it expects to sell. “It’s like the switch to colour,” says Panasonic’s president, Fumio Ohtsubo. “Once they’ve tried colour, no one wants to go back to monochrome. When you compare it with the pleasure of 3D, the inconvenience of wearing glasses is next to nothing.”
In a Spartan conference room above one of the vast exhibition halls at Berlin’s Messe complex, Mr Ohtsubo is holding forth in Japanese, his voice soft and his demeanour calm. He’s wearing a blue striped shirt with a white collar and two small badges on his jacket lapel: one says simply “Panasonic”, the other is a green leaf with the slogan “Eco ideas”. And there-in lies a contradiction. For while Panasonic’s marketeers are focused on television’s latest magic, Mr Ohtsubo wants to talk about a less sexy product – batteries.
Like companies from Marks and Spencer to Shell, Panasonic has an environmental plan, in this case called GT12 (Green Transformation 2012). “We want to bring everything under the eco umbrella,” he says.
Central to that plan is Panasonic’s 100 per cent takeover of its home-town rival, Sanyo, launched this summer after it bought a 50.2 per cent stake for £2.8bn last December. The attraction, says Mr Ohtsubo, is not Sanyo’s wide range of consumer products, from mobile phones and (2D) television sets to refrigerators and washing machines. Instead, the allure is its expertise in alternative energy generation – particularly solar power – and storage, a low-profile field that he believes has huge potential. “Even without subsidies, we think the solar business will grow,” he says.
The company that is now Panasonic was founded in 1918 by Konosuke Matsushita, his 22-year-old wife, Mumeno, and her brother, Toshio Iue, 15. Its first product was an improved light-bulb socket. Nearly 30 years later, while Japan was occupied by US forces, Mr Iue borrowed a disused Matsushita factory and began to manufacture bicycle lamps. His business later became Sanyo.
So was Panasonic’s acquisition a fraternal rescue or a predatory pounce on a weakened rival? Sanyo has been plagued with bad luck for the past decade. First it got caught selling under-powered solar cells in the subsidised Japanese market. Then, in 2004, a devastating earthquake crippled its semiconductor plant in Niigata plunging it into a financial crisis. A ¥300bn (£2.3bn at today’s exchange rates) restructuring in 2006 left its banks holding five out of nine board seats.
Even the company’s battery division was not immune. In 2006, shortly after the collapse of a proposed joint venture with Nokia to make handsets, it recalled 1.3 million mobile phone batteries when they demonstrated a tendency to overheat. Efforts to sell the semiconductor division were abandoned in 2007 after the credit crunch hit. Mr Iue’s son, Satoshi, stepped down as chairman for personal reasons in March that year and the grandson of the founder, Toshimasa, resigned as president in April.
By then, Sanyo was embroiled in a US Securities and Exchange Commission investigation (since settled) for allegedly failing to report a $1bn loss. By November 2008, Sanyo’s new president, Seiichiro Sano, was in talks with Mr Ohtsubo.
There are several possible explanations for Mr Ohtsubo’s dedication to greenery and interest in Sanyo. Cynics might argue that it’s just greenwash. But the price he’s paying for his rival, though well below peak, is far too much if all he wants is a lick of green paint to satisfy investors on corporate social responsibility (CSR).
Another explanation is that Mr Ohtsubo has spotted, or thinks he’s spotted, a genuine growth market and is seizing the opportunity. If so, he’s got nerves of steel, because this is a huge gamble. Solar power installations are not profitable without subsidy, and in tough economic times, government handouts are vulnerable. Spain, Europe’s solar power leader, cut its photovoltaic subsidy – worth €3bn (£2.5bn) last year – by up to 45 per cent this summer amid howls from the industry.
Rechargeable batteries, where Panasonic-Sanyo now leads the world, with 43 per cent of the market, is also a long-range bet. The company likes to show off the battery packs it makes for hybrid cars. But while it’s true that hybrid market share is growing fast, it’s doing so from a low base, 3 per cent in Europe last year. This is a market driven by the desire of some people to “do something” about the environment rather than by calculated self interest. The sales growth could have a low ceiling.
To succeed in either of these fields, Panasonic will have to improve its technical performance. This, it seems, is Mr Ohtsubo’s strategy. “There’s a lot more we can do to improve our technology in order to increase capacity and speed up charging time,” he says. “Everyone knows petrol will be replaced by electricity.”
What nobody knows, though, is how quickly this will happen. The tipping point will come when electric cars undercut the price of those with internal combustion engines. And that will depend not only on Panasonic’s technology but on innovation by car makers and how long supplies of cheap oil last.
Initially, investors took a dim view of Mr Ohtsubo’s decision to buy Sanyo and another part-owned energy subsidiary outright in an ¥800bn deal. The move sent Panasonic shares tumbling 11 per cent. And the firm had only just pulled out of a two-year slump.
But the buy-out did make sense to some analysts. “Panasonic faces fierce competition from Samsung and Sony in consumer electronics,” Yuji Fujimori of Barclays Capital in Tokyo told Bloomberg at the time. “Its rivals are not as competitive in the energy-related products and household-electrics systems that Panasonic aims to strengthen.”
Oddly, Mr Ohtsubo does not justify the acquisition by pointing to juicy profits so much as matters of principle. “A company is only viable when it is useful to society,” he says. “Each company has a role to play, and the role Panasonic should play is to cope with the most important issues of the time. At the global level, that’s how human beings can co-exist with the environment.”
At Panasonic, the idea that the company has a higher social purpose was being taught to employees long before Western management gurus invented CSR. “At the base of our vision is the principle and philosophy of our founder,” says Mr Ohtsubo.
That principle was set out in 1932 in an address by Mr Matsushita to his assembled employees: “Our mission as a manufacturer is to create material abundance by providing goods as plentifully and inexpensively as tap water,” he said. “This is how we can banish poverty, bring happiness to people’s lives, and make this world a better place.”
And nearly 80 years later, Mr Ohtsubo is eager to take up the challenge. “We have so many things to do,” he says. “This is giving us much pleasure.”
Ten years on, and still the brightest light in space
The International Space Station flies over the UK tonight, so keep your eyes peeled
Sunday, 7 November 2010
The International Space Station is the most expensive object ever built, which has some critics wondering if it is worth $100bn
If you look to the heavens between sunset and moonrise tonight, at 6.20pm in London, the brightest object you’ll see (assuming it’s not cloudy) will be a white spark racing the wrong way across the sky, from west to east. To the naked eye, the International Space Station, humanity’s toehold on the edge of the vast reaches of the cosmos, is easier to see than Venus.
This is not some cramped canister like Mercury or Apollo, where every movement must be carefully choreographed. The ISS is more an artificial island in space than a ship; its 14 modules have more elbow room than a five-bedroom house. Together with its 20 solar power panels, it could stretch the length of a football pitch, weighs as much as 330 cars, and is zooming 230 miles above your head at 17,000mph.
Since America’s William Shepherd and Russian cosmonauts Yuri Gidzenko and Sergei Krikalev first floated through the Zvezda module 10 years ago last Tuesday, nearly 200 astronauts, cosmonauts and mission specialists from 15 countries have called the ISS home. Four were born in the UK, though parsimonious Britain is not involved in the project. These crews have conducted 150 spacewalks and 600 experiments. And apart from the 2003 crash of Columbia, it has all gone so smoothly that hardly anyone notices any more.
Its success is encouraging in these days of budget cuts, since it emerged as a compromise when the US, Russia, Europe and Japan found they could not afford four separate space stations. Supporters love to hold it up as an example of international co-operation. But it has not been without hiccups. The final component won’t be nudged into place until next year, eight years behind schedule, just as Nasa’s space shuttle programme ends.
Whether the ISS, the most expensive object ever built, is worth $100bn is a contentious issue. Proponents point to the science, though they refuse to place a value on it, arguing that much of the return will come in the future. Critics note that a lot of the research has been into ways people can live in space, knowledge that’s of use primarily if manned space programmes continue.
The ISS will fly for another decade, and may serve as a staging post to the Moon. Until then, perhaps its greatest contribution is as an inspiration, reminding us how high we can aspire.
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