Egos and intensity in the search for dark matter

Voices in the dark.

In the next few weeks, the world’s most sensitive dark matter detector will begin its operations under Italy’s Gran Sasso mountain. This seems a good time to point out that it is sharing the mountain with a detector that may already have found some. What a shame, then, that what might one day be viewed as a historic result has been mired in petty name-calling.

We’ve been looking for dark matter since 1933, when the astronomer Fritz Zwicky pointed out that clusters of galaxies move in ways that seemingly defy the laws of physics. The movement made sense only if the clusters were experiencing a gravitational pull from some invisible stuff nearby.

For various reasons, mostly to do with other astronomers not liking Zwicky very much, we’ve been searching for dark matter seriously only since the 1970s. During those four decades, there has been a series of pronouncements about its discovery being only a decade away. It might now be time to take those pronouncements a little more seriously: lately, the sensitivity of detectors has been improving tenfold every two years. We must surely be on the verge of finally nailing down the existence of dark matter. If we haven’t already, that is.

Dark matter doesn’t just hold gravity clusters together – it’s everywhere. It’s right here on earth, for instance: billions of dark matter particles fly through your body every second. You won’t feel them and they won’t harm you. They don’t interact much with the stuff of our everyday reality, which is what has made them so hard to detect.

While we don’t have any concrete detections of single particles, we do seem to have a discernible signal from passing through clouds of dark matter. It was first spotted by the DAMA dark matter detector, which is based, like the new DarkSide-50 detector, deep under the mountains at Gran Sasso. The rock covering them protects the instruments from distracting sources of noise.

In 2008, DAMA’s operators announced that they had identified a signal that rose and faded with the seasons. It might have been ignored, except that this is exactly what Katherine Freese predicted for a dark matter signal in 1986. She said that the intensity of dark matter detections should depend on the time of year, because as the earth whirls round the sun and the sun moves through the Milky Way, the amount of dark matter hitting the detectors will ebb and flow. It’s rather like the difference between walking into wind-driven rain, then turning and walking the other way. In June, dark matter hits Planet Earth full in the face; in December, it’s at our back.

So, it was pretty exciting that DAMA’s detector saw this predicted pattern. It was even more exciting when another detector, CoGeNT, based in a deep underground mine in Minnesota, also saw it. It’s a shame that a third detector, Xenon, didn’t.

Xenon is also in the Gran Sasso mine and there is no love lost between the leaders of these two research efforts. CoGeNT’s Juan Collar has called Xenon’s science “pure, weapons-grade balonium”. Not content with antagonising his peers, Collar has also accused the DAMA project of “cheapening the level of our discourse to truly imbecilic levels”.

Finding dark matter is proving to be astonishingly difficult and everyone knows there’s a Nobel prize at stake, so it’s not surprising that the claws are out.

Anyway, welcome to the fray, DarkSide-50; there is definitely room for more players in this competition. Whether there is room for more egos, however, is another matter.

Inside the DarkSide-50 experiment.

Michael Brooks holds a PhD in quantum physics. He writes a weekly science column for the New Statesman, and his most recent book is At the Edge of Uncertainty: 11 Discoveries Taking Science by Surprise.

This article first appeared in the 18 February 2013 issue of the New Statesman, Iraq: ten years on

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Connected - to save time, money and lives

Businesses and the public sector in the UK are increasingly exploring new ways they can work with the help of connected technology – and the benefits this will bring.

We live in a world that’s increasingly connected. EE was born three years ago and has spent this time creating one of the fastest and most reliable 4G networks in any country. The effect of this growth means more for the British population as a whole, along with its critical infrastructure and emergency responders, than it does for individuals and consumers.

Why? Mobility, according to analysts CCS Insight, is “the fulcrum of digital transformation”. In the short time that mobile networks have existed – and the even shorter and more profound growth arc of 4G – mobility has moved from being about faster speeds and more services on our phones to a whole new world of possibilities for the way we live and work.

The latest mobile technologies can make small companies look big. And, the experts warn, they can make big companies look unintentionally small.

Over 500,000 businesses in the UK use our network and services to increase productivity and save money. Much of the public sector uses it to save money too – and save lives. We’d like to walk you through the stories emerging from this new world – sharing some examples of what happens when workers, customers and machines become truly connected.

Connected Vehicle

Businesses in the UK have long treated their cars, vans and other vehicles as their mobile offices, workshops or command centres, whether for field engineers, sales reps or dozens of other roles. But it’s not always been easy. 

That’s changing. Take utility Northumbrian Water. It is responsible for 55,000km of pipelines, many in rural parts of the UK. It has found a solution in the Connected Vehicle service from EE that is based on transportgrade equipment. External antennae on a van connect to a ruggedised router that deals with extreme temperatures and can handle vibrations from road surfaces. 4G becomes a shared WiFi connection for workers and devices out in the field, increasing their efficiency significantly as workers can stay connected on site, rather than having to travel back to the office.

And is it effective?

“The business case writes itself,” said Alan Sherwen, head of IS service and operations at Northumbrian Water, which is now looking at a wider rollout.

Beyond the private sector, the public sector is throwing off its image as a technology laggard. Blue-light fire, police and ambulance services are doing more than just seeing the potential.

East Midlands Ambulance Service’s head of IM&T, Steve Bowyer, describes his experience with 4G’s “reliable, consistently fast data connections” as “quite transformational”.

The ambulance service knows that every second counts, especially when accidents occur in remote locations.

Bowyer calls the use of 4G-connected vehicles “an extension of our control room” – for example, 4G-equipped ambulances allow paramedics to send vital information to hospitals ahead of arrival.

And it’s a similar story with the police. Officers collect and submit evidence from the scenes of crimes and accidents. Staffordshire Police has started to use connected vehicles and more broadly estimates its 4G devices provide the equivalent of 250,000 additional hours of policing time on the beat each year. That’s the equivalent of 100 extra officers.

Rapid Site

The technology we’re talking about – fast, robust, often rural connectivity – isn’t always about being on the move. Industries such as construction that occupy a location sometimes for a matter of months are also employing high-speed, managed services to serve those on site.

Jackson Civil Engineering used to have to wait three months to get a line installed. It was holding back the business.

“The challenges I face are making sure the guys on site get connectivity and transmit information from laptops, mobile phones and tablets,” said Justin Corneby, the company’s IT manager. “If there’s no connectivity for our guys on the ground it almost stops them working completely.” Now setup at a new location takes under three days, and speeds tend to be up to 60Mbps where, before, a fixed line gave the company 8Mbps.

Housing association Green Square faces a similar challenge in its efforts to supply about 400 homes every year in the west of England.

Mark Gingell, ICT service manager at Green Square, said: “[We have] some challenges about how do we get our staff access to the internet. What we want is a seamless process for them to be able to log on and have the information at hand. The ultimate goal is to make great places where people can live.”

Public WiFi – in a box

Other types of business are on this connected journey too. Richardson’s operates 310 holiday boats on the Norfolk Broads and 4G Public WiFi from EE means not only coverage and simplicity for customers wanting internet access but knowing that compliance and online safety for families, through web filtering, is taken care of. In fact a whole range of businesses are now possible, many employing mobile payments systems which through their security and 4G connections open up a world of pop-up possibilities to businesses big and small.

Connected Health 

And lastly, the NHS is showing us that innovation can be built on even relatively simple technology. ‘Did not attend’ – or DNAs – cost the health service around £900m every year. That breaks down as £137 for every missed hospital appointment, £45 for each at a GP’s surgery. 

Intelligent messaging from EE means patients get a text message and simply reply to cancel or confirm an appointment. DNAs have been reduced by 67 per cent in one case, freeing up slots for others. That means there is the potential to save the NHS over £500m annually, just by improving the booking and scheduling service for patients with intelligent messaging. Meanwhile healthcare professionals get to target groups by demographics – for example, elderly people when it’s flu jab season. In short, this approach saves time, saves money and even saves lives.

Now you can

When we were the first to launch 4G in the UK, we had a simple message: Now you can. Most people took that to mean simply that smartphones, tablets, laptops and upcoming smart devices could get a faster network connection. But it’s been about much more than that.

Today, being connected in this way is a vital component for business and Britain’s vital public services. Our recent research of 1,000 UK businesses shows that 50 per cent of customers say 4G is critical to their business success. They report a 10 per cent uptick in productivity when adopting 4G – and gains can be greater in the public sector.

And we’re nowhere near finished. Now any organisation in the private or public sector can share in this connected story, employing new technology and innovative approaches as a managed service or in any way that best works for them. We are just as excited about the next three years as the last three.