Tag Archives: European Particle Physics Laboratory

Help find some siblings for the Higgs boson

This is the Higgs Hunters’ (or HiggsHunters) second call for volunteers; the first was described in my Dec. 2, 2014 posting. Some 18 months after the first call, over 20,000 volunteers have been viewing images from the Large Hadron Collider in a bid to assist physicists at CERN (European Organization for Nuclear Research).

These images show how particles appear in the ATLAS detector. The lines show the paths of charged particles travelling away from a collision at the centre. Volunteers are looking for tracks appearing 'out of thin air' away from the centre. (Image: CERN)

These images show how particles appear in the ATLAS detector. The lines show the paths of charged particles travelling away from a collision at the centre. Volunteers are looking for tracks appearing ‘out of thin air’ away from the centre. (Image: CERN)

A July 6, 2016 news item on phys.org announces the call for more volunteers (Note: Links have been removed),

A citizen science project, called HiggsHunters gives everyone the chance to help search for the Higgs boson’s relatives.

Volunteers are searching through thousands of images from the ATLAS experiment on the HiggsHunters.org website, which makes use of the Zooniverse  citizen science platform.

They are looking for ‘baby Higgs bosons’, which leave a characteristic trace in the ATLAS detector.

This is the first time that images from the Large Hadron Collider have been examined on such a scale – 60,000 of the most interesting events were selected from collisions recorded throughout 2012 – the year of the Higgs boson discovery. About 20,000 of those collisions have been scanned so far, revealing interesting features.

A July 4, 2016 posting by Harriet Kim Jarlett on Will Kalderon’s CERN blog, which originated the news item, provides more details,

“There are tasks – even in this high-tech world – where the human eye and the human brain simply win out,” says Professor Alan Barr of the University of Oxford, who is leading the project.

Over the past two years, more than twenty thousand amateur scientists, from 179 countries, have been scouring images of LHC collisions,  looking for as-yet unobserved particles.

Dr Will Kalderon, who has been working on the project says “We’ve been astounded both by the number of responses and ability of people to do this so well, I’m really excited to see what we might find”.

July 4, 2016 was the fourth anniversary of the  confirmation that the Higgs Boson almost certainly exists (from the CERN blog),

Today, July 4 2016, is the fourth birthday of the Higgs boson discovery. Here, a toy Higgs is sat on top of a birthday cake decorated with a HiggsHunter event display. On the blackboard behind is the process people are looking for - Higgs-strahlung. (Image: Will Kalderon/CERN)

Today, July 4 2016, is the fourth birthday of the Higgs boson discovery. Here, a toy Higgs is sat on top of a birthday cake decorated with a HiggsHunter event display. On the blackboard behind is the process people are looking for – Higgs-strahlung. (Image: Will Kalderon/CERN)

You can find the Higgs Hunters website here. Should you be interested in other citizen science projects, you can find the Zooniverse website here.

Less pollution from ships with nanofilter

04.05.16 - Cargo ships are among the leading sources of pollution on the planet. Starting in 2020, however, stricter sulfur emission standards will take effect. A low-cost solution for reaching the new targets may come from an EPFL start-up, which is developing a nanostructured filter for use in a ship’s exhaust stacks. Courtesy EPFL

04.05.16 – Cargo ships are among the leading sources of pollution on the planet. Starting in 2020, however, stricter sulfur emission standards will take effect. A low-cost solution for reaching the new targets may come from an EPFL start-up, which is developing a nanostructured filter for use in a ship’s exhaust stacks. Copyright Alain Herzog Courtesy EPFL

A May 4, 2016 news item on Nanowerk describes a marine initiative from the École Polytechnique de Lausanne (EPFL) in Switzerland,

Around 55,000 cargo ships ply the oceans every day, powered by a fuel that is dirtier than diesel. And owing to lax standards, maritime transport has emerged as one of the leading emitters – alongside air transport – of nitrogen oxide and sulfur. But the International Maritime Organization has enacted tighter emission limits, with new standards set to take effect in 2020. In response, an EPFL start-up is developing a low-cost and eco-friendly solution: a filter that can be installed in the ships’ exhaust stacks. The start-up, Daphne Technology, could do well on this massive market.

Given that no oceans or seas border Switzerland, it’s a rather interesting initiative on their part. Here’s more from a May 4, 2015 EPFL press release, which originated the news item,

Lowering sulfur emissions to below 1%

Under laboratory conditions, the nanostructured filter is able to cut sulfur emissions to below 1% and nitrogen oxide emissions to 15% of the current standards. This is a major improvement, seeing as the new standards will require an approximately 14% reduction in sulfur emissions.

Manufacturing the filters is similar to manufacturing solar cells. A thin metal plate – titanium in this case – is nanostructured in order to increase its surface area, and a number of substances are deposited in extremely thin layers. The plates are then placed vertically and evenly spaced, creating channels through which the toxic gases travel. The gases are captured by the nanostructured surfaces. This approach is considered eco-friendly because the substances in the filter are designed to be recycled. And the exhaust gas itself becomes inert and could be used in a variety of products, such as fertilizer.

The main challenges now are to figure out a way to make these filters on large surfaces, and to bring down the cost. It was at EPFL’s Swiss Plasma Center that researcher Mario Michan found a machine that he could modify to meet his needs: it uses plasma to deposit thin layers of substances. The next step is to produce a prototype that can be tested under real-world conditions.

Michan came up with his solution for toxic gas emissions after he worked on merchant ships while completing his Master’s degree in microengineering. It took several years, some techniques he picked up in the various labs in which he worked, and a few patents for Michan to make headway on his project. It was while he was working in another field at CERN and observing the technologies used to coat the inside of particle accelerators that he discovered a process needed for his original concept. An EPFL patent tying together the various aspects of the technology and several manufacturing secrets should be filed this year.

According to the European Environment Agency, merchant ships give off 204 times more sulfur than the billion cars on the roads worldwide. Michan estimates that his nanostructured filters, if they were used by all cargo ships, would reduce these emissions to around twice the level given off by all cars, and the ships would not need to switch to another fuel. Other solutions exist, but his market research showed that they were all lacking in some way: “Marine diesel fuel is cleaner but much more expensive and would drive up fuel costs by 50% according to ship owners. And the other technologies that have been proposed cannot be used on boats or they only cut down on sulfur emissions without addressing the problem of nitrogen oxide.”

The Daphne Technology website is here.

Mega science (e.g., a Large Hadron Collider) for agriculture

They are not talking about smashing plants together at high speeds when they suggest creating a CERN LHC (European Particle Physics Laboratory Large Hadron Collider) for agricultural sciences. Rather, three scientists have published a discussion paper about enabling large scale collaborations amongst agricultural scientists in Europe, according to a Jan. 5, 2016 news item on phys.org,

The Large Hadron Collider, a.k.a. CERN, found success in a simple idea: Invest in a laboratory that no one institution could sustain on their own and then make it accessible for physicists around the world. Astronomers have done the same with telescopes, while neuroscientists are collaborating to build brain imaging observatories. Now, in Trends in Plant Science on January 5 [2016], agricultural researchers present their vision for how a similar idea could work for them.

Rather than a single laboratory, the authors want to open a network of research stations across Europe—from a field in Scotland to an outpost in Sicily. Not only would this provide investigators with easy access to a range of different soil properties, temperatures, and atmospheric conditions to study plant/crop growth, it would allow more expensive equipment (for example, open-field installations to create artificial levels of carbon dioxide) to be a shared resource.

A Jan. 5, 2016 Cell Press news release on EurekAlert, which originated the news item, expands on the theme,

“Present field research facilities are aimed at making regional agriculture prosperous,” says co-author Hartmut Stützel of Leibniz Universität Hannover in Germany. “To us, it is obvious that the ‘challenges’ of the 21st century–productivity increase, climate change, and environmental sustainability–will require more advanced research infrastructures covering a wider range of environments.”

Stützel and colleagues, including Nicolas Brüggemann of Forschungszentrum Jülich in Germany and Dirk Inzé of VIB and Ghent University in Belgium, are just at the beginning of the process of creating their network, dubbed ECOFE (European Consortium for Open Field Experimentation). The idea was born last February at a meeting of Science Europe and goes back to discussions within a German Research Foundation working group starting four years ago. Now, they are approaching European ministries to explore the possibilities for ECOFE’s creation.

In addition to finding financial and political investment, ECOFE’s success will hinge on whether scientists at the various institutional research stations will be able to sacrifice a bit of their autonomy to focus on targeted research projects, Stützel says. He likens the network to a car sharing service, in which researchers will be giving up the autonomy and control of their own laboratories to have access to facilities in different cities. If ECOFE catches on, thousands of scientists could be using the network to work together on a range of “big picture” agricultural problems.

“It will be a rather new paradigm for many traditional scientists, but I think the communities are ready to accept this challenge and understand that research in the 21st century requires these types of infrastructures,” Stützel say. “We must now try to make political decision makers aware that a speedy implementation of a network for open field experimentation is fundamental for future agricultural research.”

Here’s a link to and a citation for the paper,

The Future of Field Trials in Europe: Establishing a Network Beyond Boundaries by Hartmut Stützel, Nicolas Brüggemann, Dirk Inzé. Publication stage: In Press Corrected Proof DOI: http://dx.doi.org/10.1016/j.tplants.2015.12.003 Published Online: January 05, 2016

This paper appears to be open access.

arts@CERN: welcomes new artist-resident (Semiconductor) and opens calls for new artist-residencies

It’s exciting to hear that CERN (European Particle Physics Laboratory) has an open call for artists but it’s also a little complicated, so read carefully. From an Oct. 12, 2015 CERN press release,

CERN1 has today announced three new open calls giving a chance to artists to immerse themselves in the research of particle physics and its community. Two new international partners have joined the Accelerate @ CERN programme: the Abu Dhabi Music & Arts Foundation (ADMAF) from UAE2 and Rupert, the centre for Art and Education from Vilnius, Lithuania3. The Collide @ CERN Geneva award is also now calling for entries, continuing the fruitful collaboration with The Republic and Canton of Geneva and the City of Geneva4. Last but not least, the Collide @ CERN Ars Electronica winning artists start their residency at CERN this week.

“Science and the arts are essential parts of a vibrant, healthy culture, and the Arts @ CERN programme is bringing them closer together,” said CERN DG Rolf Heuer. “With CERN’s diverse research programme, including the LHC’s second run getting underway, there’s no better place in the world to do that than here.”

With the support of The Abu Dhabi Music & Arts Foundation (ADMAF), Arts @ CERN gives the chance for an Emirati visual artist to come to CERN for a fully funded immersion in high-energy physics in the Accelerate @ CERN programme. Thanks to the support by Rupert, Centre for Art and Education in Vilnius, the same door opens to Lithuanian artists who wish to deepen their knowledge in science and use it as a source of inspiration for their work. Each of the two open calls begins today for artists to win a one-month research stay at CERN. Applications can be submitted up to 11 January 2016.

Funded by The Republic and Canton of Geneva and The City of Geneva, Collide @ CERN Geneva has operated successfully since 2012. Arts @ CERN announces the fourth open call for artists from Geneva, this time celebrating the city’s strength in digital writing. Today, the competition opens to writers [emphasis mine] who were born, live or work in the Geneva region, and would like to win a three-month residency where scientific and artistic creativity collide.  The winner will also receive a stipend of 15,000CHF. The deadline for applications is 11 January 2016.

“Arts and science have always been interlinked as major cultural forces, and this is the fundamental reason for CERN to continue to proactively pursue this relationship,” said Mónica Bello, Head of Arts @ CERN. “The arts programme here continues to flourish.”

Semiconductor, the artist duo formed by Ruth Jarman and Joe Gerdhardt, are the winners of the Collide @ CERN Ars Electronica award5. Out of 161 projects from 53 countries, the jury6 awarded Semiconductor for their broad sense of speculation, complexity and wonder, using strategies of analysis and translation of the phenomena into tangible and beautiful forms. Their two-month Collide @ CERN residency starts on 12 October 2015.


1. CERN, the European Organization for Nuclear Research, is the world’s leading laboratory for particle physics. It has its headquarters in Geneva. At present, its member states are Austria, Belgium, Bulgaria, the Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Israel, Italy, the Netherlands, Norway, Poland, Portugal, Slovakia, Spain, Sweden, Switzerland and the United Kingdom. Romania is a Candidate for Accession. Serbia is an Associate Member in the pre-stage to Membership. Pakistan and Turkey are Associate Members. India, Japan, the Russian Federation, the United States of America, the European Union, JINR and UNESCO have observer status.

6. Members of the Jury for Collide @ CERN Ars Electronica were: Mónica Bello (ES), Michael Doser (AT), Horst Hörtner (AT), Gerfried Stocker (AT) and Mike Stubbs (UK).

Here are a few more links,

Online submissions for artists CERN.ch/arts

Further information:

Arts@CERN website
Accelerate@CERN website
Collide@CERN Facebook site (link is external)
Twitter ArtsAtCern (link is external)

Good luck!

Become a Higgs Hunter (anyone can do it)

The Higgs you’d be hunting is a Higgs boson; the one that was confirmed to worldwide jubilation in 2012. (For anyone not familiar with the Higgs, I have a Dec. 14, 2011 post which provides a introductory video from the US Fermi Lab along with more information.)

Thanks to David Bruggeman and a Nov. 29, 2014 post on his Pasco Phronesis blog I have additional details about this citizen science, aka, crowdsourced science, project,

If you accept the assignment, Higgs Hunters will provide you several particle images from the ATLAS detector at CERN.  Mark any tracks that are off-centre in the images and move on to the next.  The tracks represent decay of exotic particles, particles that could have resulted from the decay of the Higgs boson.

Here’s more from a Science Magazine Nov. 26, 2014 posting (Note: Links have been removed),

Today [Nov. 26, 2014] marks the beginning of your chance to hunt for tiny explosions that could eventually lead to entirely new physics. Head to higgshunters.org to help scientists analyze 25,000 images from CERN’s particle collider, but be warned, you’ll be looking for evidence of the Higgs boson’s death. Some scientists believe that when the Higgs boson decays, it leaves behind other, completely new particles. …

Higgshunters.org has prepared its own video introduction to the project,

For those who prefer text, Higgs Hunters has this to say on its Introductory page,

In 2012, the world of Particle Physics rejoiced with the discovery of the long sought after Higgs boson particle. But this is just the beginning. In our search for answers to the most fundamental questions about the nature of reality, we are looking for your help in finding evidence of new physics beyond our current understanding. Through searching for exotic decays (particles falling apart in unexpected ways) in the Large Hadron Collider’s particle collisions, you can be a part of the next great revolution in Physics. The LHC’s computer programs were not designed to look for these decays, but we are willing to bet that a keen pair of human eyes can. So how about it, are you ready to change our understanding of the world?

On its How you can help page, the Higgs Hunters scientists describe the magnitude of the project and The Zooniverse (a citizen science organization), which is providing the platform for this project Note: Links have been removed,

Particle colliders produce a huge amount of data – so large in fact that the world-wide web was invented at CERN so scientists could share the data with each other to handle it. CERN now has a global computing grid of 170 computing centres in 40 countries trawling through the data, but computers are far from perfect. Unlike the human brain, which is naturally curious and excellent at pattern recognition, computer programs can only find what they have been taught how to find.

The Zooniverse has a rich history of making new discoveries that computers had completely missed (some older members will recall the excitement surrounding ‘Hanny’s Voorwerp’ found by a citizen scientist working on the Galaxy Zoo project). In this spirit, we need your help to look for the weird and wonderful secrets hiding in the LHC data. In doing so, you will also be teaching our computers how to better spot exotic particle events, speeding up the process of future scientific discoveries! To do this Higgs Hunters shows you a combination of simulated and real data. We need to understand what kind of events can be ‘detected’ using this site, and so we include computer-generated data as well as real data. You’ll be told after each classification if it was a simulation.

With your help, we can collectively improve our understanding of the universe. The next new discovery is waiting to be found!

Good luck!

I last mentioned The Zooniverse and citizen science in a Nov. 19, 2014 post about the upcoming American Association for the Advancement of Science (AAAS) 2015 meeting in California. Citizen science will be discussed in presentations at the meeting and also at the  Citizen Science Association’s first conference (which is being held as a pre-AAAS 2015 meeting conference).

Quantum; the dance performance about physics in Vancouver, Canada (2 of 2)

Gilles Jobin kindly made time to talk about his arts residency at CERN (European Particle Physics Laboratory) prior to the performances of Quantum (a dance piece resulting from the residency) from Oct. 16 -18, 2014 at Vancouver’s Dance Centre.

Jobin was the first individual to be selected as an artist-in-residence for three months in the CERN/Geneva programme (there is another artist-in-residence programme at the laboratory which is the CERN/Ars Electronica programme). Both these artist-in-residence programmes were announced in the same year, 2011. (You can find out more about the CERN artist-in-residence programmes on the Collide@CERN webpage,

As a main strategy of CERN’s Cultural Policy for Engaging with the Arts, Collide@CERN is a 3-year artist’s residency programme initiated by Arts@CERN in 2011.

By bringing world-class artists and scientists together in a free exchange of ideas, the Collide@CERN residency programme explores elements even more elusive than the Higgs boson: human ingenuity, creativity and imagination.

See below for more information about the Collide@CERN artist residency programmes:

Collide@CERN Geneva Residency

Prix Ars Electronica Collide@CERN Residency

The Collide@CERN prize – an open call to artists working in different art forms to win a fully funded residency – will be awarded annually in two strands (Collide@CERN Geneva and Prix Ars Electronica Collide@CERN) until 2013. It comprises prize money and a residency grant for up to 3 months at CERN.

The winning artists will interact and engage with CERN scientists in order to take their artistic work to new creative dimensions.

The awards are made following two annual international open calls and the jury comprises the cultural partners as well as representatives from Arts@CERN, including scientists.

Planned engagement with artists at CERN is a relatively new concept according to an August 4, 2011 CERN press release,

Today CERN1 launches its cultural policy for engaging with the arts. Called ‘Great Arts for Great Science’, this new cultural policy has a central strategy – a selection process for arts engagement at the level of one of the world’s leading research organizations.

“This puts CERN’s engagement with the arts on a similar level as the excellence of its science,” said Ariane Koek, CERN’s cultural specialist.

CERN’s newly appointed Cultural Board for the Arts will be the advisers and guardians of quality. It is made up of renowned cultural leaders in the arts from CERN’s host-state countries: Beatrix Ruf, Director of the Kunsthalle Zurich; Serge Dorny, Director General of the Lyon Opera House; Franck Madlener, Director of the music institute IRCAM in Paris. Geneva and CERN are represented by Christoph Bollman of ArtbyGenève and Michael Doser, an antimatter scientist. Membership of the board is an honorary position that will change every three years.

The Cultural Board will select one or two art projects a year to receive a CERN letter of approval, enabling these projects to seek external funding for their particle-physics inspired work. This will also build up an international portfolio of CERN-inspired work over the years to come, in conjunction with the Collide@CERN (link sends e-mail) Artists Residency Programme, details of which will be announced in the coming month.

To date, Jobin is the only choreographer to become, so to speak, a member of the CERN community. It was a position that was treated like a job. Jobin went to his office at CERN every day for three months to research particle physics. He had two science advisors, Nicholas Chanon and Michael Doser to help him gain an understanding of the physics being studied in the facility. Here’s Jobin describing his first experiences at CERN (from Jobin’s Collide Nov. 13, 2012 posting),

When I first arrived at Cern, I was captivated by the place and overwhelmed by the hugeness of the subject: Partical [sic] physics… And I had some serious catch up to do… Impressed by the two introduction days in which I had the opportunity to meet many different scientists, Ariane Koeck told me “not to panic” and “to spend my first month following my instinct and not my head…”. …

I found out about the 4 fundamental forces and the fact that gravity was the weakest of all the forces. For a contemporary dancer formed basically around the question of gravity and “groundness” that came as a total shock! I was not a “pile of stuff”, but particles bound together by the strong force and “floating” on the surface of the earth… Me, the earth, you readers, the LHC flying at incredible speed through space, without any of us, (including the physicists!) noticing anything…  Stardust flying into space… I was baffled…

Jobin was required deliver two public lectures, one at the beginning of his residency and the other at the end, as well as, a series of ‘interventions’. He instituted four ‘interventions’, one each in CERN’s library, data centre, anti-matter hall, and cafeteria. Here’s an image and a description of what Jobin was attempting with his library intervention (from his Nov. 13, 2012 posting),

CERN library dance intervention Credit: Gilles Jobin

CERN library dance intervention Credit: Gilles Jobin

 My idea was to “melt” our bodies into the timeline of the library. Like time chameleons, we were to adapt our movements and presence to the quiet and studious atmosphere of the library and be practically unnoticed. My postulate was to imagine that the perception of time is relative; there was a special texture to “time” inside the library. How long is an afternoon in a library? Never ending or passing by too quickly? It is a shared space, with the unique density you can feel in studious atmosphere and its user’s different virtual timelines. We melted into the element of the library and as we guessed, our “unusual” presence and actions did not create conflicts with our surroundings and the students at work. It was a bit like entering slowly into water and becoming part of the element without disturbing its balance. The time hypothesis worked… I wanted to do more site specific interventions in Cern because I was learning things differently. Some understanding was going through my body. Being in action into the labs…

It was only after the residency was completed that he started work on Quantum (producing a dance piece was not a requirement of the residency). After the residency, he did bring his science advisors, Chanon and Doser to his studio and brought his studio to CERN. Jobin managed to get rehearsal time in one of the halls that is 100 metres directly above the large hadron collider (LHC) during the time period when scientists were working to confirm the existence of the Higgs Boson). There were a number of announcements ‘confirming’ the Higgs. They started in July 2012 and continued, as scientists refined their tests, to March 2013 (Wikipedia entry)  when a definitive statement was issued. The definitive statement was recently followed with more confirmation as a June, 25, 2014 article by Amir Aczel for Discover declares Confirmed: That Was Definitely the Higgs Boson Found at LHC [large hadron collider].

As scientists continue to check and doublecheck, Jobin presented Quantum in October 2013 for the first time in public, fittingly, at CERN (from Jobin’s Oct. 3, 2013 blog posting),



Jobin was greatly influenced by encounters at CERN with Julius von Bismarck who won the 2012 Prix Ars Electronica Collide@CERN Residency and with his science advisors, Dosen and Chanon. Surprisingly, Jobin was also deeply influenced by Richard Feynman (American physicist; 1918 – 1988). “I loved his approach and his humour,” says Jobin while referring to a book Feynman wrote, then adding,  “I used Feynman diagrams, learning to draw them for my research and for my choreographic work on Quantum.”

For those unfamiliar with Feynman diagrams, from the Wikipedia entry (Note: Links have been removed),

In theoretical physics, Feynman diagrams are pictorial representations of the mathematical expressions describing the behavior of subatomic particles. The scheme is named for its inventor, American physicist Richard Feynman, and was first introduced in 1948. The interaction of sub-atomic particles can be complex and difficult to understand intuitively, and the Feynman diagrams allow for a simple visualization of what would otherwise be a rather arcane and abstract formula.

There’s also an engaging Feb. 14, 2010 post by Flip Tanedo on Quantum Diaries with this title, Let’s draw Feynman diagrams! and there’s this paper, by David Kaiser on the Massachusetts Institute of Technology website, Physics and Feynman’s Diagrams; In the hands of a postwar generation, a tool intended to lead quantum electrodynamics out of a decades-long morass helped transform physics. In the spirit of Richard Feynman, both the Tanedo post and Kaiser paper are quite readable. Also, here’s an example (simplified) of what a diagram (from the Quantum Diaries website) can look like,

[downloaded from http://www.quantumdiaries.org/2010/02/14/lets-draw-feynman-diagams/]

[downloaded from http://www.quantumdiaries.org/2010/02/14/lets-draw-feynman-diagams/]

Getting back to Quantum (dance), Jobin describes this choreography as a type of collaboration where the dancers have responsibility for the overall look and feel of the piece. (For more details, Jobin describes his ‘momement generators’ in the radio interview embedded in part 1 of this piece on Quantum.)

In common with most contemporary dance pieces, there is no narrative structure or narrative element to the piece although Jobin does note that there is one bit that could be described as a ‘Higgs moment’ where a dancer is held still by his or her feet, signifying the Higgs boson giving mass to the universe.

As to why Vancouver, Canada is being treated to a performance of Quantum, Jobin has this to say, “When I knew the company was traveling to New York City and then San Francisco, I contacted my friend and colleague, Mirna Zagar, who I met at a Croatian Dance Week Festival that she founded and produces every year.”  She’s also the executive director for Vancouver’s Dance Centre. “After that it was easy.”

Performances are Oct. 16 – 18, 2014 at 8 pm with a Post-show artist talkback on October 17, 2014.

Compagnie Gilles Jobin

$30/$22 students, seniors, CADA members/$20 Dance Centre members
Buy tickets online or call Tickets Tonight: 604.684.2787 (service charges apply to telephone bookings)

You can find part 1 of this piece about Quantum in my Oct. 15, 2014 posting. which includes a video, a listing of the rest of the 2014 tour stops, a link to an interview featuring Jobin and his science advisor, Michael Doser, on a US radio show, and more.

Finally, company dancers are posting video interviews (the What’s Up project mentioned in part 1) with dancers they meet in the cities where the tour is stopping will be looking for someone or multiple someones in Vancouver. These are random acts of interviewing within the context of the city’s dance community.

Vancouver’s Georgia Straight has featured an Oct. 15, 2014 article by Janet Smith about Jobin and his particle physics inspiration for Quantum.

The Higgs boson on its own has inspired other creativity as noted in my Aug. 1, 2012 posting (Playing and singing the Higgs Boson).

As noted in my Oct. 8, 2013 post, Peter Higgs (UK) after whom the particle was named  and François Englert (Belgium) were both awarded the 2013 Nobel Prize in Physics for their contributions to the theory of the Higgs boson and its role in the universe.

Quantum; an upcoming dance performance in Vancouver, Canada (1 of 2)

Oct. 16 – 18, 2014 are the Vancouver (Canada) dates when you can catch Compagnie Gilles Jobin performing its piece, Quantum, based on choreographer Gilles Jobin’s residency CERN (Europe’s particle physics laboratory). The Vancouver stop is part of a world tour which seems to have started in New York City (US) and San Francisco (US).

News flash: There is a special lecture by Gilles Jobin at TRIUMF, Canada’s National Laboratory for Particle and Nuclear Physics at 11 am on Oct. 15, 2014 in the auditorium. Instructions for getting to TRIUMF can be found here.

Back to the tour, here’s what the dance company has planned for the rest of October and November (Chile is Chili, Brazil is Brésil, Switzerland is Suisse and Peru is Pérou in French), from the gillesjobin.com Tour webpage,

– 21 octobre
Festival Danzalborde – Centro Cultural Matucana 100 – Santiago de Chile – Chili

– 23 octobre
Festival Danzalborde – Parque Cultural de Valparaiso, Valparaiso – Chili

– 26 octobre
Bienal Internacional de dança do Ceará – Fortaleza – Brésil

– 29 et 30 octobre
En collaboration avec swissnex Brésil au Forum Internacional de dança FID, Centro Cultural Banco do Brasil – Belo Horizonte – Brésil

– 2 novembre
En collaboration avec swissnex Brésil au Festival Panorama, Teatro Carlos Gomes – Rio de Janeiro – Brésil

– Du 6 au 9 novembre
Arsenic – Lausanne – Suisse

– Du 13 au 15 novembre
Arsenic – Lausanne – Suisse

– 21 et 22 novembre
Festival de Artes Escenicas de Lima FAEL – Teatro Municipal, Lima – Pérou

As ambitious as this touring programme seems, it can’t be any more ambitious than trying to represent modern physics in dance. Here’s more about Quantum from the (Vancouver) Dance Centre’s events page,

Art and science collide in QUANTUM, the result of Gilles Jobin’s artistic residency at the largest particle physics laboratory in the world – CERN in Geneva, where he worked with scientists to investigate principles of matter, gravity, time and space in relation to the body. Six dancers power through densely textured, sculptural choreography, to evoke the subtle balance of forces that shape our world. Illuminated by Julius von Bismarck’s light-activated kinetic installation built from industrial lamps, and accompanied by an electronic score by Carla Scaletti which incorporates data from the Large Hadron Collider, QUANTUM epitomizes the adventurous, searching spirit of artistic and scientific inquiry.

Response to the performances in New York City were interesting, that is to say, not rapturous but intriguing nonetheless. From an Oct. 3, 2014 review by Gia Kourlas for the New York Times,

Performed Thursday night [Oct. 2, 2014] at the Fishman Space at BAM Fisher — and included in the French Institute Alliance Française’s Crossing the Line festival — this spare 45-minute work is a duet of movement and light. Instead of dramaturges, there are scientific advisers. Jean-Paul Lespagnard’s jumpsuits reimagine particles as a densely patterned uniform of green, purple and white. (They’re cute in a space-camp kind of way.) Carla Scaletti’s crackling, shimmering score incorporates data from the Large Hadron Collider, CERN’s powerful particle accelerator.

But in “Quantum,” translating scientific ideas, however loosely, into dance vocabulary is where the trouble starts. A lunge is still a lunge.

Robert P Crease in an Oct. 7, 2014 posting (for Physics World on the Institute of Physics website) about one of the performances in New York City revealed something about his relationship to art/science and about Gilles Jobin’s work,

I’m fascinated by the interactions between science and culture, which is what led me to the Brooklyn Academy of Music (BAM), which was hosting the US première of a dance piece called Quantum that had previously debuted where it had been created, at CERN. …

I ran into Gilles Jobin, who had choreographed Quantum during an artist’s residency at CERN. I asked him the following question: “If a fellow choreographer who knew nothing about the piece were to watch it, is there anything in the movement or structure of the work that might cause that person to say ‘That choreographer must have spent several months at a physics lab!’?” Gilles paused, then said “No.” The influence of the laboratory environment, he said, was in inspiring him to come up with certain kinds of what he called “movement generators”, or inspirations for the dancers to create their own movements. “For instance, all those symmetries – like ghost symmetries – that I didn’t even know existed!” he said. I asked him why he had chosen the work’s title. “I considered other names,” he said. “Basically, Quantum was just a convenient tag that referred to the context – the CERN laboratory environment – in which I had created the work.”

Jobin and Michael Doser (Senior research physicist at CERN) talked to Ira Flatow host of US National Public Radio’s (NPR) Science Friday programme in an Oct. 3, 2014 broadcast which is available as a podcast on the Dance and Physics Collide in ‘Quantum’ webpage. It’s fascinating to hear both the choreographer and one of the CERN scientists discussing Jobin’s arts residency and how they had to learn to talk to each other.

NPR also produced a short video highlighting moments from one of the performances and showcasing Jobin’s commentary,

Produced by Alexa Lim, Associate Producer (NPR, Science Friday)

The Dance Centre (Vancouver) has an Oct. 7, 2014 post featuring Jobin on its blog,

How did you get involved with dance?

I wanted to be an actor and thought it was a good idea to take dance classes. Later, back at acting classes I realized how comfortable I was with movement and uncomfortable with words. I must admit that I was a teenager at the time and the large majority of girls in the dance classes was also a great motivation…

Have you always been interested in science?

I was an arty kid that did not have any interest in science. I was raised in an artistic family – my father was a geometrical painter – I thought science was not for me. Art, literature, “soft” science, theatre, that was my thing. It was only at the age of 48, in one of the greatest laboratories there is, that I started to see that I could become “science able”. I realized that particle physics was not only about math, but also had great philosophical questions: that I could get the general sense of what was going down there and follow with passion the discovery. Science is like contemporary art, you need to find the door, but when you get in you can take everything on and make up your own mind about it without being a specialist or a geek.

If you didn’t have a career in dance, what might you be doing?

Ski instructor!

Adding their own measure of excitement to this world tour of Quantum, the company’s dancers are producing videos of interviews with choreographers and dancers local to the city the company is visiting (from the What’s Up project page or the gillesjobin.com website),

WHAT’S UP est un projet des danseurs de la Cie Gilles Jobin : Catarina Barbosa, Ruth Childs, Susana Panadés Díaz, Bruno Cezario, Stanislas Charré et Denis Terrasse .

Dans chaque ville visitée pendant la tournée mondiale de QUANTUM, ils partent à la rencontre des danseurs/chorégraphes pour connaître le contexte de la danse contemporaine locale et partager leurs différentes réalités.

Retrouvez ici toutes les interviews

The latest interview is an Oct. 10, 2014 video (approximate 2 mins.) focusing on Katherine Hawthorne who in addition to being a dancer trained as a physicist.

Part 2 is based on an interview I had with Gilles Jobin on Tuesday, Oct. 14, 2014 an hour or so after his and his company’s flight landed in Vancouver.

Liverpool Science Festival

The first Liverpool Science Festival (UK)  is being held June 25 – July 9, 2014 according to a June 6, 2014 Festival announcement, which has a very exciting lineup guests and events,

Liverpool Science Festival was founded with the mission to create a unique platform to engage the public in all things scientific – from natural science to science in its most interdisciplinary and cultural contexts.

For 2014, we are part of the science programme of events during the UK’s inaugural International Festival for Business (IFB 2014). We are also proud to be contributing events to the official 60th Anniversary celebrations of CERN – birthplace of the internet, the Large Hadron Collider (LHC), site of the discovery of the Higgs Boson – and home to scientists from more than 100 countries.

Highlights of the festival include:

The Hitchhiker’s Guide to the Solar System:
1 river, 9 planets, 14 days and 70 miles

An ambitious public engagement project setting off from the source of the Mersey on a journey to the sea, culminating in a series of pop-up astronomy events and happenings which will mark out the positions of the planets and a scale model of the Solar System. The journey begins on 25 June with astronomy at the source of the Mersey (Stockport, Cheshire) and ends on the evening of 9 July on Crosby Beach.


This is the second reference to the Hitchhiker’s Guide to the Galaxy that I’ve had on this blog in less than one week. Rice University (US) researcher, Nikta Fakhri, referenced the book in a description of her work on carbon nanotubes in a June 5, 2014 post titled, Hitchhikers at the nanoscale show how cells stir themselves. (For anyone unfamiliar with the book and/or its cultural import, here’s a Wikipedia entry devoted to it.)

Next the festival is featuring its physics with two live events, one featuring Jon Butterworth and the other featuring Butterworth and Lyn Evans (from the announcement),

“If you want to know what being a professional scientist is really like, read Smashing Physics!” – Professor Brian Cox

Professor Jon Butterworth (CERN {European Organization for Nuclear Research ], UCL [University College of London] & Guardian Science) at Waterstones Liverpool One on 27 June – one of the UK’s foremost physicists, on Smashing Physics, his smashing new science book about the hunt for Higgs Boson and real life as a real scientist at the cusp of scientific discovery.


Dr Lyn Evans (chief engineer at CERN who spent 15 years leading the team constructing the LHC, the most complex machine ever built) flies in from CERN, Geneva, to speak on Engineering the LHCon 28 June at Stanley Dock.


Butterworth has a blog, Life and Physics, hosted by the Guardian newspaper as part of its science blog network. I find his writing to be quite approachable. From time to time he starts talking in ‘physics’ but he usually prepares his audience for these brief outbursts by explaining the concept first in plain English and/or approaching the topic from a mundane angle, e.g., ‘it can be lonely being a physicist’.

Evans was in Vancouver, Canada last February 2013 to launch a global project (from a Feb. 18, 2013 news release posted on The Exchange),

… On February 21 [2013], TRIUMF will do its part in fulfilling this role as it plays host to a meeting of the leaders of the major high-energy physics laboratories around the world. The key outcome of this meeting will be the completion of an existing global collaboration and the launch of a new team that will coordinate and advance the global development work for the Linear Collider, the world’s next accelerator project aimed at pulling back the curtain on the secrets of nature’s most innermost workings.

The new Linear Collider Collaboration (LCC) will combine the two next-generation collider projects, the International Linear Collider (ILC) and the Compact Linear Collider (CLIC), under one organizational roof and will be headed by Lyn Evans, former Project Manager of CERN’s Large Hadron Collider (LHC). Some may recognize Lyn Evans as recent co-recipient of the Milner Foundation’s Fundamental Physics Prize. (Evans will give a public science lecture on Wednesday evening at Science World.)

The Linear Collider Board, headed by the University of Tokyo’s Sachio Komamiya, is a new oversight committee for the LCC that will take up office at the same time.

Evans’ public talk mentioned in my Jan. 29, 2013 posting of Vancouver science events features a description that resembles the one for the Liverpool Science Festival (from my posting),

There is a video of the Evan’s February 20, 2013 talk here for anyone who can’t get to Evans’ talk in Liverpool.

Here’s more from the Liverpool Science Festival announcement,

“Wax has an extraordinary mind, and she has brought it to bear with her trademark wit.” – Stephen Fry

Ruby Wax brings her unique wit to the festival with her Sane New World stage show, at Stanley Dock on the evening of 28 June. Since obtaining a Masters Degree in Mindfulness-based Cognitive Therapy from Oxford University, Wax has become a respected campaigner for mental illness in the UK.


“As the scouts say – be prepared! Say your prayers that you never need this book” – Bear Grylls

Dr Lewis Dartnell presents The Knowledge, How to Rebuild Our World from Scratch, his guide to everything you need to know to survive the apocalypse, avert another Dark Age and accelerate the rebuilding of civilization. Based on Dartnell’s best-selling book which has been the top-selling science book on Amazon in recent weeks.


For the last highlight from the festival announcement, we return to physics,

“Mind-blowing.” – New York Times on Particle Fever

Screening of Particle Fever – Liverpool Science Festival has special permission to screen this new movie on CERN and the hunt for the Higgs Boson, three months ahead of its UK general release. The screening will be followed by a Q&A featuring Professor Tara Shears, CERN particle physicist and the University of Liverpool’s first ever female professor of physics. The screening takes place on the evening of 5 July at Stanley Dock.


“Particle Fever” received its May 16, 2014 Canadian premiere in Vancouver, which included a discussion with a panel of physicists.  (There was a also a showing when the Vancouver International Film Festival was held in Oct. 2013 and that has a separate webpage description. I assume a showing during a film festival is not considered a premiere) Here’s a description of the documentary from the Vancouver International Film Festival theatre’s Particle Fever webpage,

May 16th, 7:00 PM screening will be followed by a panel discussion of physicists, copresented by TRIUMF and supported by Reel Causes.
May 19th, 6:30 PM screening is open to youth, the film is rated PG

Imagine being able to watch as Edison turned on the first light bulb, or as Franklin received his first jolt of electricity. Physicist turned filmmaker Mark Levinson gives us the modern equivalent of those world-changing moments with this as-it-happens front-row seat to our generation’s most significant and inspiring scientific breakthrough—the launch of the Large Hadron Collider, near Geneva, built to recreate conditions that existed just moments after the Big Bang and to potentially explain the origin of all matter. Following a team of brilliant scientists, Levinson—aided by master editor Walter Murch—crafts a celebration of discovery while revealing the very human stories behind this epic machine.

“Set in crummy offices and towering facilities worthy of a Bond movie, the documentary is edited with the momentum of a thriller by the great Walter Murch (Apocalypse Now), as we follow six scientists. They come across as simultaneously passionate thinkers and endearing nerds: There’s the elegant Italian physicist and classical pianist Fabiola Gianotti, obliviously stepping into traffic while talking excitedly on her phone. Or postdoc student and experimental physicist Monica Dunford, declaring effusively: “It’s unbelievably fantastic how great data is.”

There is a Particle Fever May 14, 2014 review by Ken Eisner in the Vancouver local publication, The Georgia Straight.  Peculiarly and in the midst a poetic movie review, Eisner starts complaining about physics funding in the US,

In the rarefied world of quantum physics, “The ability to leap from failure to failure with undiminished enthusiasm is the key to success.” This is according to one scientist prominently featured in an absorbing doc that takes as its locus the Large Hadron Collider, in Switzerland, where some pretty amazing breakthroughs—and a few duds—have happened in the past few years.

The subtext is the struggle to keep pure learning alive with no promise of tangible return, except the possibility of knowledge that will forever alter our understanding of life. …

… its main activities take place at the huge site of CERN, near Lake Geneva—built there largely because right-wingers have managed to kill off nonprofit science in the U.S. [emphasis mine] Its hivelike realities, with staff drawn from a hundred nations, make it resemble a space station on Earth. …

I think there may have been a few other important  factors influencing the Large Hadron Collider’s location.

Getting back to Liverpool, if the website is any indication, this science festival has been beautifully conceptualized and thoughtfully implemented. I wish the organizers all the best as they get ready to launch their festival.

Finally, in the description of the Hitchhiker’s Guide to the Solar System event, I noticed a reference to the Mersey, which brought to mind this song from 1965. Gerry & the Pacemakers sing Ferry Cross the Mersey,

Peter Higgs and François Englert to receive 2013 Nobel Prize in Physics and TRIUMF name changes?

After all the foofaraw about finding/confirming the existence of the Higgs Boson or ‘god’ particle (featured in my July 4, 2012 posting amongst many others), the Royal Swedish Academy of Sciences has decided to award the 2013 Nobel prize for Physics to two of the individuals responsible for much of the current thinking about subatomic particles and mass (from the Oct. 8, 2013 news item on ScienceDaily),

The Royal Swedish Academy of Sciences has decided to award the Nobel Prize in Physics for 2013 to François Englert of Université Libre de Bruxelles, Brussels, Belgium, and Peter W. Higgs of the University of Edinburgh, UK, “for the theoretical discovery of a mechanism that contributes to our understanding of the origin of mass of subatomic particles, and which recently was confirmed through the discovery of the predicted fundamental particle, by the ATLAS and CMS experiments at CERN’s Large Hadron Collider.”

François Englert and Peter W. Higgs are jointly awarded the Nobel Prize in Physics 2013 for the theory of how particles acquire mass. In 1964, they proposed the theory independently of each other (Englert together with his now deceased colleague Robert Brout). In 2012, their ideas were confirmed by the discovery of a so called Higgs particle at the CERN laboratory outside Geneva in Switzerland.

TRIUMF, sometimes known as Canada’s national laboratory for particle and nuclear physics, has issued an Oct. 8, 2013 news release,


Canadians Key Part of Historical Nobel Prize to “Godfathers” of the “God Particle”

(Vancouver, BC) — The Royal Swedish Academy of Sciences today awarded the Nobel Prize in physics to Professor Peter W. Higgs (Univ. of Edinburgh) and Professor François Englert (Univ. Libre de Bruxelles) to recognize their work developing the theory of what is now known as the Higgs field, which gives elementary particles mass.  Canadians have played critical roles in all stages of the breakthrough discovery Higgs boson particle that validates the original theoretical framework.  Throngs across Canada are celebrating.

More than 150 Canadian scientists and students at 10 different institutions are presently involved in the global ATLAS experiment at CERN.  Canada’s national laboratory for particle and nuclear physics, TRIUMF, has been a focal point for much of the Canadian involvement that has ranged from assisting with the construction of the LHC accelerator to building key elements of the ATLAS detector and hosting one of the ten global Tier-1 Data Centres that stores and processes the physics for the team of thousands.

“The observation of a Higgs Boson at about 125 GeV, or 130 times the mass of the proton, by both the ATLAS and CMS groups is a tremendous achievement,” said Rob McPherson, spokesperson of the ATLAS Canada collaboration, a professor of physics at the University of Victoria and Institute of Particle Physics scientist. “Its existence was predicted in 1964 when theorists reconciled how massive particles came into being.  It took almost half a century to confirm the detailed predictions of the theories in a succession of experiments, and finally to discover the Higgs Boson itself using our 2012 data.”

The Brout-Englert-Higgs (BEH) mechanism was first proposed in 1964 in two papers published independently, the first by Belgian physicists Robert Brout and François Englert, and the second by British physicist Peter Higgs. It explains how the force responsible for beta decay is much weaker than electromagnetism, but is better known as the mechanism that endows fundamental particles with mass. A third paper, published by Americans Gerald Guralnik and Carl Hagen with their British colleague Tom Kibble further contributed to the development of the new idea, which now forms an essential part of the Standard Model of particle physics. As was pointed out by Higgs, a key prediction of the idea is the existence of a massive boson of a new type, which was discovered by the ATLAS and CMS experiments at CERN in 2012.

The next step will be to determine the precise nature of the Higgs particle and its significance for our understanding of the universe. Are its properties as expected for the Higgs boson predicted by the Standard Model of particle physics? Or is it something more exotic? The Standard Model describes the fundamental particles from which we, and every visible thing
in the universe, are made, and the forces acting between them. All the matter that we can see, however, appears to be no more than about 4% of the total. A more exotic version of the Higgs particle could be a bridge to understanding the 96% of the universe that remains obscure.

TRIUMF salutes Peter Higgs and François Englert for their groundbreaking work recognized by today’s Nobel Prize and congratulates the international team of tens of thousands of scientists, engineers, students, and many more from around the world who helped make the discovery.

For spokespeople at the major Canadian universities involved in the Higgs discovery, please see the list below:


U of Alberta: Doug Gingrich, gingrich@ualberta.ca, 780-492-9501
UBC:  Colin Gay, cgay@physics.ubc.ca, 604-822-2753
Carleton U: Gerald Oakham (& TRIUMF), oakham@physics.carleton.ca, 613-520-7539
McGill U: Brigitte Vachon (also able to interview in French), vachon@physics.mcgill.ca, 514-398-6478
U of Montreal: Claude Leroy (also able to interview in French),leroy@lps.uontreal.ca, 514-343-6722
Simon Fraser U: Mike Vetterli (& TRIUMF, also able to interview in French), vetm@triumf.ca, 778-782-5488
TRIUMF: Isabel Trigger (also able to interview in French), itrigger@triumf.ca, 604-222-7651
U of Toronto: Robert Orr, orr@physics.utoronto.ca, 416-978-6029
U of Victoria: Rob McPherson, rmcphers@triumf.ca, 604-222-7654
York U: Wendy Taylor, taylorw@yorku.ca, 416-736-2100 ext 77758

While I know Canadians have been part of the multi-year, multi-country effort to determine the existence or non-existence of the Higgs Boson and much more in the field of particle physics, I would prefer we were not described as “… Key Part of Historical Nobel Prize … .” The question that springs to mind is: how were Canadian efforts key to this work? The answer is not revealed in the news release, which suggests that the claim may be a little overstated. On the other hand, I do like the bit about ‘saluting Higgs and Englert for their groundbreaking work’.

As for TRIUMF and what appears to be a series of name changes, I’m left somewhat puzzled, This Oct. 8, 2013 news release bears the name (or perhaps it’s a motto or tagline of some sort?): TRIUMF — Accelerating Science for Canada, meanwhile the website still sports this: TRIUMF Canada’s national laboratory for particle and nuclear physics while a July 17, 2013 TRIUMF news release gloried in this name: TRIUMF Accelerators, Inc., (noted in my July 18, 2013 posting). Perhaps TRIUMF is trying to follow in CERN’s footsteps. CERN was once known as the ‘European particle physics laboratory’ but is now known as the European Organization for Nuclear Research and seems to also have the tagline: ‘Accelerating science’.

Accelerator-on-a-chip at Stanford University’s SLAC National Accelerator Laboratory

For anyone who’s ever seen a picture of the accelerators at CERN’s (European Particle Physics Laboratory) Large Hadron Collider, the notion of an accelerator-on-a-chip seems unbelievable. Scientists at Stanford’s SLAC National Accelerator Laboratory thought otherwise according to a Sept. 27, 2013 SLAC news release (also on EurekAlert),

In an advance that could dramatically shrink particle accelerators for science and medicine, researchers used a laser to accelerate electrons at a rate 10 times higher than conventional technology in a nanostructured glass chip smaller than a grain of rice.

“We still have a number of challenges before this technology becomes practical for real-world use, but eventually it would substantially reduce the size and cost of future high-energy particle colliders for exploring the world of fundamental particles and forces,” said Joel England, the SLAC physicist who led the experiments. “It could also help enable compact accelerators and X-ray devices for security scanning, medical therapy and imaging, and research in biology and materials science.”

Because it employs commercial lasers and low-cost, mass-production techniques, the researchers believe it will set the stage for new generations of “tabletop” accelerators.

At its full potential, the new “accelerator on a chip” could match the accelerating power of SLAC’s 2-mile-long linear accelerator in just 100 feet, and deliver a million more electron pulses per second. [emphasis mine]

The news release goes on to describe how the researchers have achieved a more efficient acceleration,

Particles are generally accelerated in two stages. First they are boosted to nearly the speed of light. Then any additional acceleration increases their energy, but not their speed; this is the challenging part.

In the accelerator-on-a-chip experiments, electrons are first accelerated to near light-speed in a conventional accelerator. Then they are focused into a tiny, half-micron-high channel within a fused silica glass chip just half a millimeter long. The channel had been patterned with precisely spaced nanoscale ridges. Infrared laser light shining on the pattern generates electrical fields that interact with the electrons in the channel to boost their energy.

The researchers’ have produced an animation which illustrates their work,

Caption: This animation explains how the accelerator on a chip uses infrared laser light to accelerate electrons to increasingly higher energies. Credit:  (Greg Stewart/SLAC)

Here’s a citation for and a link to the  research paper (‘near final version as of Sept. 30, 2013),

Demonstration of electron acceleration in a laser-driven dielectric microstructure by E. A. Peralta, K. Soong, R. J. England, E. R. Colby, Z. Wu, B. Montazeri, C. McGuinness, J. McNeur, K. J. Leedle, D. Walz, E. B. Sozer, B. Cowan, B. Schwartz, G. Travish, & R. L. Byer. Nature (2013) doi:10.1038/nature12664  Published online 27 September 2013

It is behind a paywall although you can get reading access via ReadCube.

Finally, here’s what the chip looks like,

Nanofabricated chips of fused silica just 3 millimeters long were used to accelerate electrons at a rate 10 times higher than conventional particle accelerator technology. (Brad Plummer/SLAC)

Nanofabricated chips of fused silica just 3 millimeters long were used to accelerate electrons at a rate 10 times higher than conventional particle accelerator technology. (Brad Plummer/SLAC)