Of Interest archive

With transparent skies and 300 days of sunshine a year, the tiny Alpine village of Saint-Véran (alt: 2,042 metres) offers a unique viewpoint on our own familiar fusion furnace. In the 1970s professional astronomers from the Observatoire de Paris used it to observe the Sun's corona with instruments they eventually donated to the village.

Walking in the scientists' footsteps, the local population soon developed a passion for solar astronomy—an amateur club was created, more instruments were acquired through donations and the municipality soon decided to capitalize on its privileged relationship with the Sun.

La Maison du Soleil was inaugurated on Thursday 9 June in the presence of French Vice-Minister for Higher Education and Research, Thierry Mandon, and of ITER Director-General Bernard Bigot.

Designed for the general public, La Maison du Soleil will organize exhibits, conferences and solar observations. Nuclear fusion and ITER are of course part of the permanent exhibit, with posters, panels ... and even a conductor sample provided by the ITER Magnets Division.

Saint-Véran is located in the heart of the Queyras Regional Park, two-and-a-half hours north of ITER.

The third edition of Introduction to Plasma Physics and Controlled Fusion by author Francis F. Chen is now available from Springer (follow this link). In addition to updates in all chapters, the 2016 release includes new chapters on special plasmas and plasma applications.

A recent Chinese version of the 1973 edition of the book is also available here.

While the fusion community continues its quest to harness fusion for energy needs, numerous spin-off benefits are resulting from the research carried out all over the world.

Given its complex, multidisciplinary nature, it should be no surprise that fusion research has driven advances in disciplines ranging from medical technology and environment to astrophysics and material sciences. EUROfusion, the European Consortium for the Development of Fusion Energy, has identified some of these spin-offs and put together a non-exhaustive list that demonstrates the short-term benefits of fusion research on the way to fusion electricity.

Read more about them on the EUROfusion website or download an infographic.

Two types of cameras will be needed inside of the ITER vacuum vessel to support inspection and maintenance operations—oversight cameras that give engineers a broad view inside the vacuum vessel, and cameras embedded on tooling or robotics for a view inside tightly confined spaces.

The European Domestic Agency for ITER is working with industry to develop purpose-built equipment small enough to fit into tight space constraints and capable of withstanding the harsh conditions close to the plasma.

In a project called FURHIS (for FUsion for Energy Radiation Hard Imaging System), Europe is collaborating with Oxford Technologies (UK) to produce mockups of sub-systems that will soon be tested in a radiation environment. Working with French laboratories ISAE (image sensors), CEA (LED illumination system), and Université Jean Monnet (optic system), a 15 mm mockup—small enough to fit inside a one euro coin—has been developed.

The FURHIS sub-systems will now be tested at the Belgian Nuclear Research Centre SCK•CEN.

Read the original story on the European Domestic Agency website.

Ronald C. Davidson, a pioneering plasma physicist for 50 years who directed the US Department of Energy's Princeton Plasma Physics Laboratory (PPPL) during a crucial period of its history and was a founding director of the Plasma Fusion Center at the Massachusetts Institute of Technology (MIT), passed away on 19 May at his home in Cranbury, New Jersey. He was 74.

"Ron was an anchor for the Laboratory both through his science and through his wisdom," said Stewart Prager, director of PPPL. "His prodigious contributions not just to PPPL's science but also to plasma physics writ large are clear and widely known. Within the Laboratory, he was a mentor and a guide to people young and old. His impact within the Laboratory was enormous."

The physicist won numerous honours in his lifetime, including the prestigious James Clerk Maxwell Prize in Plasma Physics in 2008, the highest national honour in plasma physics. He was a fellow of both the American Physical Society and the American Association for the Advancement of Science. Davidson was known as a prolific researcher, writer and academic.

Read the full-length obituary on the PPPL website.

New computer simulations at the Princeton Plasma Physics Laboratory (PPPL) indicate that an innovate start-up technique for tokamaks, called coaxial helicity injection (CHI), may support a strong electric current without a traditional solenoid magnet.

In tokamaks, a complex web of magnetic fields control the superhot plasma. In addition to large D-shaped magnets surrounding the vacuum vessel, a central electromagnet known as a solenoid participates in creating the twisting vortex that prevents the plasma from touching the tokamak's walls.

Compact spherical tokamaks, like the NSTX-U recently dedicated at PPPL, as well as future tokamaks may not have room for solenoids. During CHI, magnetic field lines, or loops, are inserted into the tokamak's vessel through openings in the vessel floor. The field lines then expand to fill the vessel space, like a balloon inflating with air, until the loops undergo a process known as magnetic reconnection and snap closed. The newly formed closed field lines then induce current in the plasma.

"Can we create and sustain a big enough magnetic bubble in a tokamak to support a strong electric current without a solenoid?" asks Physicist Fatima Ebrahimi, who performed the computer simulations. "The findings indicate that 'yes, we can do it.'"

Read the full article on the PPPL website.

--Image: Physicist Fatima Ebrahimi

In line with a First Plasma in 2017, the 41-tonne vacuum vessel of the MAST Upgrade project was returned to its concrete-shielded home in late May, where it can now be refitted with its components and systems before commissioning.

The upgraded MAST tokamak will help to add to the knowledge base for ITER by experimenting with key plasma physics issues.

Watch a short video of the milestone on the website of the Culham Centre for Fusion Energy (UK).

During the next Symposium on Fusion Engineering (SOFE June 2017), Fusion Technology Awards will be presented for the years 2016 and 2017 to individuals who have made outstanding and innovative contributions to research and development in the field of fusion technology.

The Awards each consist of a USD 3,000 cash prize and a plaque. Any person, regardless of nationality or Society affiliation, is eligible for the award, with the exception that no current member of the IEEE/NPSS Standing Committee on Fusion Technology may be considered. The nomination package should be sent to IEEE Senior Member Martin Nieto-Perez (m.nieto@ieee.org), and it should consist of a nomination letter describing the technical and/or leadership contributions on which the nomination is recommended and a resume from the candidate.

The nomination deadline for the 2016 Award is 15 June 2016.

For more detailed information on eligibility, basis for judging, nomination process and a list of past Award recipients, please visit IEEE_NPSS.org and go to the "Fusion Technology Awards" section.

In a report to the US Congress released on 26 May, the Department of Energy (DOE) recommends "that the US remain a partner in the ITER project through Fiscal Year 2018," at which time the country's participation in the project will need to be reassessed.

"At this time, our continued participation [...] is in the best interest of the nation," writes Energy Secretary Ernest Moniz in the introductory message to the report.

The 17-page report notes that "the management of the ITER Organization and the performance of the project have improved substantially" under Bernard Bigot's leadership. "The project is now being well-run."

However, "the improvements and performance, while promising, still require additional time to determine if they will be sustained and lead to the long-term success of the project."

Despite the accumulated delays "ITER remains the fastest path for the study of burning plasma," concludes the report.

Photo: Energy Secretary Ernest Moniz

Download the DOE report on US participation in ITER here.

The ITER Organization will participate in this year's international symposium Atoms for the Future—the annual meeting of students and young professionals from the nuclear field (more information here). ITER Director-General Bernard Bigot will be among the speakers on 27 June 2016, and two days later students will have the possibility to visit the ITER site in southern France.

Registration for Atoms for the Future also gives you access to the World Nuclear Exhibition (28-30 June 2016) where the ITER Organization will be also be present.

US Department of Energy (DOE) Secretary Ernest Moniz dedicated the most powerful spherical torus fusion facility in the world on 20 May 2016. The $94-million upgrade to the National Spherical Torus Experiment (NSTX-U), funded by the DOE Office of Science, is a spherical tokamak fusion device that explores the creation of high-performance plasmas at 100-million degree temperatures.

NSTX-U at the Princeton Plasma Physics Laboratory (PPPL) will allow researchers around the world to explore fusion reactions [...] "The vastly expanded capabilities of this spherical tokamak will enable us to explore new physics regimes and tackle the major engineering problems for fusion energy," Moniz said.

NSTX-U draws on a 65-year-old legacy of fusion energy research at Princeton University's Plasma Physics Laboratory where, in the 1950s, physicist Lyman Spitzer created a machine he called a stellarator to produce energy the same way as the Sun. Experimental stellarators and tokamaks, the two most prominent fusion reactor designs, now dot the globe.

"This is exciting new territory, and we're thrilled to embark on the next frontier of fusion research. This device could transform the world by showing us the way to a pilot plant design for the generation of power from fusion energy for use by all," said Stewart Prager, director, Princeton Plasma Physics Laboratory.

Read the full article on the PPPL website.

During an Industrial Info Day on 20 May, the ITER Organization presented an upcoming tender for electrical, cabling, instrumentation and control installation works to the representatives of 30 companies (48 participants).

The ITER Organization will now pre-qualify interested companies before launching the tender.

Industrial Info Days like this one are organized to inform industry about the scope of installation work to be performed under individual contracts and to encourage companies to participate in the tender. Companies have a chance to meet potential partners in Business-to-Business (B2B) meetings, with the aim of building better consortia in order to respond to the scale and challenges of the task. Info Days are also an opportunity for the ITER Organization to listen to industry and to get feedback on its strategy.

A new energy technology "distillate" has been published by Princeton University's Andlinger Center for Energy and the Environment on magnetic confinement fusion, a technology with "enormous promise" as a global energy source, according to the authors.

The paper presents some of the basic science relevant to fusion energy and the central technical challenges before addressing the economic prospects for commercial fusion, the differences between fusion and fission, and the politics and progress in the global effort to develop nuclear fusion.

Andlinger Center distillates aim to provide succinct yet substantive information to a non-specialist audience on emerging topics in energy and the environment that combine technological, economic, and policy considerations. This is the third in the series so far.

The full distillate can be downloaded here.

--Photo: a plasma in the Chinese tokamak EAST

On 28 April, the ITER Organization signed a contract with the European consortium GNMS for the procurement of approximately 10 km of vacuum pipework, ranging in diameter from DN 25 to DN 250.

The ITER vacuum system will be one of the largest in the world. Vacuum pumping is required prior to starting the fusion reaction to eliminate all sources of organic molecules and to create low density—about one million times lower than the density of air. The network of pipework will form one of the most extensive distributed systems in ITER, alongside cryogenic and water cooling systems.

The contract signature marks a significant step forward for the ITER vacuum system.

Are you a university graduate who wants to gain international professional experience and contribute to the work of the European Domestic Agency for ITER? Or who is curious about ITER and simply wants to be part of one of the most ambitious energy projects in the world today? The European Domestic Agency for ITER is looking for graduates in engineering, physics, law, human resources, finance and communication for four to nine months beginning 1 October 2016.

The traineeship program is open to university graduates who are nationals of one of the Member States of the European Union or Switzerland, who have at least a three-year university degree obtained within the last three years, and a very good knowledge of English. Traineeships are offered in Barcelona (Spain), Garching (Germany) and at the ITER site in France.

The deadline to apply is 31 May 2016. Please find all information here.

If new energy sources offer cheap, plentiful power to everyone, how will the planet cope? FutureProofing examines a new method of power generation promising clean, limitless power for everyone. Can it work, what are the consequences, and is there a viable alternative?

Fusion has long-promised cheap, clean and limitless power, but over half a century of effort this technology has still not delivered an operational power plant. Now hopes are high that a vast project in the south of France will finally crack the problems and deliver a working model that can be replicated around the world. FutureProofing presenters Timandra Harkness and Leo Johnson travel to Provence to find out what the prospects are for a scheme costing upwards of £10 billion which could transform the energy supply for us all and with it global geopolitics and the environment for centuries to come.

The program explores what viable alternatives there could be to generate power at the same scale for billions of people across the world, and whether such an alternative is a better route to achieving the goal of cheap, plentiful and clean energy for the future. (Producer: Jonathan Brunert)

Follow this link to the 42-minute broadcast.

--By John Greenwald

A promising experiment that encloses hot, magnetically confined plasma in a full wall of liquid lithium is undergoing a $2 million upgrade at the US Department of Energy's (DOE) Princeton Plasma Physics Laboratory (PPPL). Engineers are installing a powerful neutral beam injector in the laboratory's Lithium Tokamak Experiment (LTX), an innovative device used to test the liquid metal as a first wall that enhances plasma performance. The first wall material faces the plasma.

 "This will bring us one step closer to demonstrating this particular approach to fusion," said Dick Majeski, principal investigator of the LTX. The experiment is a collaborative effort that includes researchers from Oak Ridge National Laboratory, UCLA, the University of Tennessee, Knoxville, and Princeton University, as well as PPPL. Funding comes from the DOE Office of Science. 

The neutral beam injector, a Russian-built device on loan from the Tri Alpha fusion firm in California, will shoot energetic beams into the small spherical tokamak to fuel the core of the plasma and increase its temperature and density—key factors in fusion reactions. "The beams will maintain the density and raise the temperature to a more fusion-relevant level," said Philip Efthimion, PPPL head of the Plasma Science and Technology Department that includes the LTX.

The experiment recently became the first device in the world to produce flat temperatures in a magnetically confined plasma. Such flatness reduces the loss of heat from the plasma that can halt fusion reactions.  The LTX also has provided the first experimental evidence that coating a large area of walls with liquid lithium can produce high-performance plasmas.

However, without fuelling from the neutral beam the density of an LTX plasma tends to drop off fast. The beam upgrade will keep the density from dropping, and test whether the liquid lithium coating can continue to maintain flat temperatures in much hotter plasmas.

Read the full story on the PPPL website.

In its May 2016 issue, Nature Physics has produced an Insight on Nuclear Fusion that features an interview with ITER Director-General Bernard Bigot, a commentary by Steven Cowley (current Chief Executive Officer of the UK Atomic Energy Agency and Head of the EURATOM/CCFE Fusion Association), and a review of the fascinating physics that lies at the heart of nuclear fusion.

A full list of content is available at this link. (Content may be accessed through a subscription to Nature Physics or rental/purchase.)

Watch humans and robots work together inside the JET mockup at the Culham Centre for Fusion Energy (CCFE) in the UK.

Video via Tom Scott/CCFE