Search

While ITER takes shape, plasma physicists continue searching for answers to some rather tough questions. What causes a plasma to go from a weakly confined, turbulent state to a more defined and calmer state which is necessary for fusion to occur? Answering this question, scientists from the Princeton Plasma Physics Laboratory, the University of California and the Massachusetts Institute of Technology join forces to simulate tokamak plasmas.

With the help of a supercomputer located at the Oak Ridge National Laboratory (ORNL) called Titan, the research team uncovered for the first time the basic physics behind a plasma's transition into the high-confinement or H-mode.

Future simulations will study the transition of a plasma into H-mode at ITER scale. An issue of crucial importance is the right balance between the core temperature of a plasma and the temperature at its edge, which will have an effect on the size of the plasma.

These simulations are of unprecedented scale. Only with such high-performance computing resources such as Titan involving over 18,000 graphic processing units (GPUs) and close to 300,000 central processing units (CPUs), can problems of such great scientific complexity and importance be addressed.

See the full article on the ORNL website here.

Early January, ITER's Director-General spoke with Foro Nuclear, the Spanish nuclear industry forum. The exchange covered the challenge of leading a multicultural project, the critical phase ahead as ITER begins assembly activities, and Bernard Bigot's conviction that there is nothing more exciting, more motivating, than contributing to a project that could change the course of civilization for hundreds of thousands of years.

Excerpts below

On managing one of the world's largest research projects:

I accepted the Council's offer at a crucial moment in ITER history, when the project was entering into manufacturing and preparations for assembly. This new phase required a new organization—one tailored to meet the double challenge of delivering an installation that is both a research facility and an industrial facility.  What we needed at that point and need even more today was integration.

ITER is a complex structure, with a central team here in France and seven "domestic agencies" emanating from the seven ITER Members that are responsible for the in-kind procurement of machine components and installation systems. To achieve this integration, we needed a clear, centralized decision-making process under the authority of the Director-General. This being established and accepted by all, we could move on, as "One ITER," to promote and establish a project culture based on shared values of excellence, adherence to commitments, adherence to schedule and budget, and careful and effective use of public funds. And all the while making safety and quality our highest priority.

On striving for excellence in a multicultural environment:

How do we achieve harmony and efficiency? Through mutual respect and the understanding that each culture has its own work habits, traditions and "best practices." However at the end of the day, after well documented debates, decisions have to be taken and implemented by all. The global world we live in has not erased national particularisms. But instead of seeing this as a problem, we see it as an asset: we are building a project culture in a way that takes advantage of the diversity of these "best practices" to achieve an optimal result. 

On considering a job at ITER:

I've often said that, when joining ITER you symbolically abandon your nationality. You become Iternational... Working at ITER is very demanding but it is also very rewarding. Can you think of something more exciting, more motivating, than contributing to a project that can change the course of civilization for hundreds of thousands of years?

On the importance of fusion

My conviction is that in the second half of this century, beyond 2060, we will have accumulated enough knowledge and experience to create a large fusion industry—just like in the past decades we have created an oil, gas or nuclear fission industry. But like with any of these industries, the decision will be both technical and political and rest in the individual governments' and investors' hands.

Follow these links to read the article in English or Spanish.

Bored with the Kardashians? Not interested in your regular TV program? You can now tune in to a new channel that will allow you to follow—in real time!—the construction of the Tokamak Complex.

Streamed from a video camera mounted 60 metres above platform level, the footage gives you an eagle eye's view of the ongoing activities in the Holy of Holies of the ITER Project —day and night, any day, any hour.

Follow this link to the ITER homepage.

On 18 December 2017, the current was raised in the divertor coils and the very first X-point plasma was obtained in the WEST tokamak (France).

The current was raised in limiter configuration up to 500 kA and controlled during a couple of seconds, while the divertor coils entered into action and an ITER-like configuration was reached.

The WEST project consists in transforming the former Tore Supra tokamak in order to extend its long pulse capability and test ITER's divertor technology. The implementation of a full tungsten, actively cooled divertor with plasma-facing units that are representative of ITER's divertor targets will allow scientists and engineers to address the risks both in terms of industrial-scale manufacturing and operation.

Read all about the test campaign underway in WEST's December 2017 newsletter here.

The L'Oréal Foundation, in partnership with UNESCO and the French Academy of Sciences, is calling for applications to its 2018 "For Women in Science" Fellowship program.

Thirty young and talented female scientists at the doctoral or postdoctoral level will be selected this year in France. Candidates must be specialized in Life or Physical Sciences, currently work or study in France, and demonstrate academic excellence and original research. 

The application deadline is 4 April 2018.

For full information, please see the website in English and French.

EyeSteelFilm's 90-minute documentary on fusion and ITER—Let there be light—is now available worldwide for rent or purchase on the Vimeo platform. For audiences in North America it is also available on iTunes for purchase and on Amazon Prime for rent or purchase.

Subtitled ''The 100 Year Journey to Fusion,'' the documentary shows work underway around the world at both ends of the fusion spectrum—from the giant ITER Project to the warehouse-based startup. It has had success at film festivals in North America and Europe since its launch in early 2017 and major international broadcast stations are showing interest. The European culture channel Arte is set to show the documentary in the coming months.

In early January 2018, "Let there be light" was listed as one of the top ten Canadian films in 2017.

The documentary is now available for rent or purchase worldwide on Vimeo.com in English or French. In North America it is also available for purchase on iTunes and for purchase or rent on Amazon Prime, both in English.

The JT-60SA tokamak is part of the Broader Approach agreement signed between Japan and Euratom to complement the ITER Project and accelerate the realization of fusion energy. The JT-60SA tokamak represents an upgrade of a previous tokamak at the Naka facility, designed to support the operation of ITER. It will investigate how best to optimize the design and operation of fusion power plants built after ITER. First Plasma is planned for 2020, at the end of a six-year assembly and commissioning period.

In the latest news of progress, 12 cryostat vessel sectors manufactured in Spain are now ready for transport to Naka. Heavy frames and robust plastic and tarpaulin wrapping will ensure adequate protection during transport of the sectors, each measuring approximately 11 metres in height, and during storage in Japan. (Storage is required as the elements will arrive ahead of their scheduled assembly in the JT-60SA Torus Hall.)

Along with the completed cryostat vessel sectors the shipment also includes heavy lifting equipment. In total the shipment weighs about 322 tonnes. It is scheduled to arrive at the Hitachi port in Japan by mid-January 2018.

See the full article here and related information here.

The ASDEX Upgrade at the Max-Planck Institute for Plasma Physics (IPP) in Garching, Germany, is one of three medium-sized tokamaks which are part of the EUROfusion program. In conjunction with JET it provides important input to the ITER Project.

The 18th issue of the ASDEX Upgrade Letter provides the latest news in three topics. The first presents results of research on plasma stability, in particular on instabilities in the plasma edge. The second item describes the use of a newly upgraded core turbulence microwave diagnostic system, known as correlation electron cyclotron emission (CECE). Thanks to the CECE, plasma physicists will have a better understanding of turbulence in fusion plasmas.

A third contribution focuses on alternative power exhaust concepts for the APDEX Upgrade tokamak. The extraction of the power produced in a future reactor poses one of the challenges in fusion research. In the ASDEX Upgrade the lower divertor is normally used for this purpose; now, scientists are investigating alternative configurations with a new, modified upper divertor. The design phase has already started and first hardware installation is expected in 2020/2021.

The Letter also honours the young IPP physicist Benedikt Geiger who was awarded the Hans Werner Osthoff Plasma Physics Prize 2016. The prize honours outstanding achievements in the field of plasma physics.

For more information and access to the ASDEX Upgrade Letter click here.

The Polish Institute of Plasma Physics and Laser Microfusion (IPPLM) invites young scientists to attend the 14th Kudowa Summer School. The summer school, under the motto "Towards fusion energy," will be held in Kudowa-Zdrój, in the Lower Silesia region in southwest Poland, from 4 to 8 June 2018.

The school provides courses on fusion energy, plasma experiments and related technology. It will mainly look at laser fusion and laser-matter interaction studies. Topics include plasma basics and fusion energy; inertial confinement fusion; magnetic confinement fusion; plasma-diagnostics; and technology.

Registration is open until 20 March 2018. Interested participants are encouraged to give presentations. The deadline for submitting abstracts is 8 February 2018.

For all related information please go to the Kudowa Summer School website.

One of the big challenges in developing fusion energy is controlling the plasma. Disruptions of the burning plasma can halt the fusion reaction and damage the walls of the fusion device. Scientists therefore are keen to learn how to predict plasma disruptions.

Researchers at the Princeton Plasma Physics Laboratory (PPPL) employ artificial intelligence to improve predictive capability. They developed predictive software, the Fusion Recurrent Neural Network (FRNN) code, which is a form of what is called "deep learning"—a powerful version of modern machine-learning software. (Research team: William Tang, to the left; Eliot Feibush; and Alexey Svyatkovskiy, seated)

Drawing from data of the JET facility in the UK, the team has demonstrated the tool's ability to predict disruptions more accurately than previous methods. Turning their attention now to ITER, the team aims to improve the correct prediction of disruptions and reduce the number of false alarms.

The deep learning software is also a challenge for computing hardware. Several tests with the FRNN on modern powerful supercomputing devices, so-called GPU clusters, in the United States, Europe and Asia showed promising results.

Read the full article on the PPPL website.