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At the Culham Centre for Fusion Energy (CCFE), researcher Fulvio Militello is working on a statistical model that compares the seemingly random movement of filaments (structures that emerge at the edges of the hot plasma) to the behaviour of raindrops. In the same way that each unique raindrop follows the same laws of physics (they hit the pavement), filaments that differ in strength, speed, size, amplitude or position follow certain rules as they move. Militello's model estimates collective behaviour in order to give scientists a tool to predict and control them. Read more about his theory on the CCFE website.

In working with data from the DIII-D tokamak, physicists Ahmed Diallo and Julien Dominski from the Princeton Plasma Physics Laboratory (PPPL) have uncovered a trigger for a particular type of ELM—fiery bursts of plasma called Edge Localized Modes—that does not fit into present models. Their findings could shed light on the variety of mechanisms leading to the onset of ELMs and could broaden the portfolio of ELM suppression tools. Read the full report on the PPPL website.

On October 9 2014, fusion research bodies from European Union member states and Switzerland signed an agreement to cement European collaboration on fusion research and EUROfusion—the European Consortium for Development of Fusion Energy—was born. EUROfusion supports and funds fusion research activities on behalf of the European Commission's Euratom program. Today, there are 30 participating research organizations and universities from 26 European member states plus Switzerland and the Ukraine.

Beginning this month, Ambrogio Fasoli replaces Jérome Pamela as the Chair of EUROfusion's decision-making body, the General Assembly. Jérome Pamela had been in the role since January 2015.

Challenges ahead for the new Chair include the transition to the next European research and innovation framework program, Horizon Europe; navigating the uncertainties linked to Brexit; and the strategic direction of EUROfusion as it pursues the objectives laid out in the European Roadmap to Fusion Electricity.

Read interviews of the incoming and outgoing Chairs on the EUROfusion website.

See an on-line biography of the new Chair on the EPFL website.

Every year in December, the annual meeting of the Fusion Power Associates brings together senior representatives of the US and international fusion communities and US policymakers to review the status of fusion research and consider the way forward.

The 39th annual meeting, organized in Washington D.C. on 4-5 December 2018 on the topic of "Strategies and Expectations Through the 2020s," was no different—representatives from US government and US national labs and universities mixed with representatives from programs in Canada, China, Germany, Japan, Korea, the United Kingdom and, of course, ITER to review the fusion research landscape and promising paths to fusion energy.

All presentations from the 39th Annual Meeting can be downloaded here.

Researchers at the Princeton Plasma Physics Laboratory in the US are reporting findings that can be beneficial to ITER, says John Greenwald on the laboratory's website.

Results published by theoretical physicist Allan Reiman and his colleague Professor Nat Fisch in Physical Review Letters focus on so-called tearing modes—instabilities in the plasma that create magnetic islands, which are a key source of plasma disruptions.

Currents driven by radio frequency waves in the interior of these magnetic islands can stabilize deleterious tearing modes, an effect that is augmented by small perturbations in the plasma's temperature.

"When the power deposition in the island exceeds a threshold level, there is a jump in the temperature that greatly strengthens the stabilizing effect," says Reiman. "This allows the stabilization of larger islands than previously thought possible."

Read the full report on the PPPL website.

Physicists Allan Reiman, left, and Nat Fisch. (Photos by Elle Starkman)