The Power Plant Physics & Technology department of EUROfusion is currently in the pre-conceptual design phase of DEMO, the envisaged single step between ITER and a first commercial Fusion Power Plant (FPP). To meet the device’s heating and current drive (H&CD) requirements neutral beam injection (NBI) appears appealing due to the promising current drive efficiency predictions. However, DEMO – which, if designed as a tokamak, could be either a pulsed or a steady state device relying on completely non-inductive current drive – has requirements that go well beyond those of the NBI on ITER, e.g. regarding system efficiency.
The talk will introduce the European DEMO project and its H&CD requirements. Following a brief introduction to H&CD by NBI, the major technological challenges are presented and some of the prospective solutions that could carry NBI from ITER to DEMO.
About the speakers
Christian Hopf received the Diploma degreein physics from the Technical University ofMunich, Munich, Germany, in 1999, and theDr. rer. nat. degree in physics from the University of Bayreuth, Bayreuth, Germany, in 2003.He joined the IPP in 1998, where hewas involved in plasma-wallinteractiondepartment from the Diploma thesis until 2007.
In 2007, he joined the Neutral Beam Injection (NBI) Group, IPP, where he has since been responsible forthe NBI system on ASDEX Upgrade. His currentresearch interests include fast ion physics and neutral beam current drive intokamaks. He furthermore plays an active part in IPP’s DEMO-related NBI activities.