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Fusion Science and Technology
Latest News
Securing the advanced reactor fleet
Physical protection accounts for a significant portion of a nuclear power plant’s operational costs. As the U.S. moves toward smaller and safer advanced reactors, similar protection strategies could prove cost prohibitive. For tomorrow’s small modular reactors and microreactors, security costs must remain appropriate to the size of the reactor for economical operation.
Peter Franzen, Michael Kaufmann, Vitus F. Mertens, Gregor Neu, Gerhard Raupp, Thomas Zehetbauer, The ASDEX Upgrade Team, The NI Team
Fusion Science and Technology | Volume 33 | Number 1 | January 1998 | Pages 84-96
Technical Paper | doi.org/10.13182/FST98-A19
Articles are hosted by Taylor and Francis Online.
An algorithm is presented that identifies major confinement regimes on-line during a plasma discharge in the Tokamak ASDEX Upgrade. Apart from the ohmically heated regime with no additional heating power, low and high radiative L and H regimes are distinguished. The algorithm was successfully implemented in the ASDEX Upgrade discharge control system, allowing a dynamic control of the plasma discharge. In a first application, the control system recognized the falling back of the plasma from a high confinement regime to a low confinement regime and reacted accordingly, avoiding a disruption and enhancing the plasma performance by recovering the high confinement regime.