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November 9–12, 2025
Washington, DC|Washington Hilton
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Latest News
Empowering the next generation: ANS’s newest book focuses on careers in nuclear energy
A new career guide for the nuclear energy industry is now available: The Nuclear Empowered Workforce by Earnestine Johnson. Drawing on more than 30 years of experience across 16 nuclear facilities, Johnson offers a practical, insightful look into some of the many career paths available in commercial nuclear power. To mark the release, Johnson sat down with Nuclear News for a wide-ranging conversation about her career, her motivation for writing the book, and her advice for the next generation of nuclear professionals.
When Johnson began her career at engineering services company Stone & Webster, she entered a field still reeling from the effects of the Three Mile Island incident in 1979, nearly 15 years earlier. Her hiring cohort was the first group of new engineering graduates the company had brought on since TMI, a reflection of the industry-wide pause in nuclear construction. Her first long-term assignment—at the Millstone site in Waterford, Conn., helping resolve design issues stemming from TMI—marked the beginning of a long and varied career that spanned positions across the country.
V. Erckmann; W. Kasparek; Y. Koshurinov; L. Lubyako; M. I. Petelin; D. Yu. Shchegolkov; F. Hollmann; G. Michel; F. Noke; F. Purps; ECRH Groups at IPP Greifswald, IPF Stuttgart, IAP Nizhny Novgorod, FZK Karlsruhe, IFP Milano
Fusion Science and Technology | Volume 55 | Number 1 | January 2009 | Pages 23-30
Technical Paper | Electron Cyclotron Emission and Electron Cyclotron Resonance Heating | doi.org/10.13182/FST09-A4050
Articles are hosted by Taylor and Francis Online.
Experiments on the combination of the high-power wave beams from two gyrotrons and fast switching of the combined beam between two transmission channels are described. The measurements were performed using a high-power resonator diplexer in the optical transmission line of the electron cyclotron heating system for W7-X. The principle and the engineering design of the prototype four-port quasi-optical diplexer is presented. The wave beams from two gyrotrons with output powers of 370 and 560 kW, respectively, have been combined for pulse lengths up to 10 s, limited only by the uncooled mirrors used in the diplexer. By modulating the gyrotron frequency using a fast high-voltage body modulator, controlled toggling of the combined power between the two outputs of the diplexer was demonstrated with switching frequencies of up to 20 kHz.The experiments are compared to theory, showing good agreement when the limited stability of the free-running gyrotrons is taken into account.
