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2025 ANS Winter Conference & Expo
November 9–12, 2025
Washington, DC|Washington Hilton
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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.
Reinhard Uhlemann, Jef Ongena
Fusion Science and Technology | Volume 35 | Number 1 | January 1999 | Pages 42-53
Technical Paper | doi.org/10.13182/FST99-A76
Articles are hosted by Taylor and Francis Online.
The neutral beam injectors of the tokamak experiment TEXTOR produce neutral particle beams in the megawatt range at 55 keV and up to a 10-s pulse length of the light atoms hydrogen, deuterium, 3He, and 4He for heating the fusion plasma of TEXTOR. The two injectors are equipped with one 5-MW ion source (plug-in neutral injector) each. The injected power of ~1.5 MW of each injector can be varied from 0 to 100% by opening the main beam target vertical aperture in steps of ~2 cm to the full opening of 50 cm. The symmetric truncation of the neutral beam profile at a target position 4.5 m from the ion source leads to no major deformation of the profile downstream at the entrance into the torus plasma at a 6-m distance from the ion source. Whereas usually the particle energy, i.e., acceleration voltage, and beam current or, alternatively, the gas pressure in the neutralizer at fixed energy must be varied to change the injected power, these beam parameters can be kept constant with the reported method to study the effect of different injected neutral beam powers on the fusion plasma. The transmitted power to the torus is detected by the calorimetrically measured remaining power on the beam target. The resulting transmitted neutral beam power as a function of the target aperture is in good agreement with the expected integral of the thus-truncated Gaussianlike beam profile, i.e., the error function. The scaling of the resulting injected neutral beam power, beam profiles, vertical full-width-at-half-maximum, and central power density with variation of the beam target aperture are in good agreement with the beamline simulation code PADET.
