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Conference Spotlight
Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
Standards Program
The Standards Committee is responsible for the development and maintenance of voluntary consensus standards that address the design, analysis, and operation of components, systems, and facilities related to the application of nuclear science and technology. Find out What’s New, check out the Standards Store, or Get Involved today!
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Nuclear Science and Engineering
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Nuclear Technology
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Fusion Science and Technology
Latest News
Deep Space: The new frontier of radiation controls
In commercial nuclear power, there has always been a deliberate tension between the regulator and the utility owner. The regulator fundamentally exists to protect the worker, and the utility, to make a profit. It is a win-win balance.
From the U.S. nuclear industry has emerged a brilliantly successful occupational nuclear safety record—largely the result of an ALARA (as low as reasonably achievable) process that has driven exposure rates down to what only a decade ago would have been considered unthinkable. In the U.S. nuclear industry, the system has accomplished an excellent, nearly seamless process that succeeds to the benefit of both employee and utility owner.
Joseph B. Tipton, Jr., Arnold Lumsdaine, Charles Schaich, Gregory R. Hanson
Fusion Science and Technology | Volume 72 | Number 4 | November 2017 | Pages 616-622
Technical Paper | doi.org/10.1080/15361055.2017.1350486
Articles are hosted by Taylor and Francis Online.
The ITER Electron Cyclotron Heating (ECH) system Transmission Lines (TL) require highly polished copper mirrors on miter bends (both 90° and 140°) to direct microwaves from their origin to the tokamak. This will result in substantial heat dissipation on the miter bends and mirrors and will require water cooling in order to achieve long pulse operation. Analysis and optimization of the cooling design for the 140° miter bend assembly used ANSYS® Multiphysics™ software to develop and verify the fluid, thermal, and structural behavior of the mirror and miter bend assembly. Simulation model choices included a thermo-mechanical model of the mirror-only, a thermo-mechanical model of the miter bend assembly, and a thermo-mechanical model of the mirror with coolant. These analyses revealed an optimal solution that uses a major-axis cooling channel configuration for the 140° miter bend to meet the design criteria (e.g. structural stresses, mirror deflection, vacuum seal, coolant temperatures and pressures).
