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Robotics & Remote Systems
The Mission of the Robotics and Remote Systems Division is to promote the development and application of immersive simulation, robotics, and remote systems for hazardous environments for the purpose of reducing hazardous exposure to individuals, reducing environmental hazards and reducing the cost of performing work.
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2024 ANS Annual Conference
June 16–19, 2024
Las Vegas, NV|Mandalay Bay Resort and Casino
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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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Latest News
Proving DRACO will deliver
The United States is now closer than it has been in over five decades to launching the first nuclear thermal rocket into space, thanks to DRACO—the Demonstration Rocket for Agile Cislunar Orbit.
Shashi Kant Verma, Samiran Shanti Mukherjee, Ranjana Gangradey, R. Srinivasan, Vishal Gupta, Paresh Panchal, Pratik Nayak
Fusion Science and Technology | Volume 76 | Number 6 | August 2020 | Pages 770-785
Technical Note | doi.org/10.1080/15361055.2020.1777674
Articles are hosted by Taylor and Francis Online.
For the last 15 to 20 years, substantial advancement has been achieved globally in the field of pellet injector technology (PIT). Nuclear fusion is a method for producing high-energy neutrons, alpha particles, and an enormous amount of energy with the help of thermonuclear reaction of hydrogen isotopes. The way of producing this huge energy source is similar to that of the sun’s generated energy. This type of energy does not produce greenhouse gases or a high-level radioactive surplus. Solid hydrogen is used as a fuel in a fusion reactor in the form of pellets of different diameters and lengths. These pellets are produced by a pellet injector. In the sophisticated fueling system, these pellets are continuously produced with the help of a twin-screw extruder (TSE) and cooled by more than one cryocooler or liquid helium. Each pellet injection system has its pros and cons. We have identified different injection criteria for different types of injectors. Higher-density, continuous injection with high reliability is the major constraint of a future pellet injection system such as the Gifford-McMahon cryocooler-based TSE. In the past, limited innovative applications for PIT were established and used effectively in fusion experiments. At the present time, an innovative cryogenic-based extrusion system is being designed to meet the different injection criteria. This technical notepresents the progress of eminent activities, discusses some of the best models as developed by Fisher and Arumugam et al., and highlights recent progress. Gray areas such as non-Newtonian behavior of solid H2 with thermodynamics analysis are also discussed as well as associated challenges with recent key developments in the field of PIT.