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Latest News
IAEA project aims to develop polymer irradiation model
The International Atomic Energy Agency has launched a new coordinated research project (CRP) aimed at creating a database of polymer-radiation interactions in the next five years with the long-term goal of using the database to enable machine learning–based predictive models.
Radiation-induced modifications are widely applicable across a range of fields including healthcare, agriculture, and environmental applications, and exposure to radiation is a major factor when considering materials used at nuclear power plants.
Lucile S. Dauffy, Hesham Y. Khater, Shivakumar Sitaraman, Sandra J. Brereton
Fusion Science and Technology | Volume 56 | Number 2 | August 2009 | Pages 736-740
Nuclear Analysis | Eighteenth Topical Meeting on the Technology of Fusion Energy (Part 2) | doi.org/10.13182/FST18-P1.38
Articles are hosted by Taylor and Francis Online.
Commissioning shots have commenced at the National Ignition Facility (NIF) at the Lawrence Livermore National Laboratory. Within a year, the 192 laser beam facility will be operational and the experimental phase will begin. At each shot, the emitted neutrons will interact with surroundings, activating them, especially inside the target bay where the neutron flux is the highest. We are calculating the dose from those activated structures and objects in order to plan and minimize worker exposure during maintenance and normal NIF operation. This study presents the results of the activation analysis of the optics of the Final Optics Assemblies (FOA), which are a key contributor to worker exposure. There are 48 FOAs weighting three tons each, and routine change-out and maintenance of optics and optics modules is expected. We found that the effective dose from any optics is negligible 6 days after the last shot, and that the effective dose from frames is low but should be minimized not to reach the dose limit.