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Fusion Science and Technology
Latest News
Fermilab center renamed after late particle physicist Helen Edwards
Fermi National Accelerator Laboratory’s Integrated Engineering Research Center, which officially opened in January 2024, is now known as the Helen Edwards Engineering Center. The name was changed to honor the late particle physicist who led the design, construction, commissioning, and operation of the lab’s Tevatron accelerator and was part of the Water Resources Development Act signed by President Biden in December 2024, according to a Fermilab press release.
Aigars Vitins, Vitalijs Zubkovs, Gunta Kizane, Elina Pajuste, Valentina Kinerte
Fusion Science and Technology | Volume 60 | Number 3 | October 2011 | Pages 1143-1146
Blanket and Breeder Materials | Proceedings of the Ninth International Conference on Tritium Science and Technology | doi.org/10.13182/FST11-A12617
Articles are hosted by Taylor and Francis Online.
In this paper, we present results on tritium release from the beryllium pebbles irradiated for 294 full power days from 17 April 2003 to November 2004 to the neutron fluence of 1.5-2 × 1025 m-2 (E>1 MeV) at temperature 523-773 K in the pebble-bed assemblies (PBA) experiment in the high flux reactor (HFR) at Petten, the Netherlands. Stages of gradual and burst release are evident in the tritium release of the PBA Be pebbles at a temperature ramp of 2.3-4.8 K/min from room temperature to 1310-1520 K. These two stages may be related to the tritium release by atomic diffusion and bubble venting respectively. The main maximum of the tritium release rate of the PBA Be pebbles was found to be in the temperature ranges of 1178-1309 K and 1178-1350 K at the temperature ramps of 2.4 and 4.8 K/min respectively. The tritium inventory and abundance ratios of chemical forms of tritium localized in the pebbles were determined with dissolution methods. The total tritium inventory in the PBA Be pebbles was found to be 2-4 GBq/g.
