Suchergebnisse

Within the HIPPI (high intensity pulsed proton injector) project, supported by the 6th PCRD (framework programme for research and development) of the European Union, the German research centre Forschungszentrum Jülich proposed a multi-spoke H-cavity for the intermediate energy section (β = 0.5) of high power proton linear accelerators. The IPN Orsay is associated with FZ Jülich for the prototype design, and before that, all preliminary mechanical studies. A triple-spoke superconducting cavity has a more complicated geometry, compared to the same beta elliptical cavity. As a consequence the design requires some sophisticated tools, like the CAD (computer aided design) code Catia. In addition, in order to solve the specific mechanical problems imposed by external constraints, a sophisticated mechanical simulation tool Cast3m (Calcul et Analyse de Structure et Thermique par la méthode des Eléments Finis) is used [H. Gassot, in: Proceedings of the 8th European Particle Accelerator Conference, June 2002, Paris, [1]]. But no commercial modeling/FEA exchange software exists between Catia and Cast3m, so the first investigation consisted in the development of a dedicated program for this purpose. The mechanical behaviour of the triple spoke cavity in static and dynamic regime was studied with these codes. The results are presented and discussed in this report.

Within the HIPPI (high intensity pulsed proton injector) project, supported by the 6th PCRD (framework programme for research and development) of the European Union, the German research centre Forschungszentrum Jülich proposed a multi-spoke H-cavity for the intermediate energy section (β = 0.5) of high power proton linear accelerators. The IPN Orsay is associated with FZ Jülich for the prototype design, and before that, all preliminary mechanical studies. A triple-spoke superconducting cavity has a more complicated geometry, compared to the same beta elliptical cavity. As a consequence the design requires some sophisticated tools, like the CAD (computer aided design) code Catia. In addition, in order to solve the specific mechanical problems imposed by external constraints, a sophisticated mechanical simulation tool Cast3m (Calcul et Analyse de Structure et Thermique par la méthode des Eléments Finis) is used [H. Gassot, in: Proceedings of the 8th European Particle Accelerator Conference, June 2002, Paris, [1]]. But no commercial modeling/FEA exchange software exists between Catia and Cast3m, so the first investigation consisted in the development of a dedicated program for this purpose. The mechanical behaviour of the triple spoke cavity in static and dynamic regime was studied with these codes. The results are presented and discussed in this report.

AbstractIn this article, we focus on the subset of evolutionary theorising self-identified as Feminist Evolutionary Analytic (FEA) within security studies and International Relations. We offer this accounting in four sections. First, we provide a brief overview of the argument that reproductive interests are the 'origins' of international violence. Second, we break down the definitions of gender, sex, and sexuality used in evolutionary work in security studies generally and in FEA specifically, demonstrating a lack of complexity in FEA's accounts of the potential relations among the three and critiquing their essentialist heteronormative assumptions. Third, we argue that FEA's failure to reflect on the history and context of evolutionary theorising, much less contemporary feminist critiques, facilitates its forwarding of the state and institutions as primarily neutral and corrective bulwarks against male violence. Fourth, we conclude by outlining what is at stake if we fail to correct for this direction in feminist, IR, and security research. We argue that FEA work misrepresents and narrows the potential for understanding and responding to violence, facilitating the continued instrumentalisation of women's rights, increased government regulation of sexuality, and a more expansive form of militarism.