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Analytical RF Pulse Heating Analysis for High Gradient Accelerating Structures

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Analytical RF Pulse Heating Analysis for High Gradient Accelerating Structures

dc.contributor.author	González Iglesias, Daniel
dc.contributor.author	Esperante Pereira, Daniel
dc.contributor.author	Gimeno Martínez, Benito
dc.contributor.author	Boronat Arévalo, Marçà Josep
dc.contributor.author	Blanch, César
dc.contributor.author	Fuster Martínez, Nuria
dc.contributor.author	Martínez-Reviriego, Pablo
dc.contributor.author	Martín-Luna, Pablo
dc.contributor.author	Fuster Verdú, Juan A.
dc.date.accessioned	2021-07-09T08:41:06Z
dc.date.available	2021-07-10T04:45:05Z
dc.date.issued	2021	es_ES
dc.identifier.uri	https://hdl.handle.net/10550/79894
dc.description.abstract	The main aim of this work is to present a simple method, based on analytical expressions, for obtaining the temperature increase due to the Joule effect inside the metallic walls of an RF accelerating component. This technique relies on solving the 1-D heat-transfer equation for a thick wall, considering that the heat sources inside the wall are the ohmic losses produced by the RF electromagnetic fields penetrating the metal with finite electrical conductivity. Furthermore, it is discussed how the theoretical expressions of this method can be applied to obtain an approximation to the temperature increase in realistic 3-D RF accelerating structures, taking as an example the cavity of an RF electron photoinjector and a traveling wave linac cavity. These theoretical results have been benchmarked with numerical simulations carried out with commercial finite-element method (FEM) software, finding good agreement among them. Besides, the advantage of the analytical method with respect to the numerical simulations is evidenced. In particular, the model could be very useful during the design and optimization phase of RF accelerating structures, where many different combinations of parameters must be analyzed in order to obtain the proper working point of the device, allowing to save time and speed up the process. However, it must be mentioned that the method described in this article is intended to provide a quick approximation to the temperature increase in the device, which of course is not as accurate as the proper 3-D numerical simulations of the component.	es_ES
dc.description.sponsorship	European Union’s Horizon 2020 Research and Innovation Programme under Grant 777431 (XLS CompactLight)	es_ES
dc.description.sponsorship	Valencian Regional Government VALi+D Postdoctoral under Grant APOSTD/2019/155	es_ES
dc.language.iso	en	es_ES
dc.source	D. González-Iglesias, D. Esperante, B. Gimeno, M. Boronat, C. Blanch, N. Fuster-Martínez, P. Martinez-Reviriego, P. Martín-Luna, J. Fuster, Analytical RF Pulse Heating Analysis for High Gradient Accelerating Structures, IEEE Transactions on Nuclear Science, vol. 68, no. 2, pp. 78-91, Feb. 2021. doi: 10.1109/TNS.2021.3049319.	es_ES
dc.subject	estructuras aceleradoras de RF	es_ES
dc.subject	RF pulse heating	es_ES
dc.subject	análisis térmico	es_ES
dc.title	Analytical RF Pulse Heating Analysis for High Gradient Accelerating Structures	es_ES
dc.type	journal article	es_ES
dc.subject.unesco	UNESCO::FÍSICA::Nucleónica::Aceleradores de partículas	es_ES
dc.identifier.doi	https://doi.org/10.1109/TNS.2021.3049319	es_ES
dc.description.abstractenglish	The main aim of this work is to present a simple method, based on analytical expressions, for obtaining the temperature increase due to the Joule effect inside the metallic walls of an RF accelerating component. This technique relies on solving the 1-D heat-transfer equation for a thick wall, considering that the heat sources inside the wall are the ohmic losses produced by the RF electromagnetic fields penetrating the metal with finite electrical conductivity. Furthermore, it is discussed how the theoretical expressions of this method can be applied to obtain an approximation to the temperature increase in realistic 3-D RF accelerating structures, taking as an example the cavity of an RF electron photoinjector and a traveling wave linac cavity. These theoretical results have been benchmarked with numerical simulations carried out with commercial finite-element method (FEM) software, finding good agreement among them. Besides, the advantage of the analytical method with respect to the numerical simulations is evidenced. In particular, the model could be very useful during the design and optimization phase of RF accelerating structures, where many different combinations of parameters must be analyzed in order to obtain the proper working point of the device, allowing to save time and speed up the process. However, it must be mentioned that the method described in this article is intended to provide a quick approximation to the temperature increase in the device, which of course is not as accurate as the proper 3-D numerical simulations of the component.	es_ES
dc.accrualmethod	-	es_ES
dc.embargo.terms	0 days	es_ES