CERN Accelerating science

Published Articles
Title	First results of SRF cavity fabrication by electro-hydraulic forming at CERN
Author(s)	Atieh, Said (CERN) ; Alleman, Daniel (Unlisted, FR) ; Amorim Carvalho, Alexandre (CERN) ; Aviles Santillana, Ignacio (CERN) ; Avrillaud, Gilles (Unlisted, FR) ; Bertinelli, Francesco (CERN) ; Bonafe, Jonathan (Unlisted, FR) ; Calaga, Rama (CERN) ; Capatina, Ofelia (CERN) ; Favre, Gilles (CERN) ; Garlaschè, Marco (CERN) ; Gerigk, Frank (CERN) ; Langeslag, Stefanie (CERN) ; Mandel, Eric (Unlisted, FR) ; Marty, Philippe (Unlisted, FR) ; Peronnet, Hervé (Unlisted, FR) ; Plaut, Rani (Unlisted, FR) ; Schirm, Karl (CERN) ; Valverde Alonso, Nuria (CERN)
Publication	2015
Number of pages	7
In:	17th International Conference on RF Superconductivity, Whistler, Canada, 13 - 18 Sep 2015, pp.THAA05
DOI	10.18429/JACoW-SRF2015-THAA05
Subject category	Accelerators and Storage Rings
Abstract	In the framework of many accelerator projects relying on RF superconducting technology, shape conformity and processing time are key aspects for the optimization of niobium cavity fabrication. An alternative technique to traditional shaping methods, such as deep-drawing and spinning, is Electro-Hydraulic Forming (EHF). In EHF, cavities are obtained through ultra-high-speed deformation of blank sheets, using shockwaves induced in water by a pulsed electrical discharge. With respect to traditional methods, such a highly dynamic process can yield valuable results in terms of effectiveness, repeatability, final shape precision, higher formability and reduced spring-back. In this paper, the first results of EHF on copper prototypes and ongoing developments for niobium for the Superconducting Proton Linac studies at CERN are discussed. The simulations performed in order to master the embedded multi-physics phenomena and to steer process parameters are also presented.
Copyright/License	CC-BY-3.0

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