SRF2011 - List of Authors (Bouly, F.B.)

Paper	Title	Page
MOPO021	Electromechanical Design of 704MHz β 0.65 SC Proton Cavity	110
	H. Gassot, F.B. Bouly, G. Olry, S. Rousselot IPN, Orsay, France
	Funding: European Coordination for Accelerator Research & Development (EuCARD) Within the framework of the EUCARD, IPN Orsay is in charge of design of a 704MHz elliptic superconducting cavity for β = 0.65 high intensity proton linac in pulsed mode. This study offers a new option to replace the injector of the Large Hadron Collider at CERN with SPL (Superconducting Proton Linac) project. For this cavity's design, a compromise between the requirements of high technological performances and the constraint of the cavity's cost should be found. As middle beta elliptical cavity has a big ratio between equator radian and iris radian, the mechanical deformations generate important Lorentz forces detuning. As a consequence, the cavity wall thickness should be increased and one or two stiffening rings between cells are necessary. The additional cost should be imperatively minimized since more than fifty β 0.65 cavities are considered for SPL linac. To do these optimizations, the electromechanical calculations are performed via our simulation platform, which drives and links CATIA for CAD, Cast3m for mechanics and Opera3d for RF. The final design of cavity is presented in this paper.

Paper

Title

Page

Electromechanical Design of 704MHz β 0.65 SC Proton Cavity

110

H. Gassot, F.B. Bouly, G. Olry, S. Rousselot
IPN, Orsay, France

Funding: European Coordination for Accelerator Research & Development (EuCARD)
Within the framework of the EUCARD, IPN Orsay is in charge of design of a 704MHz elliptic superconducting cavity for β = 0.65 high intensity proton linac in pulsed mode. This study offers a new option to replace the injector of the Large Hadron Collider at CERN with SPL (Superconducting Proton Linac) project. For this cavity's design, a compromise between the requirements of high technological performances and the constraint of the cavity's cost should be found. As middle beta elliptical cavity has a big ratio between equator radian and iris radian, the mechanical deformations generate important Lorentz forces detuning. As a consequence, the cavity wall thickness should be increased and one or two stiffening rings between cells are necessary. The additional cost should be imperatively minimized since more than fifty β 0.65 cavities are considered for SPL linac. To do these optimizations, the electromechanical calculations are performed via our simulation platform, which drives and links CATIA for CAD, Cast3m for mechanics and Opera3d for RF. The final design of cavity is presented in this paper.