SRF2011 - List of Authors (D'Elia, A.)

Paper

Title

Page

Mechanical Design Considerations for β=1 Cavities

650

O. Capatina, G. Arnau-Izquierdo, S. Atieh, I. Aviles Santillana, S. Calatroni, A. D'Elia, R. Garoby, T. Junginger, D. Maciocha, E. Montesinos, V. Parma, T. Renaglia, T. Tardy, N. Valverde Alonso, W. Weingarten
CERN, Geneva, Switzerland
S. Chel, G. Devanz, J. Plouin
CEA/DSM/IRFU, France

The Superconducting Proton Linac (SPL) is an R&D effort coordinated by CERN in partnership with other international laboratories, aimed at developing key technologies for the construction of a multi-megawatt proton linac based on state-of-the-art RF superconducting technology, which would serve as a driver for new physics facilities such as neutrinos and Radioactive Ion Beam (RIB). Amongst the main objectives of this R&D effort, is the development of 704 MHz bulk niobium β=1 elliptical cavities, operating at 2 K with a maximum accelerating field of 25 MV/m, and the testing of a string of cavities integrated in a machine-type cryomodule. The R&D program concerning the elliptical β=1 cavities fabricated from niobium sheets explores new mechanical design and new fabrication methods. The paper presents several opportunities for design optimization that were identified. A comparison between stainless steel helium vessel and titanium helium vessel including Nb to Ti transitions is addressed. Different mechanical design aspects, including cryogenic considerations, and fabrication aspects were analyzed and the results are discussed.

Slides THIOA06 [5.292 MB]

THIOB07

HIE-ISOLDE quarter wave Nb/Cu cavity

686

M. Pasini, S. Calatroni, O. Capatina, A. D'Elia, M.A. Fraser, M. Therasse
CERN, Geneva, Switzerland
M. Pasini
Instituut voor Kern- en Stralingsfysica, K. U. Leuven, Leuven, Belgium

The HIE-ISOLDE project aims at the energy boost of the radio active beams produced in the ISOLDE facility from 3 MeV/u up to 5.5 MeV/u in a first stage and 10 MeV/u as ultimate installation. The beam acceleration is mainly achieved by employing 20 Nb sputtered Quarter Wave Resonator at β = 0.1 for which an R&D program has started. RF and mechanical design as well as the latest results of the sputtering process are reported in this paper.

Slides THIOB07 [4.042 MB]

Paper	Title	Page
THIOA06	Mechanical Design Considerations for β=1 Cavities	650
	O. Capatina, G. Arnau-Izquierdo, S. Atieh, I. Aviles Santillana, S. Calatroni, A. D'Elia, R. Garoby, T. Junginger, D. Maciocha, E. Montesinos, V. Parma, T. Renaglia, T. Tardy, N. Valverde Alonso, W. Weingarten CERN, Geneva, Switzerland S. Chel, G. Devanz, J. Plouin CEA/DSM/IRFU, France
	The Superconducting Proton Linac (SPL) is an R&D effort coordinated by CERN in partnership with other international laboratories, aimed at developing key technologies for the construction of a multi-megawatt proton linac based on state-of-the-art RF superconducting technology, which would serve as a driver for new physics facilities such as neutrinos and Radioactive Ion Beam (RIB). Amongst the main objectives of this R&D effort, is the development of 704 MHz bulk niobium β=1 elliptical cavities, operating at 2 K with a maximum accelerating field of 25 MV/m, and the testing of a string of cavities integrated in a machine-type cryomodule. The R&D program concerning the elliptical β=1 cavities fabricated from niobium sheets explores new mechanical design and new fabrication methods. The paper presents several opportunities for design optimization that were identified. A comparison between stainless steel helium vessel and titanium helium vessel including Nb to Ti transitions is addressed. Different mechanical design aspects, including cryogenic considerations, and fabrication aspects were analyzed and the results are discussed.
	Slides THIOA06 [5.292 MB]

THIOB07	HIE-ISOLDE quarter wave Nb/Cu cavity	686
	M. Pasini, S. Calatroni, O. Capatina, A. D'Elia, M.A. Fraser, M. Therasse CERN, Geneva, Switzerland M. Pasini Instituut voor Kern- en Stralingsfysica, K. U. Leuven, Leuven, Belgium
	The HIE-ISOLDE project aims at the energy boost of the radio active beams produced in the ISOLDE facility from 3 MeV/u up to 5.5 MeV/u in a first stage and 10 MeV/u as ultimate installation. The beam acceleration is mainly achieved by employing 20 Nb sputtered Quarter Wave Resonator at β = 0.1 for which an R&D program has started. RF and mechanical design as well as the latest results of the sputtering process are reported in this paper.
	Slides THIOB07 [4.042 MB]