SRF2011 - List of Authors (Binkowski, J.)

Paper

Title

Page

Design Status of the SRF Linac Systems for the Facility for Rare Isotope Beams

56

M. Leitner, J. Bierwagen, J. Binkowski, S. Bricker, C. Compton, J.L. Crisp, L.J. Dubbs, K. Elliott, A. Facco, A. Fila, R. Fontus, A.D. Fox, P.E. Gibson, P. Guetschow, L.L. Harle, M. Hodek, J.P. Holzbauer, M.J. Johnson, S. Jones, T. Kole, B.R. Lang, D. Leitner, I.M. Malloch, F. Marti, D. R. Miller, S.J. Miller, T. Nellis, D. Norton, R. Oweiss, J. Popielarski, L. Popielarski, X. Rao, G.J. Velianoff, N. Verhanovitz, J. Wei, J. Weisend, M. Williams, K. Witgen, J. Wlodarczak, Y. Xu, Y. Zhang
FRIB, East Lansing, Michigan, USA

Funding: This material is based upon work supported by the U.S. Department of Energy Office of Science under Cooperative Agreement DE-SC0000661
The Facility for Rare Isotope Beams (FRIB) will utilize a powerful, superconducting heavy-ion driver linac to provide stable ion beams from protons to uranium, at energies of > 200 MeV/u at a beam power of up to 400 kW. ECR ion sources installed above ground will be used to provide highly charged ions, that will be transported into the linac tunnel approx. 10 m below ground. For the heaviest ions, two charge states will be accelerated to about 0.5 MeV/u using a room-temperature 80.5 MHz RFQ and injected into a superconducting cw linac, consisting of 112 quarter-wave (80.5 MHz) and 229 half-wavelength (322 MHz) cavities, installed inside 52 cryomodules operating at 2K. A single stripper section will be located at about 17 MeV/u (for uranium). Transverse focusing along the linac will be achieved by 9 T superconducting solenoids within the same cryostat as the superconducting rf accelerating structures. This paper describes the matured linac design, as the project is progressing towards a Department of Energy performance baseline definition in 2012. Development status of the linac subcomponents are presented with emphasis on the superconducting RF components.

Poster MOPO009 [2.495 MB]

MOPO045

Coupled Electromagnetic and Mechanical Simulations for Half-Wave Resonator Design

197

J.P. Holzbauer
NSCL, East Lansing, Michigan, USA
J. Binkowski, M.J. Johnson, S.J. Miller, J. Popielarski, Y. Xu
FRIB, East Lansing, Michigan, USA

Funding: This material is based upon work supported by the U.S. Department of Energy Office of Science under Cooperative Agreement DE-SC0000661
Mechanical design of two Half-Wave Resonators (HWRs) at 322 MHz with optimum β = v/c = 0.29 and 0.53 is underway at Michigan State University (MSU). These cavities are being designed for use in the Facility for Rare Isotope Beams (FRIB) driver linac. Part of this work has been the optimization of the mechanical properties to minimize Lorentz Force Detuning and helium bath pressure sensitivity while providing adequate tuning range. The simulation techniques used for this work and the resulting proposed cavity stiffening will be presented.

Poster MOPO045 [1.194 MB]

MOPO051

Design for Manufacture of a Superconducting Half Wave Resonator β=0.53

213

S.J. Miller, J. Binkowski, M.J. Johnson, Y. Xu
FRIB, East Lansing, Michigan, USA
A. Facco
INFN/LNL, Legnaro (PD), Italy

Funding: This material is based upon work supported by the U.S. Department of Energy Office of Science under Cooperative Agreement DE-SC0000661.
A medium velocity half wave resonator has been designed at the Facility for Rare Isotope Beams (FRIB) at Michigan State University (MSU) for use in a heavy ion linac. The cavity is designed to provide 3.7 MV of accelerating voltage at an optimum β = v/c = 0.53. The cavity was designed for manufacturing recommendations based on previous design as well as for stiffness, tunability, assembly, and cleaning. Finite Element Analysis simulations were performed for modal analysis, bath pressure sensitivity, Lorentz Force detuning, tuner stiffness, and tuning range. Industry prototyping is planned to confirm tolerances and fabrication processes. A tuner prototype has also been built. The helium vessel and power coupler have been designed and fabricated and will be adapted to the new cavity design.

Paper	Title	Page
MOPO009	Design Status of the SRF Linac Systems for the Facility for Rare Isotope Beams	56
	M. Leitner, J. Bierwagen, J. Binkowski, S. Bricker, C. Compton, J.L. Crisp, L.J. Dubbs, K. Elliott, A. Facco, A. Fila, R. Fontus, A.D. Fox, P.E. Gibson, P. Guetschow, L.L. Harle, M. Hodek, J.P. Holzbauer, M.J. Johnson, S. Jones, T. Kole, B.R. Lang, D. Leitner, I.M. Malloch, F. Marti, D. R. Miller, S.J. Miller, T. Nellis, D. Norton, R. Oweiss, J. Popielarski, L. Popielarski, X. Rao, G.J. Velianoff, N. Verhanovitz, J. Wei, J. Weisend, M. Williams, K. Witgen, J. Wlodarczak, Y. Xu, Y. Zhang FRIB, East Lansing, Michigan, USA
	Funding: This material is based upon work supported by the U.S. Department of Energy Office of Science under Cooperative Agreement DE-SC0000661 The Facility for Rare Isotope Beams (FRIB) will utilize a powerful, superconducting heavy-ion driver linac to provide stable ion beams from protons to uranium, at energies of > 200 MeV/u at a beam power of up to 400 kW. ECR ion sources installed above ground will be used to provide highly charged ions, that will be transported into the linac tunnel approx. 10 m below ground. For the heaviest ions, two charge states will be accelerated to about 0.5 MeV/u using a room-temperature 80.5 MHz RFQ and injected into a superconducting cw linac, consisting of 112 quarter-wave (80.5 MHz) and 229 half-wavelength (322 MHz) cavities, installed inside 52 cryomodules operating at 2K. A single stripper section will be located at about 17 MeV/u (for uranium). Transverse focusing along the linac will be achieved by 9 T superconducting solenoids within the same cryostat as the superconducting rf accelerating structures. This paper describes the matured linac design, as the project is progressing towards a Department of Energy performance baseline definition in 2012. Development status of the linac subcomponents are presented with emphasis on the superconducting RF components.
	Poster MOPO009 [2.495 MB]

MOPO045	Coupled Electromagnetic and Mechanical Simulations for Half-Wave Resonator Design	197
	J.P. Holzbauer NSCL, East Lansing, Michigan, USA J. Binkowski, M.J. Johnson, S.J. Miller, J. Popielarski, Y. Xu FRIB, East Lansing, Michigan, USA
	Funding: This material is based upon work supported by the U.S. Department of Energy Office of Science under Cooperative Agreement DE-SC0000661 Mechanical design of two Half-Wave Resonators (HWRs) at 322 MHz with optimum β = v/c = 0.29 and 0.53 is underway at Michigan State University (MSU). These cavities are being designed for use in the Facility for Rare Isotope Beams (FRIB) driver linac. Part of this work has been the optimization of the mechanical properties to minimize Lorentz Force Detuning and helium bath pressure sensitivity while providing adequate tuning range. The simulation techniques used for this work and the resulting proposed cavity stiffening will be presented.
	Poster MOPO045 [1.194 MB]

MOPO051	Design for Manufacture of a Superconducting Half Wave Resonator β=0.53	213
	S.J. Miller, J. Binkowski, M.J. Johnson, Y. Xu FRIB, East Lansing, Michigan, USA A. Facco INFN/LNL, Legnaro (PD), Italy
	Funding: This material is based upon work supported by the U.S. Department of Energy Office of Science under Cooperative Agreement DE-SC0000661. A medium velocity half wave resonator has been designed at the Facility for Rare Isotope Beams (FRIB) at Michigan State University (MSU) for use in a heavy ion linac. The cavity is designed to provide 3.7 MV of accelerating voltage at an optimum β = v/c = 0.53. The cavity was designed for manufacturing recommendations based on previous design as well as for stiffness, tunability, assembly, and cleaning. Finite Element Analysis simulations were performed for modal analysis, bath pressure sensitivity, Lorentz Force detuning, tuner stiffness, and tuning range. Industry prototyping is planned to confirm tolerances and fabrication processes. A tuner prototype has also been built. The helium vessel and power coupler have been designed and fabricated and will be adapted to the new cavity design.