PAC2013 - List of Authors (Zeller, A.)

Paper	Title	Page
THPBA12	Progress on the MSU Superferric Cyclotron Gas Stopper Magnet Quench Protection and Cooling System	1253
	M.A. Green, G. Bollen, S. Chouhan, A. Zeller FRIB, East Lansing, Michigan, USA J. DeKamp, D. Lawton, C. Magsig, D.J. Morrissey, J. Ottarson, S. Schwarz NSCL, East Lansing, Michigan, USA
	Funding: The material in this paper is based on work supported in part by a grant from the National Science Foundation. The MSU grant number is PHY-0958726. The MSU gas cyclotron stopper system is designed to decelerate rare isotope ions from energies from a few MeV to energies in the 10 keV range. The ions are decelerated in low pressure helium gas in vertical cyclotron magnet. The magnet and the system for decelerating the ions is mounted on a high voltage platform. The cyclotron gas stopper magnet is a warm iron superconducting cyclotron sector dipole. The maximum field in the gap (0.18m) is 2.75 T. The outer diameter of magnet yoke is 3.8m, with a pole radius of 1.1 m and Br = 1.8 T m. The desired field shape is obtained by the pole profile. Each coil of the two halves is in a separate cryostat and connected in series through a warm electrical connection. The entire system is mounted on a high voltage platform, and will be cooled by six two-stage 4.2 K pulse tube coolers. The magnet coils and their cryostats have been fabricated. The iron poles have been machined and assembled. This paper presents the progress on the magnet system fabrication and assembly

FRYBA1	Progress towards the Facility for Rare Isotope Beams	1453
	J. Wei, N.K. Bultman, F. Casagrande, C. Compton, K.D. Davidson, J. DeKamp, B. Drewyor, K. Elliott, A. Facco, P.E. Gibson, T . Glasmacher, K. Holland, M.J. Johnson, S. Jones, D. Leitner, M. Leitner, G. Machicoane, F. Marti, D. Morris, J.A. Nolen, J.P. Ozelis, S. Peng, J. Popielarski, L. Popielarski, E. Pozdeyev, T. Russo, K. Saito, J.J. Savino, R.C. Webber, M. Williams, T. Xu, Y. Yamazaki, A. Zeller, Y. Zhang, Q. Zhao FRIB, East Lansing, USA D. Arenius, V. Ganni JLAB, Newport News, Virginia, USA A. Facco INFN/LNL, Legnaro (PD), Italy R.E. Laxdal TRIUMF, Canada's National Laboratory for Particle and Nuclear Physics, Vancouver, Canada J.A. Nolen ANL, Argonne, USA
	Funding: Work supported by the U.S. Department of Energy Office of Science under Cooperative Agreement DE-SC0000661 The Facility for Rare Isotope Beams (FRIB) is based on a continuous-wave superconducting heavy ion linac to accelerate all the stable isotopes to above 200 MeV/u with a beam power of up to 400 kW. At an average beam power approximately two-to-three orders-of-magnitude higher than those of operating heavy-ion facilities, FRIB stands at the power frontier of the accelerator family - the first time for heavy-ion accelerators. To realize this innovative performance, superconducting RF cavities are used starting at the very low energy of 500 keV/u, and beams with multiple charge states are accelerated simultaneously. Many technological challenges specific for this linac have been tackled by the FRIB team and collaborators. Furthermore, the distinct differences from the other types of linacs at the power front must be clearly understood to make the FRIB successful. This report summarizes the technical progress made in the past years to meet these challenges.

Paper

Title

Page

Progress on the MSU Superferric Cyclotron Gas Stopper Magnet Quench Protection and Cooling System

1253

M.A. Green, G. Bollen, S. Chouhan, A. Zeller
FRIB, East Lansing, Michigan, USA
J. DeKamp, D. Lawton, C. Magsig, D.J. Morrissey, J. Ottarson, S. Schwarz
NSCL, East Lansing, Michigan, USA

Funding: The material in this paper is based on work supported in part by a grant from the National Science Foundation. The MSU grant number is PHY-0958726.
The MSU gas cyclotron stopper system is designed to decelerate rare isotope ions from energies from a few MeV to energies in the 10 keV range. The ions are decelerated in low pressure helium gas in vertical cyclotron magnet. The magnet and the system for decelerating the ions is mounted on a high voltage platform. The cyclotron gas stopper magnet is a warm iron superconducting cyclotron sector dipole. The maximum field in the gap (0.18m) is 2.75 T. The outer diameter of magnet yoke is 3.8m, with a pole radius of 1.1 m and Br = 1.8 T m. The desired field shape is obtained by the pole profile. Each coil of the two halves is in a separate cryostat and connected in series through a warm electrical connection. The entire system is mounted on a high voltage platform, and will be cooled by six two-stage 4.2 K pulse tube coolers. The magnet coils and their cryostats have been fabricated. The iron poles have been machined and assembled. This paper presents the progress on the magnet system fabrication and assembly

FRYBA1

Progress towards the Facility for Rare Isotope Beams

1453

J. Wei, N.K. Bultman, F. Casagrande, C. Compton, K.D. Davidson, J. DeKamp, B. Drewyor, K. Elliott, A. Facco, P.E. Gibson, T . Glasmacher, K. Holland, M.J. Johnson, S. Jones, D. Leitner, M. Leitner, G. Machicoane, F. Marti, D. Morris, J.A. Nolen, J.P. Ozelis, S. Peng, J. Popielarski, L. Popielarski, E. Pozdeyev, T. Russo, K. Saito, J.J. Savino, R.C. Webber, M. Williams, T. Xu, Y. Yamazaki, A. Zeller, Y. Zhang, Q. Zhao
FRIB, East Lansing, USA
D. Arenius, V. Ganni
JLAB, Newport News, Virginia, USA
A. Facco
INFN/LNL, Legnaro (PD), Italy
R.E. Laxdal
TRIUMF, Canada's National Laboratory for Particle and Nuclear Physics, Vancouver, Canada
J.A. Nolen
ANL, Argonne, USA

Funding: Work supported by the U.S. Department of Energy Office of Science under Cooperative Agreement DE-SC0000661
The Facility for Rare Isotope Beams (FRIB) is based on a continuous-wave superconducting heavy ion linac to accelerate all the stable isotopes to above 200 MeV/u with a beam power of up to 400 kW. At an average beam power approximately two-to-three orders-of-magnitude higher than those of operating heavy-ion facilities, FRIB stands at the power frontier of the accelerator family - the first time for heavy-ion accelerators. To realize this innovative performance, superconducting RF cavities are used starting at the very low energy of 500 keV/u, and beams with multiple charge states are accelerated simultaneously. Many technological challenges specific for this linac have been tackled by the FRIB team and collaborators. Furthermore, the distinct differences from the other types of linacs at the power front must be clearly understood to make the FRIB successful. This report summarizes the technical progress made in the past years to meet these challenges.