CYCLOTRONS 2010 - List of Authors (Lyneis, C.M.)

Paper

Title

Page

Status of the LBNL 88-Inch Cyclotron High-Voltage Injection Upgrade Project

45

K. Yoshiki Franzen, P.W. Casey, A. Hodgkinson, M. Kireeff Covo, D. Leitner, C.M. Lyneis, L. Phair, P. Pipersky
LBNL, Berkeley, California, USA

The goal of the project includes design of a new center region that allows external beam injection at injection voltages between 20 and 30 kV for high intensity beams. This new center region will make use of a spiral inflector to eliminate the use of a gridded mirror for high intensity beams. At the same time the mechanical design of the new center region must be flexible enough to allow use of the current center region for less intense beams. The use of two or more different center regions is necessary to cover the wide range of operation parameter space utilized by the 88-Inch Cyclotron Nuclear Science and Applied research program. The project also includes HV upgrades of the external injection lines and HV insulation of the AECR and VENUS source with the goal to provide focusing for beams up to 25 kV or if feasible up to 30 kV. The current spiral inflector design is based on extensive 3D FEM simulations which results will be presented. In addition results from ongoing efforts to improve on the transport efficiency from the AECR ion source to the current mirror inflector will be discussed.

Slides MOA2CCO03 [1.359 MB]

WEM1CIO01

4th Generation ECRIS and Applications to Cyclotrons

C.M. Lyneis, P. Ferracin, D. Leitner, S. Prestemon, G.L. Sabbi, D.S. Todd
LBNL, Berkeley, California, USA

Funding: Work was supported by the Director, Office of Energy Research, Office of High Energy and Nuclear Physics, Nuclear Physics Division of the U.S. Department of Energy under Contract DE AC03-76SF00098
Progress made on high field Nb3Sn magnets for particle accelerators makes possible the development of 4th Generation ECR ion sources capable of operating at a frequency between 40 and 60 GHz with axial magnetic fields up to 8 T. A number of 3rd Generation sources are in operation or development and these sources use NbTi superconducting wire for the magnets, have solenoid fields up to 4 T and operate up to 28 GHz. Based on scaling arguments, the beam intensities for ECR ion sources increase as the square of the operating frequency and going beyond 28 GHz holds great promise for increasing the beam power of driver accelerators used in radioactive beam accelerators such as RIBF in RIKEN, FRIB in Michigan State University and FAIR at GSI. At LBNL, the concepts for the magnet structure using Nb3Sn have been developed and analyzed including methods to assemble and clamp the coils. This is new technology and a research and development phase focused on magnet construction would be the next step towards realizing a 4th Generation ECR ion source.

Slides WEM1CIO01 [2.551 MB]

Paper	Title	Page
MOA2CCO03	Status of the LBNL 88-Inch Cyclotron High-Voltage Injection Upgrade Project	45
	K. Yoshiki Franzen, P.W. Casey, A. Hodgkinson, M. Kireeff Covo, D. Leitner, C.M. Lyneis, L. Phair, P. Pipersky LBNL, Berkeley, California, USA
	The goal of the project includes design of a new center region that allows external beam injection at injection voltages between 20 and 30 kV for high intensity beams. This new center region will make use of a spiral inflector to eliminate the use of a gridded mirror for high intensity beams. At the same time the mechanical design of the new center region must be flexible enough to allow use of the current center region for less intense beams. The use of two or more different center regions is necessary to cover the wide range of operation parameter space utilized by the 88-Inch Cyclotron Nuclear Science and Applied research program. The project also includes HV upgrades of the external injection lines and HV insulation of the AECR and VENUS source with the goal to provide focusing for beams up to 25 kV or if feasible up to 30 kV. The current spiral inflector design is based on extensive 3D FEM simulations which results will be presented. In addition results from ongoing efforts to improve on the transport efficiency from the AECR ion source to the current mirror inflector will be discussed.
	Slides MOA2CCO03 [1.359 MB]

WEM1CIO01	4th Generation ECRIS and Applications to Cyclotrons
	C.M. Lyneis, P. Ferracin, D. Leitner, S. Prestemon, G.L. Sabbi, D.S. Todd LBNL, Berkeley, California, USA
	Funding: Work was supported by the Director, Office of Energy Research, Office of High Energy and Nuclear Physics, Nuclear Physics Division of the U.S. Department of Energy under Contract DE AC03-76SF00098 Progress made on high field Nb3Sn magnets for particle accelerators makes possible the development of 4th Generation ECR ion sources capable of operating at a frequency between 40 and 60 GHz with axial magnetic fields up to 8 T. A number of 3rd Generation sources are in operation or development and these sources use NbTi superconducting wire for the magnets, have solenoid fields up to 4 T and operate up to 28 GHz. Based on scaling arguments, the beam intensities for ECR ion sources increase as the square of the operating frequency and going beyond 28 GHz holds great promise for increasing the beam power of driver accelerators used in radioactive beam accelerators such as RIBF in RIKEN, FRIB in Michigan State University and FAIR at GSI. At LBNL, the concepts for the magnet structure using Nb3Sn have been developed and analyzed including methods to assemble and clamp the coils. This is new technology and a research and development phase focused on magnet construction would be the next step towards realizing a 4th Generation ECR ion source.
	Slides WEM1CIO01 [2.551 MB]