Cyclotrons2013 - List of Authors (Yoshiki Franzen, K.)

Paper	Title	Page
TUPPT015	A Center Region Upgrade of the LBNL 88-Inch Cyclotron	186
	K. Yoshiki Franzen, J.Y. Benitez, M.K. Covo, A. Hodgkinson, C.M. Lyneis, B. Ninemire, L. Phair, P. Pipersky, M.M. Strohmeier, D.S. Todd LBNL, Berkeley, California, USA D. Leitner NSCL, East Lansing, Michigan, USA
	This paper describes the design and results of an upgraded cyclotron center region in which a mirror field type inflector was replaced by a spiral inflector. The main goals of the design were a) to facilitate injection at higher energies in order to improve transmission efficiency and b) to reduce down-time due to the need of replacing mirror inflector wires which rapidly break when exposed to high beam currents. The design was based on a detailed model of the spiral inflector and matching center region electrodes using AMaze, a 3D finite element suite of codes. Tests showed promising results indicating that the 88-Inch cyclotron will be able to provide a 2.0 pμA beam of 250 MeV 48Ca ions.

Paper

Title

Page

A Center Region Upgrade of the LBNL 88-Inch Cyclotron

186

K. Yoshiki Franzen, J.Y. Benitez, M.K. Covo, A. Hodgkinson, C.M. Lyneis, B. Ninemire, L. Phair, P. Pipersky, M.M. Strohmeier, D.S. Todd
LBNL, Berkeley, California, USA
D. Leitner
NSCL, East Lansing, Michigan, USA

This paper describes the design and results of an upgraded cyclotron center region in which a mirror field type inflector was replaced by a spiral inflector. The main goals of the design were a) to facilitate injection at higher energies in order to improve transmission efficiency and b) to reduce down-time due to the need of replacing mirror inflector wires which rapidly break when exposed to high beam currents. The design was based on a detailed model of the spiral inflector and matching center region electrodes using AMaze, a 3D finite element suite of codes. Tests showed promising results indicating that the 88-Inch cyclotron will be able to provide a 2.0 pμA beam of 250 MeV 48Ca ions.