HIAT2015 - List of Authors (Chung, M.)

Paper	Title	Page
WEPB30	Optical Design of the EBIS Charge Breeder System for RAON in Korea	265
	H.J. Son, J.-W. Kim, Y.H. Park IBS, Daejeon, Republic of Korea M. Chung UNIST, Ulsan, Republic of Korea
	In Korea, a heavy ion accelerator facility called RAON is being designed to produce various rare isotopes under the Rare Isotope Science Project. Electron beam ion source (EBIS) will be used for charge breeding of rare isotope beams in the ISOL system. The electron beam simulation has been performed from an E-gun cathode to a collector by using TRAK. The electron beam current is set to be 3A at the beam energy of 20kV, and the electron beam current density can reach up to 500 A/cm² by maximum magnetic field of about 6T. The breeding time of 132Sn³³⁺ is calculated to be 61ms under these electron beam condition. In case of 133Cs³³⁺, the breeding time is about 67ms. The ion beam simulation has been performed for both injection and extraction operation modes by using TRAK and SIMION. The ion transport design is based on these simulation results. In the other hand, an acceptance of EBIS system is estimated to be 52πmm·mrad assuming partial overlap with electron beams. If 100% of ion-electron overlap is assumed, the acceptance is 14πmm·mrad. In this work, we will also report simulation results on the charge breeding processes** in addition to electron and ion beam dynamics. * Jongwon Kim et al., Proc. of EBIST'14, AIP Conf. Proc. 1640, 38-43 (2015). http://www.fieldp.com/ * http://www.simion.com/ **** R. Becker et al., J. Phys.: Conf. Ser. 58 (2007) 443.
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Paper

Title

Page

Optical Design of the EBIS Charge Breeder System for RAON in Korea

265

H.J. Son, J.-W. Kim, Y.H. Park
IBS, Daejeon, Republic of Korea
M. Chung
UNIST, Ulsan, Republic of Korea

In Korea, a heavy ion accelerator facility called RAON is being designed to produce various rare isotopes under the Rare Isotope Science Project. Electron beam ion source (EBIS) will be used for charge breeding of rare isotope beams in the ISOL system*. The electron beam simulation has been performed from an E-gun cathode to a collector by using TRAK**. The electron beam current is set to be 3A at the beam energy of 20kV, and the electron beam current density can reach up to 500 A/cm² by maximum magnetic field of about 6T. The breeding time of 132Sn³³⁺ is calculated to be 61ms under these electron beam condition. In case of 133Cs³³⁺, the breeding time is about 67ms. The ion beam simulation has been performed for both injection and extraction operation modes by using TRAK and SIMION***. The ion transport design is based on these simulation results. In the other hand, an acceptance of EBIS system is estimated to be 52πmm·mrad assuming partial overlap with electron beams. If 100% of ion-electron overlap is assumed, the acceptance is 14πmm·mrad. In this work, we will also report simulation results on the charge breeding processes**** in addition to electron and ion beam dynamics.
* Jongwon Kim et al., Proc. of EBIST'14, AIP Conf. Proc. 1640, 38-43 (2015).
** http://www.fieldp.com/
*** http://www.simion.com/
**** R. Becker et al., J. Phys.: Conf. Ser. 58 (2007) 443.

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