Heavy-ion injector based on an electron cyclotron ion source for the superconducting linear accelerator of the Rare Isotope Science Project

2016 ◽  
Vol 87 (2) ◽  
pp. 02A728
Author(s):  
In-Seok Hong ◽  
Yong-Hwan Kim ◽  
Bong-Hyuk Choi ◽  
Suk-Jin Choi ◽  
Bum-Sik Park ◽  
...  
Keyword(s):  
Linear Accelerator ◽  
Heavy Ion ◽  
Ion Source ◽  
Electron Cyclotron ◽  
Rare Isotope ◽  
Science Project

Design for simultaneous acceleration of stable and unstable beams in a superconducting heavy-ion linear accelerator for RISP

2017 ◽  
Vol 32 (36) ◽  
pp. 1750203 ◽  
Author(s):  
Jongwon Kim ◽  
Hyock-Jun Son ◽  
Young-Ho Park
Keyword(s):  
Charge State ◽  
Linear Accelerator ◽  
Electron Cyclotron Resonance ◽  
Isotope Separation ◽  
Heavy Ion ◽  
Ion Source ◽  
Rare Isotope ◽  
Charge Breeding ◽  
Large Phase ◽  
A Charge

The post-accelerator of isotope separation on-line (ISOL) system for rare isotope science project (RISP) is a superconducting linear accelerator (SC-linac) with a DC equivalent voltage of around 160 MV. An isotope beam extracted from the ISOL is in a charge state of [Formula: see text] and its charge state is increased to [Formula: see text] by charge breeding with an electron beam ion source (EBIS). The charge breeding takes tens of ms and the pulse width of extracted beam from the EBIS is tens of [Formula: see text]s, which operates at up to 30 Hz. Consequently a large portion of radio frequency (rf) time of the post SC-linac is unused. The post-linac is equipped also with an electron cyclotron resonance (ECR) ion source for stable ion acceleration. Thanks to the large phase acceptance of SC-linac, it is possible to accelerate simultaneously both stable and radioisotope ions with a similar charge to mass ratio by sharing rf time. This operation scheme is implemented for RISP with the addition of an electric chopper and magnetic kickers. The facility will be capable of providing the users of the ISOL and in-flight fragmentation (IF) systems with different beams simultaneously, which would help nuclear science users in obtaining a beam time as high-precision measurements often need long hours.

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