Simultaneous acceleration of two kinds of ion beams in the RISP
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摘要
The Rare Isotope Science Project(RISP) is a research complex consisting of a heavy-ion accelerator,which contains a front-end system, a super-conducting linear accelerator, an isotope separator online(ISOL) system, and an in-flight system. The original purpose of the post-linear-accelerator(post-linac) section was to accelerate either a stable driver beam derived from an electron cyclotron resonance ion source, or an unstable rare-isotope beam from an ISOL system. The post-linac lattice has now been redesigned using a novel and improved acceleration concept that allows the simultaneous acceleration of both a stable driver beam and a radioisotope beam. To achieve this, the post-linac lattice is set for a mass-to-charge ratio(A/q) that is the average of the two beams. The performance of this simultaneous two-beam acceleration is here assessed using two ion beams:~(58) Ni~(8+) and ~(132)Sn~(20+). A beam dynamics simulation was performed using the TRACK and TraceWin codes. The resultant beam dynamics for the new RISP post-linac lattice design are examined. We also estimate the effects of machine errors and their correction on the post-linac lattice.
The Rare Isotope Science Project(RISP) is a research complex consisting of a heavy-ion accelerator,which contains a front-end system, a super-conducting linear accelerator, an isotope separator online(ISOL) system, and an in-flight system. The original purpose of the post-linear-accelerator(post-linac) section was to accelerate either a stable driver beam derived from an electron cyclotron resonance ion source, or an unstable rare-isotope beam from an ISOL system. The post-linac lattice has now been redesigned using a novel and improved acceleration concept that allows the simultaneous acceleration of both a stable driver beam and a radioisotope beam. To achieve this, the post-linac lattice is set for a mass-to-charge ratio(A/q) that is the average of the two beams. The performance of this simultaneous two-beam acceleration is here assessed using two ion beams:~(58) Ni~(8+) and ~(132)Sn~(20+). A beam dynamics simulation was performed using the TRACK and TraceWin codes. The resultant beam dynamics for the new RISP post-linac lattice design are examined. We also estimate the effects of machine errors and their correction on the post-linac lattice.
The Rare Isotope Science Project(RISP) is a research complex consisting of a heavy-ion accelerator,which contains a front-end system, a super-conducting linear accelerator, an isotope separator online(ISOL) system, and an in-flight system. The original purpose of the post-linear-accelerator(post-linac) section was to accelerate either a stable driver beam derived from an electron cyclotron resonance ion source, or an unstable rare-isotope beam from an ISOL system. The post-linac lattice has now been redesigned using a novel and improved acceleration concept that allows the simultaneous acceleration of both a stable driver beam and a radioisotope beam. To achieve this, the post-linac lattice is set for a mass-to-charge ratio(A/q) that is the average of the two beams. The performance of this simultaneous two-beam acceleration is here assessed using two ion beams:~(58) Ni~(8+) and ~(132)Sn~(20+). A beam dynamics simulation was performed using the TRACK and TraceWin codes. The resultant beam dynamics for the new RISP post-linac lattice design are examined. We also estimate the effects of machine errors and their correction on the post-linac lattice.
引文
1.RISP web site.http://risp.ibs.re.kr
2.E.-S.Kim,J.B.Bahng,J.-G.Hwang et al.,Start-to-end simulations for beam dynamics in the RISP heavy-ion accelerator.Nucl.Instrum.Methods A 794,215-223(2015).https://doi.org/10.1016/j.nima.2015.05.044
3.B.Mustapha,P.Ostroumov,A.Perry,et al.,Simultaneous acceleration of radioactive and stable beams in the ATLAS linac,THO1AB01,in Proceedings of HN2014,East-Lansing,MI,USA
4.D.-O.Jeon,Status of the RAON accelerator systems,in Proceedings of IPAC2013,Shanghai,China,THPWO062
5.P.N.Ostroumov,B.Mustapha,J.-P.Carneiro,Beam dynamics studies of the 8-GeV linac at FNAL,TH301,in Proceedings of LINAC08,Victoria,BC,Canada
6.P.N.Ostroumov,K.W.Shepard,Correction of beam-steering effects in low-velocity superconducting quarter-wave cavities.Phys.Rev.Spec.Top.Accel.Beams 4,110101(2001).
7.P.N.Ostroumov,B.Mustapha,V.N.Aseev,Beam dynamics studies of the 8-GeV Superconducting HˉLinac,TUP072,in Proceedings of LINAC 2006,Knoxville,TN,USA
8.P.N.Ostroumov,V.N.Aseev,B.Mustapha,Beam loss studies in high-intensity heavy-ion linacs.Phys.Rev.Spec.Top.Accel.Beams 7,090101(2004)
9.J.-P.Carneiro et al,Beam loss due to misalignments,RF jitter and mismatch in the Fermilab PROJECT-X 3 GEV CW Linac,FERMILAB-CONF-12-199-APC
2.E.-S.Kim,J.B.Bahng,J.-G.Hwang et al.,Start-to-end simulations for beam dynamics in the RISP heavy-ion accelerator.Nucl.Instrum.Methods A 794,215-223(2015).https://doi.org/10.1016/j.nima.2015.05.044
3.B.Mustapha,P.Ostroumov,A.Perry,et al.,Simultaneous acceleration of radioactive and stable beams in the ATLAS linac,THO1AB01,in Proceedings of HN2014,East-Lansing,MI,USA
4.D.-O.Jeon,Status of the RAON accelerator systems,in Proceedings of IPAC2013,Shanghai,China,THPWO062
5.P.N.Ostroumov,B.Mustapha,J.-P.Carneiro,Beam dynamics studies of the 8-GeV linac at FNAL,TH301,in Proceedings of LINAC08,Victoria,BC,Canada
6.P.N.Ostroumov,K.W.Shepard,Correction of beam-steering effects in low-velocity superconducting quarter-wave cavities.Phys.Rev.Spec.Top.Accel.Beams 4,110101(2001).
7.P.N.Ostroumov,B.Mustapha,V.N.Aseev,Beam dynamics studies of the 8-GeV Superconducting HˉLinac,TUP072,in Proceedings of LINAC 2006,Knoxville,TN,USA
8.P.N.Ostroumov,V.N.Aseev,B.Mustapha,Beam loss studies in high-intensity heavy-ion linacs.Phys.Rev.Spec.Top.Accel.Beams 7,090101(2004)
9.J.-P.Carneiro et al,Beam loss due to misalignments,RF jitter and mismatch in the Fermilab PROJECT-X 3 GEV CW Linac,FERMILAB-CONF-12-199-APC