Beam-dynamics driven design of the LHeC energy-recovery linac
The LHeC is envisioned as a natural upgrade of the LHC that aims at delivering an electron beam for collisions with the existing hadronic beams. The current baseline design for the electron facility consists of a multipass superconducting energy-recovery linac (ERL) operating in a continuous wave mo...
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Series: | Physical Review Special Topics. Accelerators and Beams |
Online Access: | http://doi.org/10.1103/PhysRevSTAB.18.121004 |
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doaj-854be01867ab4e9588167e4b59cad4d42020-11-24T21:32:21ZengAmerican Physical SocietyPhysical Review Special Topics. Accelerators and Beams1098-44022015-12-01181212100410.1103/PhysRevSTAB.18.121004Beam-dynamics driven design of the LHeC energy-recovery linacDario PellegriniAndrea LatinaDaniel SchulteS. Alex BogaczThe LHeC is envisioned as a natural upgrade of the LHC that aims at delivering an electron beam for collisions with the existing hadronic beams. The current baseline design for the electron facility consists of a multipass superconducting energy-recovery linac (ERL) operating in a continuous wave mode. The unprecedently high energy of the multipass ERL combined with a stringent emittance dilution budget poses new challenges for the beam optics. Here, we investigate the performances of a novel arc architecture based on a flexible momentum compaction lattice that mitigates the effects of synchrotron radiation while containing the bunch lengthening. Extensive beam-dynamics investigations have been performed with placet2, a recently developed tracking code for recirculating machines. They include the first end-to-end tracking and a simulation of the machine operation with a continuous beam. This paper briefly describes the Conceptual Design Report lattice, with an emphasis on possible and proposed improvements that emerged from the beam-dynamics studies. The detector bypass section has been integrated in the lattice, and its design choices are presented here. The stable operation of the ERL with a current up to ∼150 mA in the linacs has been validated in the presence of single- and multibunch wakefields, synchrotron radiation, and beam-beam effects.http://doi.org/10.1103/PhysRevSTAB.18.121004 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Dario Pellegrini Andrea Latina Daniel Schulte S. Alex Bogacz |
spellingShingle |
Dario Pellegrini Andrea Latina Daniel Schulte S. Alex Bogacz Beam-dynamics driven design of the LHeC energy-recovery linac Physical Review Special Topics. Accelerators and Beams |
author_facet |
Dario Pellegrini Andrea Latina Daniel Schulte S. Alex Bogacz |
author_sort |
Dario Pellegrini |
title |
Beam-dynamics driven design of the LHeC energy-recovery linac |
title_short |
Beam-dynamics driven design of the LHeC energy-recovery linac |
title_full |
Beam-dynamics driven design of the LHeC energy-recovery linac |
title_fullStr |
Beam-dynamics driven design of the LHeC energy-recovery linac |
title_full_unstemmed |
Beam-dynamics driven design of the LHeC energy-recovery linac |
title_sort |
beam-dynamics driven design of the lhec energy-recovery linac |
publisher |
American Physical Society |
series |
Physical Review Special Topics. Accelerators and Beams |
issn |
1098-4402 |
publishDate |
2015-12-01 |
description |
The LHeC is envisioned as a natural upgrade of the LHC that aims at delivering an electron beam for collisions with the existing hadronic beams. The current baseline design for the electron facility consists of a multipass superconducting energy-recovery linac (ERL) operating in a continuous wave mode. The unprecedently high energy of the multipass ERL combined with a stringent emittance dilution budget poses new challenges for the beam optics. Here, we investigate the performances of a novel arc architecture based on a flexible momentum compaction lattice that mitigates the effects of synchrotron radiation while containing the bunch lengthening. Extensive beam-dynamics investigations have been performed with placet2, a recently developed tracking code for recirculating machines. They include the first end-to-end tracking and a simulation of the machine operation with a continuous beam. This paper briefly describes the Conceptual Design Report lattice, with an emphasis on possible and proposed improvements that emerged from the beam-dynamics studies. The detector bypass section has been integrated in the lattice, and its design choices are presented here. The stable operation of the ERL with a current up to ∼150 mA in the linacs has been validated in the presence of single- and multibunch wakefields, synchrotron radiation, and beam-beam effects. |
url |
http://doi.org/10.1103/PhysRevSTAB.18.121004 |
work_keys_str_mv |
AT dariopellegrini beamdynamicsdrivendesignofthelhecenergyrecoverylinac AT andrealatina beamdynamicsdrivendesignofthelhecenergyrecoverylinac AT danielschulte beamdynamicsdrivendesignofthelhecenergyrecoverylinac AT salexbogacz beamdynamicsdrivendesignofthelhecenergyrecoverylinac |
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