Transverse beam splitting made operational: Key features of the multiturn extraction at the CERN Proton Synchrotron

Following a successful commissioning period, the multiturn extraction (MTE) at the CERN Proton Synchrotron (PS) has been applied for the fixed-target physics programme at the Super Proton Synchrotron (SPS) since September 2015. This exceptional extraction technique was proposed to replace the long-s...

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Main Authors: A. Huschauer, A. Blas, J. Borburgh, S. Damjanovic, S. Gilardoni, M. Giovannozzi, M. Hourican, K. Kahle, G. Le Godec, O. Michels, G. Sterbini, C. Hernalsteens
Format: Article
Language:English
Published: American Physical Society 2017-06-01
Series:Physical Review Accelerators and Beams
Online Access:http://doi.org/10.1103/PhysRevAccelBeams.20.061001
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author A. Huschauer
A. Blas
J. Borburgh
S. Damjanovic
S. Gilardoni
M. Giovannozzi
M. Hourican
K. Kahle
G. Le Godec
O. Michels
G. Sterbini
C. Hernalsteens
author_facet A. Huschauer
A. Blas
J. Borburgh
S. Damjanovic
S. Gilardoni
M. Giovannozzi
M. Hourican
K. Kahle
G. Le Godec
O. Michels
G. Sterbini
C. Hernalsteens
author_sort A. Huschauer
collection DOAJ
description Following a successful commissioning period, the multiturn extraction (MTE) at the CERN Proton Synchrotron (PS) has been applied for the fixed-target physics programme at the Super Proton Synchrotron (SPS) since September 2015. This exceptional extraction technique was proposed to replace the long-serving continuous transfer (CT) extraction, which has the drawback of inducing high activation in the ring. MTE exploits the principles of nonlinear beam dynamics to perform loss-free beam splitting in the horizontal phase space. Over multiple turns, the resulting beamlets are then transferred to the downstream accelerator. The operational deployment of MTE was rendered possible by the full understanding and mitigation of different hardware limitations and by redesigning the extraction trajectories and nonlinear optics, which was required due to the installation of a dummy septum to reduce the activation of the magnetic extraction septum. This paper focuses on these key features including the use of the transverse damper and the septum shadowing, which allowed a transition from the MTE study to a mature operational extraction scheme.
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spelling doaj.art-90ea73dfac844990babe8db884f6e01e2022-12-21T23:24:23ZengAmerican Physical SocietyPhysical Review Accelerators and Beams2469-98882017-06-0120606100110.1103/PhysRevAccelBeams.20.061001Transverse beam splitting made operational: Key features of the multiturn extraction at the CERN Proton SynchrotronA. HuschauerA. BlasJ. BorburghS. DamjanovicS. GilardoniM. GiovannozziM. HouricanK. KahleG. Le GodecO. MichelsG. SterbiniC. HernalsteensFollowing a successful commissioning period, the multiturn extraction (MTE) at the CERN Proton Synchrotron (PS) has been applied for the fixed-target physics programme at the Super Proton Synchrotron (SPS) since September 2015. This exceptional extraction technique was proposed to replace the long-serving continuous transfer (CT) extraction, which has the drawback of inducing high activation in the ring. MTE exploits the principles of nonlinear beam dynamics to perform loss-free beam splitting in the horizontal phase space. Over multiple turns, the resulting beamlets are then transferred to the downstream accelerator. The operational deployment of MTE was rendered possible by the full understanding and mitigation of different hardware limitations and by redesigning the extraction trajectories and nonlinear optics, which was required due to the installation of a dummy septum to reduce the activation of the magnetic extraction septum. This paper focuses on these key features including the use of the transverse damper and the septum shadowing, which allowed a transition from the MTE study to a mature operational extraction scheme.http://doi.org/10.1103/PhysRevAccelBeams.20.061001
spellingShingle A. Huschauer
A. Blas
J. Borburgh
S. Damjanovic
S. Gilardoni
M. Giovannozzi
M. Hourican
K. Kahle
G. Le Godec
O. Michels
G. Sterbini
C. Hernalsteens
Transverse beam splitting made operational: Key features of the multiturn extraction at the CERN Proton Synchrotron
Physical Review Accelerators and Beams
title Transverse beam splitting made operational: Key features of the multiturn extraction at the CERN Proton Synchrotron
title_full Transverse beam splitting made operational: Key features of the multiturn extraction at the CERN Proton Synchrotron
title_fullStr Transverse beam splitting made operational: Key features of the multiturn extraction at the CERN Proton Synchrotron
title_full_unstemmed Transverse beam splitting made operational: Key features of the multiturn extraction at the CERN Proton Synchrotron
title_short Transverse beam splitting made operational: Key features of the multiturn extraction at the CERN Proton Synchrotron
title_sort transverse beam splitting made operational key features of the multiturn extraction at the cern proton synchrotron
url http://doi.org/10.1103/PhysRevAccelBeams.20.061001
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