Review of linear optics measurement and correction for charged particle accelerators
Measurement and correction of charged particle beam optics have been a major concern
since the advent of strong focusing synchrotron accelerators. Traditionally, particle colliders …
since the advent of strong focusing synchrotron accelerators. Traditionally, particle colliders …
LHC optics commissioning: A journey towards 1% optics control
T Persson, F Carlier, JC De Portugal… - … Review Accelerators and …, 2017 - APS
Since 2015 the LHC has been operating at 6.5 TeV. In 2016 the β-functions at the interaction
points of ATLAS and CMS were squeezed to 0.4 m. This is below the design β*= 0.55 m at 7 …
points of ATLAS and CMS were squeezed to 0.4 m. This is below the design β*= 0.55 m at 7 …
Improved control of the betatron coupling in the Large Hadron Collider
The control of the betatron coupling is of importance for safe beam operation in the LHC. In
this article we show recent advancements in methods and algorithms to measure and …
this article we show recent advancements in methods and algorithms to measure and …
Optics measurement algorithms and error analysis for the proton energy frontier
A Langner, R Tomás - Physical Review Special Topics-Accelerators and …, 2015 - APS
Optics measurement algorithms have been improved in preparation for the commissioning
of the LHC at higher energy, ie, with an increased damage potential. Due to machine …
of the LHC at higher energy, ie, with an increased damage potential. Due to machine …
Measurement of nonlinear observables in the Large Hadron Collider using kicked beams
The nonlinear dynamics of a circular accelerator such as the Large Hadron Collider (LHC)
may significantly impact its performance. As the LHC progresses to more challenging …
may significantly impact its performance. As the LHC progresses to more challenging …
New approach to LHC optics commissioning for the nonlinear era
EH Maclean, R Tomás, FS Carlier, MS Camillocci… - … Review Accelerators and …, 2019 - APS
In 2017, optics commissioning strategy for low-β* operation of the CERN Large Hadron
Collider (LHC) underwent a major revision. This was prompted by a need to extend the …
Collider (LHC) underwent a major revision. This was prompted by a need to extend the …
Detailed review of the LHC optics commissioning for the nonlinear era
EH Maclean, A Wegscheider, PK Skowronski, L Malina… - 2019 - cds.cern.ch
In 2017, optics commissioning strategy for low-β∗ operation of the CERN Large Hadron
Collider (LHC) underwent a major revision. This was prompted by a need to extend the …
Collider (LHC) underwent a major revision. This was prompted by a need to extend the …
Rigid waist shift: A new method for local coupling corrections in the LHC interaction regions
Successful operation of large-scale particle accelerators depends on the precise correction
of magnet field or alignment errors present in the machine. In the Large Hadron Collider …
of magnet field or alignment errors present in the machine. In the Large Hadron Collider …
Optics measurements and correction challenges for the HL-LHC
FS Carlier, EH Maclean, LE Medina Medrano, L Malina… - 2017 - cds.cern.ch
Optics control in the HL-LHC will be challenged by a very small β* of 15 cm in the two main
experiments. HL-LHC physics fills will keep a constant luminosity during several hours via β …
experiments. HL-LHC physics fills will keep a constant luminosity during several hours via β …
Amplitude dependent closest tune approach
Recent observations in the LHC point to the existence of an amplitude dependent closest
tune approach. However this dynamical behavior and its underlying mechanism remain …
tune approach. However this dynamical behavior and its underlying mechanism remain …