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 …
Detection of faulty beam position monitors using unsupervised learning
Optics measurements at the LHC are mainly based on turn-by-turn signal from hundreds of
beam position monitors (BPMs). Faulty BPMs produce erroneous signal causing unreliable …
beam position monitors (BPMs). Faulty BPMs produce erroneous signal causing unreliable …
Record low beating in the LHC
R Tomás, T Bach, R Calaga, A Langner… - Physical Review Special …, 2012 - APS
The LHC is currently operating with a proton energy of 4 TeV and β* functions at the ATLAS
and CMS interaction points of 0.6 m. This is close to the design value at 7 TeV (β*= 0.55 m) …
and CMS interaction points of 0.6 m. This is close to the design value at 7 TeV (β*= 0.55 m) …
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 …
First -beating measurement and optics analysis for the CERN Large Hadron Collider
M Aiba, S Fartoukh, A Franchi, M Giovannozzi… - Physical Review Special …, 2009 - APS
Proton beams were successfully steered through the entire ring of the CERN Large Hadron
Collider (LHC) on September the 10th of 2008. A reasonable lifetime was achieved for the …
Collider (LHC) on September the 10th of 2008. A reasonable lifetime was achieved for the …
Direct amplitude detuning measurement with ac dipole
In circular machines, nonlinear dynamics can impact parameters such as beam lifetime and
could result in limitations on the performance reach of the accelerator. Assessing and …
could result in limitations on the performance reach of the accelerator. Assessing and …
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 …
Jacow: Application of machine learning to beam diagnostics
Abstract Machine learning (ML) techniques are widely used in science and industry as a
powerful tool for data analysis and automation. Currently, in accelerator physics ML is …
powerful tool for data analysis and automation. Currently, in accelerator physics ML is …