Closed orbit correction at synchrotrons for symmetric and near-symmetric lattices

@article{Mirza2019ClosedOC,
  title={Closed orbit correction at synchrotrons for symmetric and near-symmetric lattices},
  author={Sajjad Hussain Mirza and Rahul Kumar Singh and P Forck and Harald Klingbeil},
  journal={Physical Review Accelerators and Beams},
  year={2019}
}
This contribution compiles the benefits of lattice symmetry in the context of closed orbit correction. A symmetric arrangement of BPMs and correctors results in structured orbit response matrices of Circulant or block Circulant type. These forms of matrices provide favorable properties in terms of computational complexity, information compression and interpretation of mathematical vector spaces of BPMs and correctors. For broken symmetries, a nearest-Circulant approximation is introduced and… 

Symmetry Exploitation in Orbit Feedback Systems of Synchrotrons for Computational Efficiency

Structural symmetries in the storage ring of synchrotrons are intentionally created during the design phase of the magnetic lattices, but they are rarely considered in the design of control

Symmetry Exploitation in Orbit Feedback Systems of Synchrotron Storage Rings

Structural symmetries in the storage ring of synchrotrons are intentionally created during the design phase of the magnetic lattices, but they are not considered in the design of control algorithms

Performance of the closed orbit feedback systems with spatial model mismatch

Closed orbit feedback (COFB) systems used for the global orbit correction rely on the pseudo-inversion of the orbit response matrix (ORM). A mismatch between the model ORM used in the controller and

Noninvasively improving the orbit-response matrix while continuously correcting the orbit

Based on continuously recorded beam positions and corrector excitations from, for example, a closed-orbit feedback system we describe an algorithm that continuously updates an estimate of the orbit

References

SHOWING 1-10 OF 32 REFERENCES

Use of eigenvectors in understanding and correcting storage ring orbits

Dynamic closed orbit correction

  • Yao Cheng
  • Physics
    Proceedings of International Conference on Particle Accelerators
  • 1993
This paper discuss the high speed method of the orbit correction. The speed is affected by many time-constants such as vacuum chamber, magnet, position sensor, power supply controller, and beam

SIMULATION STUDY ON BEAM LOSS IN THE ALPHA BUCKET REGIME DURING SIS-100 PROTON OPERATION

Besides heavy ion operation, the heavy ion synchrotron SIS-100 will accelerate a single proton bunch of 2 10 13 particles up to the energy E = 29 GeV. For the present standard scenario, optics

Uncertainty Modelling of Response Matrix

Electron orbit feedback controllers are based on the inversion of the response matrix of the storage ring and as a result, mismatches between the accelerator model and the real machine can limit

Introduction to Beam Dynamics in High-Energy Electron Storage Rings

Electron storage rings play a crucial role in many areas of modern scientific research. Introduction to Beam Dynamics in High-Energy Electron Storage Rings describes the physics of particle behaviour

LHC ORBIT FEEDBACK TESTS AT THE SPS

The real-time orbit feedback system foreseen for the LHC will be an essential component for reliable and safe machine operation. A test setup including a number of beam position monitors equipped

Synchrotron electron beam control

This thesis develops techniques for the design and analysis of controllers to achieve sub-micron accuracy on the position of electron beams for the optimal performance of synchrotrons. The techniques

Beam stability in synchrotron light sources.

Numerous third-generation light sources are now in a mature phase of operation, and several new sources are under construction. Submicron beam stability is being achieved routinely at many of these