Feasibility study of online tuning of the luminosity in a circular collider with the robust conjugate direction search method
@article{Ji2015FeasibilitySO, title={Feasibility study of online tuning of the luminosity in a circular collider with the robust conjugate direction search method}, author={Hongfei Ji and Yi Jiao and Sheng Wang and Daheng Ji and Chenghui Yu and Yuan Zhang and Xiao-Biao Huang}, journal={arXiv: Accelerator Physics}, year={2015} }
The robust conjugate direction search (RCDS) method has high tolerance to noise in beam experiments. It has been demonstrated that this method can be used to optimize the machine performance of a light source online. In our study, taking BEPCII as an example, the feasibility of online tuning of the luminosity in a circular collider is explored, through numerical simulation and preliminary online experiments. It is shown that the luminosity that is artificially decreased by a deviation of beam…
2 Citations
Automatic Tuning and Control for Advanced Light Sources
- Physics
- 2018
The next generation of X-ray Free Electron Laser (FEL) advanced light sources allow users to drastically change beam properties for various experiments. The main advantage of FELs over synchrotron…
Robust simplex algorithm for online optimization
- Computer SciencePhysical Review Accelerators and Beams
- 2018
The new optimization algorithm was modified from the popular Nelder-Mead simplex method to make it noise aware and noise resistant and showed that the algorithm is robust for optimization problems with complex functional dependence, high cross-coupling between parameters, and high noise.
References
SHOWING 1-8 OF 8 REFERENCES
Luminosity monitoring and calibration of BLM
- Physics
- 2011
The BEPC II Luminosity Monitor (BLM) monitors relative luminosity per bunch. The counting rates of gamma photons, which are proportional to the luminosities from the BLM at the center of mass system…
Model-independent particle accelerator tuning
- Computer Science
- 2013
A new model-independent dynamic feedback technique, rotation rate tuning, for automati-cally and simultaneously tuning coupled components of uncertain, complex systems that may be useful as a real-time, in-hardware, feedback-based optimization scheme for uncertain and time-varying systems.
Accelerator toolbox for MATLAB
- Physics
- 2001
This paper introduces Accelerator Toolbox (AT)--a collection of tools to model particle accelerators and beam transport lines in the MATLAB environment. At SSRL, it has become the modeling code of…
A Simplex Method for Function Minimization
- MathematicsComput. J.
- 1965
A method is described for the minimization of a function of n variables, which depends on the comparison of function values at the (n 41) vertices of a general simplex, followed by the replacement of…
Accelerator design
- Computer ScienceProceedings of the 1999 Particle Accelerator Conference (Cat. No.99CH36366)
- 1999
Object oriented programming techniques make it possible for accelerator designers to independently develop C++ software components that can work together, and some of the software components being developed at Tech-X Corporation are discussed.