41 citations · 202 across the 19 of their papers we have counts for
19 papers
Bayesian Optimization Algorithms for Accelerator Physics
Ryan Roussel, Auralee L. Edelen, Tobias Boltz +23
Accelerator physics relies on numerical algorithms to solve optimization problems in online accelerator control and tasks such as experimental design and model calibration in simul…
Advanced storage ring lattice options based on hybrid six-bend achromat for Stanford Synchrotron Radiation Lightsource upgrade
Pantaleo Raimondi, Xiaobiao Huang, Jaehyun Kim +2
Three storage ring lattices have been designed as options for a future upgrade of the Stanford synchrotron radiation lightsource (SSRL). The three options differ in circumference a…
Correction of storage ring optics with an improved closed-orbit modulation method
Xiaobiao Huang, Xi Yang
We improved a previously proposed method of using closed-orbit modulation for linear optics correction. Instead of fitting individual closed orbits, the improved method decomposes…
An optimization method to compensate accelerator performance drifts
Zhe Zhang, Minghao Song, Xiaobiao Huang
Accelerator performance often deteriorates with time during a long period of operation due to secular changes in the machine components or the surrounding environment. In many case…
Simultaneous beam based alignment measurement for multiple magnets
Xiaobiao Huang
We propose a method to simultaneously determine the magnetic centers of multiple quadrupoles in a transport line or a storage ring. The method finds the magnet centers by correctin…
Physics-informed Gaussian Process for Online Optimization of Particle Accelerators
Adi Hanuka, X. Huang, J. Shtalenkova +5
High-dimensional optimization is a critical challenge for operating large-scale scientific facilities. We apply a physics-informed Gaussian process (GP) optimizer to tune a complex…
Online tuning and light source control using a physics-informed Gaussian process Adi
A. Hanuka, J. Duris, J. Shtalenkova +4
Operating large-scale scientific facilities often requires fast tuning and robust control in a high dimensional space. In this paper we introduce a new physics-informed optimizatio…
Machine learning for design optimization of storage ring nonlinear dynamics
Faya Wang, Minghao Song, Auralee Edelen +1
A novel approach to expedite design optimization of nonlinear beam dynamics in storage rings is proposed and demonstrated in this study. At each iteration, a neural network surroga…
Multi-objective multi-generation Gaussian process optimizer for design optimization
Xiaobiao Huang, Minghao Song, Zhe Zhang
We present a multi-objective evolutionary optimization algorithm that uses Gaussian process (GP) regression-based models to select trial solutions in a multi-generation iterative p…
Numerical optimization of a low emittance lattice cell
Tong Zhang, Xiaobiao Huang
In the lattice designs for the next generation storage ring light sources, longitudinal gradient bending magnets and anti-bending magnets have been adopted. A logical question rais…
Simultaneous linear optics and coupling correction for storage rings with turn-by-turn beam position monitor data
Xi Yang, Xiaobiao Huang
We propose a method to simultaneously correct linear optics errors and linear coupling for storage rings using turn-by-turn (TbT) beam position monitor (BPM) data. The independent…
A practical approach to extract symplectic transfer maps numerically for arbitrary magnetic elements
Yongjun Li, Xiaobiao Huang
We introduce a practical approach to extract the symplectic transfer maps for arbitrary magnetic beam-line elements. Beam motion in particle accelerators depends on linear and nonl…
Coupled beam motion in a storage ring with crab cavities
Xiaobiao Huang
We studied the coupled beam motion in a storage ring between the transverse and longitudinal directions introduced by crab cavities. Analytic form of the linear decoupling transfor…
Feasibility study of online tuning of the luminosity in a circular collider with the robust conjugate direction search method
Hong-Fei Ji, Yi Jiao, Sheng Wang +4
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 p…
Online optimization of storage ring nonlinear beam dynamics
Xiaobiao Huang, James Safranek
We propose to optimize the nonlinear beam dynamics of existing and future storage rings with direct online optimization techniques. This approach may have crucial importance for th…
An ultimate storage ring lattice with vertical emittance generated by damping wigglers
Xiaobiao Huang
We discuss the approach of generating round beams for ultimate storage rings using vertical damping wigglers (with horizontal magnetic field). The vertical damping wigglers provide…
A Multi-length Bunches Design for Electron Storage Rings with Odd Buckets
Liangjing Zhu, Dao Xiang, Lin Wang +2
A scheme with two superconducting RF cavities (sc-cavities) is designed to upgrade electron storage rings with odd buckets into multi-length bunches. In this paper, Hefei Light Sou…
Accelerator-based Single-shot Ultrafast Transmission Electron Microscope with Picosecond Temporal Resolution and Nanometer Spatial Resolution
D. Xiang, F. Fu, J. Zhang +4
We present feasibility study of an accelerator-based ultrafast transmission electron microscope (u-TEM) capable of producing a full field image in a single-shot with simultaneous p…
Matrix formalism of synchrobetatron coupling
Xiaobiao Huang
In this paper we present a complete linear synchrobetatron coupling formalism by studying the transfer matrix which describes linear horizontal and longitudinal motions. With the t…