Title :
Accelerator modeling at SPEAR
Author :
Leblanc, G. ; Corbett, W.J.
Author_Institution :
MAX-Lab., Lund, Sweden
Abstract :
The response matrix, consisting of the closed orbit change at each beam position monitor (BPM) due to corrector magnet excitations, was measured and analyzed in order to calibrate a linear optics model of SPEAR. The model calibration was accomplished by varying model parameters to minimize the chi-square difference between the measured and the model response matrices. The singular value decomposition (SVD) matrix inversion method was used to solve the simultaneous equations. The calibrated model was then used to calculate corrections to the operational lattice. The results of the calibration and correction procedures are presented
Keywords :
electron accelerators; electron optics; matrix inversion; particle beam dynamics; singular value decomposition; storage rings; SPEAR; beam position monitor; calibration; chi-square difference; closed orbit change; correction procedures; corrector magnet excitations; linear optics model; model response matrices; operational lattice; response matrix; singular value decomposition matrix inversion method; Calibration; Dispersion; Energy measurement; Extraterrestrial measurements; Lattices; Matrix decomposition; Noise level; Noise measurement; Predictive models; Time measurement;
Conference_Titel :
Particle Accelerator Conference, 1997. Proceedings of the 1997
Conference_Location :
Vancouver, BC
Print_ISBN :
0-7803-4376-X
DOI :
10.1109/PAC.1997.749636
