Gratus, Jonathan and Edmonds, Chris and Hock, Kai and Machida, Shinji and Muratori, Bruno and Torromé, Ricardo Gallego and wolski, Andy (2014) Reconstruction of lattice parameters and beam momentum distribution from turn-by-turn beam position monitor readings in circular accelerators. Physical Review Special Topics: Accelerators and Beams, 17 (5): 054401. ISSN 1098-4402
PhysRevSTAB.17.054401.pdf - Published Version
Available under License Creative Commons Attribution.
Download (1MB)
Abstract
In high chromaticity circular accelerators, rapid decoherence of the betatron motion of a particle beam can make the measurement of lattice and bunch values, such as Courant-Snyder parameters and betatron amplitude, difficult. A method for reconstructing the momentum distribution of a beam from beam position measurements is presented. Further analysis of the same beam position monitor data allows estimates to be made of the Courant-Snyder parameters and the amplitude of coherent betatron oscillation of the beam. The methods are tested through application to data taken on the linear nonscaling fixed field alternating gradient accelerator, EMMA.