论文信息 - Online Optimisation of the MAX IV 3 GeV Ring Dynamic Aperture

Online Optimisation of the MAX IV 3 GeV Ring Dynamic Aperture

In order to improve the resilience of the MAX IV 3 GeV ring's beam to a horizontal dipole kick while at the design tunes (42.20, 16.28) the optimisation algorithm RCDS (Robust Conjugate Direction Search) was deployed. The algorithm was able to increase the horizontal acceptance by finding new settings for the sextupole and octupole magnets, whilst leaving the vertical acceptance virtually unchanged. Additionally, the optimisation increased the momentum acceptance of the lattice, increasing beam lifetime.

D. Olsson

[1] Francis Cullinan,et al. Commissioning and first-year operational results of the MAX IV 3 GeV ring , 2018, Journal of synchrotron radiation.

[2] S. Leemann,et al. First optics and beam dynamics studies on the MAX IV 3 GeV storage ring , 2017 .

[3] Juhao Wu,et al. An algorithm for online optimization of accelerators , 2013 .

[4] Simon Leemann,et al. Injection with a single dipole kicker into the MAX IV storage rings , 2012 .

[5] E. Levichev,et al. Dynamic aperture study at the VEPP-4M storage ring , 1997, Proceedings of the 1997 Particle Accelerator Conference (Cat. No.97CH36167).

[6] S. Leemann. Updates to the MAX IV 3 GeV Storage Ring Lattice , 2012 .

[7] A. Stella. ANALYSIS OF THE DAΦNE BEAM POSITION MONITOR WITH A BOUNDARY ELEMENT METHOD , 2002 .

[8] Yukinori Kobayashi,et al. DIRECT OBSERVATION OF TRANSVERSE DYNAMIC APERTURE FOR HIGH-BRILLIANT OPTICS AT THE PHOTON FACTORY STORAGE RING , 2000 .