Full text
| |
| Author(s): |
Matheus Melo Santos Velloso
Total Authors: 1
|
| Document type: | Master's Dissertation |
| Press: | Campinas, SP. |
| Institution: | Universidade Estadual de Campinas (UNICAMP). Instituto de Física Gleb Wataghin |
| Defense date: | 2024-05-05 |
| Examining board members: |
Liu Lin;
Abner de Siervo;
Tiago Fiorini da Silva
|
| Advisor: | Liu Lin; Antonio Rubens Britto de Castro |
| Abstract | |
Electron beam accumulation into SIRIUS storage ring occurs in a off-axis scheme, on which the efficiency depends on a sufficiently large dynamic aperture (DA): the region comprising stable transverse oscillations. Prior to optimization, SIRIUS DA was sufficiently large for providing good injection efficiency levels, but showed signs it could be further improved upon fine-tuning of sextupole magnet strengths, which determine the DA. In this master’s project, the Robust Conjugate Direction Search Algorithm (RCDS) for online optimization was applied to optimize the DA and the injection efficiency at SIRIUS. Online optimization was also carried out in different working points, with higher fractional tunes. Higher tunes are beneficial for orbit stability, but usually deteriorate the DA, requiring online optimization work to achieve injection efficiencies meeting operation demands. This work shows how online optimization was successful at optimizing the DA in SIRIUS nominal working point as well as in a new working point where orbit stability improvements were observed. The results highlight the effectiveness of this method in 4th-generation storage rings (AU) | |
| FAPESP's process: | 22/04162-4 - Study of nonlinear dynamics and optmization of Sirius' dynamic aperture |
| Grantee: | Matheus Melo Santos Velloso |
| Support Opportunities: | Scholarships in Brazil - Master |