Desenvolvimento de um método para definição de limites de posição e ângulo para o sistema de interlock de órbita do Sirius

Abstract

Orbit Interlock is a security system whose purpose is to guarantee that the light beam generated by insertion devices of synchrotron light sources does not damage the vacuum chambers and other components present in the particle accelerator storage rings. Although some synchrotrons already have systems like this, there are few works available about the development methods, in the case of 3rd generation synchrotron light sources, and especially 4th generation synchrotron light sources such as Sirius, which has narrow vacuum chambers and high power insertion devices. The present project aimed to develop a practical and reliable method to define safe limits of position and angle for high luminosity insertion devices that are under development, such as the EPU Delta 52 and IVU18, as well as others already installed. The employed method combines two approaches already used in other light sources around the world, using a routine developed in MATLAB to define the Active Interlock Envelope (AIE) through geometric relations, the Back Ray-tracing method, and a routine developed in POWERSHELL to run automated ray-tracing Monte Carlo Method simulations in SYNRADCLI software to check the obtained limits, and thermo-structural finite elements analysis simulations to guarantee the integrity of not considered robust chambers. At the end of the work, the method is applied for the short EPU Delta 52 and the IVU18 insertion devices. The application of the method results in the quick definition of the safe limits of both devices, in which the efficiency of the method and the safe envelopes are discussed, as well as possible improvements for it are pointed out.