Speaker
Description
During accelerator operation, quadrupole gradients can be different from the set values for a variety of reasons.
Precise knowledge of quadrupole gradient errors is desirable in order to improve the optics with respect to the model.
The measured orbit matrix response encodes the optics of the lattice and hence can be used for inverse modeling of quadrupole gradients. The thus derived parameter estimates are subject to measurement uncertainty of the
orbit response and hence a detailed study of the uncertainty propagation must be performed in order to build confidence in the thus derived results.
This contribution reports on the studies for the SIS18 synchrotron at GSI and investigates the feasibility of inverse modeling of quadrupole gradients.
