Schmid, P.; Engel, D.; Feikes, J.; Ries, M.; Wüstefeld, G.: Mitigating the Pertubations Caused by U 180 at the Metrology Light Source. In: Proceedings of IPAC2011, 4 - 9 September 2011, San Sebastián, Spain., 2011. - ISBN 978-92-9083-366-6, p. 2930-2932
Abstract:
The Metrology Light Source is equipped with an electromagnetic undulator with a period length of 180 mm. User requests demand operation of this undulator in a wide energy range from 100MeV through 629MeV for user and dedicated low alpha modes. Mitigating the perturbations caused by the undulator to an acceptable level for all user requests, requires each quadrupole in the lattice to be powered individually. To what extend this recently implemented capability allows the restoration of the main properties of the machine optics for various settings of the undulator is presented in this document.