DIPAC2011 - List of Authors (Wierzcholek, F.)

Paper	Title	Page
MOPD76	The Petra III Fast Orbit Feedback System	221
	J. Klute, K. Balewski, H.T. Duhme, H. Tiessen, F. Wierzcholek DESY, Hamburg, Germany
	Orbit stability is a crucial and import issue of 3rd generation light sources. Ambient mechanical and electrical noise cause rather large orbit distortions which have to be counteracted by an orbit feedback. Extensive studies of the orbit distortions in PETRA III have shown that the frequencies of the ambient noise lie within a frequency range from about 0.01Hz to 100Hz. In this paper we describe the main components, their properties and the layout of PETRA III’s orbit feedback. Furthermore experimental results on short and long term stability will be presented. It will be shown that the required orbit stability of ±0.5 μm in the vertical plane can be maintained over 50 h.

Paper

Title

Page

The Petra III Fast Orbit Feedback System

221

J. Klute, K. Balewski, H.T. Duhme, H. Tiessen, F. Wierzcholek
DESY, Hamburg, Germany

Orbit stability is a crucial and import issue of 3rd generation light sources. Ambient mechanical and electrical noise cause rather large orbit distortions which have to be counteracted by an orbit feedback. Extensive studies of the orbit distortions in PETRA III have shown that the frequencies of the ambient noise lie within a frequency range from about 0.01Hz to 100Hz. In this paper we describe the main components, their properties and the layout of PETRA III’s orbit feedback. Furthermore experimental results on short and long term stability will be presented. It will be shown that the required orbit stability of ±0.5 μm in the vertical plane can be maintained over 50 h.