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Synchronous Measurement of Stability of Electron Beam , X-Ray Beam , Ground and Cavity Voltage

Proceedings article published in 2011 by G. Rehm, M. G. Abbott, C. Bloomer, I. Uzun
This paper is available in a repository.
This paper is available in a repository.

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Postprint: policy unknown
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Abstract

We have developed hardware and software that allows continuous and synchronous recording of electron and X- ray beam position as well as cavity voltage and ground vibrations at a rate of about 10 kS/s for periods of many days. To this end, additional nodes have been added to our existing fast network that feeds the Fast Orbit Feedback System, namely tungsten vane type front end XBPMs, RF cavity pickups and accelerometers. The synchronous nature of these measurements shows the correlation be- tween electron beam motion through an insertion device and observed X-ray beam motion in the frontend or orbit distortions caused by fluctuations of the RF cavity voltage. While the additional channels currently are only observed, the potential of including these in the fast orbit feedback will be discussed.