Author: D. Martin

Institution: ESRF

Co-Author: Laurent Farvacque

Mechanically Induced Influences On The ESRF SR Beam

Abstract:

We have conducted a number of experiments over the past year on the influence of mechanical motions on the ESRF SR Beam. High precision jacks installed under the SR girders are used to make movements while beam ( typically 5 mA) is in the machine. These movements are controlled by the HLS. All interesting beam parameters are measured before and after movements are made. Two families of beam effects have been looked at. The closed orbit is examined by pure vertical translation while the influence on the coupling is studied by introducing tilts on the girders. Although all of our experiments have been made in the vertical plane, the results can be equally applied in the horizontal plane. The results of our efforts to date will be presented here.