Abstract
A 50 periods long hybrid permanent magnet undulator is being realized at Ansaldo Ricerche for the LISA FEL experiment of the INFN, Frascati, Italy [1]. An innovative design of the mechanical structure and an electronic control system have been developed in order to accurately position the jaws without requiring very tight mechanical tolerances in the manufacturing of the driving components. The mechanical design has been optimized by performing an accurate structural analysis with the ANSYS code. The control system checks the parallellism between the jaws during the gap variation and restores it automatically. Besides, it changes the current of the correction coils to minimize the dipole field integral at each gap. The security system to guarantee the safe operation of the device is also described.
| Original language | English |
|---|---|
| Title of host publication | Biodegradable Polymers for Industrial Applications |
| Editors | Ray Smith |
| Place of Publication | Cambridge, UK |
| Publisher | Woodhead Publishing Limited/CRC |
| Pages | 107-139 |
| ISBN (Print) | 978-1-85573-934-5 |
| DOIs | |
| Publication status | Published - 2005 |