Machine Protection
DOI:
https://doi.org/10.23730/CYRSP-2018-001.613Keywords:
Machine protection, linear accelerators, free-electron lasers, energy recovery linacs, radiation-induced demagnetization.Abstract
Conventional linacs used for modern free-electron lasers carry electron beams of unprecedented brightness with average powers ranging from a few watts to hundreds of kilowatts. Energy recovery linacs are already operated as radiation sources with nominal electron beam powers beyond 1 MW, and this figure can only be expected to increase in the future. This lecture discusses the scope of machine protection for these accelerators, reviews the parameters of existing and planned facilities, and gives an overview of typical hazards and damage scenarios. A brief introduction to the interaction of electron beams with matter is given, including a simple model for estimating some properties of electromagnetic cascades. A special problem common to most light sources—the field loss of permanent magnet undulators and its consequences for the emission of radiation—is discussed in the final section.
Downloads
Published
Issue
Section
License
Authors who publish with this publication agree to the following terms:
- CERN retains copyright and publishes the work licensed under the Creative Commons Attribution License 4.0 that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this series.
- Authors are able to enter into separate, additional contractual arrangements for distribution of the published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this series.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
