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Non-Invasive Bunch Length Diagnostics for High Intensity Beams
Non-Invasive Bunch Length Diagnostics for High Intensity Beams
- Publication Year :
- 2018
- Publisher :
- JACoW Publishing, Geneva, Switzerland, 2018.
-
Abstract
- Modern particle accelerators utilize photoinjectors and compression schemes to produce short high peak current electron bunches for various applications like x-ray free electron lasers, high gradient beam driven acceleration and others. Bunch length detection is a desired diagnostics for such machines. In this paper we describe a non-invasive, real-time detector which can be retrofitted into an existing beamline and measure the bunch length in real time using interferometric methods. Diffraction radiation is the mechanism to be used to produce a measurable signal without intercepting the beam. This became possible as sensitivity of pyrodetectors improved over the years, while peak beam power grew. For high peak current beams there is a possibility of a single shot measurement. This can be done with a pair of closely placed vacuum breaks that create a spatial correlation of the generated signals which can be measured by a pyro-detector array or a THz camera. The bunch length is determined from the correlation data using an iterative beam profile recovery algorithm.<br />Proceedings of the 9th Int. Particle Accelerator Conf., IPAC2018, Vancouver, BC, Canada
Details
- Language :
- English
- Database :
- OpenAIRE
- Accession number :
- edsair.doi...........42ca6da79250e9574d08e3c64d4e22ae
- Full Text :
- https://doi.org/10.18429/jacow-ipac2018-wepaf060