Longitudinal beam profile monitor for investigating the microbunching instability at Diamond Light Source

W. Shields, P. Karataev, R. Bartolini, A. Morgan, G. Rehm

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

An investigation into the microbunching instability at Diamond Light Source has recently been conducted. Beyond the instability threshold, the longitudinal distribution of the bunch starts filamenting. As a result, the bunch emits bursts of coherent synchrotron radiation with wavelengths shorter than the bunch length. The operating conditions for producing the instability include both standard optics, and low-alpha optics, where the bunch length can be shortened to a few picoseconds. A Michelson interferometer has been designed and installed utilising a silicon crystal wafer beamsplitter. Large bandwidth, room temperature pyroelectric detectors and low-noise, fast-response Schottky Barrier diode detectors have been employed to measure the interferograms. In this paper, we describe the observed results and calculated spectral content.

Original languageEnglish
Title of host publicationIBIC 2013
Subtitle of host publicationProceedings of the 2nd International Beam Instrumentation Conference
PublisherJoint Accelerator Conferences Website (JACoW)
Pages143-146
Number of pages4
ISBN (Electronic)9783954501274
Publication statusPublished - 1 Dec 2013
Externally publishedYes
Event2nd International Beam Instrumentation Conference, IBIC 2013 - Oxford, United Kingdom
Duration: 16 Sep 201319 Sep 2013

Conference

Conference2nd International Beam Instrumentation Conference, IBIC 2013
CountryUnited Kingdom
CityOxford
Period16.9.1319.9.13

ASJC Scopus subject areas

  • Instrumentation
  • Nuclear and High Energy Physics

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  • Cite this

    Shields, W., Karataev, P., Bartolini, R., Morgan, A., & Rehm, G. (2013). Longitudinal beam profile monitor for investigating the microbunching instability at Diamond Light Source. In IBIC 2013: Proceedings of the 2nd International Beam Instrumentation Conference (pp. 143-146). Joint Accelerator Conferences Website (JACoW).