Design, development and use of the spectrometer for investigating coherent THz radiation produced by micro-bunching instabilities at Diamond Light Source

Aiveen Finn, Pavel Karataev, Guenther Rehm

Research output: Contribution to journalArticle

1 Citation (Scopus)


Schottky barrier diodes (SBDs) are known for their low noise, ultra-fast response and excellent sensitivity. They are often implemented as detectors in the millimetre wavelength regime. Micro-bunch instabilities (MBI) have been detected at many light sources around the world including the Diamond Light Source, UK. These MBI can result in bursts of coherent synchrotron radiation (CSR) with millimetre wavelengths. More research needs to be carried out with regards to the dynamics of MBI in order to confirm the simulations and to eventually harness the power of the CSR bursts. A single shot spectrometer has been designed and is under operation at the Diamond Light Source (DLS). It is composed of eight SBDs ranging from 33-1000 GHz. Unlike previous measurements carried out, each of the SBDs has been individually characterised thus making the results obtained comparable to simulations. In this paper, we present the assessment of each SBD in the spectrometer and the first results of the spectrometer's use in the beam.

Original languageEnglish
Article number012039
JournalJournal of Physics: Conference Series
Issue number1
Publication statusPublished - 3 Aug 2016
Externally publishedYes
Event11th International Symposium on Radiation from Relativistic Electrons in Periodic Structures, RREPS 2015 - Saint Petersburg, Russian Federation
Duration: 6 Sep 201511 Sep 2015


ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this