6533b828fe1ef96bd1287903
RESEARCH PRODUCT
Novel optical interferometry of synchrotron radiation for absolute electron beam energy measurements
Masashi KanetaJ. RoserP. KlagSatoshi NakamuraM. BirothY. ToyamaSho NagaoP. HerrmannYoshihiro KonishiJ. PochodzallaPatrick AchenbachW. LauthToshiyuki Gogamisubject
PhysicsNuclear and High Energy PhysicsPhysics - Instrumentation and DetectorsSpectrometer010308 nuclear & particles physicsbusiness.industrySynchrotron radiationFOS: Physical sciencesParticle acceleratorInstrumentation and Detectors (physics.ins-det)Undulator01 natural sciencesSynchrotronlaw.inventionOpticslaw0103 physical sciencesPhysics::Accelerator Physics010306 general physicsbusinessNuclear ExperimentInstrumentationMicrotronBeam (structure)Monochromatordescription
Abstract A novel interferometric method is presented for the measurement of the absolute energy of electron beams. In the year 2016, a pioneering experiment was performed using a 195 MeV beam of the Mainz Microtron (MAMI). The experimental setup consisted of two collinear magnetic undulators as sources of coherent optical synchrotron light and a high-resolving grating monochromator. Beam energy measurements required the variation of the relative undulator distance in the decimeter range and the analysis of the intensity oscillation length in the interference spectrum. A statistical precision of 1 keV was achieved in 1 h of data taking, while systematic uncertainties of 700 keV were present in the experiment. These developments aim for a relative precision of 1 0 − 5 in the absolute momentum calibrations of spectrometers and high-precision hypernuclear experiments. Other electron accelerators with beam energies in this regime such as the Mainz Energy Recovering Superconducting Accelerator (MESA) might benefit from this new method.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2018-09-19 |