Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10715851 | Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment | 2018 | 10 Pages |
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 195Â 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 1Â keV was achieved in 1Â h of data taking, while systematic uncertainties of 700Â keV were present in the experiment. These developments aim for a relative precision of 10â5 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.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Instrumentation
Authors
P. Klag, P. Achenbach, M. Biroth, T. Gogami, P. Herrmann, M. Kaneta, Y. Konishi, W. Lauth, S. Nagao, S.N. Nakamura, J. Pochodzalla, J. Roser, Y. Toyama,