Speaker
Description
Concepts for reducing on-axis heat load become essential as photon flux increases in next-generation synchrotrons, especially in the soft X-ray regime. Therefore, APPLE “knot” undulators are promising insertion devices, as they divert most energy off-axis without compromising the polarization purity. The first two APPLE X knot undulators, 2 m long and with a period length of 36 mm, were designed and built at Paul Scherrer Institute (PSI) and installed into the newly upgraded Swiss Light Source (SLS2.0) electron storage ring.
This contribution discusses their commissioning process, from both machine and beamline perspectives. Additionally, the initial performance will be presented and compared to calculations, illustrating how effectively the radiation power is reduced on-axis in contrast to a regular periodic planar undulator. Finally, an outlook on future knot-type undulator projects at PSI will be provided.
| In which format do you inted to submit your paper? | LaTeX |
|---|