23-24 September 2020
Virtual Meeting via Zoom
Europe/Berlin timezone

LCLS-I undulator horizontal gradient modeling for THz@PITZ

24 Sep 2020, 10:35
5m
Virtual Meeting via Zoom

Virtual Meeting via Zoom

Speed talk Beam Dynamics

Speaker

Mikhail Krasilnikov (DESY Zeuthen)

Description

The Photo Injector Test Facility at DESY in Zeuthen (PITZ) develops a prototype of an accelerator based THz source for pump-probe experiments at the European XFEL. For the proof-of-principle experiments an LCLS-I undulator will be installed in a second PITZ tunnel downstream of the accelerator. Two LCLS-I undulators (on loan from SLAC) have arrived at Hamburg in August 2019. The fields of the undulator L143-112000-26 have been re-measured at DESY Hamburg and are consistent with SLAC measurement. A model for 3D field reconstruction based on the undulator magnetic measurements has been developed. This includes also a horizontal gradient of the vertical undulator field. Beam tracking has revealed that the transverse gradient will lead to an off-axis trajectory in the horizontal plane. This offset has to be corrected by steering coils which design is presented as well.

Primary author

Mikhail Krasilnikov (DESY Zeuthen)

Co-authors

Anusorn Lueangaramwong (DESY, Zeuthen) Markus Tischer (HASYLAB / DESY) Pavel Vagin (DESY, Hamburg) Dr Xiangkun LI (DESY Zeuthen)

Presentation Materials