Record Details

Title:
Automation of the Undulator Middle Plane Alignment Relative to the Electron Beam Position Using the K-Monochromator
Affiliation(s):
EuXFEL staff, Other
Author group:
Undulator Systems
X-Ray Photon Diagnostics
Topic:
Scientific area:
Abstract:
The correct K value of an undulator is an important parameter to achieve lasing conditions at free electron lasers. The accuracy of the installation of the undulator in the tunnel is limited by the accuracy of the instruments used in surveying. Moreover, the position of the electron beam also varies depending on its alignment. Another source of misalignment is ground movement and the resulting change in the position of the tunnel. All this can lead to misalignment of the electron beam position relative to the center of the undulator gap up to several hundred microns. That, in turn, will lead to a deviation of the ΔK/K parameter several times higher than the tolerance requirement. An automated method of aligning the middle plane of the undulator, using a K-monochromator, was developed and used at European XFEL. Details of the method are described in this article. The results of the K value measurements are discussed.
Imprint:
2019
conference Information:
Proceedings of ICALEPCS2019, MOPHA069 (2019)
Special issue name:
Feedback Control and Process Tuning
Related internal records:
Language(s):
English
Conference information:
New York, 2019-10-05, 2019-10-11


Export


 Record created 2019-12-19, last modified 2019-12-19

Fulltext:
Download fulltext
PDF

Rate this document:

Rate this document:
1
2
3
 
(Not yet reviewed)