Design updates of the x-ray beam position monitor for beamline front ends.

Conference · Mon Jan 01 04:00:00 EST 2007

DOI:https://doi.org/10.1063/1.2436234· OSTI ID:967253

Shu, D; Singh, O; Hahne, M; Decker, G

At the Advanced Photon Source (APS), each insertion device (ID) beamline front end has two x-ray beam position monitors (XBPMs) to monitor the x-ray beam position in both the vertical and horizontal directions. The XBPMs measure photoelectrons generated from the CVD-diamond-based sensory blades and deduce the beam position by comparison of the relative signals from the blades. Using the method proposed by G. Decker, which involves the introduction of a chicane into the accelerator lattice that directs unwanted x-rays away from the photosensitive XBPM blades, the photon source stability has been improved by addition of XBPMs in the storage ring global orbit feedback. In recent years, design updates for the XBPM mechanical structure and geometric configuration have been made to improve its performance. We present these design updates in this paper. Test results of the XBPM design updates are also discussed here.

• Research Organization: Argonne National Laboratory (ANL)
• Sponsoring Organization: SC
• DOE Contract Number: AC02-06CH11357
• OSTI ID: 967253
• Report Number(s): ANL/AOD/CP-117934
• Country of Publication: United States
• Language: ENGLISH

Related Subjects

43 PARTICLE ACCELERATORS
ACCELERATORS
ADVANCED PHOTON SOURCE
BEAM POSITION
CONFIGURATION
DESIGN
FEEDBACK
MECHANICAL STRUCTURES
MONITORS
PERFORMANCE
PHOTONS
STABILITY
STORAGE RINGS
SYNCHROTRON RADIATION