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Performance of the Lancelot Beam Position Monitor at the Diamond Light Source

DOI: 10.1088/1748-0221/12/12/C12044 DOI Help

Authors: H. Chagani (Diamond Light Source) , T. B. Garcia-nathan (The University of Manchester) , C. Jiang (The University of Manchester) , A. Kachatkou (The University of Manchester) , J. Marchal (Diamond Light Source) , D. Omar (Diamond Light Source) , N. Tartoni (Diamond Light Source) , Roelof Van Silfhout (The University of Manchester; Dutch-Belgian Beamline (DUBBLE) at the ESRF) , S. Williams (Diamond Light Source)
Co-authored by industrial partner: No

Type: Conference Paper
Conference: 11th International Conference on Position Sensitive Detectors (PSD11)
Peer Reviewed: No

State: Published (Approved)
Published: December 2017

Abstract: The Lancelot beam position and profile monitor records the scattered radiation off a thin, low-density foil, which passes through a pinhole perpendicular to the path of the beam and is detected by a Medipix3RX sensor. This arrangement does not expose the detector to the direct beam at synchrotrons and results in a negligible drop in flux downstream of the module. It allows for magnified images of the beam to be acquired in real time with high signal-to-noise ratios, enabling measurements of tiny displacements in the position of the centroid of approximately 1 μm. It also provides a means for independently measuring the photon energy of the incident monoenergetic photon beam. A constant frame rate of up to 245 Hz is achieved. The results of measurements with two Lancelot detectors installed in different environments at the Diamond Light Source are presented and their performance is discussed.

Journal Keywords: Beam-line instrumentation (beam position and profile monitors; beam-intensity monitors; bunch length monitors; Image processing; X-ray detectors

Subject Areas: Technique Development


Technical Areas: Detectors

Added On: 08/01/2018 13:33

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