E4 XANDY AX108
X-Ray Beam Position Monitoring System
with Feedback Control
with Feedback Control
XANDY is the data acquisition system, power controller and monitoring unit for the Diamond XBPM® detector. It is used at experimental beam lines of Synchrotron Light Sources to measure the beam position and intensity of the X-Ray beam. It provides and integrated PID controller and three DACs for analogue feedback to beam line elements. Switchable Electrometer Amplifiers are included for the 4 detector channels A,B,C,D.
For beam stabilisation, two DAC outputs give feedback from the integrated PID controller to beam line elements.
FEATURES
Type:
XBPM readout and feedback system
Input channels:
4
Integrated amplifier:
Electrometer Amplifier (10 pA ... 1 mA)
Sampling rate:
1 Hz - 1 MHz
Interface:
Browser-based GUI + API
ADDITIONAL PRODUCT INFORMATION

I/O connections are available on the rear side of XANDY. 4 input channels (A-D) are available, with each a switchable and remotely controlled amplifier.
The bias voltage for the XBPM® detector (0 - 50 V) is provided as well as 3 analogue outputs. DAC 1 and DAC 2 are used for feedback control of beam line elements (16-bit, ± 10 V @ 1 kHz), DAC 3 provides the measured beam intensity in real-time (16-bit, ± 2 V @ 10 MHz).
The data acquisition can be triggered with a TTL trigger via 'ExTrigg'.
The bias voltage for the XBPM® detector (0 - 50 V) is provided as well as 3 analogue outputs. DAC 1 and DAC 2 are used for feedback control of beam line elements (16-bit, ± 10 V @ 1 kHz), DAC 3 provides the measured beam intensity in real-time (16-bit, ± 2 V @ 10 MHz).
The data acquisition can be triggered with a TTL trigger via 'ExTrigg'.
XANDY is remotely controlled via LAN and can be operated via an API, which allows its integration in control system, such as EPICS and TANGO. The data download can be automated and streamlined for the monitoring of the beamline.
A web-based graphical user interface (GUI) is provided in addition, for the control and monitoring of XANDY. The data acquisition, amplifier settings, as well as the bias voltage output are set in the 'Settings' panel.
The actual measurement values are monitored in the 'Statistics' panel and displayed graphically for easy monitoring. Data is stored in HDF5 format and downloaded via the 'Download' button.
A web-based graphical user interface (GUI) is provided in addition, for the control and monitoring of XANDY. The data acquisition, amplifier settings, as well as the bias voltage output are set in the 'Settings' panel.
The actual measurement values are monitored in the 'Statistics' panel and displayed graphically for easy monitoring. Data is stored in HDF5 format and downloaded via the 'Download' button.


Low-noise transimpedance amplifiers are included to amplify the input signal from the Diamond XBPM® detector. The low input impedance of these amplifiers protects the 2 μm gap of the detector from over-voltages in the case of asymmetric beam loads.
The amplifiers are switchable, via the web-based GUI or the API, and cover input currents from 10 pA up to 1 mA. This allows to adjust to the beam intensity and energy at the given beam line. The graphics shows the example of a 20 μm XBPM® detector for different X-ray beams.
The amplifiers are switchable, via the web-based GUI or the API, and cover input currents from 10 pA up to 1 mA. This allows to adjust to the beam intensity and energy at the given beam line. The graphics shows the example of a 20 μm XBPM® detector for different X-ray beams.
DOWNLOAD THE PRODUCT INFORMATION
E4 XANDY AX108
RELEVANT PROJECTS
XBPM at Diamond Light Source Ltd.
The Diamond XBPM detector was developed in cooperation with the Diamond Light Source Ltd., Oxford/UK, with the goal to provide a precision instrument with high X-ray transmission. Several CIVIDEC Diamond XBPM are in use at experimental beam lines of DLS.
http://www.diamond.ac.ukXBPM at MAX IV Laboratory
The CIVIDEC Diamond nano-XBPM is used at the NanoMAX and BioMAX beam lines of the MAX IV Laboratory in Lund/Sweden. The XBPM detectors are used to monitor sub-μm X-ray beams of 5-30 keV energy with highest precision.
https://www.maxiv.lu.se/
RELEVANT PUBLICATIONS
Diamond XBPM® for feedback control of the X-ray beam position
J. Melbinger, T. Fragner, E. Griesmayer, S. Kalbfleisch, H. Frais-Kölbl, C. Weiss., J. Phys.: Conf. Ser. , 3010, 012075, 2025
DOI:10.1088/1742-6596/3010/1/012075
Impact Of Diffusion On The Ionisation Channel Of A Diamond XBPM Detector
C. Weiss, et al., Proceedings of the XRM Conference Taiwan, 2022
Applications of single-crystal CVD diamond XBPM detectors with nanometre x-ray beams
E. Griesmayer, P. Kavrigin, C. Weiss, and S. Kalbfleisch, AIP Conference Proceedings, 2054, 060052, 2019
DOI:10.1063/1.5084683
The Use of single-crystal CVD Diamond as a Position sensitive X-Ray Detector
E. Griesmayer, C. Bloomer, P. Kavrigin, C. Weiss, Proceedings of IBIC2016, Barcelona, Spain, MOPG14, 71-74, 2016
ISBN 978-3-95450-177-9