Open AccessDiamond‐based semi‐transparent beam‐position monitor for synchrotron radiation applications
Author(s) -
Bergonzo P.,
Brambilla A.,
Tromson D.,
Marshall R. D.,
Jany C.,
Foulon F.,
Gauthier C.,
Solé V. A.,
Rogalev A.,
Goulon J.
Publication year - 1999
Publication title -
journal of synchrotron radiation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.172
H-Index - 99
ISSN - 1600-5775
DOI - 10.1107/s090904959801509x
Subject(s) - synchrotron radiation , synchrotron , optics , diamond , photon , beam (structure) , monochromatic color , physics , high energy x rays , attenuation , absorption (acoustics) , radiation , materials science , synchrotron radiation source , beamline , optoelectronics , composite material
A soft X‐ray beam‐position monitor based on a thin CVD diamond photodetector has been developed for use on third‐generation synchrotron radiation facilities, and has been tested on beamlines ID26 and ID12 at the European Synchrotron Radiation Facility. Since diamond exhibits a low absorption to low‐energy X‐ray photons, this device allows beam‐position monitoring with very little beam attenuation at photon energies as low as 2 keV. The devices presented here find their use essentially on low‐energy monochromatic beamlines with narrow beam sizes (typically below 1 mm 2 ). Measurements performed on a 20 µm‐thick device show that a position sensitivity of 2 µm can readily be achieved with a photon flux attenuation of 22% at 4 keV. This allows permanent in‐situ monitoring of beam instabilities during experiments.