Skip to Main content Skip to Navigation
Journal articles

Single crystal CVD diamond membranes as Position Sensitive X-ray Detector

K. Desjardins 1, * C. Menneglier 1 M. Pomorski 2 
* Corresponding author
2 LCD-LIST - Laboratoire Capteurs Diamant
DM2I - Département Métrologie Instrumentation & Information : DRT/LIST/DM2I
Abstract : Transparent X-ray Beam Position Monitor (XBPM) has been specifically developed for low energy X-ray beamlines (1.4 keV < E < 5 keV) allowing to transmit more than 80% of 2 keV energy beam. The detector is based on a free-standing single crystal CVD diamond membrane of 4 μm thickness with position-sensitive DLC (Diamond-Like Carbon) resistive electrodes in duo-lateral configuration. The measured X-ray beam induced current (XBIC) due to the interaction of X-rays with diamond membrane allows precise monitoring of the absolute beam flux and the beam position (by the reconstruction of its center-of-gravity) at beam transmissions reaching 95%. This detector has been installed at SOLEIL synchrotron on the SIRIUS beamline monochromator output and it has shown charge collection efficiency (CCE) reaching 100% with no lag-effects and excellent beam intensity sensitivity monitoring. X-ray beam mapping of the detector showed an XBIC response inhomogeneity of less than 10% across the membrane, corresponding mainly to the measured variation of the diamond plate thickness. The measured beam position resolution is at sub-micron level depending on the beam flux and the readout electronics bandwidth.
Complete list of metadata

Cited literature [7 references]  Display  Hide  Download
Contributor : Léna Le Roy Connect in order to contact the contributor
Submitted on : Monday, January 14, 2019 - 1:08:03 PM
Last modification on : Thursday, February 17, 2022 - 10:08:05 AM


Files produced by the author(s)



K. Desjardins, C. Menneglier, M. Pomorski. Single crystal CVD diamond membranes as Position Sensitive X-ray Detector. Journal of Instrumentation, IOP Publishing, 2017, 12, pp.C12046. ⟨10.1088/1748-0221/12/12/C12046⟩. ⟨cea-01830786⟩



Record views


Files downloads