Speaker
Description
The STFC Technology Department’s Detector Development Group have been developing detectors for X-ray photon science for over two decades. The group have developed a broad range of camera systems during this time that have included silicon-based imagers like the Large Pixel Detector (LPD) for the European XFEL [1] as well as hundreds of modules of our HEXITEC spectroscopic imaging detectors that make use of compound semiconductor materials like cadmium zinc telluride (CdZnTe) [2]. As photon light sources enter a new generation of diffraction-limited storage rings and MHz continuous repetition rate XFELs, the need for detector materials that can operate at higher photon fluxes and energies has never been greater.
This paper will present an overview of the groups work on the characterisation of different detector materials and their performance under these challenging conditions. This will include the most recent results from high-flux capable CdZnTe material produced by Redlen Technologies bonded to our next generation detector systems HEXITEC-MHz [3] and XIDYN [4] operating at photon fluxes in excess of 10$^{6}$ photons s$^{-1}$ mm$^{2}$. In addition, results will be shown from a new generation of perovskite radiation detector materials. The performance of melt grown CsPbBr$_{3}$ and solution grown FAPbBr$_{3}$ will be compared to that of CdZnTe under high flux synchrotron radiation.
REFERENCES
[1] M. C. Veale et al., Characterisation of the high dynamic range Large Pixel Detector (LPD) and its use at X-ray free electron laser sources, JINST 12 (2017) P12003 doi:10.1088/1748-0221/12/12/P12003
[2] M. C. Veale et al., HEXITEC: A High-Energy X-ray Spectroscopic Imaging Detector for Synchrotron Applications, Sync. Rad. News 31 (2018) 28 doi:10.1080/08940886.2018.1528431
[3] B. Cline et al., Characterisation of HEXITECMHz - A 1 MHz continuous frame rate spectroscopic X-ray imaging detector system, Nuc. Inst. Meth. A. 1057 (2023) 168718 doi:10.1016/j.nima.2023.168718
[4] S. Knowles et al., DynamiX: A prototype high-framerate, high-dynamic-range hard X-ray detector for 4th generation synchrotrons, iWoRID 2025 https://www.technology.stfc.ac.uk/Pages/News-Conferences-and-Publications/Conferences-Visits-and-Events/IWoRID-2025/DynamiX-iWorid25-Knowles.pdf