Speaker
Description
Hybrid pixel detectors with silicon sensors are a well established technology for X-ray detection in the 5 keV – 20 keV range. With the commissioning of the JUNGFRAU (75 µm cell pitch) and of the first prototypes of the MÖNCH (25 µm cell pitch), the noise performance has been significantly improved, reaching the value of 55 e- ENC for JUNGFRAU and 36 e- ENC for MÖNCH, and therefore opening the soft X-ray range (below 1 keV) for hybrid pixel detector technology.
In the last years the prototypes underwent an exhaustive characterization and a series of tests have been conducted at various beam lines at Paul Scherrer Institut with energies ranging from 300 eV to 3 keV, to verify the compliance of the prototypes with the requirements of realistic soft X-ray experiments in a vacuum environment. The detector requirements for the experiments performed so far will be discussed, together with the technological challenges and the solutions adopted to make the prototypes vacuum-compatible. First results will be shown.
Finally, the plans for improvements and future prototypes commissioning will be discussed, including the commissioning of prototypes with thin entrance window sensors to increase the soft X-ray detection efficiency, or the possibility to employ Low Gain Avalanche Detectors (LGADs) to improve the signal to noise ratio.
| TRACK | Applications |
|---|
