Speaker
Description
Abstract: This article introduces the calibration process of the upgraded version HEPS-BPIX40 of the hybrid array pixel detector HEPS-BPIX designed for the China High Energy Synchrotron Radiation Source. The detector consists of 40 detection modules spliced together to form an approximately 6M pixel array, and has achieved a key improvement from measuring X-rays of one energy to measuring X-rays of two energies simultaneously. Based on the new measurement requirements, a dual-threshold scan was performed, the relationship between energy and threshold was quantified, and dual-threshold calibration was performed. For the threshold fine-tuning of dual thresholds, an accurate algorithm based on LDAC characteristics is introduced, and the mutual influence between dual thresholds and the differences between chips are studied. Under the precise algorithm, adjusting the difference between chips successfully reduced the dead pixel rate to 0.01%; while without adjusting the difference between chips, the dead pixel rate could only be reduced to 0.05%. Through this series of work, HEPS-BPIX40 has made significant progress in large-scale pixel count and dual threshold scale, providing new technologies and methods for cutting-edge research in the field of high-energy synchrotron radiation light source detection.
| Minioral | No |
|---|---|
| IEEE Member | No |
| Are you a student? | Yes |
