Low-Energy X-Ray Polarization Detector Detection Unit Prototype

Le résumé fourni par la source

The low-energy X-ray polarization detector (LPD) is a large-area and wide-field-of-view (FoV) X-ray polarimeter planned to be installed on the China Space Station. The LPD is designed to measure the polarization of gamma bursts and their early X-ray afterglows, facilitating studies of celestial bodies and radiation mechanisms at the centers of gamma bursts. The LPD consists of 15 detection units with identical structure and function. A detection unit prototype was developed, featuring six pixel detectors compactly placed on a bonding and front-end electronics (BFE) board with an effective detection area of$27.36~\rm cm^{2}$. Each pixel detector has 16 analog output channels, after which data are amplified, digitized, and transmitted via the board-to-board (BTB) connector to the data acquisition (DAQ) board for processing. The prototype also includes an internal high-voltage circuit with up to −4-kV voltages. The test results indicate that the detection unit prototype can simultaneously read data from 96 channels of pixel detectors with an equivalent charge noise of 49.49 e$^{-}$. It features comprehensive power management, offers configurable data compression, storage, and encoding, and meets all functional requirements of the detection unit.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.