Speaker
Description
Space radiation poses a major threat during space missions. Linear energy transfer (LET) is widely used for quantitatively assessing the effects of space radiation. Space radiation is characterized by a heterogeneous composition of particle types, a broad energy spectrum, and temporal variability, making it difficult to achieve high-precision and large dynamic range real-time LET detection. In this paper，a prototype readout electronics system is proposed. The prototype system is designed for a LET spectrometer using a novel dynamic range extension method, achieving a large dynamic range and high measurement precision in real-time detection. This prototype system is developed for silicon telescopes composed of double-sided silicon strip detectors (DSSDs) of up to 3 layers. It contains 3 front-end electronics (FEE) modules, and 1 data acquisition module (DAM). Electrical tests show that the charge dynamic range is up to about 700 fC while the equivalent charge noise (ENC) of the prototype in high gain mode is less than 0.17 fC for all channels. The extended dynamic range is about 4000. To validate the LET measurement methodology, a neutron radiation field test was conducted at the China Institute of Atomic Energy. GEANT4-based simulations were performed to verify the correctness of the experimental results. The experimental results show good agreement with simulations.
| Minioral | Yes |
|---|---|
| IEEE Member | No |
| Are you a student? | Yes |