The development and calibration of a measurement system designed for assessing the performance of the avalanche photodiodes (APDs) used in the Compton scattering polarimeter of the CUSP project is discussed in this work. The designed system is able to characterize the APD gain (Formula presented.) and energy resolution across a wide range of temperatures T (from −20 °C to +60 °C) and bias voltages (Formula presented.) (from 260 V to 410 V). The primary goal was to experimentally determine the (Formula presented.) dependence on the T and (Formula presented.) in order to establish a strategy for stabilizing (Formula presented.) by compensating for T fluctuations, acting on (Formula presented.). The results demonstrate the system capability to accurately characterize APD behavior and develop feedback mechanisms to ensure its stable operation. This work provides a robust framework for calibrating APDs for space environments. It is essential for the successful implementation of spaceborne polarimeters such as the Compton scattering polarimeter foreseen aboard the CUbeSat Solar Polarimeter (CUSP) mission under development to perform solar flare X-ray polarimetry.
Alimenti, A., Cologgi, F., Fabiani, S., Torokhtii, K., Silva, E., Del Monte, E., et al. (2024). Design and Test of a Calibration System for Avalanche Photodiodes Used in X-Ray Compton Polarimeters for Space. SENSORS, 24(24), 8016 [10.3390/s24248016].
Design and Test of a Calibration System for Avalanche Photodiodes Used in X-Ray Compton Polarimeters for Space
Alimenti A.
;Torokhtii K.;Silva E.
;
2024-01-01
Abstract
The development and calibration of a measurement system designed for assessing the performance of the avalanche photodiodes (APDs) used in the Compton scattering polarimeter of the CUSP project is discussed in this work. The designed system is able to characterize the APD gain (Formula presented.) and energy resolution across a wide range of temperatures T (from −20 °C to +60 °C) and bias voltages (Formula presented.) (from 260 V to 410 V). The primary goal was to experimentally determine the (Formula presented.) dependence on the T and (Formula presented.) in order to establish a strategy for stabilizing (Formula presented.) by compensating for T fluctuations, acting on (Formula presented.). The results demonstrate the system capability to accurately characterize APD behavior and develop feedback mechanisms to ensure its stable operation. This work provides a robust framework for calibrating APDs for space environments. It is essential for the successful implementation of spaceborne polarimeters such as the Compton scattering polarimeter foreseen aboard the CUbeSat Solar Polarimeter (CUSP) mission under development to perform solar flare X-ray polarimetry.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
