Speaker
Description
We present SpacepiX Radiation Monitor (SXRM), a novel 5-layer telescopic pixel detector with interleaved absorber layers based on new SpacePix2 ASIC. The SXRM is a low-power (<500mW average power consumption) compact radiation monitor designed for charged particle species and energy determination. It is designed for detection and identification of protons, electrons and heavy ions and it can provide basic functionality of a housekeeping radiation monitor with alert functionality capable of monitoring the space radiation environment. In addition, the SXRM supports operational modes of frame imaging, hit cluster reconstruction, particle track reconstruction and proton, e - and ion energy histogramming.
The SpacePix2 ASIC is a monolithic pixel detector manufactured in a 180 nm SoI technology with 30 micron deep sensitive region in the handling wafer and backside pulse digitization capability.
The ASIC contains a matrix of 64x64 pixels with a 60 micron pixel pitch. The dynamic range of the SpacePix2 ASIC was designed to be 2 ke- to 60 ke- in the pixel front-end and 300 ke- to 30 Me- in the sensor backside layer. Digitization of the signal is performed using fast 10-bit differential column ADCs. The manufacturing technology has been characterized for TID effects and SEU cross section has been measured using a shift register.
It is planned that the current technological demonstrator will be flown on the VZLUSAT2 mission at the end of 2020.
