CPT Scope Design
Particle Telescopes: The heart of CPT-SCOPE will be an absorber-sensor-stack, also known as particle telescope geometry. This sensor stack will be encased in an aluminium and copper framework which functions both as mechanical stress protection and as a shield against external interference on the sensor stack. Two particle telescopes will be provided in the design, one with 4 sensors per stack, the other with 5. This is a result of previous simulation results and due to the limited amount of funds.
Shows a sketch the absorber-sensor stack in framework.
Front-end Electronics: It will carry out the read-out and amplification of sensor data. A Norwegian-developed Application-Specific Integrated Circuit, short ASIC, will carry out the sensor reading on up to 20 separate channels and provides respective digital outputs.The ASIC will be interfaced with a Field-Programmable Gate Array board, FPGA, which will count the number of particle events provided by the ASIC and communicate with the on-board computer (OBC).
On-Board Computer: A Raspberry Pi (model: B+) will act as on-board computer (OBC) system connecting to the FPGA for read-out and commanding of the system. The Raspberry Pi will also store raw data to memory and provide live data streaming to our ground station. Remote commanding via the BEXUS E-link will also be implemented.
Shows a sketch of the Raspberry Pi model B+
Housekeeping Sensors: Pressure and temperature sensors will be used to obtain valuable telemetry data. In addition, a GPS-module (functioning up to 40 km) will be used for timekeeping and independent altitude readings. Thermistors will be used to do temperature readings on the sensor heads.