Charged Particle Sensor with Segmented Silicon Telescopes
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Solution Overview
Problem
Current space particle sensors have limitations such as large dimensions and mass, high power consumption, limited flux channel resolution, and inability to measure electron fluxes below certain thresholds, making them inadequate for comprehensive detection of charged particles in space environments.
Innovation Solution
An environmental sensor system comprising independent silicon detector stacks for low, medium, and high energy proton and electron telescopes, along with an electrostatic analyzer for energy filtering and charge multiplication, covering a wide range of energies from 100 eV to 5 MeV for electrons and 2 MeV to 100 MeV for protons, enabling real-time measurement and prediction of charged particle hazards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If comprehensive particle detection coverage is implemented, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The sensor system is divided into multiple independent detector stacks, each dedicated to specific particle types and energy ranges. This segmentation allows comprehensive coverage while keeping individual detector designs simple and manageable, resolving the contradiction between comprehensive detection and system complexity.
Solution Approach 2:
Each detector stack is designed to detect multiple particle types (electrons and protons) across different energy ranges, making the detectors multi-functional. This universality achieves comprehensive particle detection coverage without proportionally increasing system complexity, as each component serves multiple detection purposes.
2Adaptability or versatility
If wide energy range measurement is implemented, then adaptability is improved, but device complexity increases
Solution Approach 1:
The energy measurement range is segmented into distinct detector stacks, with each stack optimized for specific energy ranges. This segmentation enables wide overall energy coverage while maintaining simple, specialized designs for each detector, avoiding the complexity that would result from attempting to measure all energies with a single detector type.
Solution Approach 2:
Each detector stack is designed with local quality optimized for its specific energy range, using materials and geometries tailored to detect particles of particular energies. This localized optimization achieves wide adaptability across energy ranges while keeping each detector's design simple and purpose-specific.
3Productivity
If real-time measurement capability is implemented, then productivity is improved, but use of energy increases
Solution Approach 1:
The system replaces complex mechanical scanning mechanisms with direct, simultaneous measurement capabilities using multiple detector stacks. This substitution enables real-time measurement of particle flux across energy ranges without the high power consumption associated with rapid mechanical movement or sequential scanning, achieving productivity improvement with moderate energy use.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system provides comprehensive and real-time measurements of charged particle flux and energy, enhancing the ability to predict and attribute anomalies caused by space radiation, with improved channel resolution and dynamic energy range adjustment, while maintaining a compact, low-power design.
Implementation Method 1
an electrostatic analyzer for energy filtering and charge multiplication
Implementation Method 2
independent silicon detector stacks for low, medium, and high energy proton and electron telescopes
Data Source
AI summary
An environmental sensor may acquire data related to flux and energy of charged particles in an environment for using the data to determine, in substantially real time, whether the environment is conducive to an anomaly caused by the charged particles. The sensor may include an electrostatic analyzer structurally configured for charged particle detection, the electrostatic analyzer generating controllable electric fields to provide energy filtering of incoming charged particles, where, after filtering, the charged particles impact a charge multiplier to establish a detectable signal. The sensor may further include a plurality of silicon detector telescopes structurally configured to collectively detect electrons having energy within the range of about 100 electronvolts (eV) to about 5 mega-electronvolts (MeV) and to collectively detect protons having energy within the range of about 2 MeV to about 100 MeV.