Multi-Pulse X-ray Sequencer with Plasma-Clearing Magnets
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Solution Overview
Problem
Existing multi-pulse X-ray solutions using multiple X-ray tubes close to each other result in pulse offsets that distort or obscure X-ray images.
Innovation Solution
A pulse sequencer that generates multiple X-ray pulses via a single X-ray tube, utilizing multiple pulse generators arranged in parallel, with isolation diodes and plasma-clearing magnets to reduce recovery time and increase pulse frequency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple X-ray tubes are arranged close to each other to achieve multiple pulses, then pulse frequency is improved, but pulse offsets occur that distort or obscure X-ray images
Solution Approach 1:
Multiple pulse generators are merged into a single integrated system that controls one X-ray tube, allowing multiple pulses to be generated from a single location without spatial offsets. The pulse generators share common components including the X-ray tube, housing, and magnetic field generation system, eliminating the distortion problems associated with multiple separate tubes.
Solution Approach 2:
The system segments the pulse generation function into multiple independent pulse generators (first, second, and third pulse generators) that operate sequentially within a single X-ray tube. Each pulse generator can be independently controlled with its own switch and isolation diode, enabling precise timing and frequency control without spatial interference.
2Reliability
If isolation diodes are used to separate pulse generators, then pulse generation reliability is improved, but recovery time increases due to plasma accumulation
Solution Approach 1:
The system converts the harmful plasma accumulation in isolation diodes into a beneficial effect by using magnetic fields to control and direct the plasma. The magnetic fields sweep plasma away from critical regions and guide it toward designated areas, transforming the plasma from a harmful obstacle into a controllable element that does not interfere with pulse generation reliability.
Solution Approach 2:
Magnetic fields are introduced as an intermediary mechanism between the pulse generators and isolation diodes. The magnetic fields mediate the interaction by controlling plasma movement, allowing the isolation diodes to maintain their reliability function while reducing recovery time through active plasma management rather than passive waiting.
3Productivity
If pulse generators are arranged in parallel to increase pulse frequency, then productivity is improved, but device complexity increases
Solution Approach 1:
The system uses a single X-ray tube that serves multiple functions by receiving pulses from different pulse generators. The housing structure serves multiple purposes including mechanical support, radiation shielding, and magnetic field containment. The magnetic field generation system is shared across all pulse generators, reducing overall system complexity while maintaining the ability to generate multiple pulses at high frequency.
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
Enables the production of multiple X-ray pulses from a single tube, reducing distortion and improving image clarity by minimizing pulse offsets and increasing pulse frequency.
Implementation Method 1
plasma (a medium of unbound positive and negative particles) created within the isolation diode during pulse generation
Implementation Method 2
Each isolation diode may include a set of one or more magnets that may be used to clear the plasma and reduce recovery time
Data Source
AI summary
A pulse sequencer that generates multiple X-ray pulses via a single X-ray tube is described. The pulse sequencer may include multiple pulse generators arranged in parallel. The parallel pulse generators may be multiplexed to the X-ray tube. Each pulse generator may include an energy source and a switch and may be connected to an isolation diode. Each switch may be closed in a sequence to generate multiple pulses. The isolation diodes may isolate each pulse generator from other pulse generators. Each isolation diode may include various features to reduce recovery time. After firing a pulse generator, the associated diode may be temporarily shorted by plasma created within the isolation diode during pulse generation. Each isolation diode may include a set of one or more magnets that may be used to clear the plasma and reduce recovery time such that pulse frequency may be increased.