Electromagnet Beam Selection for Ion Therapy Systems
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Solution Overview
Problem
Existing particle beam apparatuses face challenges in downsizing and cost reduction due to limited installation space and high costs, particularly in facilities where multiple ion beams with different species need to be managed efficiently.
Innovation Solution
A particle beam apparatus incorporating a bending electromagnet that can selectively deflect and separate ion beams from multiple ion sources by adjusting magnetic field intensity, allowing one ion beam to be directed to a device on the downstream side while reducing the exit of different types of beams, thus eliminating the need for additional analysis devices and simplifying the beam transport system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple ion beams from different ion sources are transported through separate beam transport paths with bending electromagnets, then each ion beam can be transported to the electromagnet, but the apparatus size increases and costs increase
Solution Approach 1:
The patent merges multiple beam transport paths into a single shared beam transport path. The electromagnet is configured to receive ion beams from multiple ion sources through this common path, eliminating the need for separate transport paths for each ion source. This reduces the overall apparatus size and simplifies the beam transport system while maintaining the capability to handle multiple ion beam types.
Solution Approach 2:
The electromagnet is designed with multi-functionality to serve as a universal component that can handle multiple ion beam types from different ion sources. By configuring the electromagnet to selectively receive and process different ion beams through a single beam transport path, the system achieves versatility without requiring dedicated transport paths for each ion source.
2Manufacturing precision
If separate analysis devices are added to reduce mixed beam interference, then beam purity improves, but device complexity and cost increase
Solution Approach 1:
The electromagnet is designed to perform multiple functions simultaneously: it acts as both a beam transport steering device and a beam species separation/analysis device. By configuring the electromagnet to selectively receive ion beams based on their species through magnetic field manipulation, the system achieves beam purity improvement without adding separate analysis devices, thus reducing overall device complexity.
Solution Approach 2:
The patent combines the beam transport function and beam analysis/separation function into a single electromagnet component. This merging eliminates the need for separate analysis devices that would otherwise be required to reduce mixed beam interference, simplifying the overall system while maintaining beam species separation precision.
3Device complexity
If a single beam transport path is used for multiple ion sources, then apparatus size reduces, but mixed beam interference increases
Solution Approach 1:
The electromagnet utilizes parameter changes in magnetic field intensity to selectively control which ion beams are received through the shared beam transport path. By adjusting the magnetic field parameters, the electromagnet can selectively attract specific ion beam types while repelling or deflecting others, thereby reducing mixed beam interference despite using a single transport path.
Solution Approach 2:
The electromagnet performs the dual function of beam transport and beam species selection through magnetic field manipulation. This multi-functionality allows the single beam transport path to handle multiple ion sources while the electromagnet's selective reception capability prevents mixed beam interference from reaching the downstream device.
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
This configuration enables the downsizing and cost reduction of the particle beam apparatus by allowing selective switching of ion beams, reducing mixed beam interference, and eliminating the need for separate analysis devices, while providing efficient beam diagnostics and therapy capabilities.
Implementation Method 1
the electromagnet is capable of deflecting the one of the ion beam to be exited to the device on a downstream side toward the device on the downstream side
Implementation Method 2
from which one of the ion beams is capable of selectively exiting to a device on a downstream side by switching a magnetic field intensity
Data Source
AI summary
A particle beam apparatus includes: an electromagnet to which each ion beam from a plurality of ion sources having different ion species is capable of being introduced, and from which one of the ion beams is capable of selectively exiting to a device on a downstream side by switching a magnetic field intensity, in which the electromagnet is capable of deflecting the one of the ion beam to be exited to the device on the downstream side toward the device on the downstream side, and is capable of reducing exit of a different type of beam mixed in the ion beam to the device on the downstream side, the different type of beam being different from the one of the ion beam.