Vacuum-Tight Coil Container for Magnetic Pole Piece Alignment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electric-magnetic multipole elements face challenges in maintaining dimensional precision, positioning accuracy, and stability due to gas emission, brittleness, and mechanical instabilities caused by synthetic resin embedding, as well as difficulties in achieving high excitation without inducing heat-related deformations and misalignments.
Innovation Solution
The design includes a pole piece, yoke, and vacuum-tight container with a holder to keep the container spaced from the pole piece and yoke, allowing for separate thermal management and maintaining alignment accuracy, using welding, soldering, or O-rings for vacuum-tight seals, and enabling modular assembly for easier maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the coils are placed directly in the vacuum chamber, then the device complexity is reduced, but the dimensional precision and positioning accuracy deteriorate due to heat-induced deformations and mechanical instabilities
Solution Approach 1:
The device is divided into separate vacuum and non-vacuum sections. The coils are placed in a non-vacuum chamber separated from the vacuum chamber by a vacuum barrier, allowing independent thermal management and positioning for each section without mutual interference.
Solution Approach 2:
A vacuum barrier (such as a vacuum window or membrane) is introduced as an intermediary between the vacuum chamber and the coil chamber. This barrier allows magnetic field transmission while physically separating the thermal environments, preventing heat-induced deformations from affecting the vacuum components.
2Power
If the coils are excited to high levels, then the field-generating capability is improved, but the stability deteriorates due to heat-related deformations and misalignments
Solution Approach 1:
The system is segmented into thermally isolated zones: the coil chamber can be independently cooled or temperature-controlled while the vacuum chamber maintains stable temperature conditions, allowing high power excitation without compromising alignment stability.
Solution Approach 2:
The vacuum barrier acts as a thermal intermediary that blocks heat transfer from the high-power coils to the sensitive vacuum components, enabling high field-generating capability while maintaining alignment stability in the vacuum chamber.
3Device complexity
If the pole piece and electrode are directly connected to the vacuum chamber, then the device complexity is reduced, but the reliability deteriorates due to gas emission and brittleness from synthetic resin embedding
Solution Approach 1:
The vacuum chamber is segmented from the coil and electrode support structures. The pole piece and electrode can be mounted on separate fixtures that do not require synthetic resin embedding, eliminating the source of gas emission and brittleness while maintaining vacuum integrity.
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 prevents direct heat transfer, reduces mechanical instabilities, and allows for higher coil excitations without beam drift, enabling more compact designs or improved performance with better alignment and maintenance capabilities.
Implementation Method 1
at least one coil (20) for generating a magnetic field
Implementation Method 2
vacuum-tight container (21) accommodating the at least one coil (20)
Implementation Method 3
holder (40) holding the vacuum-tight container (21) in such a way that the vacuum-tight container (21) is spaced from the magnetic pole piece (10) and from the magnetic yoke (12)
Data Source
AI summary
An electric-magnetic field-generating element and a multipole element comprising a plurality of these field-generating elements providing for a stable charged particle beam are described. For some embodiments, the electric-magnetic field-generating element includes a pole piece, a yoke to which the pole piece is attached, at least one coil, a vacuum-tight container accommodating the coil(s), and a holder adapted to hold the vacuum-tight container such that the vacuum-tight container is spaced from the pole piece and the yoke.