Superconducting Undulator Phase Error Compensation

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Solution Overview

Problem

Conventional methods for reducing phase errors in superconducting undulators, such as shimming with additional coils, are complex, expensive, and require cooling cycles, inadequately addressing field deviations and complicating the device design.

Innovation Solution

A device with closed superconducting loops arranged around magnetic poles in superconducting undulators, where the loops automatically compensate for field errors by inducing a counteracting magnetic field, allowing for error correction without cooling cycles, using an arrangement of overlapping or adjacent loops to balance pole differences.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If shimming with additional coils is used to reduce phase errors, then field errors can be compensated, but the device becomes complex and expensive requiring multiple cooling cycles

Engineering Contradiction:
Improvephase error reductionVSAvoiddevice complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The superconducting loop automatically detects and compensates for field errors through self-induced currents without requiring external measurement or control systems. The loop serves both as the error source indicator and the correction mechanism, eliminating the need for complex shimming procedures with additional coils and multiple cooling cycles.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The invention extracts the correction function from complex external shimming systems and integrates it into a simple superconducting loop that is already part of the undulator structure. By removing the need for additional measurement and control apparatus, the solution significantly reduces device complexity while maintaining phase error correction capability.

Inventive Principle:
Principle #2Taking out (Extraction)

2Manufacturing precision

If conventional shimming procedures are used, then field errors can be corrected, but multiple cooling cycles are required which reduces productivity

Engineering Contradiction:
Improvephase error reductionVSAvoidproductivity
Core Design Contradiction:
Manufacturing precisionVSProductivity

Solution Approach 1:

The superconducting loop operates continuously during undulator operation, providing real-time compensation for field errors without interruption. The correction action is continuous and automatic, eliminating the need for repeated cooling cycles required by conventional shimming methods, thereby significantly improving productivity.

Inventive Principle:
Principle #20Continuity of useful action

Solution Approach 2:

The superconducting loop is pre-installed and prepared in the undulator structure before operation. The compensation mechanism is already in place and activated automatically when the undulator operates, eliminating the need for post-installation shimming procedures and multiple cooling cycles, thus improving productivity from the outset.

Inventive Principle:
Principle #10Preliminary action

3Manufacturing precision

If additional superconducting loops are introduced for error compensation, then phase errors can be reduced, but the device complexity increases and space requirements expand

Engineering Contradiction:
Improvephase error reductionVSAvoidspace requirements
Core Design Contradiction:
Manufacturing precisionVSArea of stationary object

Solution Approach 1:

The superconducting loop serves multiple functions: it acts as both the undulator magnet structure and the error detection/compensation mechanism. This multi-functionality eliminates the need for separate correction coils and associated control systems, reducing space requirements while maintaining phase error correction capability.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The invention merges the undulator magnet structure with the error compensation mechanism into a single integrated superconducting loop system. By combining these functions into one component rather than using separate elements, the solution reduces the overall space requirements and simplifies the device structure.

Inventive Principle:
Principle #5Merging (Combining)

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 device effectively reduces phase errors in superconducting undulators by automatically compensating for field deviations without the need for cooling cycles, simplifying operation and reducing costs, as demonstrated by the mathematical system of equations solving for correction values.

Implementation Method 1

the loops automatically compensate for field errors by inducing a counteracting magnetic field

Methodology Applied
Scientific EffectElectromagnetic induction: Electromagnetic Induction

Implementation Method 2

at least one closed superconducting loop arranged to enclose at least two poles

Methodology Applied
Scientific EffectSuperconductivity: Superconductivity

Data Source

PatentEP2279650B1Device for reducing phase error of a superconducting undulator
Publication Date: 2012.11.07 KARLSRUHER INST FUR TECH
  • EP2279650B1 patent drawingFigure 1
  • EP2279650B1 patent drawingFigure 2a~2b
  • EP2279650B1 patent drawingFigure 3a~3b

AI summary

The invention relates to a device for reducing the phase error of a superconducting undulator, having two rows of magnetic poles disposed next to each other, the magnetic fields of any two adjacent poles in one of the rows having different signs, characterized in that the device comprises at least one closed superconducting loop disposed such that at least two poles in one of the two rows have a superconducting loop encompassing said poles. The device according to the invention automatically compensates for the phase error of the superconducting undulator. The phase error can thereby be reduced, without cooling, heating, and re-cooling of the superconducting undulator being necessary.