High temperature superconducting runway coil array type undulator

Abstract

The invention relates to a high temperature superconducting runway coil array type undulator. The undulator comprises two rows of high temperature superconducting coil arrays which are longitudinally spaced and arranged in parallel; each row of high temperature superconducting coil array comprises n groups of magnetic pole coil assemblies which are axially arranged, and each group of magnetic pole coil assembly comprises a pair of magnetic poles and coils arranged between the pair of magnetic poles, wherein n is a natural number; the undulator also comprises a direct-current power supply which is used for supplying power to the coils; and the electric current direction of the direct-current power supply is set in a manner of ensuring magnetic induction intensity generated by the two adjacent coils to be identical in size and opposite in direction. The undulator has relatively high superconducting critical temperature through the adoption of a high temperature superconducting material so that the running temperature of the undulator is high, thereby the refrigeration cost is effectively reduced, and simultaneously the magnetic induction intensity is increased; and in addition, as the size of a magnetic field generated by the undulator can be adjusted by adjusting the magnitude of energizing currents of the coils, the undulator is very convenient to adjust. The high temperature superconducting runway coil array type undulator is suitable for a synchronous radiation device and a free electron laser device.

Description

technical field [0001] The invention relates to a high-temperature superconducting track coil array type undulator. Background technique [0002] An undulator is a device that generates a periodic magnetic field, and is a core component in synchrotron radiation devices and free electron laser devices. When the electron beam passes through the periodic magnetic field generated by the undulator, the emitted X-rays interfere, thereby obtaining high-brightness quasi-monochromatic light. [0003] At present, the synchrotron radiation light source mainly uses a rare earth permanent magnet undulator at room temperature, and its main limitations are: the magnetic induction intensity it can achieve is low, and the adjustment of the magnetic field is troublesome. The reason for the above limitations is that the normal temperature rare earth permanent magnet undulator is limited by the maximum remanence that the rare earth permanent magnet material itself can achieve, and the magnetic...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above problems in the prior art, the present invention aims to provide a high-temperature superconducting racetrack coil array undulator to overcome the inflexible adjustment of the magnetic field size of the existing normal-temperature rare-earth permanent magnet undulator and the operating temperature of the low-temperature superconducting undulator. Low disadvantages, to achieve the purpose of flexibly adjusting the size of the magnetic field and reducing operating costs

Images