Circular accelerator magnetic field measuring device

Abstract

The invention discloses a circular accelerator magnetic field measuring device. The device comprises a movement mechanism (1), a motor (4) and data lines (2, 14), wherein the movement mechanism (1) is arranged inside a main magnet (3) and can measure a magnetic field, the motor (4) is arranged outside the main magnet (3) and connected with the movement mechanism (1), and the data lines (2, 14) are connected with the movement mechanism (1) and the motor (4). The movement mechanism, the motor and the data lines connected with the movement mechanism and the motor are all arranged in closed space. According to the technical scheme, it is ensured that the measuring device can operate under the vacuum conditions, the accuracy of a measuring result is ensured, and data which are more accurate are provided for magnetic field shimming and particle dynamics computation.

Description

Technical field

[0001] The invention belongs to the field of cyclotrons, and specifically relates to a cyclotron magnetic field measuring device. Background technique

[0002] In the operation of the cyclotron, the center plane and valley area of ​​the accelerator are always in a high vacuum state, and the magnetic field measurement process is generally carried out under the atmosphere. Therefore, the magnetic field measurement results cannot truly represent the magnetic field value during the operation of the accelerator, especially for In a large cyclotron, the atmospheric pressure weighs hundreds of tons. The atmospheric pressure causes the deformation of the accelerator magnet. The deformation of the magnet affects the magnetic field distribution in the center plane of the accelerator and further affects the beam quality of the accelerator. The common practice at home and abroad is to use the vacuum shimming factor to compensate, such as the Belgian IBA company and the CYCIAE...

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