Hall传感器的标定装置及相关标定实验研究

Hall传感器是加速器磁铁磁场测量必不可少的工具之一。为保证Hall传感器能够完成高精度的测量，在实际使用过程中，需要对其进行周期性标定。除此以外，当前加速器磁体的测试任务对Hall传感器的测量范围及工作温度提出了新的需求，因此建立一套标准的大跨度磁场及温度范围的Hall传感器标定系统具有非常重要的现实意义。基于此，搭建了一套完整的高精度Hall传感器标定系统并着重论述了其中的数据采集部分。目前基于该系统开展了一系列0~2.0 T磁场区(HHP-NP、HPCS、DTM151、HE244T等Hall传感器)下的标定尝试，标定曲线采用线性、多项式等不同方式拟合，结果表明拟合结果良好，线性偏离程度(测试结果线性偏离程度越小，精度越好)最优情况下好于0.01%。

Calibration Device of Hall Sensor and Related Calibration Experiment Research

One of the key tools for measuring the magnetic fields of accelerator magnets is the Hall sensor. Hall sensors must be frequently calibrated while in operation to guarantee that they can perform measurements with extreme accuracy. It is also of great practical importance to establish a standard Hall sensor calibration system with a broad span of magnetic field and temperature range because the current testing tasks of accelerator magnets have introduced new demands on the measurement range and operating temperature of Hall sensors. Dependent on this, a complete high-precision Hall sensor calibration system is built and the data acquisition part of the system is discussed here. Based on this system, a number of calibration attempts were made in the 0-2.0 T magnetic field region using Hall sensors like the HHP-NP, HPCS, DTM151, HE244T, etc. The calibration curves were fitted using both linear and polynomial methods, and the results show that the fitting results are good and the degree of linear deviation is better than 0.01%. The smaller the degree of linear deviation of the test results, the more accurate the measurements.