A precise method to measure horizontal field components in dipole magnets

被引：2

作者：

Schulein, LKO ^{[1
]}

Jungwirth, HN ^{[1
]}

机构：

[1] Natl Accelerator Ctr, ZA-7131 Faure, South Africa

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 1997年 / 401卷 / 2-3期

关键词：

dipole magnets; magnetic median plane measurements; Hall-generators; electrolytic level sensors;

D O I：

10.1016/S0168-9002(97)01022-X

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The precise measurement of horizontal field components in dipole magnets has been investigated experimentally. Measuring devices have been evaluated in detail, results of these tests are presented and a basic method of measurement is proposed. Three Hall-generators and two electrolytic level sensors are mounted orthogonal to each other onto a manually adjustable measuring head. A better understanding of the relevant effects on these devices did lead to a markedly improved accuracy of such measurements. With proper calibration, horizontal field components in the microtesla range can be resolved at vertical field levels of 1-2 T. Of particular importance for such applications is that the alignment of Hall-generators in field direction shows a slight but significant field dependence (Hall offset angle) which has to be taken into account.

引用

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页码：171 / 178

页数：8

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