Simulation and measurement of the fringe field of the 1.5 T BABAR solenoid

被引：7

作者：

Antokhin, E

Buzykaev, A

Chupyra, A

Fedorov, D

Ganzhur, S

Kolachev, G

Litvinov, A

Medvedko, A

Mikerov, V

Mikhailov, S

Onuchin, A

Singatulin, S

Aleksan, R

Bourgeois, P

Gosset, L

Graffin, P

London, G ^{[1
]}

Mols, JP

Toussaint, JC

Berndt, M

Coombes, R

Ecklund, S

Jensen, D

Keller, L

Krebs, J

Lynch, H

Wolf, Z

机构：

[1] Ctr Etud Saclay, CEA, DAPNIA, F-91191 Gif Sur Yvette, France

[2] Budker Inst Nucl Phys, Novosibirsk 630090, Russia

[3] Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 1999年 / 432卷 / 01期

关键词：

magnetic shielding; measurements of magnetic fields; finite element analysis; B-factory experiment; CP-violation;

D O I：

10.1016/S0168-9002(99)00278-8

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

In the context of the SLAG PEP-II asymmetric e(+)e(-) collider and the BABAR detector with its 1.5 T solenoid, we have calculated and measured the fringe field at the nearby beam elements and at the position of the photomultipliers external to the return iron but within a specially designed iron shield. The comparisons of these measurements with the simulations based on finite element analysis are remarkably good, within about 5 G at the most critical beam element. The field at the photomultipliers is less than 1 G, in agreement with the simulation. With a simple method of demagnetization of the shield, a maximum held of 0.6 G is obtained. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：24 / 47

页数：24

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