Measuring the ions momentum vector with a large acceptance magnetic spectrometer

被引：109

作者：

Cappuzzello, F. ^{[1
]}

Carbone, D. ^{[1
,2
]}

Cavallaro, M. ^{[1
]}

机构：

[1] Ist Nazl Fis Nucl, Lab Nazl Sud, Via S Sofia 62, I-95125 Catania, Italy

[2] Univ Catania, Dipartimento Fis & Astron, I-95125 Catania, Italy

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2011年 / 638卷 / 01期

关键词：

Magnetic spectrometers; Focal plane detectors; Trajectory reconstruction; FOCAL-PLANE DETECTOR; PARTICLE IDENTIFICATION; RECONSTRUCTIVE CORRECTION; FIELD MEASUREMENT; SPECTROGRAPHS; ABERRATIONS; SYSTEMS;

D O I：

10.1016/j.nima.2011.02.045

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

A technique to measure the momentum vector of the ions produced in a nuclear reaction and analyzed by a magnetic spectrometer is presented. It consists of a powerful procedure for the reconstruction of the ions trajectory based on the use of a focal plane detector, accurate three-dimensional models of the magnetic fields and efficient algorithms to solve the highly non-linear transport equations. The technique is quite general and reliable even with large acceptance optical devices. Experimental results obtained with the MAGNEX spectrometer show a remarkable resolution of about 0.2 degrees in the horizontal direction, 0.7 degrees in the vertical one and 1/1800 in the momentum modulus. A high degree of accuracy is also found in the reconstruction of both the direction and the modulus of the momentum vector, with the latter strongly depending on the order of reconstruction. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：74 / 82

页数：9

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