ECR AND CESIUM IONIZER SYSTEMS FOR THE TRIANGLE-UNIVERSITIES NUCLEAR-LABORATORY ATOMIC-BEAM POLARIZED ION-SOURCE

被引：9

作者：

CLEGG, TB

HOOKE, WM

CROSSON, ER

LOVETTE, AW

MIDDLETON, HL

PFUTZNER, HG

SWEETON, KA

机构：

[1] TRIANGLE UNIV NUCL LAB,DURHAM,NC 27708

[2] DUKE UNIV,DEPT PHYS,DURHAM,NC 27706

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 1995年 / 357卷 / 2-3期

关键词：

D O I：

10.1016/0168-9002(94)01088-9

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

A plasma ionizer in which the electrons are heated via electron-cyclotron resonance is used to produce beams of polarized H+ (or D+) ions from spin-polarized H-0 (or D-0) beams. The plasma is confined axially via a magnetic mirror field and radially by a sextupole field created by permanent magnets. Plasma heating is accomplished via 75 to 100 W of rf power fed radially into the region between the mirror coils either from a variable frequency, 2.8 or 4.8 GHz traveling wave tube amplifier or from a 2.45 GHz magnetron source. The operation of the system is simple, stable, and reproducible. The extracted positive polarized beam can be converted to negative by adding electrons in a cesium vapor charge-exchange canal; the effective conversion efficiency ranges between 15 and 20%. The extracted polarized beam has an energy spread < 15 eV.

引用

页码：212 / 219

页数：8

共 16 条

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