Development of a two-stage magnetic electron-guide
A fully operational electron-guide, constituted by the succession of a toroidal magnetic lens and a solenoid, is described and its properties are tested. An absolute efficiency between 1% and 2.2% is obtained in a large energy range, from 150 keV to more than 2 MeV, together with a large β + rejecti...
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| Veröffentlicht in: | Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Accelerators, spectrometers, detectors and associated equipment, 2002-07, Vol.487 (3), p.268-274 |
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| Hauptverfasser: | , |
| Format: | Artikel |
| Sprache: | eng |
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| Online-Zugang: | Volltext |
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| Zusammenfassung: | A fully operational electron-guide, constituted by the succession of a toroidal magnetic lens and a solenoid, is described and its properties are tested. An absolute efficiency between 1% and 2.2% is obtained in a large energy range, from 150
keV to more than 2
MeV, together with a large β
+ rejection. It is shown that a substantial efficiency increase can be obtained by superposing an axial magnetic field on the toroidal one. |
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| ISSN: | 0168-9002 1872-9576 |
| DOI: | 10.1016/S0168-9002(01)02203-3 |