Towards high brightness electron beams from multifilamentary Nb_{3}Sn wire photocathode
In order to find electron sources of low emittance and high quantum efficiency, single tip cathodes with a microstructured surface are investigated. Emission currents up to 310 A were obtained, by combining a 2 ns, 50 kV accelerating voltage pulse with a 266 nm wavelength, picosecond (σ_{t}=6.2 ps)...
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American Physical Society
2013-04-01
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| Series: | Physical Review Special Topics. Accelerators and Beams |
| Online Access: | http://doi.org/10.1103/PhysRevSTAB.16.043401 |
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doaj-4aa2cb1e6b8b483fa7ddabbcaac6f9952020-11-25T02:14:20ZengAmerican Physical SocietyPhysical Review Special Topics. Accelerators and Beams1098-44022013-04-0116404340110.1103/PhysRevSTAB.16.043401Towards high brightness electron beams from multifilamentary Nb_{3}Sn wire photocathodeF. Ardana-LamasF. Le PimpecA. AnghelC. P. HauriIn order to find electron sources of low emittance and high quantum efficiency, single tip cathodes with a microstructured surface are investigated. Emission currents up to 310 A were obtained, by combining a 2 ns, 50 kV accelerating voltage pulse with a 266 nm wavelength, picosecond (σ_{t}=6.2 ps) laser delivering a few μJ pulse energy. The multifilamentary cylindric Nb_{3}Sn tip with a typical diameter of 0.8 mm provides quantum efficiencies up to 0.5%. The microstructured needle has also been tested in a combined diode-rf electron gun with 500 kV, 250 ns pulsed bias voltage as a first step towards reducing emittance-spoiling space-charge forces.http://doi.org/10.1103/PhysRevSTAB.16.043401 |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
F. Ardana-Lamas F. Le Pimpec A. Anghel C. P. Hauri |
| spellingShingle |
F. Ardana-Lamas F. Le Pimpec A. Anghel C. P. Hauri Towards high brightness electron beams from multifilamentary Nb_{3}Sn wire photocathode Physical Review Special Topics. Accelerators and Beams |
| author_facet |
F. Ardana-Lamas F. Le Pimpec A. Anghel C. P. Hauri |
| author_sort |
F. Ardana-Lamas |
| title |
Towards high brightness electron beams from multifilamentary Nb_{3}Sn wire photocathode |
| title_short |
Towards high brightness electron beams from multifilamentary Nb_{3}Sn wire photocathode |
| title_full |
Towards high brightness electron beams from multifilamentary Nb_{3}Sn wire photocathode |
| title_fullStr |
Towards high brightness electron beams from multifilamentary Nb_{3}Sn wire photocathode |
| title_full_unstemmed |
Towards high brightness electron beams from multifilamentary Nb_{3}Sn wire photocathode |
| title_sort |
towards high brightness electron beams from multifilamentary nb_{3}sn wire photocathode |
| publisher |
American Physical Society |
| series |
Physical Review Special Topics. Accelerators and Beams |
| issn |
1098-4402 |
| publishDate |
2013-04-01 |
| description |
In order to find electron sources of low emittance and high quantum efficiency, single tip cathodes with a microstructured surface are investigated. Emission currents up to 310 A were obtained, by combining a 2 ns, 50 kV accelerating voltage pulse with a 266 nm wavelength, picosecond (σ_{t}=6.2 ps) laser delivering a few μJ pulse energy. The multifilamentary cylindric Nb_{3}Sn tip with a typical diameter of 0.8 mm provides quantum efficiencies up to 0.5%. The microstructured needle has also been tested in a combined diode-rf electron gun with 500 kV, 250 ns pulsed bias voltage as a first step towards reducing emittance-spoiling space-charge forces. |
| url |
http://doi.org/10.1103/PhysRevSTAB.16.043401 |
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AT fardanalamas towardshighbrightnesselectronbeamsfrommultifilamentarynb3snwirephotocathode AT flepimpec towardshighbrightnesselectronbeamsfrommultifilamentarynb3snwirephotocathode AT aanghel towardshighbrightnesselectronbeamsfrommultifilamentarynb3snwirephotocathode AT cphauri towardshighbrightnesselectronbeamsfrommultifilamentarynb3snwirephotocathode |
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