Photocathode quantum efficiency mapping at high resolution using a digital micromirror device
An electron beam’s quality is fundamentally limited by its attributes at the cathode. The emission from photocathodes can be bright, but not necessarily uniform. Quantum efficiency (QE) maps generated by selectively illuminating the cathode surface reveal this nonuniformity. In this paper a proof-of...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2013-06-01
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| Series: | Physical Review Special Topics. Accelerators and Beams |
| Online Access: | http://doi.org/10.1103/PhysRevSTAB.16.062802 |
| _version_ | 1819001262290501632 |
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| author | B. C. Riddick E. J. Montgomery R. B. Fiorito H. D. Zhang A. G. Shkvarunets Z. Pan S. A. Khan |
| author_facet | B. C. Riddick E. J. Montgomery R. B. Fiorito H. D. Zhang A. G. Shkvarunets Z. Pan S. A. Khan |
| author_sort | B. C. Riddick |
| collection | DOAJ |
| description | An electron beam’s quality is fundamentally limited by its attributes at the cathode. The emission from photocathodes can be bright, but not necessarily uniform. Quantum efficiency (QE) maps generated by selectively illuminating the cathode surface reveal this nonuniformity. In this paper a proof-of-principle experiment is described in which a high resolution map of the QE is generated using a digital micromirror device. We show a substantial improvement over the best results reported for laser raster scanning. |
| first_indexed | 2024-12-20T22:46:25Z |
| format | Article |
| id | doaj.art-c66986e45482433bb6fa09c6cee10336 |
| institution | Directory Open Access Journal |
| issn | 1098-4402 |
| language | English |
| last_indexed | 2024-12-20T22:46:25Z |
| publishDate | 2013-06-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Special Topics. Accelerators and Beams |
| spelling | doaj.art-c66986e45482433bb6fa09c6cee103362022-12-21T19:24:22ZengAmerican Physical SocietyPhysical Review Special Topics. Accelerators and Beams1098-44022013-06-0116606280210.1103/PhysRevSTAB.16.062802Photocathode quantum efficiency mapping at high resolution using a digital micromirror deviceB. C. RiddickE. J. MontgomeryR. B. FioritoH. D. ZhangA. G. ShkvarunetsZ. PanS. A. KhanAn electron beam’s quality is fundamentally limited by its attributes at the cathode. The emission from photocathodes can be bright, but not necessarily uniform. Quantum efficiency (QE) maps generated by selectively illuminating the cathode surface reveal this nonuniformity. In this paper a proof-of-principle experiment is described in which a high resolution map of the QE is generated using a digital micromirror device. We show a substantial improvement over the best results reported for laser raster scanning.http://doi.org/10.1103/PhysRevSTAB.16.062802 |
| spellingShingle | B. C. Riddick E. J. Montgomery R. B. Fiorito H. D. Zhang A. G. Shkvarunets Z. Pan S. A. Khan Photocathode quantum efficiency mapping at high resolution using a digital micromirror device Physical Review Special Topics. Accelerators and Beams |
| title | Photocathode quantum efficiency mapping at high resolution using a digital micromirror device |
| title_full | Photocathode quantum efficiency mapping at high resolution using a digital micromirror device |
| title_fullStr | Photocathode quantum efficiency mapping at high resolution using a digital micromirror device |
| title_full_unstemmed | Photocathode quantum efficiency mapping at high resolution using a digital micromirror device |
| title_short | Photocathode quantum efficiency mapping at high resolution using a digital micromirror device |
| title_sort | photocathode quantum efficiency mapping at high resolution using a digital micromirror device |
| url | http://doi.org/10.1103/PhysRevSTAB.16.062802 |
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