Characterization of Spatiotemporal Overlap of Femtosecond Lasers and Electron Beam With Ce:YAG Screens
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| Main Authors: | , , , , , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866909576652128256 |
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| author | Eckrosh, Kevin Tilton, Sean Malin, Lucas Brown, Taryn Dupre, Alan Semaan, Antonella Gardeck, Alex Babic, Gregory Lee, Hyung Seo Loos, Henrik Hussein, Mukhtar Sandhu, Arvinder Graves, William S. Holl, Mark R. Teitelbaum, Samuel W. |
| author_facet | Eckrosh, Kevin Tilton, Sean Malin, Lucas Brown, Taryn Dupre, Alan Semaan, Antonella Gardeck, Alex Babic, Gregory Lee, Hyung Seo Loos, Henrik Hussein, Mukhtar Sandhu, Arvinder Graves, William S. Holl, Mark R. Teitelbaum, Samuel W. |
| contents | Interactions between short laser pulses and electron bunches determine a wide range of accelerator applications. Finding spatiotemporal overlap between few-micron-sized optical and electron beams is critical, yet there are few routine diagnostics for this purpose. We present a method for achieving spatiotemporal overlap between a picosecond laser pulse and a relativistic sub-ps electron bunch. The method uses the transient change in optical transmission of a Ce:YAG screen upon irradiation with a short electron bunch to co-time the electron and laser beams. We demonstrate and quantify the performance of this method using an inverse Compton source comprised of a 30 MeV electron beam from an X-band linac focused to a 10 $μ$m spot, overlapped with a joule-class picosecond Yb:YAG laser system. This method is applicable to electron beams with few-microjoule bunch energies, and uses standard scintillator screens common in electron accelerators. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_09001 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Characterization of Spatiotemporal Overlap of Femtosecond Lasers and Electron Beam With Ce:YAG Screens Eckrosh, Kevin Tilton, Sean Malin, Lucas Brown, Taryn Dupre, Alan Semaan, Antonella Gardeck, Alex Babic, Gregory Lee, Hyung Seo Loos, Henrik Hussein, Mukhtar Sandhu, Arvinder Graves, William S. Holl, Mark R. Teitelbaum, Samuel W. Accelerator Physics Interactions between short laser pulses and electron bunches determine a wide range of accelerator applications. Finding spatiotemporal overlap between few-micron-sized optical and electron beams is critical, yet there are few routine diagnostics for this purpose. We present a method for achieving spatiotemporal overlap between a picosecond laser pulse and a relativistic sub-ps electron bunch. The method uses the transient change in optical transmission of a Ce:YAG screen upon irradiation with a short electron bunch to co-time the electron and laser beams. We demonstrate and quantify the performance of this method using an inverse Compton source comprised of a 30 MeV electron beam from an X-band linac focused to a 10 $μ$m spot, overlapped with a joule-class picosecond Yb:YAG laser system. This method is applicable to electron beams with few-microjoule bunch energies, and uses standard scintillator screens common in electron accelerators. |
| title | Characterization of Spatiotemporal Overlap of Femtosecond Lasers and Electron Beam With Ce:YAG Screens |
| topic | Accelerator Physics |
| url | https://arxiv.org/abs/2504.09001 |