Near-Infrared noise in intense electron bunches
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arXiv
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| Autori principali: | , , , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866918302949834752 |
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| author | Kladov, Sergei Nagaitsev, Sergei Lumpkin, Alex H. Ruan, Jinhao Thurman-Keup, Randy M. Saewert, Andrea Huang, Zhirong Kim, Young-Kee Broemmelsiek, Daniel R. Jarvis, Jonathan |
| author_facet | Kladov, Sergei Nagaitsev, Sergei Lumpkin, Alex H. Ruan, Jinhao Thurman-Keup, Randy M. Saewert, Andrea Huang, Zhirong Kim, Young-Kee Broemmelsiek, Daniel R. Jarvis, Jonathan |
| contents | This article investigates electron bunch density fluctuations in the 1 - 10 $μm$ wavelength range, focusing on their impact on coherent electron cooling (CEC) in hadron storage rings. In this study, we thoroughly compare the shot-noise model with experimental observations of optical transition radiation (OTR) generated by a relativistic electron bunch ($γ\approx$ 50), transiting an Aluminium metal surface. The bunch parameters are close to those proposed for a stage in an Electron-Ion Collider (EIC), where the bunch size is much larger than the OTR wavelength being measured. Here we present measurements and particle tracking results of both the low-level noise for the EIC bunch parameters and longitudinal space-charge-induced microbunching for the chicane-compressed bunch with coherent OTR enhancements up to 100 times in the various bandwidth-filtered near-infrared (NIR) OTR photodiode signals. We also discuss the corresponding limitations of the OTR method. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2412_13482 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Near-Infrared noise in intense electron bunches Kladov, Sergei Nagaitsev, Sergei Lumpkin, Alex H. Ruan, Jinhao Thurman-Keup, Randy M. Saewert, Andrea Huang, Zhirong Kim, Young-Kee Broemmelsiek, Daniel R. Jarvis, Jonathan Accelerator Physics This article investigates electron bunch density fluctuations in the 1 - 10 $μm$ wavelength range, focusing on their impact on coherent electron cooling (CEC) in hadron storage rings. In this study, we thoroughly compare the shot-noise model with experimental observations of optical transition radiation (OTR) generated by a relativistic electron bunch ($γ\approx$ 50), transiting an Aluminium metal surface. The bunch parameters are close to those proposed for a stage in an Electron-Ion Collider (EIC), where the bunch size is much larger than the OTR wavelength being measured. Here we present measurements and particle tracking results of both the low-level noise for the EIC bunch parameters and longitudinal space-charge-induced microbunching for the chicane-compressed bunch with coherent OTR enhancements up to 100 times in the various bandwidth-filtered near-infrared (NIR) OTR photodiode signals. We also discuss the corresponding limitations of the OTR method. |
| title | Near-Infrared noise in intense electron bunches |
| topic | Accelerator Physics |
| url | https://arxiv.org/abs/2412.13482 |