Advanced Control of Electron Beams: Tailoring X-ray Production with Programmable Laser Shaping
Fuente:
arXiv
Saved in:
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2026
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866908891573387264 |
|---|---|
| author | Hirschman, Jack Lemons, Randy Zhang, Hao Obaid, Razib Robles, River Franz, Paris Mencer, Benjamin Neveu, Nicole Britton, Matthew Cesar, David Sudar, Nicolas Zhang, Zhen Baker, Justin Pennington, Chad Borne, Kurtis Driver, Taran Larsen, Kirk A. Guo, Veronica Ding, Yuantao Just, Gabriel Zhou, Feng Cryan, James Robinson, Joseph Coffee, Ryan Marinelli, Agostino Carbajo, Sergio |
| author_facet | Hirschman, Jack Lemons, Randy Zhang, Hao Obaid, Razib Robles, River Franz, Paris Mencer, Benjamin Neveu, Nicole Britton, Matthew Cesar, David Sudar, Nicolas Zhang, Zhen Baker, Justin Pennington, Chad Borne, Kurtis Driver, Taran Larsen, Kirk A. Guo, Veronica Ding, Yuantao Just, Gabriel Zhou, Feng Cryan, James Robinson, Joseph Coffee, Ryan Marinelli, Agostino Carbajo, Sergio |
| contents | Leveraging the full scientific capabilities of next-generation high-repetition-rate free-electron lasers requires programmable control over electron-beam properties at their source. The photoinjector drive laser defines the electron beam's initial six-dimensional phase-space distribution, yet has historically been limited to Gaussian or static flat-top profiles, with most manipulation occurring downstream. Here we demonstrate software-programmable ultraviolet pulse shaping at the LCLS-II photoinjector as a source-level actuator that complements traditional accelerator controls. Using a coupled architecture combining dispersion-controlled nonlinear frequency conversion with spatial-light-modulator spectral shaping, we generate user-defined temporal structures and observe their imprint on electron bunches through high-resolution time-domain diagnostics. Laser-imposed multi-peaked modulation persists through acceleration, magnetic compression, and undulator transport with shot-to-shot repeatability, producing clearly resolved current structure in the compressed beam. Variance-based reconstruction from transverse deflecting cavity measurements reveals structured X-ray emission profiles exhibiting temporal features consistent with the programmed laser waveform. By providing rapid, software-controlled reconfiguration of electron-beam initial conditions, this source-level control approach establishes a programmable upstream actuator for future adaptive optimization and autonomous facility operation at high-repetition-rate light sources. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2603_15996 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Advanced Control of Electron Beams: Tailoring X-ray Production with Programmable Laser Shaping Hirschman, Jack Lemons, Randy Zhang, Hao Obaid, Razib Robles, River Franz, Paris Mencer, Benjamin Neveu, Nicole Britton, Matthew Cesar, David Sudar, Nicolas Zhang, Zhen Baker, Justin Pennington, Chad Borne, Kurtis Driver, Taran Larsen, Kirk A. Guo, Veronica Ding, Yuantao Just, Gabriel Zhou, Feng Cryan, James Robinson, Joseph Coffee, Ryan Marinelli, Agostino Carbajo, Sergio Accelerator Physics Leveraging the full scientific capabilities of next-generation high-repetition-rate free-electron lasers requires programmable control over electron-beam properties at their source. The photoinjector drive laser defines the electron beam's initial six-dimensional phase-space distribution, yet has historically been limited to Gaussian or static flat-top profiles, with most manipulation occurring downstream. Here we demonstrate software-programmable ultraviolet pulse shaping at the LCLS-II photoinjector as a source-level actuator that complements traditional accelerator controls. Using a coupled architecture combining dispersion-controlled nonlinear frequency conversion with spatial-light-modulator spectral shaping, we generate user-defined temporal structures and observe their imprint on electron bunches through high-resolution time-domain diagnostics. Laser-imposed multi-peaked modulation persists through acceleration, magnetic compression, and undulator transport with shot-to-shot repeatability, producing clearly resolved current structure in the compressed beam. Variance-based reconstruction from transverse deflecting cavity measurements reveals structured X-ray emission profiles exhibiting temporal features consistent with the programmed laser waveform. By providing rapid, software-controlled reconfiguration of electron-beam initial conditions, this source-level control approach establishes a programmable upstream actuator for future adaptive optimization and autonomous facility operation at high-repetition-rate light sources. |
| title | Advanced Control of Electron Beams: Tailoring X-ray Production with Programmable Laser Shaping |
| topic | Accelerator Physics |
| url | https://arxiv.org/abs/2603.15996 |