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| URL | https://doi.org/10.18429/JACoW-IPAC2026-TUO7T02 |
|---|---|
| Title | An ultra-high brightness cryogenic C-band RF gun for ultra-fast electron diffraction applications |
| Authors |
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| Abstract | The electron source at the MOTHRA beamline is a novel 0.5-cell cryogenic C-band photoinjector designed to operate at gradients up to 200 MV/m. This work reports on recent developments toward implementing a load lock and modular cathode backplane that enables the insertion and testing of next-generation photocathode materials and structures under high-field, cryogenic operating conditions. The combination of a high launch field, low intrinsic emittance cathodes, and cryogenic temperatures is expected to significantly increase the achievable beam brightness. We present the current design status, experimental progress, and performance measurements of the cryogenic photoinjector with the modified backplane. In addition, we discuss beam-dynamics optimization for operating the source in an ultrafast electron diffraction (UED) configuration, where the high gradient and low intrinsic emittance offer a promising pathway to MeV-scale UED with exceptional brightness and temporal resolution. |
| Paper | download: TUO7T02.pdf |
| Cite | BibTeX, LaTeX, Text/Word, RIS, EndNote |
| Conference | 17th International Particle Accelerator Conference |
| Series | |
| Location | Deauville, France |
| Date | 17-22 May 2026 |
| Publisher | JACoW Publishing, Geneva, Switzerland |
| Editorial Board | Editorial Board |
| Online ISBN | 978-3-95450-252-3 |
| Online ISSN | 2673-5350 |
| Received | 16 May 2026 |
| Revised | 21 May 2026 |
| Accepted | 22 May 2026 |
| Issued | 20 July 2026 |
| DOI | 10.18429/JACoW-IPAC2026-TUO7T02 |
| Pages | 1380-1384 |
| Copyright | Published by JACoW Publishing under the terms of the Creative Commons Attribution 4.0 license. Any further distribution of this work must maintain attribution to the author(s), the published article's title, publisher, and DOI. |