Version 1
: Received: 1 November 2024 / Approved: 1 November 2024 / Online: 4 November 2024 (03:49:29 CET)
How to cite:
Liu, Z.; Jia, H.; Xu, H.; Xu, J.; Huang, S. Adaptive Transverse Laser Shaping and Its Application in a Photocathode Gun. Preprints2024, 2024110044. https://doi.org/10.20944/preprints202411.0044.v1
Liu, Z.; Jia, H.; Xu, H.; Xu, J.; Huang, S. Adaptive Transverse Laser Shaping and Its Application in a Photocathode Gun. Preprints 2024, 2024110044. https://doi.org/10.20944/preprints202411.0044.v1
Liu, Z.; Jia, H.; Xu, H.; Xu, J.; Huang, S. Adaptive Transverse Laser Shaping and Its Application in a Photocathode Gun. Preprints2024, 2024110044. https://doi.org/10.20944/preprints202411.0044.v1
APA Style
Liu, Z., Jia, H., Xu, H., Xu, J., & Huang, S. (2024). Adaptive Transverse Laser Shaping and Its Application in a Photocathode Gun. Preprints. https://doi.org/10.20944/preprints202411.0044.v1
Chicago/Turabian Style
Liu, Z., Jinqiang Xu and Senlin Huang. 2024 "Adaptive Transverse Laser Shaping and Its Application in a Photocathode Gun" Preprints. https://doi.org/10.20944/preprints202411.0044.v1
Abstract
In a high-brightness photocathode gun, the non-uniformity in both the transverse distribution of the photocathode drive laser and the quantum efficiency (QE) map can lead to a degradation in electron beam quality. This study explores an adaptive transverse laser shaping technique and its application to improve the uniformity of the electrons emitted from the photocathode. By utilizing a spatial light modulator (SLM) with a feedback algorithm, we effectively control the drive laser distribution and achieve single-shot QE map measurement and QE compensation. The experiments conducted on the DC-SRF-II gun demonstrate a rapid and efficient QE measurement process, as well as a notable improvement in electron beam uniformity. Our study offers a promising approach for improving beam quality in accelerator applications that demand high-brightness electron sources.
Keywords
adaptive transverse laser shaping; photocathode gun; QE measurement; QE compensation
Subject
Physical Sciences, Optics and Photonics
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
