| Paper |
Title |
Page |
TH4D1 |
Overview and Challenges of the Vacuum Systems of Diffraction Limited Storage Rings |
|
| |
- M.J. Grabski, E. Al-Dmour
MAX IV Laboratory, Lund University, Lund, Sweden
|
|
| |
Three diffraction limited storage rings are operational and over ten are in design or construction, several approaches were adapted for the design of their vacuum systems, with the majority have to manage common challenges to achieve the design parameters of those machines. Here we will present the various design approaches adapted by the various facilities together with the challenges and solutions deployed.
|
|
|
Slides TH4D1 [4.682 MB]
|
|
| Cite • |
reference for this paper using
※ BibTeX,
※ LaTeX,
※ Text/Word,
※ RIS,
※ EndNote (xml)
|
|
| |
TH4D2 |
An Ultra-high Vacuum, High-gradient RF Gun and Advanced Photocathode Studies |
|
| |
- R.K. Li, H.B. Chen, Y.C. Du, P.W. Huang, W.-H. Huang, J.R. Shi, C.-X. Tang, X.-Y. Zhang, L.M. Zheng
TUB, Beijing, People’s Republic of China
|
|
| |
Funding: Work supported by the National Key Research and Development Program of China No. 2022YFA1603400 and the Tsinghua University Initiative Scientific Research Program No. 20197050028, 20191081195.
Photoinjectors are critical in defining the beam brightness and lasing performance of linac-based light sources. To further improve photoinjectors, one of the promising R&D opportunities is to combine high acceleration gradient with advanced photocathodes that feature low MTE, high QE, and visible light excitation, but unfortunately stringent vacuum conditions. Here we report on developing a new type of high-gradient S-band photocathode rf gun that can achieve one order of magnitude improvement of the vacuum level at the cathode and thus utilize various advanced semiconductor photocathodes. This gun serves as a testbed for exploring high-gradient-compatible photocathodes and new paradigms for optimizing and operating photoinjectors that enhance future light sources.
|
|
|
|
Slides TH4D2 [10.709 MB]
|
|
| Cite • |
reference for this paper using
※ BibTeX,
※ LaTeX,
※ Text/Word,
※ RIS,
※ EndNote (xml)
|
|
| |
TH4D3 |
Status of Advanced Photocathodes for SRF Guns |
|
| |
- R. Xiang
HZDR, Dresden, Germany
|
|
| |
As well known, the quality of the photocathodes is critical for the stability and reliability of photo-injector operation. Especially for the superconducting rf guns, the photocathode is one of the most important parts. In last years, thanks to the developed photocathode technology, several SRF guns were successfully operated or tested for the beam generation at kHz-MHz repetition rate. In this review, the achievements as well as open questions for the cathode requirements of the reliable SRF gun operation will be reviewed, and the possible improvement from photocathodes point of view for the future application will be discussed.
|
|
|
|
Slides TH4D3 [2.727 MB]
|
|
| Cite • |
reference for this paper using
※ BibTeX,
※ LaTeX,
※ Text/Word,
※ RIS,
※ EndNote (xml)
|
|
| |