| Paper |
Title |
Other Keywords |
Page |
| TUPOMS031 |
Fill Pattern for Reducing Transient Beam Loading and Ion-Trapping in the Diamond-II Storage Ring |
cavity, simulation, storage-ring, emittance |
1483 |
| |
- T. Olsson, H.C. Chao
DLS, Oxfordshire, United Kingdom
|
|
| |
The Diamond-II upgrade will replace the existing Diamond storage ring with a multibend achromat lattice providing higher brightness to the users by reducing the emittance and increasing the beam energy. The new storage ring will require a harmonic cavity that lengthens the bunches to increase the Touschek lifetime as well as mitigate instabilities and suppress the emittance blow up from intrabeam scattering. It is expected that the ring will have to operate with gaps in the fill pattern for ion-clearing, but that will lead to transient beam loading resulting in reduced bunch lengthening. The length and occurrence of the gaps therefore have to be determined as a trade-off between the requirements for transient beam loading and ion-trapping. This paper presents simulations of both effects for the Diamond-II storage ring to find an optimal fill pattern.
|
|
| DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IPAC2022-TUPOMS031
|
|
| About • |
Received ※ 07 June 2022 — Revised ※ 14 June 2022 — Accepted ※ 15 June 2022 — Issue date ※ 24 June 2022 |
| Cite • |
reference for this paper using
※ BibTeX,
※ LaTeX,
※ Text/Word,
※ RIS,
※ EndNote (xml)
|
|
| |
| WEOZGD1 |
Design of an LPA-Based First-Stage Injector for a Synchrotron Light Source |
electron, plasma, laser, simulation |
1639 |
| |
- X.Y. Shi, H.S. Xu
IHEP, Beijing, People’s Republic of China
|
|
| |
Study of plasma-based acceleration has been a frontier of accelerator community for decades. The beam performance obtained from a laser-plasma based accelerator (LPA) becomes higher and higher. Nowadays, a combination of LPAs and the conventional RF accelerators is a trend. One of the interesting directions to go is to replace a LINAC by an LPA as the first-stage injector of a synchrotron light source. In this paper, we present a physical design of a 500 MeV LPA-based first-stage injector for a synchrotron light source.
|
|
|
Slides WEOZGD1 [8.971 MB]
|
|
| DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IPAC2022-WEOZGD1
|
|
| About • |
Received ※ 15 June 2022 — Revised ※ 22 June 2022 — Accepted ※ 25 June 2022 — Issue date ※ 04 July 2022 |
| Cite • |
reference for this paper using
※ BibTeX,
※ LaTeX,
※ Text/Word,
※ RIS,
※ EndNote (xml)
|
|
| |
| WEPOPT024 |
Beam Loading Compensation of Standing Wave Linac with Off-Crest Acceleration |
positron, cavity, acceleration, klystron |
1893 |
| |
- M. Kuriki, S. Konno, Z.J. Liptak
HU/AdSM, Higashi-Hiroshima, Japan
- M.K. Fukuda, T. Omori, Y. Seimiya, J. Urakawa, K. Yokoya
KEK, Ibaraki, Japan
- S. Kashiwagi
Tohoku University, Research Center for Electron Photon Science, Sendai, Japan
- H. Tajino
HU ADSE, Hiroshima, Japan
- T. Takahashi
Hiroshima University, Graduate School of Science, Higashi-Hiroshima, Japan
|
|
| |
In E-Driven positron source of ILC, the generated positron is captured by a standing wave cavity. Because the deceleration capture method is employed, the positron is off-crest over the linac. Because the beam-loading is expected to be more than 1A in a multi-bunch format, the compensation is essential to obtain uniform intensity over the pulse. A conventional method for the compensation controlling the timing doesn’t work because RF and Beam induced field are in different phase. In this manuscript, we discuss the compensation with the off-crest acceleration case. A simple phase modulation on the input RF is a solution.
|
|
| DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IPAC2022-WEPOPT024
|
|
| About • |
Received ※ 20 May 2022 — Revised ※ 10 June 2022 — Accepted ※ 15 June 2022 — Issue date ※ 16 June 2022 |
| Cite • |
reference for this paper using
※ BibTeX,
※ LaTeX,
※ Text/Word,
※ RIS,
※ EndNote (xml)
|
|
| |