| Title |
Timing System for Multiple Accelerator Rings at KEK e⁺/e⁻ Injector LINAC |
| Authors |
- F. Miyahara, K. Furukawa, H. Kaji, M. Satoh, H. Sugimura
KEK, Ibaraki, Japan
- T. Kudo, S. Kusano
Mitsubishi Electric System & Service Co., Ltd, Tsukuba, Japan
- H.S. Saotome
Kanto Information Service (KIS), Accelerator Group, Ibaraki, Japan
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| Abstract |
The KEK e⁺/e⁻ injector linac is operated in multiple modes that can be switched every 20 ms for e⁺/e⁻ beam injection to five different accelerator rings, SuperKEKB High Energy Ring (HER), Photon Factory (PF) ring, PF-AR, positron damping ring (DR) and SuperKEKB Low Energy Ring (LER). The MRF event system which consists of event generators (EVG) and event receivers (EVR) is used to distribute event codes that correspond to beam modes and data buffer. The EVR generates various trigger timing signals depending on the event code. The data buffer incudes some important parameters such as HER/PDR injection RF bucket, setting currents of pulsed quad/steering magnets that enables multiple beam injection. The event system uses the linac main clock (114.2 MHz) which synchronized to HER/LER, but due to PF and PF-AR rings are not synchronized to the linac, an additional synchronization system is employed for those rings. We will describe the timing and synchronization system to fulfill multiple injections to independent rings and report status of the system.
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| Paper |
download THP19.PDF [0.400 MB / 3 pages] |
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| Conference |
PCaPAC2018 |
| Series |
International Workshop on Emerging Technologies and Scientific Facilities Controls (12th) |
| Location |
Hsinchu, Taiwan |
| Date |
16-19 October 2018 |
| Publisher |
JACoW Publishing, Geneva, Switzerland |
| Editorial Board |
Yung-Sen Cheng (NSRRC, Hsinchu, Taiwan); Volker RW Schaa (GSI, Darmstadt, Germany); Pei-Chen Chiu (NSRRC, Hsinchu, Taiwan); Lu Li (IMP/CAS, Lanzhou, China); Yung-Hui Liu (NSRRC, Hsinchu, Taiwan); Christine Petit-Jean-Genaz (CERN, Geneva, Switzerland) |
| Online ISBN |
978-3-95450-200-4 |
| Received |
17 October 2018 |
| Accepted |
17 October 2018 |
| Issue Date |
21 January 2019 |
| DOI |
doi:10.18429/JACoW-PCaPAC2018-THP19 |
| Copyright |
 Published by JACoW Publishing under the terms of the Creative Commons Attribution 3.0 International license. Any further distribution of this work must maintain attribution to the author(s), the published article's title, publisher, and DOI. |
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