Published October 2011
| Version v1
Journal article
Simulation of higher order modes and loss factor of a new type of 500-MHz single cell superconducting cavity at SSRF
Creators
- 1. Shanghai Key Lab of Cryogenics and Superconducting RF Technology (China)
- 2. Graduate University of Chinese Academy of Sciences, Beijing (China)
- 3. Shanghai Institute of Applied Physics, Chinese Academy of Sciences (China)
Description
In this paper,higher order modes (HOMs) and loss factor of a new type of 500-MHz superconducting cavity is studied,by simulating its broadband HOMs damping at different positions of the ferrite HOM-absorber and different lengths of the ferrite. The results show that the impedance and Q value of the HOMs in transverse and longitudinal modes could be greatly reduced. The HOM longitudinal impedance could be damped to meet the requirement of SSRF beam instability threshold. The calculated loss factor of the new SC cavity was compared with cavities at SSRF. It was estimated that the HOM absorber could absorb a total power of 3.16 kW at 4-mm beam bunch length. (authors)
Additional details
Publishing Information
- Journal Title
- Nuclear Science and Techniques
- Journal Volume
- 22
- Journal Issue
- 5
- Journal Page Range
- p. 257-260
- ISSN
- 1001-8042
INIS
- Country of Publication
- China
- Country of Input or Organization
- China
- INIS RN
- 45021067
- Subject category
- S43: PARTICLE ACCELERATORS;
- Descriptors DEI
- BEAM BUNCHERS; BEAM BUNCHING; CHINA; DAMPING; FERRITES; IMPEDANCE; INSTABILITY; LENGTH; LOSSES; MHZ RANGE 100-1000; Q-VALUE; SIMULATION; SUPERCONDUCTING CAVITY RESONATORS; SYNCHROTRON RADIATION SOURCES
- Descriptors DEC
- ASIA; BEAM DYNAMICS; CAVITY RESONATORS; DIMENSIONS; DYNAMICS; ELECTRONIC EQUIPMENT; ENERGY; EQUIPMENT; FERRIMAGNETIC MATERIALS; FREQUENCY RANGE; IRON COMPOUNDS; MAGNETIC MATERIALS; MATERIALS; MECHANICS; MHZ RANGE; OXYGEN COMPOUNDS; RADIATION SOURCES; RESONATORS; SUPERCONDUCTING DEVICES; TRANSITION ELEMENT COMPOUNDS
Optional Information
- Notes
- 7 figs., 5 refs.