3D multiphysics modeling of superconducting cavities with a massively parallel simulation suite
Abstract
Radiofrequency cavities based on superconducting technology are widely used in particle accelerators for various applications. The cavities usually have high quality factors and hence narrow bandwidths, so the field stability is sensitive to detuning from the Lorentz force and external loads, including vibrations and helium pressure variations. If not properly controlled, the detuning can result in a serious performance degradation of a superconducting accelerator, so an understanding of the underlying detuning mechanisms can be very helpful. Recent advances in the simulation suite ace3p have enabled realistic multiphysics characterization of such complex accelerator systems on supercomputers. In this paper, we present the new capabilities in ace3p for large-scale 3D multiphysics modeling of superconducting cavities, in particular, a parallel eigensolver for determining mechanical resonances, a parallel harmonic response solver to calculate the response of a cavity to external vibrations, and a numerical procedure to decompose mechanical loads, such as from the Lorentz force or piezoactuators, into the corresponding mechanical modes. These capabilities have been used to do an extensive rf-mechanical analysis of dressed TESLA-type superconducting cavities. Furthermore, the simulation results and their implications for the operational stability of the Linac Coherent Light Source-II are discussed.
- Authors:
- Publication Date:
- Research Org.:
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1398830
- Alternate Identifier(s):
- OSTI ID: 1408229
- Grant/Contract Number:
- AC02-76SF00515; AC02-05CH11231
- Resource Type:
- Published Article
- Journal Name:
- Physical Review Accelerators and Beams
- Additional Journal Information:
- Journal Name: Physical Review Accelerators and Beams Journal Volume: 20 Journal Issue: 10; Journal ID: ISSN 2469-9888
- Publisher:
- American Physical Society
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
Citation Formats
Kononenko, Oleksiy, Adolphsen, Chris, Li, Zenghai, Ng, Cho-Kuen, and Rivetta, Claudio. 3D multiphysics modeling of superconducting cavities with a massively parallel simulation suite. United States: N. p., 2017.
Web. doi:10.1103/PhysRevAccelBeams.20.102001.
Kononenko, Oleksiy, Adolphsen, Chris, Li, Zenghai, Ng, Cho-Kuen, & Rivetta, Claudio. 3D multiphysics modeling of superconducting cavities with a massively parallel simulation suite. United States. https://doi.org/10.1103/PhysRevAccelBeams.20.102001
Kononenko, Oleksiy, Adolphsen, Chris, Li, Zenghai, Ng, Cho-Kuen, and Rivetta, Claudio. Tue .
"3D multiphysics modeling of superconducting cavities with a massively parallel simulation suite". United States. https://doi.org/10.1103/PhysRevAccelBeams.20.102001.
@article{osti_1398830,
title = {3D multiphysics modeling of superconducting cavities with a massively parallel simulation suite},
author = {Kononenko, Oleksiy and Adolphsen, Chris and Li, Zenghai and Ng, Cho-Kuen and Rivetta, Claudio},
abstractNote = {Radiofrequency cavities based on superconducting technology are widely used in particle accelerators for various applications. The cavities usually have high quality factors and hence narrow bandwidths, so the field stability is sensitive to detuning from the Lorentz force and external loads, including vibrations and helium pressure variations. If not properly controlled, the detuning can result in a serious performance degradation of a superconducting accelerator, so an understanding of the underlying detuning mechanisms can be very helpful. Recent advances in the simulation suite ace3p have enabled realistic multiphysics characterization of such complex accelerator systems on supercomputers. In this paper, we present the new capabilities in ace3p for large-scale 3D multiphysics modeling of superconducting cavities, in particular, a parallel eigensolver for determining mechanical resonances, a parallel harmonic response solver to calculate the response of a cavity to external vibrations, and a numerical procedure to decompose mechanical loads, such as from the Lorentz force or piezoactuators, into the corresponding mechanical modes. These capabilities have been used to do an extensive rf-mechanical analysis of dressed TESLA-type superconducting cavities. Furthermore, the simulation results and their implications for the operational stability of the Linac Coherent Light Source-II are discussed.},
doi = {10.1103/PhysRevAccelBeams.20.102001},
journal = {Physical Review Accelerators and Beams},
number = 10,
volume = 20,
place = {United States},
year = {Tue Oct 10 00:00:00 EDT 2017},
month = {Tue Oct 10 00:00:00 EDT 2017}
}
https://doi.org/10.1103/PhysRevAccelBeams.20.102001
Search WorldCat to find libraries that may hold this journalWeb of Science
Works referenced in this record:
Microwave Electronics
journal, October 1946
- Slater, J. C.
- Reviews of Modern Physics, Vol. 18, Issue 4
The science and technology of superconducting cavities for accelerators
journal, March 2001
- Padamsee, Hasan
- Superconductor Science and Technology, Vol. 14, Issue 4
Superconducting TESLA cavities
journal, September 2000
- Aune, B.; Bandelmann, R.; Bloess, D.
- Physical Review Special Topics - Accelerators and Beams, Vol. 3, Issue 9
Mechanical properties of niobium radio-frequency cavities
journal, August 2015
- Ciovati, G.; Dhakal, P.; Matalevich, J.
- Materials Science and Engineering: A, Vol. 642
Ponderomotive instabilities and microphonics—a tutorial
journal, July 2006
- Delayen, J. R.
- Physica C: Superconductivity, Vol. 441, Issue 1-2