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New noninvasive measurement method of optics parameters in a storage ring using bunch-by-bunch 3D beam position measurement data
- Source :
- Physical Review Accelerators and Beams, Vol 24, Iss 6, p 062802 (2021)
- Publication Year :
- 2021
- Publisher :
- American Physical Society (APS), 2021.
-
Abstract
- In order to improve machine performance, the optics parameters of the storage ring need to be measured accurately. The commonly used accelerator optics parameters, including momentum compaction factor and dispersion function, are key parameters that reflect the state of the machine. It is difficult to measure them with traditional methods during the user operation run. Based on a high-resolution bunch-by-bunch three-dimensional measurement system, a noninvasive measurement of momentum compaction factor and the dispersion function was performed at the Shanghai synchrotron radiation facility (SSRF). The dispersion function can be obtained purely from the direct observation results of the bunch-by bunch 3D position, based on the definition of the dispersion function during normal user operation run without perturbing the beam. The theoretical background and experimental results of the method are discussed in this paper. The measurement results are in good agreement with the design values.
- Subjects :
- Physics
Nuclear and High Energy Physics
Physics and Astronomy (miscellaneous)
business.industry
System of measurement
Measure (physics)
Synchrotron radiation
QC770-798
Surfaces and Interfaces
Momentum compaction
Optics
Position (vector)
Nuclear and particle physics. Atomic energy. Radioactivity
Dispersion (optics)
Physics::Accelerator Physics
business
Beam (structure)
Storage ring
Subjects
Details
- ISSN :
- 24699888
- Volume :
- 24
- Database :
- OpenAIRE
- Journal :
- Physical Review Accelerators and Beams
- Accession number :
- edsair.doi.dedup.....284998d02fd042ad419b0623de7aabdb