Continuous energy measurement of the electron beam in the storage ring of Diamond Light Source with resonant spin depolarization
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2019-12-10 |
| Journal | Physical Review Accelerators and Beams |
| Authors | Niki Vitoratou, P. Karataev, Guenther Rehm |
| Institutions | Diamond Light Source |
| Citations | 3 |
Abstract
Section titled āAbstractāElectron spin polarization occurs naturally in an electron storage ring due to spin-flip synchrotron radiation. The equilibrium polarization level that is achieved in Diamond Light Source was studied theoretically and experimentally. A novel approach that enables measurements during user operation is presented, compatible with beams of small vertical emittance in the range of pm rad. An array of four custom-made scintillation detectors has been installed around the beam pipe downstream from the collimators to capture a significant fraction of the lost particles and witness the depolarization process in the presence of a background loss rate. A new concept for detecting the depolarization resonance even when it coincides with higher-order betatron resonances was introduced. The momentum compaction factor was measured to be in very good agreement with the storage ring numerical model. In the end, we measured a good long-term stability of the beam energy during user operation time.
Tech Support
Section titled āTech SupportāOriginal Source
Section titled āOriginal SourceāReferences
Section titled āReferencesā- **** - Proceedings of the European Particle Accelerator Conference, Vienna, 2000
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