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Description
During the injection process at the Canadian Light Source (CLS), approximately one third of the electron beam is lost from the Booster Ring (BR) to the Storage Ring (SR) at controlled locations in the Booster-to-Storage Ring (BTS) transfer line. In 2021, the BTS was upgraded to allow the facility to run in Top-Up mode. Included in this upgrade was the installation of new diagnostic CCD cameras in the transfer line with the intent to use them to measure beam properties and better understand the electron beam extracted from the BR.
This paper presents emittance measurements, using these diagnostic cameras, of the electron beam extracted from the BR. Using two quadrupoles, one focusing and one defocusing, quadrupole scan measurements were performed to measure both the horizontal and vertical emittances in the BTS. An estimated emittance in the BR was also measured using a combination of images of the synchrotron radiation produced by the BR and betatron functions, dispersion, and energy spread values obtained from simulations. These emittances measured were then compared to expected theoretical emittances of the BR from synchrotron radiation integrals.
Funding Agency
The Canadian Light Source receives funding from CFI, NSERC, the University of Saskatchewan, CIHR, and the Government of Saskatchewan
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