Beam Transmission Efficiency Measurement of the Injector System of the Canadian Light Source for the Top-up Mode of Operation
Date
2024-09-16
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
ORCID
0009-0002-5516-7089
Type
Thesis
Degree Level
Masters
Abstract
The beam transmission efficiency was measured in terms of charge through the CLS
accelerator complex to determine the performance of the injector system for top-up operation.
Propagation through the injection system incurs notable losses from bending
magnets, beam choppers along the way and the transition from 2856MHz to 500MHz
RF frequency at the injection point from the Linac-to-Booster transfer line (LTB) to
the booster. The present system only monitors the efficiency of the booster to storage
ring injection with two parametric current transformers (PCTs). In this experiment, the
transmission efficiencies between four key points in the Linac and LTB were measured
using fast current transformers (FCTs) along with the present system, which gives an
overview of the total transmission efficiency from a very close point of the electron gun to
the storage ring. The FCT signals were corrected for the loss attributed to the cable attenuation
by employing Fast Fourier analysis and determining the cables’ S21-parameter.
The charge calculation was improved by 3.3 − 7.5% with the corrected signals and the
overall efficiency was found to be 16% ± 1% for top-up injection mode.
Description
Keywords
CLS, Transmission Efficiency, Top-up Injection
Citation
Degree
Master of Science (M.Sc.)
Department
Physics and Engineering Physics
Program
Physics