High Precision RF Measurement for ESS Cavity Parameters
(2015) EITM01 20141Department of Electrical and Information Technology
- Abstract
- In this thesis an investigation of how inaccuracies in measurements affects the field in the cavities used in the accelerator of the European Spallation Source (ESS). New ways to calculate the dynamic detuning and the quality factor of the cavities will also be investigated. This is done by setting up a simulation model in Simulink where the cavities are described by a differential equation. This model includes both the new and old analysis methods. It is found that different inaccuracies have very different effects on the cavity. Inaccuracies in quality factor and R/Q value affect the cavity control the most.
The new calculation method for the dynamic detuning is found to be better since it can show the dynamic detuning both during and... (More) - In this thesis an investigation of how inaccuracies in measurements affects the field in the cavities used in the accelerator of the European Spallation Source (ESS). New ways to calculate the dynamic detuning and the quality factor of the cavities will also be investigated. This is done by setting up a simulation model in Simulink where the cavities are described by a differential equation. This model includes both the new and old analysis methods. It is found that different inaccuracies have very different effects on the cavity. Inaccuracies in quality factor and R/Q value affect the cavity control the most.
The new calculation method for the dynamic detuning is found to be better since it can show the dynamic detuning both during and after the RF pulse and it is less dependent on inaccuracies. For QL the old measurement method is better since inaccuracies have less impact on it than on the new measurement method. (Less) - Popular Abstract (Swedish)
- European Spallation Source, ESS, är ett multinationellt forskningscentrum där man, med hjälp av elektriska fält, accelererar protoner upp till nästan ljusets hastighet och sedan låter dem kollidera med en bit volfram. Acceleratorn består av så kallade kaviteter och syftet med examensarbetet är att undersöka hur olika faktorer påverkar mätningar av kaviteternas parametrar och i sin tur hur styrningen påverkas. Nya mätmetoder kommer också att undersökas.
Please use this url to cite or link to this publication:
http://lup.lub.lu.se/student-papers/record/5048194
- author
- Jönsson, Philip LU
- supervisor
- organization
- course
- EITM01 20141
- year
- 2015
- type
- H2 - Master's Degree (Two Years)
- subject
- keywords
- Accelerator, Cavity, RF, Measurments, ESS
- report number
- LU/LTH-EIT 2015-425
- language
- English
- id
- 5048194
- date added to LUP
- 2015-02-17 14:00:28
- date last changed
- 2015-02-17 14:00:28
@misc{5048194, abstract = {{In this thesis an investigation of how inaccuracies in measurements affects the field in the cavities used in the accelerator of the European Spallation Source (ESS). New ways to calculate the dynamic detuning and the quality factor of the cavities will also be investigated. This is done by setting up a simulation model in Simulink where the cavities are described by a differential equation. This model includes both the new and old analysis methods. It is found that different inaccuracies have very different effects on the cavity. Inaccuracies in quality factor and R/Q value affect the cavity control the most. The new calculation method for the dynamic detuning is found to be better since it can show the dynamic detuning both during and after the RF pulse and it is less dependent on inaccuracies. For QL the old measurement method is better since inaccuracies have less impact on it than on the new measurement method.}}, author = {{Jönsson, Philip}}, language = {{eng}}, note = {{Student Paper}}, title = {{High Precision RF Measurement for ESS Cavity Parameters}}, year = {{2015}}, }