Study of the Superconducting Medium Beta Cavity of the European Spallation Source
(2020)- Abstract
- The thesis explains the design, fabrication, vertical test, higher order mode (HOM) and field emission study of the ESS superconducting medium beta (MB) cavity. The ESS MB cavity is a 6-cell elliptical cavity. The main criteria for a multicell elliptical cavity design are explained. The multicell elliptical cavity fabrication process is discussed. The vertical test results of the MB cavity are explained.
The MB cavity HOM is studied and the effect of mechanical errors on a specific HOM frequency deviation through a systematic approach is explained. The HOM measurement results are explained, furthermore searching of a specific HOM, which specified as the dangerous HOM.
The field emission dynamics of the MB cavity are studied... (More) - The thesis explains the design, fabrication, vertical test, higher order mode (HOM) and field emission study of the ESS superconducting medium beta (MB) cavity. The ESS MB cavity is a 6-cell elliptical cavity. The main criteria for a multicell elliptical cavity design are explained. The multicell elliptical cavity fabrication process is discussed. The vertical test results of the MB cavity are explained.
The MB cavity HOM is studied and the effect of mechanical errors on a specific HOM frequency deviation through a systematic approach is explained. The HOM measurement results are explained, furthermore searching of a specific HOM, which specified as the dangerous HOM.
The field emission dynamics of the MB cavity are studied through CST electron tracking. The electron tracking results are post-processed to count the number of impact electrons versus their impact energy.
(Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/9abfc7ad-adf2-4e03-9a93-176d7671239f
- author
- Pirani, Saeid LU
- supervisor
- opponent
-
- Professor Bousson, Sebastien, French National Centre for Scientific Research, Paris, France
- organization
- publishing date
- 2020-03-02
- type
- Thesis
- publication status
- published
- subject
- keywords
- SRF elliptical cavity, higher order mode, Qext, field emission, elliptical cavity design, vertical test, Fysicumarkivet A:2020:Pirani
- pages
- 161 pages
- publisher
- Lund University, Faculty of Science
- defense location
- Lecture hall Rydberg (Rydbergsalen), Fysicum, Professorsgatan 1, Lund
- defense date
- 2020-03-27 13:00:00
- ISBN
- 978-91-7895-456-8
- 978-91-7895-457-5
- language
- English
- LU publication?
- yes
- id
- 9abfc7ad-adf2-4e03-9a93-176d7671239f
- date added to LUP
- 2020-03-03 14:26:54
- date last changed
- 2020-12-03 09:04:06
@phdthesis{9abfc7ad-adf2-4e03-9a93-176d7671239f, abstract = {{The thesis explains the design, fabrication, vertical test, higher order mode (HOM) and field emission study of the ESS superconducting medium beta (MB) cavity. The ESS MB cavity is a 6-cell elliptical cavity. The main criteria for a multicell elliptical cavity design are explained. The multicell elliptical cavity fabrication process is discussed. The vertical test results of the MB cavity are explained. <br/>The MB cavity HOM is studied and the effect of mechanical errors on a specific HOM frequency deviation through a systematic approach is explained. The HOM measurement results are explained, furthermore searching of a specific HOM, which specified as the dangerous HOM. <br/>The field emission dynamics of the MB cavity are studied through CST electron tracking. The electron tracking results are post-processed to count the number of impact electrons versus their impact energy.<br/>}}, author = {{Pirani, Saeid}}, isbn = {{978-91-7895-456-8}}, keywords = {{SRF elliptical cavity; higher order mode; Qext; field emission; elliptical cavity design; vertical test; Fysicumarkivet A:2020:Pirani}}, language = {{eng}}, month = {{03}}, publisher = {{Lund University, Faculty of Science}}, school = {{Lund University}}, title = {{Study of the Superconducting Medium Beta Cavity of the European Spallation Source}}, url = {{https://lup.lub.lu.se/search/files/76828159/Saeid_Pirani_ALL.pdf}}, year = {{2020}}, }