Design of precision alignment of compact linear colliders accelerating structures

Master's thesis

Jouni Huopana

Research output: ThesisMaster's thesisTheses

Abstract

This thesis evaluates different assembly methods for particle accelerator called Compact Linear Colliders (CLIC)accelerating components. This work focuses on the definition of a strategy and mechanical design for the assembly of four quadrants in radial and longitudinal direction. The study takes into account the constraints specified by the various aspects of the physics involved in the application of such accelerating structures. The possible deformations due to a kinematic or elastic assembly and its influence on the final accuracy are calculated. Also the work considers the effect of a moderate temperature rise due to the steady state heating during machine operation and other loads due to the function of the machine. Accelerating structures must be aligned around the beam axis with a transversal accuracy of +/-0.003 mm and longitudinal accuracy of +/-0.01 mm over the length of a single module. This requirement includes the accuracy of the parts to be manufactured and the precision of the assembly of the various components. There were three main assemblies types studied; pin assembly, sphere assembly and averaging shape assembly. A program was written to compare the different methods with respect to the mechanical differences and manufacturing tolerances. In addition, the effects of different kind of loads affecting the structures were studied via FEM-programs. These results were then used to compare and evaluate the different mechanical configurations mechanical behavior and the effects on the final results. The best assembly method can be chosen by using these comparing results. The results
indicated that with the averaging shapes it is possible to exploit the elastic behavior of the structure to achieve the final assembly accuracy. This accuracy is also acceptable for the accelerating structures.
Original languageEnglish
QualificationMaster Degree
Awarding Institution
  • University of Oulu
Supervisors/Advisors
  • Sjölind, Stig-Göran, Supervisor, External person
Award date31 Aug 2007
Place of PublicationOulu
Publisher
Publication statusPublished - 2007
MoE publication typeG2 Master's thesis, polytechnic Master's thesis

Fingerprint

Colliding beam accelerators
Particle accelerators
Kinematics
Physics
Finite element method
Heating

Keywords

  • assembly techniques
  • FEM-simulations
  • high presicion mechanics

Cite this

@phdthesis{9c5b643aed4a419eb2012f2bccf2260c,
title = "Design of precision alignment of compact linear colliders accelerating structures: Master's thesis",
abstract = "This thesis evaluates different assembly methods for particle accelerator called Compact Linear Colliders (CLIC)accelerating components. This work focuses on the definition of a strategy and mechanical design for the assembly of four quadrants in radial and longitudinal direction. The study takes into account the constraints specified by the various aspects of the physics involved in the application of such accelerating structures. The possible deformations due to a kinematic or elastic assembly and its influence on the final accuracy are calculated. Also the work considers the effect of a moderate temperature rise due to the steady state heating during machine operation and other loads due to the function of the machine. Accelerating structures must be aligned around the beam axis with a transversal accuracy of +/-0.003 mm and longitudinal accuracy of +/-0.01 mm over the length of a single module. This requirement includes the accuracy of the parts to be manufactured and the precision of the assembly of the various components. There were three main assemblies types studied; pin assembly, sphere assembly and averaging shape assembly. A program was written to compare the different methods with respect to the mechanical differences and manufacturing tolerances. In addition, the effects of different kind of loads affecting the structures were studied via FEM-programs. These results were then used to compare and evaluate the different mechanical configurations mechanical behavior and the effects on the final results. The best assembly method can be chosen by using these comparing results. The resultsindicated that with the averaging shapes it is possible to exploit the elastic behavior of the structure to achieve the final assembly accuracy. This accuracy is also acceptable for the accelerating structures.",
keywords = "assembly techniques, FEM-simulations, high presicion mechanics",
author = "Jouni Huopana",
note = "TK606 diplomity{\"o} 75 p. + app. 14 p.",
year = "2007",
language = "English",
publisher = "University of Oulu",
address = "Finland",
school = "University of Oulu",

}

Design of precision alignment of compact linear colliders accelerating structures : Master's thesis. / Huopana, Jouni.

Oulu : University of Oulu, 2007. 89 p.

Research output: ThesisMaster's thesisTheses

TY - THES

T1 - Design of precision alignment of compact linear colliders accelerating structures

T2 - Master's thesis

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N1 - TK606 diplomityö 75 p. + app. 14 p.

PY - 2007

Y1 - 2007

N2 - This thesis evaluates different assembly methods for particle accelerator called Compact Linear Colliders (CLIC)accelerating components. This work focuses on the definition of a strategy and mechanical design for the assembly of four quadrants in radial and longitudinal direction. The study takes into account the constraints specified by the various aspects of the physics involved in the application of such accelerating structures. The possible deformations due to a kinematic or elastic assembly and its influence on the final accuracy are calculated. Also the work considers the effect of a moderate temperature rise due to the steady state heating during machine operation and other loads due to the function of the machine. Accelerating structures must be aligned around the beam axis with a transversal accuracy of +/-0.003 mm and longitudinal accuracy of +/-0.01 mm over the length of a single module. This requirement includes the accuracy of the parts to be manufactured and the precision of the assembly of the various components. There were three main assemblies types studied; pin assembly, sphere assembly and averaging shape assembly. A program was written to compare the different methods with respect to the mechanical differences and manufacturing tolerances. In addition, the effects of different kind of loads affecting the structures were studied via FEM-programs. These results were then used to compare and evaluate the different mechanical configurations mechanical behavior and the effects on the final results. The best assembly method can be chosen by using these comparing results. The resultsindicated that with the averaging shapes it is possible to exploit the elastic behavior of the structure to achieve the final assembly accuracy. This accuracy is also acceptable for the accelerating structures.

AB - This thesis evaluates different assembly methods for particle accelerator called Compact Linear Colliders (CLIC)accelerating components. This work focuses on the definition of a strategy and mechanical design for the assembly of four quadrants in radial and longitudinal direction. The study takes into account the constraints specified by the various aspects of the physics involved in the application of such accelerating structures. The possible deformations due to a kinematic or elastic assembly and its influence on the final accuracy are calculated. Also the work considers the effect of a moderate temperature rise due to the steady state heating during machine operation and other loads due to the function of the machine. Accelerating structures must be aligned around the beam axis with a transversal accuracy of +/-0.003 mm and longitudinal accuracy of +/-0.01 mm over the length of a single module. This requirement includes the accuracy of the parts to be manufactured and the precision of the assembly of the various components. There were three main assemblies types studied; pin assembly, sphere assembly and averaging shape assembly. A program was written to compare the different methods with respect to the mechanical differences and manufacturing tolerances. In addition, the effects of different kind of loads affecting the structures were studied via FEM-programs. These results were then used to compare and evaluate the different mechanical configurations mechanical behavior and the effects on the final results. The best assembly method can be chosen by using these comparing results. The resultsindicated that with the averaging shapes it is possible to exploit the elastic behavior of the structure to achieve the final assembly accuracy. This accuracy is also acceptable for the accelerating structures.

KW - assembly techniques

KW - FEM-simulations

KW - high presicion mechanics

M3 - Master's thesis

PB - University of Oulu

CY - Oulu

ER -