석 사 학 위 논 문
Thesis for Master degree

전자 맴돌이 공명 플라즈마 및 이온원 제작과 기본 특성연구
Study and Fabrication of Electron Cyclotron Resonance Plasma and Ion Source (ECRIS)

김 남 진
Nam-Jin Kim

물리학과 (플라즈마 실험 전공)
Department of Physics(Plasma Physics)

포항공과대학교 대학원
Pohang University of Science and Technology
Pohang, Korea

December 15, 1998

Approved by
Won Namkung
Major Advisor


 

                                                                                           ABSTRACT

The beam based alignment technique is applied to 2-GeV storage ring of the Pohang Light Source to measure the misalignment of quadrupole magnets and the offset of beam position monitors. A part of the excitation current of each quadrupole magnet is shunted through an electronic shunt circuit. Then the closed orbit receives a perturbation due to the current reduction. When this process is done to all quadrupoles individually, the misalignment of each quadrupole can be measured by taking the orbit difference. Also, by using two quadrupole magnets, we can measure the absolute offset of each BPM. This paper presents the method of beam based alignments and experimental results taken from 2-GeV PLS storage ring.