Development of precise alignment method of superconducting accelerator cavities using accelerated beam

2016 Fiscal Year Final Research Report

• Project/Area Number: 26400300
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: High Energy Accelerator Research Organization
• Principal Investigator: HAYANO Hitoshi 大学共同利用機関法人高エネルギー加速器研究機構, 加速器研究施設, 教授 (00173055)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 加速器 / 超伝導加速空洞 / アライメント / 局在高調波モード

Outline of Final Research Achievements

In this research, we developed a method to calculate position information of superconducting acceleration cavity cooled to cryogenic temperature from higher harmonics induced by passing electron beam. Since the beam energy was low in the past experimental data using the actual beam, the cavity passing beam trajectory is complicatedly bent by the fringe field of the acceleration mode that was simultaneously present at that time. Starting from estimating such a complicated beam trajectory by calculation, the electrical center of the harmonic mode is known in advance by calculation, and the absolute value with the electrical center calculated by using the beam excited harmonic mode, we developed a method to calculate the cavity position by minimizing their deviations without contradiction.

Free Research Field

加速器科学