Development of an alignment mothod in a ultla-low field using a triple-wire excited CW current and using a wire excited pulsed current..

2016 Fiscal Year Final Research Report

• Project/Area Number: 26390123
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Quantum beam science
• Research Institution: Japan Synchrotron Radiation Research Institute
• Principal Investigator: Fukami Kenji 公益財団法人高輝度光科学研究センター, 加速器部門, 副主幹研究員 (60463311)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: Vibrating Wire Method / Ultimate Storage Ring / Alignment

Outline of Final Research Achievements

Using a test bench consisted of five multi-pole magnets with typical field gradients, we demonstrated an alignment of these magnets by introducing a vibrating wire method (VWM). The background fields, geomagnetism, remanent of another magnets, were canceled by counter dipole and quadrupole magnets. An overall statistical error of the system was estimated to be +-5um using a linearity controlled wire. In order to observe a drift of the magnetic center caused by temperature rise of a water-cooling magnet, and caused by a deformation after installation, etc., we developed a resonance-frequency tracked vibrating wire for a sustainable measurement. A precise alignment system with an accuracy of micro-meter order was completed for a ultra-low emittance ring.

Free Research Field

ビーム物理