2011 Fiscal Year Final Research Report

Study of beam size blowup due to transverse bunch feedback noise.

Research Project

Project/Area Number	21604010
Research Category	Grant-in-Aid for Scientific Research (C)
Allocation Type	Single-year Grants
Section	一般
Research Field	Quantum beam science
Research Institution	High Energy Accelerator Research Organization
Principal Investigator	TOBIYAMA Makoto 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, 准教授 (60207595)
Co-Investigator(Kenkyū-buntansha)	OHMI Kazuhito 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 (10194292)
Research Collaborator	FOX John D SLAC National Accelerator Laboratory, 教授 ALESSANDRO Drago Istituto Nazionale di Fisca Nucleare Laboratori Nazionali di Frascati, 教授
Project Period (FY)	2009 – 2011
Keywords	加速器 / 計測工学 / ビーム制御 / フィードバック
Research Abstract	Effect of the noise from the bunch feedback system has been studied using KEKB collider. Degradation of luminosity and vertical beam size was measured quantitatively with the artificially injected noise. The results have been compared with the beam-beam simulation and have shown good agreements. Low noise feedback detector with good bunch isolation has also developed and tested using DAFNE collider. No degradation of luminosity with the feedback system was shown.