Study of thermionic RF-gun phase-space dynamics and slice emittance under influence of external electromagnetic fields

• Main Authors: K. Kusoljariyakul, C. Thongbai
• Format: Journal
• Published: 2018
• Subjects: Physics and Astronomy
• Online Access: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=79958195510&origin=inward; http://cmuir.cmu.ac.th/jspui/handle/6653943832/50353
• Institution: Chiang Mai University

A high brightness electron source of ultra-small emittance and high-average current is one of the most important components for future accelerators. In a RF-electron-gun, rapid acceleration can reduce emittance growth due to space charge effects. However, twisting or rotation of the transverse phase-space distribution as a function of time is observed in thermionic RF-electron-guns and may set a lower limit to the projected beam emittance. Such rotation being caused by the variation of the RF field with time may be compensated by fields from a specific cavity. In this work, we study RF-electron-gun phase-space dynamics and emittance under the influence of external fields to evaluate the compensation schemes. © 2010 Elsevier B.V. Allrights reserved.