24–26 May 2017
Rayong Marriott Resort & Spa
Asia/Bangkok timezone

Beam Dynamics Simulation of Photocathode RF Electron Gun at the PBP-CMU Linac Laboratory

25 May 2017, 11:40
15m
Ballroom 1

Ballroom 1

Oral Accelerators and Synchrotron Radiations A9: Condensed Matter and Accelerators

Speaker

Ms Khachiwan Buakor (Chiang Mai University)

Description

Photocathode RF electron guns are widely used at many laboratories because of the high quality of the produced electron beams. By using a short-pulse laser to induce the photoemission process, the electrons are emitted with low energy spread. Moreover, the photocathode RF guns are not suffered from the electron backbombardment effect, which can cause the limited electron current density. In this study, we aim to develop the photocathode RF gun for the linac-based THz radiation source. The gun consists of a one and a half cell S-band RF cavities with a maximum electric field of about 60 MV/m at the full cell. We study the beam dynamics of electron traveling through the electromagnetic field inside the RF-gun by using the particle tracking program ASTRA. In addition, the laser and beam properties are optimized for low-emittance beam generation. The solenoid magnet is applied for beam focusing and emittance compensation. The proper solenoid magnet current is then investigated.

Primary authors

Ms Khachiwan Buakor (Chiang Mai University) Ms Sakhorn Rimjeam (Plasma and Beam Physics Research Facility, Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand)

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Paper