Determination of Maximum Repetition Rate of a Corrugated-Waveguide-Based Wakefield Accelerator
Oct 25, 20215 pages
Published in:
- JACoW MEDSI2020 (2021) THIO02
Contribution to:
- Published: Oct 25, 2021
Citations per year
Abstract: (JACoW)
Thermal stresses generated due to the electromagnetic (EM) heating is a defining phenomenon in the mechanical design of the miniature copper-based corrugated wakefield accelerator (CWA). We investigate the effect of the EM heating due to the high repetition rate electron bunches traveling through a corrugated tube with 1-mm-inner-radius. The steady-state thermal analysis is coupled with computational fluid dynamics, and structural mechanics to determine the thermal effect on the operating conditions of CWA. It could carry a 10 nC drive bunch through the center of corrugated structure that generates a field gradient 100 Mv/m at 180 GHz, accelerating a trailing 0.3 nC witness bunch to 5 GeV. The wakefield produced by the traveling bunches can deposit about 600 W to 3000 W of energy on the inner wall of the device. Also, the instabilities in e-beam trajectories caused by thermal expansion, and the resulting stresses associated high-frequency repetition rate of 10 kHz to 50 kHz are the main concern for the waveguide. Tensile-yield failure due to moderate heating on the surface of the <200 micrometer wide trough regions of the corrugated tube may lead to arcing and loss of the wakefield.- GUI
- electron
- wakefield
- simulation
- radiation
References(6)
Figures(0)
- [1]
- [2]
- [3]
- [4]
- [5]
- [6]