| Title |
Determination of Maximum Repetition Rate of a Corrugated-Waveguide-Based Wakefield Accelerator |
| Authors |
- K.J. Suthar, S.H. Lee, S. Sorsher, E. Trakhtenberg, G.J. Waldschmidt, A. Zholents
ANL, Lemont, Illinois, USA
- A.E. Siy
UW-Madison/PD, Madison, Wisconsin, USA
|
| Abstract |
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.
|
| Funding |
This work supported by Laboratory Directed Research and Development (LDRD) funding from Argonne, provided by the Director, Office of Science, of the U.S. DOE under contract DE-AC02-06CH11357. |
| Paper |
download THIO02.PDF [3.802 MB / 5 pages] |
| Slides |
download THIO02_TALK.PDF [16.639 MB] |
| Export |
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| Conference |
MEDSI2020 |
| Series |
Mechanical Engineering Design of Synchrotron Radiation Equipment and Instrumentation (11th) |
| Location |
Chicago, IL, USA |
| Date |
24-29 July 2021 |
| Publisher |
JACoW Publishing, Geneva, Switzerland |
| Editorial Board |
Yifei Jaski (ANL, Lemont, IL, USA); Patric Den Hartog (ANL, Lemont, IL, USA); Kelly Jaje (ANL, Lemont, IL, USA); Volker R.W. Schaa (GSI, Darmstadt, Germany) |
| Online ISBN |
978-3-95450-229-5 |
| Online ISSN |
2673-5520 |
| Received |
21 July 2021 |
| Accepted |
06 October 2021 |
| Issue Date |
27 October 2021 |
| DOI |
doi:10.18429/JACoW-MEDSI2020-THIO02 |
| Pages |
336-340 |
| Copyright |
 Published by JACoW Publishing under the terms of the Creative Commons Attribution 3.0 International license. Any further distribution of this work must maintain attribution to the author(s), the published article's title, publisher, and DOI. |
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