| Title |
Proposed Research with Microbunched Beams at LEA |
| Authors |
- A.H. Lumpkin, W. Berg, J.C. Dooling, Y. Sun, K.P. Wootton
ANL, Lemont, Illinois, USA
- A.Y. Murokh
RadiaBeam, Santa Monica, California, USA
- P. Musumeci
UCLA, Los Angeles, California, USA
- D.W. Rule
Private Address, Silver Spring, USA
|
| Abstract |
One of the advantages of relativistic electron beams with microbunching at UV to visible wavelengths is the potential to generate coherent optical transition radiation (COTR) at a metal foil for diagnostics purposes. A significant microbunching fraction of at least 10% is expected for the case of a seed laser at 257.5 nm copropagating with a 343-MeV electron beam through a modulator undulator (3.2 cm period) at the Linac Extension Area (LEA) at Argonne National Laboratory. Diagnostic plans have been made for the COTR based-characterization of the microbunched beam size (~100 microns), divergence (sub-mrad), microbunching fraction, spectrum, and bunch length (sub-ps), as well as coalignment of the laser pulse and electron beam as previously described**. For that case, COTR enhancements over OTR of more than seven million were calculated, and we expect a similar enhancement of coherent optical diffraction radiation (CODR). Thus, we propose the modification of the microbunching diagnostics station to support initial (CODR) experiments with beam transit through an aperture in a metal screen or near a metal edge at the second screen position of the interferometer. We would explore whether the coherence function for CODR provides a complementary beam size monitor and whether COTR and CODR interferences from the two interferometer screens provide divergence and pointing information.
|
| Footnotes & References |
**A.H. Lumpkin and D.W. Rule, Proceedings of FEL19, WEP041, Hamburg, Germany, Aug. 2019, https://JaCoW.org. |
| Funding |
Work supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences under Contract No. DE-AC02-07CH11357. |
| Paper |
download TUPP19.PDF [0.743 MB / 5 pages] |
| Poster |
download TUPP19_POSTER.PDF [0.510 MB] |
| Export |
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| Conference |
IBIC2021 |
| Series |
International Beam Instrumentation Conference (10th) |
| Location |
Pohang, Rep. of Korea |
| Date |
24-28 May 2021 |
| Publisher |
JACoW Publishing, Geneva, Switzerland |
| Editorial Board |
Changbum Kim (PAL, Pohang, Rep. of Korea); Volker R. W. Schaa (GSI, Darmstadt, Germany); Dong-Eon Kim (PAL, Pohang, Rep. of Korea); Jaeyu Lee (PAL, Pohang, Rep. of Korea) |
| Online ISBN |
978-3-95450-230-1 |
| Online ISSN |
2673-5350 |
| Received |
08 September 2021 |
| Accepted |
17 September 2021 |
| Issue Date |
01 October 2021 |
| DOI |
doi:10.18429/JACoW-IBIC2021-TUPP19 |
| Pages |
244-248 |
| 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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