| Title |
An Investigation of Possible Non-Standard Photon Statistics in a Free-Electron Laser I: Experiment |
| Authors |
- J.-W. Park
University of Hawaii, Honolulu,, USA
- K.-J. Kim, R.R. Lindberg
ANL, Lemont, Illinois, USA
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| Abstract |
It was reported that the photon statistics of the seventh coherent spontaneous harmonic radiation of the MARK III FEL was sub-Poissonian [1], which concludes that Fano factor F (the ratio of photon number variance to the average photon number) is less than unity. Whether FEL light exhibits such non-standard behavior is an important issue; if it does, our understanding of the FEL needs to be radically modified. In this paper, we re-examine the analyses of experimental data in Ref. [1]. We find that the observed value of F could be explained within the standard FEL theory if one combines the detector dead time effect with photon clustering arising from the FEL gain. We propose an improved experiment for a more definitive measurement of the FEL photon statistics.
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| Footnotes & References |
[1] T. Chen and J.M. Madey, J. Phys. Rev. Lett. 86, 5906 (2001). |
| Funding |
Work supported by U.S. DOE, Office of Science, Office of BES, under Award No. DE-SC0018428. |
| Paper |
download TUP053.PDF [0.683 MB / 4 pages] |
| Poster |
download TUP053_POSTER.PDF [0.929 MB] |
| Export |
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| Conference |
FEL2019 |
| Series |
Free Electron Laser Conference (39th) |
| Location |
Hamburg, Germany |
| Date |
26-30 August 2019 |
| Publisher |
JACoW Publishing, Geneva, Switzerland |
| Editorial Board |
Volker R.W. Schaa (GSI, Darmstadt, Germany); Winfried Decking (DESY, Hamburg, Germany); Harald Sinn (EuXFEL, Schenefeld, Germany); Gianluca Geloni (EuXFEL, Schenefeld, Germany); Siegfried Schreiber (DESY, Hamburg, Germany); Michaela Marx (DESY, Hamburg, Germany) |
| Online ISBN |
978-3-95450-210-3 |
| Online ISSN |
"" |
| Received |
21 August 2019 |
| Accepted |
12 September 2019 |
| Issue Date |
05 November 2019 |
| DOI |
doi:10.18429/JACoW-FEL2019-TUP053 |
| Pages |
161-164 |
| 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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