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Last modified by rangeadm on 2025/04/23 16:13
From version 1.1
edited by sendels
on 2019/05/16 12:46
Change comment: There is no comment for this version
To version 12.1
edited by cpassow
on 2020/09/22 14:04
Change comment: There is no comment for this version

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1 -XWiki.sendels
1 +XWiki.cpassow
Content
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1 -Here you can find a small python script (by (% class="twikiNewLink" %)[[MartinB>>url:http://hasfweb.desy.de/bin/edit/Setup/MartinB?topicparent=Setup.PartialCoherenceSimulation;nowysiwyg=0||rel="nofollow" shape="rect"]](%%)) implementing the partial coherence methode as described in Thomas Pfeifer, Yuhai Jiang, Stefan Düsterer, Robert Moshammer, and Joachim Ullrich, Partial-coherence method to model experimental free-electron laser pulse statistics, Opt. Lett. 35, 3441-3443 (2010); [[link to the paper~[~[image:url:http://hasfweb.desy.de/pub/TWiki/TWikiDocGraphics/external-link.gif~|~|width="13" height="12"~]~]>>url:http://dx.doi.org/10.1364/OL.35.003441||shape="rect"]]
2 -\\\\Simulations like this:
3 -[[image:url:http://hasfweb.desy.de/pub/Setup/PartialCoherenceSimulation/partia__coherence2.png||alt="partia__coherence2.png" width="631" height="481"]]
4 -\\can be easily created with the script ( the script can be downloaded in the attachment table below):
5 -[[image:url:http://hasfweb.desy.de/pub/Setup/PartialCoherenceSimulation/partia__coherence1.png||alt="partia__coherence1.png" width="812" height="984"]]
1 +In order to simulate the temporal and spectral distribution of SASE pulses there is an easy way based random fluctuations filtered spectrally and temporally.
2 +
3 +The only input parameters are the center wavelength, spectral bandwidth and the pulse duration.
4 +
5 +Below you can find a python implementation (by (% class="twikiNewLink" %)MartinB(%%)) of the partial coherence method as described in:
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7 +(% style="margin-left: 60.0px;" %)
8 +**Thomas Pfeifer et al. //Partial-coherence method to model experimental free-electron laser pulse statistics,// Opt. Lett. 35, 3441-3443 (2010);** [[link to the paper>>url:http://dx.doi.org/10.1364/OL.35.003441||shape="rect"]]
9 +
10 +==
11 +Examples: ==
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13 +[![[Binder>>doc:FLASHUSER.Binder]]([[https:~~/~~/mybinder.org/badge_logo.svg)~](https:~~/~~/mybinder.org/v2/git/https%3A%2F%2Fgitlab.desy.de%2Fchristopher.passow%2Fsase-pulses/master?filepath=simulating_SASE_pulses.ipynb>>url:https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/git/https%3A%2F%2Fgitlab.desy.de%2Fchristopher.passow%2Fsase-pulses/master?filepath=simulating_SASE_pulses.ipynb||rel="nofollow" shape="rect" class="external-link"]])
14 +
15 +//CentralEnergy=80 # in eV//
16 +
17 +//bandwidth=0.5 # bandwidth in %//
18 +
19 +//dt_FWHM=10, 30., 70  # FWHM of the temporal duration on average//
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24 + [[image:attach:2020-07-07 16_51_14-Window.png||height="250"]]
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26 +\\
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28 +[[image:attach:2020-07-07 16_53_22-Window.png||height="250"]]
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30 +[[image:attach:2020-07-07 16_52_27-Window.png||height="250"]]
31 +
32 +\\
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35 +
36 +[[attach:GenerateSASE.ipynb]]
37 +
38 +[[attach:GenerateSASE.py]]
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40 +\\
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48 +\\