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Last modified by rangeadm on 2025/04/23 16:13
From version 15.1
edited by cpassow
on 2020/09/22 14:08
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To version 2.1
edited by sendels
on 2019/06/25 14:40
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1 -XWiki.cpassow
1 +XWiki.sendels
Content
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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.
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:
2 2  
3 -The only input parameters are the center wavelength, spectral bandwidth and the pulse duration.
4 +[[image:attach:partia__coherence2.png]]
4 4  
5 -Below you can find a python implementation (by (% class="twikiNewLink" %)MartinB(%%)) of the partial coherence method as described in:
6 -
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: ==
12 -
13 13  \\
14 14  
15 -
16 -
17 -{{view-file att--filename="badge_logo.svg" height="150"/}}
18 -
19 19  \\
20 20  
21 -\\
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23 -\\
11 +
12 +\\can be easily created with the script ( the script can be downloaded in the attachment table below):
24 24  
25 -//CentralEnergy=80 # in eV//
26 -
27 -//bandwidth=0.5 # bandwidth in %//
28 -
29 -//dt_FWHM=10, 30., 70  # FWHM of the temporal duration on average//
30 -
31 -
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33 -
34 - [[image:attach:2020-07-07 16_51_14-Window.png||height="250"]]
35 -
36 36  \\
37 37  
38 -[[image:attach:2020-07-07 16_53_22-Window.png||height="250"]]
39 -
40 -[[image:attach:2020-07-07 16_52_27-Window.png||height="250"]]
41 -
42 42  \\
43 43  
44 44  \\
45 45  
46 -[[attach:GenerateSASE.ipynb]]
47 -
48 -[[attach:GenerateSASE.py]]
49 -
50 50  \\
51 51  
52 -\\
22 +[[image:attach:partia__coherence1.png]]
53 53  
54 54  \\
55 55  
56 -\\
26 +[[attach:SASEPulseGenV2.ipynb]]
57 57  
58 -\\
28 +Jupyter Notebook