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5 **Collection of reference papers for FLASH1 and FLASH2 beamlines and instruments.**
6
7 **Last update:** {{date value="2024-09-18 00:00" format="yyyy-MM-dd"/}}
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9 **In case of multiple references, the most complete or up-to-date is 1st.**
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34 = FEL Accelerator Part =
35
36 1. W. Ackermann et al.,
37 //Operation of a Free Electron Laser in the Wavelength Range from the Extreme Ultraviolet to the Water Window//,
38 Nature Photonics **1**, 336-342 (2007);
39 [[http:~~/~~/dx.doi.org/10.1038/nphoton.2007.76>>url:http://dx.doi.org/10.1038/nphoton.2007.76||shape="rect"]]
40
41 **FLASH2 and other recent developments (such as FLASH2020+ upgrade pogram):**
42
43 1. Martin Beye, Markus Gühr, Ingmar Hartl, Elke Plönjes, Lucas Schaper, Siegfried Schreiber, Kai Tiedtke and Rolf Treusch,
44 //FLASH and the FLASH2020+ project - current status and upgrades for the free-electron laser in Hamburg at DESY//,
45 Eur. Phys. J. Plus **138**, 193 (2023);
46 [[https:~~/~~/doi.org/10.1140/epjp/s13360-023-03814-8>>url:https://doi.org/10.1140/epjp/s13360-023-03814-8]]
47 1. B. Faatz et al.,
48 //Simultaneous operation of two soft x-ray free-electron lasers driven by one linear accelerator//,
49 New J. Phys. **18**, 062002 (2016);
50 [[http:~~/~~/dx.doi.org/10.1088/1367-2630/18/6/062002>>url:http://dx.doi.org/10.1088/1367-2630/18/6/062002||shape="rect"]]
51 1. B. Faatz, M. Braune, O. Hensler, K. Honkavaara, R. Kammering, M. Kuhlmann, E. Ploenjes, J. Roensch-Schulenburg, E. Schneidmiller, S. Schreiber, K. Tiedtke, M. Tischer, R. Treusch, M. Vogt, W. Wurth, M. Yurkov and J. Zamella,
52 //The FLASH Facility: Advanced Options for FLASH2 and Future Perspectives//,
53 Appl. Sci. **7**, 1114 (2017);
54 [[http:~~/~~/dx.doi.org/10.3390/app7111114>>url:http://dx.doi.org/10.3390/app7111114||shape="rect"]]
55 1. J. Rönsch-Schulenburg, B. Faatz, K. Honkavaara, M. Kuhlmann, S. Schreiber, R. Treusch,
56 //Experience with Multi-Beam and Multi-Beamline FEL-Operation//,
57 Proc. IPAC17, Copenhagen, Denmark (2017),
58 J.Phys.: Conf. Ser. **874**, 012023 (2017);
59 [[http:~~/~~/dx.doi.org/10.1088/1742-6596/874/1/012023>>url:http://dx.doi.org/10.1088/1742-6596/874/1/012023||shape="rect"]]
60 1. S. Toleikis for the whole FLASH team,
61 //The FLASH facility - current status in 2018 and future upgrade plans//,
62 AIP Conf. Proc. **2054**, 030015 (2019);
63 [[http:~~/~~/dx.doi.org/10.1063/1.5084578>>url:http://dx.doi.org/10.1063/1.5084578||shape="rect"]]
64
65 **Afterburner Undulator at FLASH2:**
66
67 1. M. Tischer, H. Bienert, K. Götze, D. Meissner, P. Neumann, P. N'Gotta, T. Ramm, A. Schöps, P. Talkovski, S. Telawane,
68 //Development of an APPLE-III undulator for FLASH-2//,
69 Proc. SRI 2021, Online (2021), J. Phys.: Conf. Ser. **2380,** 012017 (2022);
70 [[https:~~/~~/dx.doi.org/10.1088/1742-6596/2380/1/012017>>url:https://dx.doi.org/10.1088/1742-6596/2380/1/012017]]
71 1. M. Mehrjoo, B. Faatz, G. Paraskaki, M. Tischer, P. Vagin,
72 //Expected Radiation Properties of the Harmonic Afterburner at FLASH2//,
73 Proc. FEL 2019, Hamburg, germany (2019), Paper WEP072 via JACoW;
74 [[https:~~/~~/dx.doi.org/10.18429/JACoW-FEL2019-WEP072>>url:https://dx.doi.org/10.18429/JACoW-FEL2019-WEP072]]
75 1. (((
76 M. Tischer, H. Bienert, K. Götze, P. Neumann, T. Ramm, A. Schöps, P. Talkovski, S. Telawane and P. Vagin,
77 //Construction and commissioning of an APPLE-III afterburner undulator as a prototype for radiators in the new seeding line of FLASH2020+,//
78 **in preparation for SRI2024**
79 )))
80
81 == FEL machine diagnostics ==
82
83 **a) Longitudinal FEL beam diagnostics (PolariX (1. / 2.) and LOLA (3.))**
84
85 1. B. Marchetti, A. Grudiev, P. Craievich, R. Assmann, H.‑H. Braun, N. Catalan Lasheras, F. Christie, R. D’Arcy, R. Fortunati, R. Ganter, P. González Caminal, M. Hoffmann, M. Huening, S. M. Jaster‑Merz, R. Jonas, F. Marcellini, D. Marx, G. McMonagle, J. Osterhoff, M. Pedrozzi, E. Prat Costa, S. Reiche, M. Reukauff, S. Schreiber, G. Tews, M. Vogt, S. Wesch & W. Wuensch,
86 //Experimental demonstration of novel beam characterization// //using a polarizable X‑band// //transverse deflection structure//,
87 Scientific Reports **11**,3560 (2021);
88 [[https:~~/~~/doi.org/10.1038/s41598-021-82687-2>>url:https://doi.org/10.1038/s41598-021-82687-2||shape="rect"]]
89 1. F. Christie, J. Rönsch-Schulenburg, M. Vogt​​​​​​,
90 //​ A PolariX TDS FOR THE FLASH2 BEAMLINE ​​​​//
91 ​​​[[https:~~/~~/accelconf.web.cern.ch/fel2019/papers/wep006.pdf>>url:https://accelconf.web.cern.ch/fel2019/papers/wep006.pdf]]
92 1. C. Behrens, N. Gerasimova, Ch. Gerth, B. Schmidt, E. A. Schneidmiller, S. Serkez, S. Wesch, and M. V. Yurkov,
93 Constraints on photon pulse duration from longitudinal electron beam diagnostics at a soft x-ray free-electron laser,
94 Phys. Rev. ST Accel. Beams **15**, 030707 (2012)
95 [[https:~~/~~/doi.org/10.1103/PhysRevSTAB.15.030707>>url:https://doi.org/10.1103/PhysRevSTAB.15.030707||shape="rect"]]
96
97 **b) Synchronization and Electron Bunch Arrvial time Monitor (BAM)**
98
99 1. S. Schulz, I. Grguraš, C. Behrens, H. Bromberger, J.T. Costello, M.K. Czwalinna, M. Felber, M.C. Hoffmann, M. Ilchen, H.Y. Liu, T. Mazza, M. Meyer, S. Pfeiffer, P. Prędki, S. Schefer, C. Schmidt, U. Wegner, H. Schlarb & A.L. Cavalieri,
100 //Femtosecond all-optical synchronization of an X-ray free-electron laser//,
101 Nature Communications **6**, 5938 (2015);
102 [[__http:~~/~~/dx.doi.org/10.1038/ncomms6938__>>url:http://dx.doi.org/10.1038/ncomms6938||shape="rect"]]
103 1. (((
104 (% class="pub-info" %)
105 A. Angelovski, et al.
106 //Evaluation of the cone-shaped pickup performance for low charge sub-10 fs arrival-time measurements at free electron laser facilities//
107 Phys. Rev. ST Accel. Beams **18**, 012801 (2015)
108 [[https:~~/~~/doi.org/10.1103/PhysRevSTAB.18.012801>>url:https://doi.org/10.1103/PhysRevSTAB.18.012801||shape="rect"]]
109 )))
110
111 ----
112
113 = User Facility/Beamline descriptions and Reviews =
114
115 1. K. Tiedtke, A. Azima, N. von Bargen, L. Bittner, S. Bonfigt, S. Düsterer, B. Faatz, U. Frühling, M. Gensch, Ch. Gerth, N. Guerassimova, U. Hahn, T. Hans, M. Hesse, K. Honkavaara, U. Jastrow, P. Juranic, S. Kapitzki, B. Keitel, T. Kracht, M. Kuhlmann, W. B. Li, M. Martins, T. Núñez, E. Plönjes, H. Redlin, E. L. Saldin, E. A. Schneidmiller, J. R. Schneider, S. Schreiber, N. Stojanovic, F. Tavella, S. Toleikis, R. Treusch, H. Weigelt, M. Wellhöfer, H. Wabnitz, M. V. Yurkov and J. Feldhaus,
116 //The soft X-ray free-electron laser FLASH at DESY: beamlines, diagnostics, and end stations//,
117 New J. Phys. **11**, 023029 (2009);
118 [[http:~~/~~/dx.doi.org/10.1088/1367-2630/11/2/023029>>url:http://dx.doi.org/10.1088/1367-2630/11/2/023029||shape="rect"]]
119
120 **Reviews**
121
122 1. Jörg Rossbach, Jochen R. Schneider, Wilfried Wurth,
123 //10 years of pioneering X-ray science at the Free-Electron Laser FLASH at DESY//,
124 Physics Reports **808**, 1-74 (2019);
125 [[https:~~/~~/doi.org/10.1016/j.physrep.2019.02.002>>url:https://doi.org/10.1016/j.physrep.2019.02.002||shape="rect"]]
126 1. Jochen R. Schneider,
127 //FLASH - from accelerator test facility to the first single-pass soft x-ray free-electron laser//,
128 J. Phys. B: At. Mol. Opt. Phys. **43**, 194001 (2010);
129 [[http:~~/~~/dx.doi.org/10.1088/0953-4075/43/19/194001>>url:http://dx.doi.org/10.1088/0953-4075/43/19/194001||shape="rect"]]
130 1. J. Feldhaus,
131 //FLASH - the first soft x-ray free electron laser (FEL) user facility//,
132 J. Phys. B: At. Mol. Opt. Phys. **43**, 194002 (2010);
133 [[http:~~/~~/dx.doi.org/10.1088/0953-4075/43/19/194002>>url:http://dx.doi.org/10.1088/0953-4075/43/19/194002||shape="rect"]]
134
135 == PG monochromator beamline ==
136
137 1. M. Martins, M. Wellhöfer, J.T. Hoeft, W. Wurth, J. Feldhaus, and R. Follath,
138 //Monochromator beamline for FLASH//,
139 Rev. Sci. Instrum. **77**, 115108 (2006);
140 [[http:~~/~~/dx.doi.org/10.1063/1.2364148>>url:http://dx.doi.org/10.1063/1.2364148||shape="rect"]]
141 1. N. Gerasimova, S. Dziarzhytski, J. Feldhaus,
142 //The monochromator beamline at FLASH: performance, capabilities and upgrade plans//,
143 Journal of Modern Optics **58**, 1480-1485 (2011); 
144 [[http:~~/~~/dx.doi.org/10.1080/09500340.2011.588344>>url:http://dx.doi.org/10.1080/09500340.2011.588344||shape="rect"]]
145
146 == THz Beamline ==
147
148 1. M. Gensch, L. Bittner, A. Chesnov, H. Delsim-Hashemi, M. Drescher, B. Faatz, J. Feldhaus, U. Fruehling, G.A. Geloni, Ch. Gerth, O. Grimm, U. Hahn, M. Hesse, S. Kapitzki, V. Kocharyan, O. Kozlov, E. Matyushevsky, N. Morozov, D. Petrov, E. Ploenjes, M. Roehling,  J. Rossbach, E.L. Saldin, B. Schmidt, P. Schmueser, E.A. Schneidmiller, E. Syresin, A. Willner and M.V. Yurkov,
149 //New infrared undulator beamline at FLASH//,
150 Infrared Phys. Technol. **51**, 423-425 (2008);
151 [[http:~~/~~/dx.doi.org/10.1016/j.infrared.2007.12.032>>url:http://dx.doi.org/10.1016/j.infrared.2007.12.032||shape="rect"]]
152 1. E. Zapolnova, , T. Golz, R. Pan, K. Klose, S. Schreiber and N. Stojanovic.
153 //THz pulse doubler at FLASH: double pulses for pump–probe experiments at X-ray FELs//,
154 J. Synchrotron Rad. **25**, 39-43 (2018);
155 [[https:~~/~~/doi.org/10.1107/S1600577517015442>>url:https://doi.org/10.1107/S1600577517015442||shape="rect"]]
156 1. R. Pan, E. Zapolnova, T. Golz, A.J. Krmpot, M.D. Rabasovic, J. Petrovic, V. Asgekar, B. Faatz, F. Tavella, A. Perucchi, S. Kovalev, B. Green, G. Geloni, T. Tanikawa, M. Yurkov, E. Schneidmiller, M. Gensch and N. Stojanovic,
157 //Photon diagnostics at the FLASH THz beamline//,
158 J. Synchrotron Rad. **26**, 700-707 (2019);
159 [[https:~~/~~/doi.org/10.1107/S1600577519003412>>url:https://doi.org/10.1107/S1600577519003412||shape="rect"]]
160
161 == CAMP chamber and BL1 (after 2014) ==
162
163 1. (((
164 Benjamin Erk, Jan P. Müller, Cédric Bomme, Rebecca Boll, Günter Brenner, Henry Chapman, Jonathan Correa, Stefan Düsterer, Siarhei Dziarzhytski, Stefan Eisebitt, Heinz Graafsma, Sören Grunewald, Lars Gumprecht, Robert Hartmann, Günter Hauser, Barbara Keitel, Clemens von Korff Schmising, Marion Kuhlmann, Bastian Manschwetus, Laurent Mercadier, Erland Müller, Christopher Passow, Elke Plönjes, Daniel Ramm, Dimitrios Rompotis, Artem Rudenko, Daniela Rupp, Mario Sauppe, Frank Siewert, Dieter Schlosser, Lothar Strüder, Angad Swiderski, Simone Techert, Kai Tiedtke, Thomas Tilp, Rolf Treusch, Ilme Schlichting, Joachim Ullrich, Robert Moshammer, Thomas Möller and Daniel Rolles,
165 //CAMP@FLASH: an end-station for imaging, electron- and ion-spectroscopy, and pump–probe experiments at the FLASH free-electron laser,//
166
167 J. Synchrotron Rad. **25**(5), 1529 - 1540 (2018)
168 [[http:~~/~~/dx.doi.org/10.1107/S1600577518008585>>url:http://dx.doi.org/10.1107/S1600577518008585||shape="rect"]]
169 )))
170 1. (((
171 {{expand title="LCLS CAMP and pnCCD reference"}}
172 Lothar Strüder, Sascha Epp, DanielRolles, Robert Hartmann, Peter Holl, Gerhard Lutz, Heike Soltau, Rouven Eckart, Christian Reich, Klaus Heinzinger, Christian Thamm, Artem Rudenko, Faton Krasniqi, Kai-Uwe Kühnel, Christian Bauer, Claus-Dieter Schröter, Robert Moshammer, Simone Techert, Danilo Miessner, Matteo Porro, Olaf Hälker, Norbert Meidinger, Nils Kimmel, Robert Andritschke, Florian Schopper, Georg Weidenspointner, Alexander Ziegler, Daniel Pietschner, Sven Herrmann, Ullrich Pietsch, Albert Walenta, Wolfram Leitenberger, Christoph Bostedt, Thomas Möller, Daniela Rupp, Marcus Adolph, Heinz Graafsma, Helmut Hirsemann, Klaus Gärtner, Rainer Richter, Lutz Foucar, Robert L. Shoeman, Ilme Schlichting, Joachim Ullrich,
173 //Large-format, high-speed, X-ray pnCCDs combined with electron and ion imaging spectrometers in a multipurpose chamber for experiments at 4th generation light sources//,
174 Nucl. Instrum. Methods A **614**, 483–496 (2010);
175 [[http:~~/~~/dx.doi.org/10.1016/j.nima.2009.12.053>>url:http://dx.doi.org/10.1016/j.nima.2009.12.053||shape="rect"]]
176 {{/expand}}
177 )))
178
179 == Reaction Microscope (ReMi) at FL26 ==
180
181 1. Georg Schmid, Kirsten Schnorr, Sven Augustin, Severin Meister, Hannes Lindenblatt, Florian Trost, Yifan Liu, Markus Braune, Rolf Treusch, Claus Dieter Schröter, Thomas Pfeifer and Robert Moshammer,
182 //Reaction Microscope Endstation at FLASH2//,
183 J. Synchrotron Rad. **26** (2019);
184 [[https:~~/~~/doi.org/10.1107/S1600577519002236>>url:https://doi.org/10.1107/S1600577519002236||shape="rect"]]
185 1. Severin Meister, Hannes Lindenblatt, Florian Trost, Kirsten Schnorr, Sven Augustin, Markus Braune, Rolf Treusch, Thomas Pfeifer, Robert Moshammer,
186 Atomic, Molecular and Cluster Science with the Reaction Microscope Endstation at FLASH2,
187 Appl. Sci. **10**, 2953 (2020);
188 [[https:~~/~~/doi.org/10.3390/app10082>>url:https://doi.org/10.3390/app10082||shape="rect"]]
189
190 == HEXTOF momentum microscope (mostly) at PG2 ==
191
192 1. D. Kutnyakhov, R.P. Xian, M. Dendzik, M. Heber, F. Pressacco, S.Y.  Agustsson, L. Wenthaus, H. Meyer, S. Gieschen, G. Mercurio, A. Benz, K. Bühlman, S. Däster, R. Gort, D. Curcio, K. Volckaert, M. Bianchi, Ch. Sanders, J A. Miwa, S. Ulstrup, A. Oelsner, C. Tusche, Y.-J. Chen, D. Vasilyev, K. Medjanik, G. Brenner, S. Dziarzhytski, H. Redlin, B. Manschwetus, S. Dong, J. Hauer, L. Rettig, F. Diekmann, K. Rossnagel, J. Demsar, H.-J. Elmers, Ph. Hofmann, R. Ernstorfer, G. Schönhense, Y. Acremann, and W. Wurth,
193 //Time- and momentum-resolved photoemission studies using time-of-flight momentum microscopy at a free-electron laser//,
194 Rev. Sci. Instrum. **91**, 013109 (2020);
195 [[https:~~/~~/doi.org/10.1063/1.5118777>>url:https://doi.org/10.1063/1.5118777||shape="rect"]]
196 1. (% style="color:#222222" %)Xian, R.P., Acremann, Y., Agustsson, S.Y., , M. Dendzik, K. Bühlmann, D. Curcio, D. Kutnyakhov, F. Pressacco, M. Heber, S. Dong, T. Pincelli, J. Demsar, W. Wurth, Ph. Hofmann, M. Wolf, M. Scheidgen, L. Rettig and R. Ernstorfer, (% style="letter-spacing:0.0px" %)//An open-source, end-to-end workflow for multidimensional photoemission spectroscopy//. (%%)//Sci Data//(% style="color:#222222" %) (%%)**7, **(% style="color:#222222" %)442 (2020). [[https:~~/~~/doi.org/10.1038/s41597-020-00769-8>>url:https://doi.org/10.1038/s41597-020-00769-8||shape="rect"]]
197
198 == MULTIP chamber ==
199
200 (% style="margin-left: 30.0px;" %)
201 Example experiments (on molecules, clusters and liquid jets) carried in the MULTIP chamber:
202
203 1. J.D. Koralek, J.B. Kim, P. Brůža, C.B. Curry, Z. Chen, H.A. Bechtel, A.A. Cordones, P. Sperling, S. Toleikis, J.F. Kern, S.P. Moeller, S.H. Glenzer, and D.P. DePonte,
204 //Generation and characterization of ultrathin free-flowing liquid sheets//,
205 Nature Comm. **9**, 1353 (2018);
206 [[http:~~/~~/dx.doi.org/10.1038/s41467-018-03696-w>>url:http://dx.doi.org/10.1038/s41467-018-03696-w||shape="rect"]]
207 1. (((
208 U. Zastrau, C. Rödel, M. Nakatsutsumi, T. Feigl, K. Appel, B. Chen, T. Döppner, T. Fennel, T. Fiedler, L.B. Fletcher, E. Förster, E. Gamboa, D.O. Gericke, S. Göde, C. Grote-Fortmann, V. Hilbert, L. Kazak, T. Laarmann, H.J. Lee, P. Mabey, F. Martinez, K.-H. Meiwes-Broer, H. Pauer, M. Perske, A. Przystawik, S. Roling, S. Skruszewicz, M. Shihab, J. Tiggesbäumker, S. Toleikis, M. Wünsche, H. Zacharias, S.H. Glenzer, and G. Gregori,
209 //A sensitive EUV Schwarzschild microscope for plasma studies with sub-micrometer resolution//,
210 Rev. Sci. Instr. **89**, 023703 (2018);
211 [[http:~~/~~/dx.doi.org/10.1063/1.5007950>>url:http://dx.doi.org/10.1063/1.5007950||shape="rect"]]
212 )))
213 1. (((
214 U. Zastrau, P. Sperling, M. Harmand, A. Becker, T. Bornath, R. Bredow, S. Dziarzhytski, T. Fennel, L.B. Fletcher, E. Förster, S. Göde, G. Gregori, V. Hilbert, D. Hochhaus, B. Holst, T. Laarmann, H.J. Lee, T. Ma, J.P. Mithen, R. Mitzner, C.D. Murphy, M. Nakatsutsumi, P. Neumayer, A. Przystawik, S. Roling, M. Schulz, B. Siemer, S. Skruszewicz, J. Tiggesbäumker, S. Toleikis, T. Tschentscher, T. White, M. Wöstmann, H. Zacharias, T. Döppner, S.H. Glenzer, and R. Redmer,
215 //Resolving Ultrafast Heating of Dense Cryogenic Hydrogen//,
216 Phys. Rev. Lett. **112**, 105002 (2014);
217 [[http:~~/~~/dx.doi.org/10.1103/PhysRevLett.112.105002>>url:http://dx.doi.org/10.1103/PhysRevLett.112.105002||shape="rect"]]
218 )))
219 1. (((
220 A. Przystawik, A. Kickermann, A. Al-Shemmary, S. Düsterer, A.M. Ellis, K. von Haeften, M. Harmand, S. Ramakrishna, H. Redlin, L. Schroedter, M. Schulz, T. Seideman, N. Stojanovic, J. Szekely, F. Tavella, S. Toleikis, and T. Laarmann,
221 //Generation of the simplest rotational wave packet in a diatomic molecule: Tracing a two-level superposition in the time domain//,
222 Phys. Rev. A **85**, 052503 (2012);
223 [[http:~~/~~/dx.doi.org/10.1103/PhysRevA.85.052503>>url:http://dx.doi.org/10.1103/PhysRevA.85.052503||shape="rect"]]
224 )))
225
226 (% style="margin-left: 30.0px;" %)
227 Additional XUV spectrometers: Knick-Spec (1.), HiTraX (2.)
228
229 1. (((
230 L. Schroedter, M. Müller, A. Kickermann, A. Przystawik, S. Toleikis, M. Adolph, L. Flückiger, T. Gorkhover, L. Nösel, M. Krikunova, T. Oelze, Y. Ovcharenko, D. Rupp, M. Sauppe, D. Wolter, S. Schorb, C. Bostedt, T. Möller, and T. Laarmann,
231 //Hidden Charge States in Soft-X-Ray Laser-Produced Nanoplasmas Revealed by Fluorescence Spectroscopy//,
232 Phys. Rev. Lett. **112**, 183401 (2014);
233 [[http:~~/~~/dx.doi.org/10.1103/PhysRevLett.112.183401>>url:http://dx.doi.org/10.1103/PhysRevLett.112.183401||shape="rect"]]
234 )))
235 1. R.R. Fäustlin, U. Zastrau, S. Toleikis, I. Uschmann, E. Förster and Th. Tschentscher,
236 //A compact soft X-ray spectrograph combining high efficiency and resolution//,
237 JINST **5**, P02004 (2010);
238 [[http:~~/~~/dx.doi.org/10.1088/1748-0221/5/02/P02004>>url:http://dx.doi.org/10.1088/1748-0221/5/02/P02004||shape="rect"]]
239
240 == MUSIX chamber ==
241
242 1. M. Beye, R.Y. Engel, J.O. Schunck, S. Dziarzhytski, G. Brenner, P.S. Miedema,
243 //Non-Linear Soft X-Ray Methods on Solids with MUSIX - the Multi-Dimensional Spectroscopy and Inelastic X-Ray Scattering Endstation//,
244 J. Phys.: Condens. Matter **31**, 014003 (2019)**,**
245 [[https:~~/~~/doi.org/10.1088/1361-648X/aaedf3>>url:https://doi.org/10.1088/1361-648X/aaedf3||shape="rect"]]
246
247 == URSA-PQ chamber ==
248
249 (% style="text-align:left" %)
250 1. (((
251 Jan Metje, Fabiano Lever, Dennis Mayer, Richard James Squibb, Matthew S. Robinson, Mario Niebuhr, Raimund Feifel, Stefan Düsterer, Markus Gühr,
252 //URSA-PQ: A Mobile and Flexible Pump-Probe Instrument for Gas Phase Samples at the FLASH Free Electron Laser//,
253 Appl. Sci. **10**, 7882 (2020); [[http:~~/~~/dx.doi.org/10.3390/app10217882>>url:http://dx.doi.org/10.3390/app10217882||shape="rect" style="text-decoration: none;"]]
254 )))
255
256 == Split and Delay Units: ==
257
258 === At beamline PG2 ===
259
260 1. F. Sorgenfrei, W.F. Schlotter, T. Beeck, M. Nagasono, S. Gieschen, H. Meyer, A. Föhlisch, M. Beye, and W. Wurth,
261 //The extreme ultraviolet split and femtosecond delay unit at the plane grating monochromator beamline PG2 at FLASH//,
262 Rev. of Sci. Instr. **81**, 043107 (2010);
263 [[http:~~/~~/dx.doi.org/10.1063/1.3374166>>url:http://dx.doi.org/10.1063/1.3374166||shape="rect"]]
264
265 === At beamline BL1 /CAMP ===
266
267 1. Mario Sauppe, Dimitrios Rompotis, Benjamin Erk, Sadia Bari, Tobias Bischoff, Rebecca Boll, Cédric Bomme, Christoph Bostedt, Simon Dörner, Stefan Düsterer, Torsten Feigl, Leonie Flückiger, Tais Gorkhover, Katharina Kolatzki, Marion Kuhlmann, Bruno Langbehn, Nils Monserud, Erland Müller, Jan P. Müller, Christopher Passow, Daniel Ramm, Daniel Rolles, Kaja Schubert, Lucas Schwob, Björn Senfftleben, Rolf Treusch, Anatoli Ulmer, Holger Weigelt, Jannis Zimbalski, Julian Zimmermann, Thomas Möller and Daniela Rupp,
268 //XUV double-pulses with femtosecond to 650 picoseconds separation from a multilayer mirror based split-and-delay unit at FLASH//,
269 J. Synchr. Rad. **25**, (% class="ica_pages" %)1517-1528(%%) (2018);
270 [[https:~~/~~/doi.org/10.1107/S1600577518006094>>url:https://doi.org/10.1107/S1600577518006094||shape="rect"]]
271
272 === At beamline BL2 ===
273
274 1. M. Wöstmann, R. Mitzner, T. Noll, S. Roling, B. Siemer, F. Siewert, S. Eppenhoff, F. Wahlert and H. Zacharias,
275 //The XUV split-and-delay unit at beamline BL2 at FLASH//,
276 J. Phys. B: At. Mol. Opt. Phys. **46**, Special Issue: Frontiers of FEL Science, 164005 (2013);
277 [[http:~~/~~/dx.doi.org/10.1088/0953-4075/46/16/164005>>url:http://dx.doi.org/10.1088/0953-4075/46/16/164005||shape="rect"]]
278 1. R. Mitzner, B. Siemer, S. Roling, M. Wöstmann, T. Noll, F. Siewert, A.A. Sorokin, M. Richter, K. Tiedtke, H. Zacharias,
279 //A new soft x-ray autocorrelator – direct evaluation of the temporal properties of FEL pulses at 24 nm//,
280 Proceedings SRI 2009, AIP Conference Proceedings **1234**, pp. 19-22 (2010);
281 [[http:~~/~~/dx.doi.org/10.1063/1.3463172>>url:http://dx.doi.org/10.1063/1.3463172||shape="rect"]]
282
283 === At beamlines FL24/FL23 ===
284
285 1. (% style="color:#000000" %)Matthias Dreimann, Frank Wahlert, Dennis Eckermann, Felix Rosenthal, Sebastian Roling, Tobias Reiker, Marion Kuhlmann, Sven Toleikis, Maciej Brachmanski, Rolf Treusch, Elke Plönjes, Björn Siemer and Helmut Zacharias
286 //The soft X-ray and XUV split-and-delay unit at beamlines FL23/24 at FLASH2//
287 J. Synchrotron Rad. (%%)**30**(% style="color:#000000" %), (% class="ica_pages" %)479-489 (2023)(%%)
288 (% class="ica_doi" style="color:#000000" %)[[https:~~/~~/doi.org/10.1107/S1600577523000395>>url:https://doi.org/10.1107/S1600577523000395||shape="rect" style="text-decoration: none;" title="Open URL link"]]
289 1. M. Dreimann, S. Roling, F. Wahlert, S. Eppenhoff, M. Kuhlmann, S. Toleikis, M. Brachmanski, R. Treusch, E. Plönjes, H. Zacharias,
290 //A XUV and soft X-ray split-and-delay unit for FLASH2//,
291 Proc. SPIE **11776**, EUV and X-ray Optics, Sources, and Instrumentation; 117760R (30 April 2021);
292 [[https:~~/~~/doi.org/10.1117/12.2597647>>url:https://doi.org/10.1117/12.2597647||shape="rect"]]
293
294 == Fast Switching Mirror (BL beamlines) ==
295
296 1. R. Sternberger, M. Sachwitz, A. Donat, U. Gensch, R. Heller, LV. Vu, U. Hahn, H. Schulte-Schrepping, K. Tiedtke,
297 //A fast switching mirror unit at FLASH//,
298 Nucl. Instrum. Methods A **635**, S47-S51 (2011);
299 [[http:~~/~~/dx.doi.org/10.1016/j.nima.2010.11.002>>url:http://dx.doi.org/10.1016/j.nima.2010.11.002||shape="rect"]]
300 1. J. Good, N. Leuschner, J. Nagler, F. Perlick, M. Sachwitz  and L.V. Vu,
301 //A Fast Switching Mirror Unit at FLASH//,
302 J. Phys.: Conf. Series **425**, 122008 (2013);
303 [[http:~~/~~/dx.doi.org/10.1088/1742-6596/425/12/122008>>url:http://dx.doi.org/10.1088/1742-6596/425/12/122008||shape="rect"]]
304
305 == 4-mirror polarizer for circular polarization (BL beamlines) ==
306
307 1. C. von Korff Schmising et al.,
308 //Generating circularly polarized radiation in the extreme ultraviolet spectral range at the free-electron laser FLASH//,
309 Review of Scientic Instruments 88 053903 (2017);
310 [[https:~~/~~/doi.org/10.1063/1.4983056>>url:https://doi.org/10.1063/1.4983056||shape="rect"]]
311
312 == Fast shutter (BL, PG, and FLASH2 beamlines) ==
313
314 1. (((
315 E. Plönjes and K. Tiedtke,
316 //The Soft X-ray Free-Electron Laser FLASH at DESY//
317 in Optical Technologies for Extreme-Ultraviolet and Soft X-ray Coherent Sources,
318 edited by F. Canova and L. Poletto (Springer Series in Optical Sciences, Vol. 197, Springer, Heidelberg, 2015);
319 )))
320
321 == Photon diagnostics papers ==
322
323 === **a) Gas Monitor Detector (GMD)** ===
324
325 1. Andrey A. Sorokin, Yilmaz Bican, Susanne Bonfigt, Maciej Brachmanski, Markus Braune, Ulf Fini Jastrow, Alexander Gottwald, Hendrik Kaser, Mathias Richter and Kai Tiedtke,
326 //An X-ray gas monitor for free-electron lasers//,
327 J. Synchrotron Rad. **26**, 1092-1100 (2019);
328 [[https:~~/~~/doi.org/10.1107/S1600577519005174>>url:https://doi.org/10.1107/S1600577519005174||shape="rect"]]
329 1. K. Tiedtke, J. Feldhaus, U. Hahn, U. Jastrow, T. Nunez, T. Tschentscher, S.V. Bobashev, A.A. Sorokin,  J.B. Hastings, S. Möller, L. Cibic, A. Gottwald, A. Hoehl, U. Kroth, M. Krumrey, H. Schöppe, G. Ulm, M. Richter,
330 //Gas-detector for X-ray lasers//,
331 J. Appl. Phys. **103**, 094511 (2008);
332 [[http:~~/~~/dx.doi.org/10.1063/1.2913328>>url:http://dx.doi.org/10.1063/1.2913328||shape="rect"]]
333 1. __ GMD used to determine focal spot sizes__:  (% style="color:#000000" %)A.A. Sorokin, A. Gottwald, A. Hoehl, U. Kroth, H. Schöppe, G. Ulm, M. Richter, S.V. Bobashev, I. Domracheva, D. Smirnov, K. Tiedtke, S. Düsterer, J. Feldhaus, U. Hahn, U. Jastrow, M. Kuhlmann, T. Nuñez, E. Plönjes, and R. Treusch,(%%)
334 (% style="text-align:left" %)//Method based on atomic photoionization for spot-size measurement on focused soft x-ray free-electron laser beams//(% style="color:#000000" %),(%%)
335 (% style="color:#000000" %)Appl. Phys. Lett. (% style="text-align:left" %)**89**(% style="color:#000000" %), 221114 (2006); (%%)[[http:~~/~~/dx.doi.org/10.1063/1.2397561>>url:http://dx.doi.org/doi:10.1063/1.2397561||shape="rect" style="text-decoration: none;text-align: left;"]]
336
337 === **b) VLS Online Spectrometer** ===
338
339 1. G. Brenner, S. Kapitzki, M. Kuhlmann, E. Ploenjes, T. Noll, F. Siewert,  R. Treusch, K. Tiedtke, R. Reininger, M.D. Roper, M.A. Bowler, F.M. Quinn, J. Feldhaus,
340 //First results from the online variable line spacing grating spectrometer at FLASH//,
341 Nucl. Instr. and Meth A **635**, S99–S103 (2011);
342 [[http:~~/~~/dx.doi.org/10.1016/j.nima.2010.09.134>>url:http://dx.doi.org/10.1016/j.nima.2010.09.134||shape="rect"]]
343 1. C. Gerth, G. Brenner, M. Caselle, S. Düsterer, D. Haack, D. Makowski, A. Mielczarek, S. Palutke, L. Rota, V. Rybnikov, C. Schmidt, B. Steffen, K. Tiedtke,
344 //Linear array detector for online diagnostics of spectral distributions at MHz repetition rates//,
345 J. Synchrotron Rad. **26**, 1514-1522 (2019);
346 [[https:~~/~~/doi.org/10.1107/S1600577519007835>>url:https://doi.org/10.1107/S1600577519007835||shape="rect"]]
347
348 === **c) FLASH1 Tunnel Spectrometer** ===
349
350 ​​​​​​
351
352 1. S. Düsterer, P. Radcliffe, G. Geloni, U. Jastrow, M. Kuhlmann, E. Plönjes, K. Tiedtke, R. Treusch, J. Feldhaus, P. Nicolosi, L. Poletto, P. Yeates, H. Luna, J.T. Costello, P. Orr, D. Cubaynes and M. Meyer,
353 //Spectroscopic characterization of vacuum ultraviolet free electron laser pulses//,
354 Opt. Lett. **31**, 1750-1752 (2006);
355 [[http:~~/~~/dx.doi.org/10.1364/OL.31.001750>>url:http://dx.doi.org/doi:10.1364/OL.31.001750||shape="rect" style="letter-spacing: 0.0px;"]]
356
357 === **d) Compact Spectrometer** ===
358
359 1. F. Frassetto, S. Coraggia, S. Dziarzhytski, N. Gerasimova, L. Poletto,
360 //Extreme-ultraviolet compact spectrometer for the characterization of the harmonics content in the free-electron-laser radiation at FLASH//,
361 J. Synchrotron Rad. **19**, 596-601 (2012);
362 [[http:~~/~~/dx.doi.org/10.1107/S0909049512022224>>url:http://dx.doi.org/10.1107/S0909049512022224||shape="rect"]]
363 1. Fabio Frassetto, Siarhei Dziarzhytski, Natalia Guerassimova and Luca Poletto,
364 //Compact spectrometer for on-line photon diagnostics at FLASH//,
365 J. Phys.: Conf. Ser. **425**,122010 (2013);
366 [[http:~~/~~/dx.doi.org/10.1088/1742-6596/425/12/122010>>url:http://dx.doi.org/10.1088/1742-6596/425/12/122010||shape="rect"]]
367 1. F. Frassetto et al.,
368 (% class="title-text" %)//Compact spectrometer for photon diagnostics of the extreme-ultraviolet free-electron-laser radiation//, (%%)
369 Nucl. Instrum. Meth. A 635 S94-98 (2011)
370 [[https:~~/~~/doi.org/10.1016/j.nima.2010.11.004>>url:https://doi.org/10.1016/j.nima.2010.11.004||shape="rect"]]
371
372 === **e) Online photoionization spectrometer (OPIS)** ===
373
374
375 1. Gregor Hartmann, Gesa Goetzke, Stefan Düsterer, Peter Feuer-Forson, Fabiano Lever, David Meier, Felix Möller, Luis Vera Ramirez, Markus Guehr, Kai Tiedtke, Jens Viefhaus & Markus Braune,
376 //Unsupervised real‑world knowledge extraction via disentangled variational autoencoders for photon diagnostics//,
377 Sci. Rep. **12, **20783 (2022); [[https:~~/~~/doi.org/10.1038/s41598-022-25249-4>>url:https://doi.org/10.1038/s41598-022-25249-4]]
378 1. Markus Braune, Jens Buck, Marion Kuhlmann, Sören Grunewald, Stefan Düsterer, Jens Viefhaus, Kai Tiedtke
379 //Non-invasive online wavelength measurements at FLASH2 and present benchmark.//
380 Proc. PhotonDiag2017,
381 J. Synchrotron Rad. **25**, 3–15 (2018)
382 (% style="color:#3366ff" %)__[[https:~~/~~/doi.org/10.1107/S1600577517013893>>url:https://doi.org/10.1107/S1600577517013893||shape="rect" style="color: rgb(51,102,255);"]]__
383 1. Markus Braune, Günter Brenner, Siarhei Dziarzhytski, Pavle Juranić, Andrey Sorokin, Kai Tiedtke,
384 //A non-invasive online photoionization spectrometer for FLASH2//,
385 Proc. PhotonDiag2015,
386 J. Synchrotron Rad. **23**, 10-20 (2016);
387 [[__http:~~/~~/dx.doi.org/10.1107/S1600577515022675__>>url:http://dx.doi.org/10.1107/S1600577515022675||shape="rect"]]
388 1. Wellhöfer, J.T. Hoeft, M. Martins, W. Wurth, M. Braune, J. Viefhaus, M. Richter, K. Tiedtke,
389 //Photoelectron spectroscopy as non-invasive method to monitor SASE-FEL radiation//,
390 JINST **3**, P02003 (2008);
391 [[__http:~~/~~/dx.doi.org/10.1088/1748-0221/3/02/P02003__>>url:http://dx.doi.org/10.1088/1748-0221/3/02/P02003||shape="rect"]]
392
393 === **f) Gotthard detector** ===
394
395 1. Palutke, N.C. Gerken, K. Mertens, S. Klumpp, A. Mozzanica, B. Schmitt, C. Wunderer, H. Graafsma, K.-H. Meiwes-Broer, W. Wurth, M. Martins,
396 //Spectrometer for shot-to-shot photon energy characterization in the multi-bunch mode of the free electron laser at Hamburg//,
397 Rev. Sci. Instrum. **86**, 113107(2015);[[__ http:~~/~~/scitation.aip.org/content/aip/journal/rsi/86/11/10.1063/1.4936293__>>url:http://scitation.aip.org/content/aip/journal/rsi/86/11/10.1063/1.4936293||shape="rect"]]
398
399 === **g) KALYPSO detector** ===
400
401 1. C. Gerth, G. Brenner, M. Caselle, S. Düsterer, D. Haack, D. Makowski, A. Mielczarek, S. Palutke, L. Rota, V. Rybnikov, C. Schmidt, B. Steffen, K. Tiedtke,
402 //Linear array detector for online diagnostics of spectral distributions at MHz repetition rates//,
403 J. Synchrotron Rad. **26**, 1514-1522 (2019);
404 [[https:~~/~~/doi.org/10.1107/S1600577519007835>>url:https://doi.org/10.1107/S1600577519007835||shape="rect"]]
405 1. Rota L et al.,
406 (% class="title-text" %)//KALYPSO: Linear array detector for high-repetition rate and real-time beam diagnostics//, (%%)
407 Nucl. Instr. and Meth. A 936 10-13 (2018)
408 [[https:~~/~~/doi.org/10.1016/j.nima.2018.10.093>>url:https://doi.org/10.1016/j.nima.2018.10.093||shape="rect"]]
409
410 === **h) Timing tools (photon arrival time monitors)** ===
411
412 1. E. Zapolnova, R. Pan, T. Golz, M. Sindik, M. Nikolic, M. Temme, M. Rabasovic, D. Grujic, Z. Chen, S. Toleikis, N. Stojanovic,
413 //XUV-driven plasma switch for THz: new spatio-temporal overlap tool for XUV−THz pump−probe experiments at FELs//,
414 J. Synchrotron Rad. **27**, 11-16 (2020);
415 [[https:~~/~~/doi.org/10.1107/S1600577519014164>>url:https://doi.org/10.1107/S1600577519014164||shape="rect"]]
416 1. M. Harmand, C.D. Murphy, C.R.D. Brown, M. Cammarata, T. Döppner, S. Düsterer, D. Fritz, E. Förster, E. Galtier, J. Gaudin, S.H. Glenzer, S. Göde, G. Gregori, V. Hilbert, D. Hochhaus, T. Laarmann, H.J. Lee, H. Lemke, K.-H. Meiwes-Broer, A. Moinard, P. Neumayer, A. Przystawik, H. Redlin, M. Schulz, S. Skruszewicz, F. Tavella, T. Tschentscher, T. White, U. Zastrau, S.Toleikis,
417 //Plasma switch as a temporal overlap tool for pump-probe experiments at FEL facilities//,
418 JINST **7**, P08007 (2012);
419 [[http:~~/~~/dx.doi.org/10.1088/1748-0221/7/08/P08007>>url:http://dx.doi.org/10.1088/1748-0221/7/08/P08007||shape="rect"]]
420 1. M. Drescher, U. Frühling, M. Krikunova, Th. Maltezopoulos, M. Wieland,
421 //Time-diagnostics for improved dynamics experiments at XUV FELs//,
422 J. Phys. B, **43**, 194010 (2010);
423 [[http:~~/~~/dx.doi.org/10.1088/0953-4075/43/19/194010>>url:http://dx.doi.org/10.1088/0953-4075/43/19/194010||shape="rect"]]
424 1. T. Maltezopoulos, S. Cunovic, M. Wieland, M. Beye, A. Azima, H. Redlin, M. Krikunova, R. Kalms, U. Frühling, F. Budzyn, W. Wurth, A. Föhlisch, M. Drescher,
425 //Single-shot timing measurement of extreme-ultraviolet free-electron laser pulses,//
426 New Journal of Physics **10**, 033026 (2008);
427 [[http:~~/~~/dx.doi.org/10.1088/1367-2630/10/3/033026>>url:http://dx.doi.org/10.1088/1367-2630/10/3/033026||shape="rect"]]
428 1. C. Gahl, A. Azima, M. Beye, M. Deppe, K. Döbrich, U. Hasslinger, F. Hennies, A. Melnikov, M. Nagasono, A. Pietzsch, M. Wolf, W. Wurth, A. Föhlisch,
429 //A femtosecond X-ray/optical cross-correlator//,
430 Nature Photonics **2**, 165-169 (2008);
431 [[__http:~~/~~/dx.doi.org/10.1038/nphoton.2007.298__>>url:http://dx.doi.org/10.1038/nphoton.2007.298||shape="rect"]]
432
433 === **i) XUV Pulse Length measurements** ===
434
435 1. **(overview)**
436 S. Düsterer, M. Rehders, A. Al-Shemmary, C. Behrens, G. Brenner, O. Brovko, M. DellAngela, M. Drescher, B. Faatz, J. Feldhaus, U. Frühling, N. Gerasimova, N. Gerken, C. Gerth, T. Golz, A. Grebentsov, E. Hass, K. Honkavaara, V. Kocharian, M. Kurka, Th. Limberg, R. Mitzner, R. Moshammer, E. Plönjes, M. Richter, J. Rönsch-Schulenburg, A. Rudenko, H. Schlarb, B. Schmidt, A. Senftleben, E.A. Schneidmiller, B. Siemer, F. Sorgenfrei, A.A. Sorokin, N. Stojanovic, K. Tiedtke, R. Treusch, M. Vogt, M. Wieland, W. Wurth, S. Wesch, M. Yan, M.V. Yurkov, H. Zacharias, S. Schreiber,
437 //Development of experimental techniques for the characterization of ultrashort photon pulses of extreme ultraviolet free-electron lasers//,
438 Phys. Rev. STAB **17**, 120702 (2014);
439 [[__http:~~/~~/dx.doi.org/10.1103/PhysRevSTAB.17.120702__>>url:http://dx.doi.org/10.1103/PhysRevSTAB.17.120702||shape="rect"]]
440 1. **(THz streaking - different pulse durations)**
441 R. Ivanov, (% class="nowrap" %)I. Bermúdez Macias(%%), (% class="nowrap" %)J. Liu(%%), (% class="nowrap" %)G. Brenner(%%), (% class="nowrap" %)J. Roensch-Schulenburg(%%), (% class="nowrap" %)G. Kurdi(%%), (% class="nowrap" %)U. Fruehling, K, Wenig(%%), (% class="nowrap" %)S Walther(%%), (% class="nowrap" %)A Dimitriou(% class="reveal-container reveal-content reveal-enabled reveal-no-animation reveal-plus-icon" %), (% class="nowrap reveal-container reveal-content reveal-enabled reveal-no-animation reveal-plus-icon" %)M Drescher(% class="reveal-container reveal-content reveal-enabled reveal-no-animation reveal-plus-icon" %), (% class="nowrap reveal-container reveal-content reveal-enabled reveal-no-animation reveal-plus-icon" %)I P Sazhina(% class="reveal-container reveal-content reveal-enabled reveal-no-animation reveal-plus-icon" %), (% class="nowrap reveal-container reveal-content reveal-enabled reveal-no-animation reveal-plus-icon" %)A K Kazansky(% class="reveal-container reveal-content reveal-enabled reveal-no-animation reveal-plus-icon" %), (% class="nowrap reveal-container reveal-content reveal-enabled reveal-no-animation reveal-plus-icon" %)N M Kabachnik(% class="reveal-container reveal-content reveal-enabled reveal-no-animation reveal-plus-icon" %) and (% class="nowrap reveal-container reveal-content reveal-enabled reveal-no-animation reveal-plus-icon" %)S. Düsterer(%%)
442 //Single-shot temporal characterization of XUV pulses with duration from ~~10 fs to ~~350 fs at FLASH//
443 J. Phys. B: At. Mol. Opt. Phys. (2020)
444 (% class="Object" %)__[[https:~~/~~/doi.org/10.1088/1361-6455/ab9c38>>url:https://doi.org/10.1088/1361-6455/ab9c38||shape="rect"]]__
445 1. (((
446 **(THz streaking - statistical analysis)**
447 I. J. Bermúdez Macias, S. Düsterer, R. Ivanov, J. Liu, G. Brenner, J.Rönsch-Schulenburg, M.K. Czwalinna, and M. V. Yurkov,
448 //Study of temporal, spectral, arrival time and energy fluctuations of SASE FEL pulses//,
449 Optics Express 29, 10491-10508 (2021); 
450 __[[https:~~/~~/doi.org/10.1364/OE.419977>>url:https://doi.org/10.1364/OE.419977||shape="rect" style="letter-spacing: 0.0px;"]]__
451 )))
452
453 {{expand title="Further references - Click here to expand..."}}
454 1. **(general overview - not only FLASH)**
455 W. Helml, I. Grguraš, P. N. Juranić, S. Düsterer, T. Mazza, A. R. Maier, N. Hartmann, M. Ilchen, G. Hartmann, L. Patthey, C. Callegari, J. T. Costello, M. Meyer, R. N. Coffee, A. L. Cavalieri, R. Kienberger,
456 //Ultrashort Free-Electron Laser X-ray Pulses//,
457 Appl. Sci. **7**, 915 (2017);
458 __[[http:~~/~~/dx.doi.org/10.3390/app7090915>>url:http://dx.doi.org/10.3390/app7090915||shape="rect"]]__
459 1. **(THz streaking)**
460 R. Ivanov, J. Liu, G. Brenner, M. Brachmanski, S. Düsterer,
461 //FLASH free-electron laser single-shot temporal diagnostic: terahertz-field-driven streaking//,
462 Special Issue (PhotonDiag2017),
463 J. Synchrotron Rad**. 25, **26-31 (2018);
464 [[https:~~/~~/doi.org/10.1107/S160057751701253X>>url:https://doi.org/10.1107/S160057751701253X||shape="rect"]]
465 1. **(THz streaking)**
466 I. Grguraš, A.R. Maier, C. Behrens, T. Mazza, T J. Kelly, P. Radcliffe, S. Düsterer, A.K. Kazansky,   N.M. Kabachnik,  Th. Tschentscher,   J.T. Costello,   M. Meyer, M.C. Hoffmann, H. Schlarb, A.L. Cavalieri,
467 //Ultrafast X-ray pulse characterization at free-electron lasers//,
468 Nature Photonics **6**, 852-857 (2012);
469 [[http:~~/~~/dx.doi.org/10.1038/NPHOTON.2012.276>>url:http://dx.doi.org/10.1038/NPHOTON.2012.276||shape="rect"]]
470 1. **(THz streaking)**
471 U. Frühling, M. Wieland, M. Gensch, T. Gebert, B. Schütte, M. Krikunova, R. Kalms^^.^^, F. Budzyn, O. Grimm, J. Rossbach, E. Plönjes, M. Drescher,
472 //Single-shot THz field driven X-ray streak-camera//,
473 Nature Photonics **3**, 523-528 (2009);
474 [[http:~~/~~/dx.doi.org/10.1038/nphoton.2009.160>>url:http://dx.doi.org/10.1038/nphoton.2009.160||shape="rect"]]
475 1. **(spectral measurements)**
476 R. Engel, S. Düsterer, G. Brenner, and U. Teubner,
477 //Quasi-real-time photon pulse duration measurement by analysis of FEL radiation spectra//,
478 Proc. PhotonDiag2015,
479 J. Synchrotron Rad. **23**, 118-122 (2016);
480 [[__http:~~/~~/dx.doi.org/10.1107/S1600577515022997__>>url:http://dx.doi.org/10.1107/S1600577515022997||shape="rect"]]
481 1. (((
482 **(spectral and electron measurements, LOLA)**
483 Behrens C. , Gerasimova N., Gerth Ch., Schmidt B., Schneidmiller E. ,Serkez S., Wesch S., Yurkov, M.  
484 //Constraints on photon pulse duration from longitudinal electron beamdiagnostics at a soft X-ray free-electron laser//
485 Phys. Rev. STAB **15**, 030707 (2012);
486 [[http:~~/~~/dx.doi.org/10.1103/PhysRevSTAB.15.030707>>url:http://dx.doi.org/10.1103/PhysRevSTAB.15.030707||shape="rect"]]
487 )))
488 1. (((
489 **(reflectivity change on solids)**
490 R. Riedel, A. Al-Shemmary, M. Gensch, T. Golz, M. Harmand, N. Medvedev, M.J. Prandolini, K. Sokolowski-Tinten, S. Toleikis, U. Wegner, B. Ziaja, N. Stojanovic, F. Tavella,
491 //Single-shot pulse duration monitor for extreme ultraviolet and X-ray free-electron lasers//,
492 Nature Comm. **4**, 1731 (2013);
493 [[http:~~/~~/dx.doi.org/10.1038/ncomms2754>>url:http://dx.doi.org/10.1038/ncomms2754||shape="rect"]]
494 )))
495
496
497 {{/expand}}
498
499
500 === **j) Wavefront Sensor and Wigner Distribution measurements** ===
501
502 1. Barbara Keitel, Jaromír Chalupský, Šimon Jelínek, Tomáš Burian, Siarhei Dziarzhytski, Věra Hájková, Libor Juha, Zuzana Kuglerová, Marion Kuhlmann, Klaus Mann, Mabel Ruiz-Lopez, Bernd Schäfer, Vojtěch Vozda, Thomas Wodzinski, Mikhail V. Yurkov, and Elke Plönjes,
503 //Comparison of wavefront sensing and ablation imprinting for FEL focus diagnostics at FLASH2//,
504 Opt. Express **32**, 21532-21552 (2024); [[https:~~/~~/doi.org/10.1364/OE.527418>>url:https://doi.org/10.1364/OE.527418]]
505 1. (((
506 B. Keitel, E. Plönjes, S. Kreis, M. Kuhlmann, K. Tiedtke, T. Mey, B. Schäfer, K. Mann,
507 //Hartmann wavefront sensors and their application at FLASH//,
508 Proc. PhotonDiag2015,
509 J. Synchrotron Rad. **23**, 43-49 (2016);
510 [[http:~~/~~/dx.doi.org/10.1107/S1600577515020354>>url:http://dx.doi.org/10.1107/S1600577515020354||shape="rect"]]
511 )))
512
513 {{expand title="Further References: click here to expand..."}}
514 1.
515 1. K. Mann, B. Flöter, T. Mey, B. Schäfer, B. Keitel, E. Plönjes, K. Tiedtke,
516 //Hartmann wavefront sensor for EUV radiation//,
517 Proc. SPIE **8679**, Extreme Ultraviolet (EUV) Lithography IV, 867922 (April 1, 2013);
518 [[http:~~/~~/dx.doi.org/10.1117/12.2011508>>url:http://dx.doi.org/10.1117/12.2011508||shape="rect"]]
519 1. T. Mey, //Radiation characteristics of extreme UV and soft X-ray sources//
520 PhD Thesis, Georg-August-Universität Göttingen.
521 Göttingen Series in X-ray Physics; 15 (2015), Universitätsverlag Göttingen, Göttingen, ISBN13: 978-3-86395-211-2;
522 [[__http:~~/~~/resolver.sub.uni-goettingen.de/purl?univerlag-isbn-978-3-86395-211-2__>>url:http://resolver.sub.uni-goettingen.de/purl?univerlag-isbn-978-3-86395-211-2||shape="rect"]]   (for Wigner distribution measurements)
523 1. T. Mey, B. Schäfer, K. Mann, B. Keitel, M. Kuhlmann, and E. Plönjes,
524 //Wigner distribution measurements of the spatial coherence properties of the free-electron laser FLASH//
525 Optics Express **22**, 16571 (2014);
526 [[__http:~~/~~/dx.doi.org/10.1364/OE.22.016571__>>url:http://http/dx.doi.org/10.1364/OE.22.016571||shape="rect"]]
527 1. B. Flöter, //Strahlcharakterisierung von Freie-Elektronen-Lasern im weichen Röntgen-Spektralbereich// 
528 PhD Thesis, Georg-August-Universität Göttingen,
529 Göttingen Series in X-ray Physics; 8 (2012), Universitätsverlag Göttingen, Göttingen, ISBN13: 978-3-86395-074-3;
530 [[https:~~/~~/univerlag.uni-goettingen.de/bitstream/handle/3/isbn-978-3-86395-074-3/GSXP8_floeter.pdf?sequence=1&>>url:https://univerlag.uni-goettingen.de/bitstream/handle/3/isbn-978-3-86395-074-3/GSXP8_floeter.pdf?sequence=1&||shape="rect"]]  (for wavefront sensors)
531 {{/expand}}
532
533
534 ----
535
536 = Pump-Probe Laser systems =
537
538 **a) FLASH2**
539
540 1. T. Lang, S. Alisauskas, U. Große-Wortmann, T. Hülsenbusch, B. Manschwetus, C. Mohr, J. Müller, F. Peters, N. Schirmel, S. Schulz, A. Swiderski, J. Zheng and I. Hartl,
541 Versatile OPCPA Pump-Probe Laser System for the FLASH2 XUV FEL Beamline at DESY,
542 //2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)//, Munich, Germany, 2019, pp. 1-1;
543 [[http:~~/~~/dx.doi.org/10.1109/CLEOE-EQEC.2019.8871596>>url:http://dx.doi.org/10.1109/CLEOE-EQEC.2019.8871596||shape="rect"]]
544 1. N. Schirmel, S. Alisauskas, T. Hülsenbusch, B. Manschwetus, C. Mohr, L. Winkelmann, U. Große-Wortmann, J. Zheng, T. Lang, and I. Hartl,
545 //Long-Term Stabilization of Temporal and Spectral Drifts of a Burst-Mode OPCPA System//,
546 in //Conference on Lasers and Electro-Optics//, OSA Technical Digest (Optical Society of America, 2019), paper STu4E.4.;
547 [[https:~~/~~/doi.org/10.1364/CLEO_SI.2019.STu4E.4>>url:https://doi.org/10.1364/CLEO_SI.2019.STu4E.4||shape="rect"]]
548
549 **b) FLASH1**
550
551 1. H. Redlin, A. Al-Shemmary, A. Azima, N. Stojanovic, F. Tavella, I. Will, S. Düsterer,
552 //The FLASH pump-probe laser system: Setup, characterization and optical beamlines//.,
553 Nucl. Instrum. Methods A **635**, 88–93 (2011);
554 [[http:~~/~~/dx.doi.org/10.1016/j.nima.2010.09.159>>url:http://dx.doi.org/10.1016/j.nima.2010.09.159||shape="rect"]]
555 1. **(FEL-laser synchronization)**
556 S. Schulz, M. K. Czwalinna, M. Felber, P. Prędki, S. Schefer, H. Schlarb, U. Wegner,
557 //Femtosecond-precision synchronization of the pump-probe optical laser for user experiments at FLASH//,
558 Proc. SPIE **8778**, Advances in X-ray Free-Electron Lasers II: Instrumentation, 87780R (May 3, 2013);
559 [[http:~~/~~/dx.doi.org/10.1117/12.2021572>>url:http://dx.doi.org/10.1117/12.2021572||shape="rect"]]
560
561 **c) pump-probe data analysis**
562
563 1. Evgeny Savelyev, Rebecca Boll, Cédric Bomme, Nora Schirmel, Harald Redlin, Benjamin Erk, Stefan Düsterer, Erland Müller, Hauke Höppner, Sven Toleikis, Jost Müller, Marie Kristin Czwalinna, Rolf Treusch, Thomas Kierspel, Terence Mullins, Sebastian Trippel, Joss Wiese, Jochen Küpper, Felix Brauße, Faruk Krecinic, Arnaud Rouzée, Piotr Rudawski, Per Johnsson, Kasra Amini, Alexandra Lauer, Michael Burt, Mark Brouard, Lauge Christensen, Jan Thøgersen, Henrik Stapelfeldt, Nora Berrah, Maria Müller, Anatoli Ulmer, Simone Techert, Artem Rudenko, Daniel Rolles,
564 //Jitter-Correction for IR/UV-XUV Pump-Probe Experiments at the FLASH Free-Electron Laser//,
565 New J. Phys. **19**, 043009 (2017),
566 [[https:~~/~~/doi.org/10.1088/1367-2630/aa652d>>url:https://doi.org/10.1088/1367-2630/aa652d||shape="rect"]]
567
568 **d) HHG laser source at FL26/ReMi**
569
570 1. (((
571 E. Appi, C. C. Papadopoulou, J. L. Mapa, C. Jusko, P. Mosel, A. Schoenberg, J. Stock, T. Feigl, S. Ališauskas, T. Lang, C. M. Heyl, B. Manschwetus, M. Brachmanski, M. Braune, H. Lindenblatt, F. Trost, S. Meister, P. Schoch, A. Trabattoni, F. Calegari, R. Treusch, R. Moshammer, I. Hartl, U. Morgner, and M. Kovacev,
572 //Synchronized beamline at FLASH2 based on high-order harmonic generation for two-color dynamics studies//,
573 Rev. Sci. Instrum. **92**, 123004 (2021);
574 [[https:~~/~~/doi.org/10.1063/5.0063225>>url:https://doi.org/10.1063/5.0063225||shape="rect"]]
575 )))
576 1. Elisa Appi, Christina C. Papadopoulou, Jose Louise Mapa, Nishad Wesavkar, Christoph Jusko, Philip Mosel, Skirmantas Ališauskas, Tino Lang, Christoph M. Heyl, Bastian Manschwetus, Maciej Brachmanski, Markus Braune, Hannes Lindenblatt, Florian
577 Trost, Severin Meister, Patrizia Schoch, Rolf Treusch, Robert Moshammer, Ingmar Hartl, Uwe Morgner, and Milutin Kovacev,
578 //A synchronized VUV light source based on high-order harmonic generation at FLASH//,
579 Sci. Rep. **10**, 6867 (2020);
580 (% class="nolink" style="color:#003366" %)[[https:~~/~~/doi.org/10.1038/s41598-020-63019-2>>url:https://doi.org/10.1038/s41598-020-63019-2||shape="rect"]]
581
582 = Data analysis =
583
584 **Sorting data**
585
586 1. Dennis Mayer, Fabiano Lever and Markus Gühr,  ** (sorting GMD, BAM and Spectrum)**
587 (% style="letter-spacing:0.0px" %)//Data analysis procedures for time-resolved x-ray photoelectron spectroscopy at a SASE free-electron-laser,//(%%)
588 Phys. B: At. Mol. Opt. Phys. **55**, 054002 (2022); [[https:~~/~~/doi.org/10.1088/1361-6455/ac3c91>>url:https://doi.org/10.1088/1361-6455/ac3c91||shape="rect" style="letter-spacing: 0.0px;"]]
589 1. (((
590 R. Patrick Xian, Yves Acremann, Steinn Y. Agustsson, Maciej Dendzik, Kevin Bühlmann, Davide Curcio, Dmytro Kutnyakhov, Frederico Pressacco, Michael Heber, Shuo Dong, Tommaso Pincelli, Jure Demsar, Wilfried Wurth, Philip Hofmann, Martin Wolf, Markus Scheidgen, Laurenz Rettig, Ralph Ernstorfer, (% style="letter-spacing:0.0px" %)** (HEXTOF analysis)**(%%)
591 (% style="letter-spacing:0.0px" %)//An open-source, end-to-end workflow for multidimensional photoemission spectroscopy//,
592 Scientific Data **7**, 442 (2020); (%%)[[https:~~/~~/doi.org/10.1038/s41597-020-00769-8>>url:https://doi.org/10.1038/s41597-020-00769-8||shape="rect" style="text-decoration: none;"]]
593 )))
594 1. Evgeny Savelyev, Rebecca Boll, Cédric Bomme, Nora Schirmel, Harald Redlin, Benjamin Erk, Stefan Düsterer, Erland Müller, Hauke Höppner, Sven Toleikis, Jost Müller, Marie Kristin Czwalinna, Rolf Treusch, Thomas Kierspel, Terence Mullins, Sebastian Trippel, Joss Wiese, Jochen Küpper, Felix Brauße, Faruk Krecinic, Arnaud Rouzée, Piotr Rudawski, Per Johnsson, Kasra Amini, Alexandra Lauer, Michael Burt, Mark Brouard, Lauge Christensen, Jan Thøgersen, Henrik Stapelfeldt, Nora Berrah, Maria Müller, Anatoli Ulmer, Simone Techert, Artem Rudenko, Daniel Rolles, **(BAM and streak camera sorting)**
595 //Jitter-Correction for IR/UV-XUV Pump-Probe Experiments at the FLASH Free-Electron Laser//,
596 New J. Phys. **19**, 043009 (2017),
597 [[https:~~/~~/doi.org/10.1088/1367-2630/aa652d>>url:https://doi.org/10.1088/1367-2630/aa652d||shape="rect"]]
598
599 ----
600
601 = Other references =
602
603 **Damage Tresholds of optical components, start at TTF1**
604
605 1. Krzywinski, R. Sobierajski, M. Jurek, R. Nietubyc, J.B. Pelka, L. Juha, M. Bittner, V. Létal, and V. Vorlíček, A. Andrejczuk, J. Feldhaus, E.L. Saldin, E.A. Schneidmiller, R. Treusch, and M.V. Yurkov,
606 Conductors, semiconductors, and insulators irradiated with shortwavelength free-electron laser,
607 J. Appl. Phys. **101**, 043107 (2007);
608 [[http:~~/~~/dx.doi.org/10.1063/1.2434989>>url:http://dx.doi.org/10.1063/1.2434989||shape="rect"]]
609
610 **Study of fluorescent crystals for beam profile imaging, start at TTF1**
611
612 1. Kirm, A. Andrejczuk, J.Krzywinski, and R. Sobierajski,
613 //Influence of excitation density on luminescence decay in Y,,3,,Al,,5,,O,,12,,:Ce and BaF,,2,, crystals excited by free electron laser radiation in VUV//,
614 phys. stat. sol. (c) **2**, 649-652 (2005);
615 [[__http:~~/~~/dx.doi.org/10.1002/pssc.200460255__>>url:http://dx.doi.org/10.1002/pssc.200460255||shape="rect"]]
616
617 **Study of carbon coatings for FEL mirrors,  start at TTF1**
618
619 1. Steeg, L. Juha, J. Feldhaus, S. Jacobi, R. Sobierajski, C.Michaelsen, A. Andrejczuk, and J. Krzywinski,
620 //Total reflection amorphous carbon mirrors for vacuum ultraviolet free electron lasers//,
621 Appl. Phys. Lett. **84**, 657-659 (2004);
622 [[__http:~~/~~/dx.doi.org/10.1063/1.1645320__>>url:http://dx.doi.org/10.1063/1.1645320||shape="rect"]]
623 {{/layout-cell}}
624 {{/layout-section}}
625 {{/layout}}