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5 **Collection of reference papers for FLASH1 and FLASH2 beamlines and instruments.**
6
7 **Last update:** {{date value="2023-04-06" format="yyyy-MM-dd"/}}
8
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 et al.,
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
82 == FEL machine diagnostics ==
83
84 **a) Longitudinal FEL beam diagnostics (PolariX (1.) and LOLA (2.))**
85
86 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,
87 //Experimental demonstration of novel beam characterization// //using a polarizable X‑band// //transverse deflection structure//,
88 Scientific Reports **11**,3560 (2021);
89 [[https:~~/~~/doi.org/10.1038/s41598-021-82687-2>>url:https://doi.org/10.1038/s41598-021-82687-2||shape="rect"]]
90 1. C. Behrens, N. Gerasimova, Ch. Gerth, B. Schmidt, E. A. Schneidmiller, S. Serkez, S. Wesch, and M. V. Yurkov,
91 Constraints on photon pulse duration from longitudinal electron beam diagnostics at a soft x-ray free-electron laser,
92 Phys. Rev. ST Accel. Beams **15**, 030707 (2012)
93 [[https:~~/~~/doi.org/10.1103/PhysRevSTAB.15.030707>>url:https://doi.org/10.1103/PhysRevSTAB.15.030707||shape="rect"]]
94
95 **b) Synchronization and Electron Bunch Arrvial time Monitor (BAM)**
96
97 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,
98 //Femtosecond all-optical synchronization of an X-ray free-electron laser//,
99 Nature Communications **6**, 5938 (2015);
100 [[__http:~~/~~/dx.doi.org/10.1038/ncomms6938__>>url:http://dx.doi.org/10.1038/ncomms6938||shape="rect"]]
101 1. (((
102 (% class="pub-info" %)
103 A. Angelovski, et al.
104 //Evaluation of the cone-shaped pickup performance for low charge sub-10 fs arrival-time measurements at free electron laser facilities//
105 Phys. Rev. ST Accel. Beams **18**, 012801 (2015)
106 [[https:~~/~~/doi.org/10.1103/PhysRevSTAB.18.012801>>url:https://doi.org/10.1103/PhysRevSTAB.18.012801||shape="rect"]]
107 )))
108
109 ----
110
111 = User Facility/Beamline descriptions and Reviews =
112
113 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,
114 //The soft X-ray free-electron laser FLASH at DESY: beamlines, diagnostics, and end stations//,
115 New J. Phys. **11**, 023029 (2009);
116 [[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"]]
117
118 **Reviews**
119
120 1. Jörg Rossbach, Jochen R. Schneider, Wilfried Wurth,
121 //10 years of pioneering X-ray science at the Free-Electron Laser FLASH at DESY//,
122 Physics Reports **808**, 1-74 (2019);
123 [[https:~~/~~/doi.org/10.1016/j.physrep.2019.02.002>>url:https://doi.org/10.1016/j.physrep.2019.02.002||shape="rect"]]
124 1. Jochen R. Schneider,
125 //FLASH - from accelerator test facility to the first single-pass soft x-ray free-electron laser//,
126 J. Phys. B: At. Mol. Opt. Phys. **43**, 194001 (2010);
127 [[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"]]
128 1. J. Feldhaus,
129 //FLASH - the first soft x-ray free electron laser (FEL) user facility//,
130 J. Phys. B: At. Mol. Opt. Phys. **43**, 194002 (2010);
131 [[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"]]
132
133 == PG monochromator beamline ==
134
135 1. M. Martins, M. Wellhöfer, J.T. Hoeft, W. Wurth, J. Feldhaus, and R. Follath,
136 //Monochromator beamline for FLASH//,
137 Rev. Sci. Instrum. **77**, 115108 (2006);
138 [[http:~~/~~/dx.doi.org/10.1063/1.2364148>>url:http://dx.doi.org/10.1063/1.2364148||shape="rect"]]
139 1. N. Gerasimova, S. Dziarzhytski, J. Feldhaus,
140 //The monochromator beamline at FLASH: performance, capabilities and upgrade plans//,
141 Journal of Modern Optics **58**, 1480-1485 (2011); 
142 [[http:~~/~~/dx.doi.org/10.1080/09500340.2011.588344>>url:http://dx.doi.org/10.1080/09500340.2011.588344||shape="rect"]]
143
144 == THz Beamline ==
145
146 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,
147 //New infrared undulator beamline at FLASH//,
148 Infrared Phys. Technol. **51**, 423-425 (2008);
149 [[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"]]
150 1. E. Zapolnova, , T. Golz, R. Pan, K. Klose, S. Schreiber and N. Stojanovic.
151 //THz pulse doubler at FLASH: double pulses for pump–probe experiments at X-ray FELs//,
152 J. Synchrotron Rad. **25**, 39-43 (2018);
153 [[https:~~/~~/doi.org/10.1107/S1600577517015442>>url:https://doi.org/10.1107/S1600577517015442||shape="rect"]]
154 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,
155 //Photon diagnostics at the FLASH THz beamline//,
156 J. Synchrotron Rad. **26**, 700-707 (2019);
157 [[https:~~/~~/doi.org/10.1107/S1600577519003412>>url:https://doi.org/10.1107/S1600577519003412||shape="rect"]]
158
159 == CAMP chamber and BL1 (after 2014) ==
160
161 1. (((
162 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,
163 //CAMP@FLASH: an end-station for imaging, electron- and ion-spectroscopy, and pump–probe experiments at the FLASH free-electron laser,//
164
165 J. Synchrotron Rad. **25**(5), 1529 - 1540 (2018)
166 [[http:~~/~~/dx.doi.org/10.1107/S1600577518008585>>url:http://dx.doi.org/10.1107/S1600577518008585||shape="rect"]]
167 )))
168 1. (((
169 {{expand title="LCLS CAMP and pnCCD reference"}}
170 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,
171 //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//,
172 Nucl. Instrum. Methods A **614**, 483–496 (2010);
173 [[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"]]
174 {{/expand}}
175 )))
176
177 == Reaction Microscope (ReMi) at FL26 ==
178
179 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,
180 //Reaction Microscope Endstation at FLASH2//,
181 J. Synchrotron Rad. **26** (2019);
182 [[https:~~/~~/doi.org/10.1107/S1600577519002236>>url:https://doi.org/10.1107/S1600577519002236||shape="rect"]]
183 1. Severin Meister, Hannes Lindenblatt, Florian Trost, Kirsten Schnorr, Sven Augustin, Markus Braune, Rolf Treusch, Thomas Pfeifer, Robert Moshammer,
184 Atomic, Molecular and Cluster Science with the Reaction Microscope Endstation at FLASH2,
185 Appl. Sci. **10**, 2953 (2020);
186 [[https:~~/~~/doi.org/10.3390/app10082>>url:https://doi.org/10.3390/app10082||shape="rect"]]
187
188 == HEXTOF momentum microscope (mostly) at PG2 ==
189
190 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,
191 //Time- and momentum-resolved photoemission studies using time-of-flight momentum microscopy at a free-electron laser//,
192 Rev. Sci. Instrum. **91**, 013109 (2020);
193 [[https:~~/~~/doi.org/10.1063/1.5118777>>url:https://doi.org/10.1063/1.5118777||shape="rect"]]
194 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"]]
195
196 == MULTIP chamber ==
197
198 (% style="margin-left: 30.0px;" %)
199 Example experiments (on molecules, clusters and liquid jets) carried in the MULTIP chamber:
200
201 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,
202 //Generation and characterization of ultrathin free-flowing liquid sheets//,
203 Nature Comm. **9**, 1353 (2018);
204 [[http:~~/~~/dx.doi.org/10.1038/s41467-018-03696-w>>url:http://dx.doi.org/10.1038/s41467-018-03696-w||shape="rect"]]
205 1. (((
206 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,
207 //A sensitive EUV Schwarzschild microscope for plasma studies with sub-micrometer resolution//,
208 Rev. Sci. Instr. **89**, 023703 (2018);
209 [[http:~~/~~/dx.doi.org/10.1063/1.5007950>>url:http://dx.doi.org/10.1063/1.5007950||shape="rect"]]
210 )))
211 1. (((
212 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,
213 //Resolving Ultrafast Heating of Dense Cryogenic Hydrogen//,
214 Phys. Rev. Lett. **112**, 105002 (2014);
215 [[http:~~/~~/dx.doi.org/10.1103/PhysRevLett.112.105002>>url:http://dx.doi.org/10.1103/PhysRevLett.112.105002||shape="rect"]]
216 )))
217 1. (((
218 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,
219 //Generation of the simplest rotational wave packet in a diatomic molecule: Tracing a two-level superposition in the time domain//,
220 Phys. Rev. A **85**, 052503 (2012);
221 [[http:~~/~~/dx.doi.org/10.1103/PhysRevA.85.052503>>url:http://dx.doi.org/10.1103/PhysRevA.85.052503||shape="rect"]]
222 )))
223
224 (% style="margin-left: 30.0px;" %)
225 Additional XUV spectrometers: Knick-Spec (1.), HiTraX (2.)
226
227 1. (((
228 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,
229 //Hidden Charge States in Soft-X-Ray Laser-Produced Nanoplasmas Revealed by Fluorescence Spectroscopy//,
230 Phys. Rev. Lett. **112**, 183401 (2014);
231 [[http:~~/~~/dx.doi.org/10.1103/PhysRevLett.112.183401>>url:http://dx.doi.org/10.1103/PhysRevLett.112.183401||shape="rect"]]
232 )))
233 1. R.R. Fäustlin, U. Zastrau, S. Toleikis, I. Uschmann, E. Förster and Th. Tschentscher,
234 //A compact soft X-ray spectrograph combining high efficiency and resolution//,
235 JINST **5**, P02004 (2010);
236 [[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"]]
237
238 == MUSIX chamber ==
239
240 1. M. Beye, R.Y. Engel, J.O. Schunck, S. Dziarzhytski, G. Brenner, P.S. Miedema,
241 //Non-Linear Soft X-Ray Methods on Solids with MUSIX - the Multi-Dimensional Spectroscopy and Inelastic X-Ray Scattering Endstation//,
242 J. Phys.: Condens. Matter **31**, 014003 (2019)**,**
243 [[https:~~/~~/doi.org/10.1088/1361-648X/aaedf3>>url:https://doi.org/10.1088/1361-648X/aaedf3||shape="rect"]]
244
245 == URSA-PQ chamber ==
246
247 (% style="text-align:left" %)
248 1. (((
249 Jan Metje, Fabiano Lever, Dennis Mayer, Richard James Squibb, Matthew S. Robinson, Mario Niebuhr, Raimund Feifel, Stefan Düsterer, Markus Gühr,
250 //URSA-PQ: A Mobile and Flexible Pump-Probe Instrument for Gas Phase Samples at the FLASH Free Electron Laser//,
251 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;"]]
252 )))
253
254 == Split and Delay Units: ==
255
256 === At beamline PG2 ===
257
258 1. F. Sorgenfrei, W.F. Schlotter, T. Beeck, M. Nagasono, S. Gieschen, H. Meyer, A. Föhlisch, M. Beye, and W. Wurth,
259 //The extreme ultraviolet split and femtosecond delay unit at the plane grating monochromator beamline PG2 at FLASH//,
260 Rev. of Sci. Instr. **81**, 043107 (2010);
261 [[http:~~/~~/dx.doi.org/10.1063/1.3374166>>url:http://dx.doi.org/10.1063/1.3374166||shape="rect"]]
262
263 === At beamline BL1 /CAMP ===
264
265 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,
266 //XUV double-pulses with femtosecond to 650 picoseconds separation from a multilayer mirror based split-and-delay unit at FLASH//,
267 J. Synchr. Rad. **25**, (% class="ica_pages" %)1517-1528(%%) (2018);
268 [[https:~~/~~/doi.org/10.1107/S1600577518006094>>url:https://doi.org/10.1107/S1600577518006094||shape="rect"]]
269
270 === At beamline BL2 ===
271
272 1. M. Wöstmann, R. Mitzner, T. Noll, S. Roling, B. Siemer, F. Siewert, S. Eppenhoff, F. Wahlert and H. Zacharias,
273 //The XUV split-and-delay unit at beamline BL2 at FLASH//,
274 J. Phys. B: At. Mol. Opt. Phys. **46**, Special Issue: Frontiers of FEL Science, 164005 (2013);
275 [[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"]]
276 1. R. Mitzner, B. Siemer, S. Roling, M. Wöstmann, T. Noll, F. Siewert, A.A. Sorokin, M. Richter, K. Tiedtke, H. Zacharias,
277 //A new soft x-ray autocorrelator – direct evaluation of the temporal properties of FEL pulses at 24 nm//,
278 Proceedings SRI 2009, AIP Conference Proceedings **1234**, pp. 19-22 (2010);
279 [[http:~~/~~/dx.doi.org/10.1063/1.3463172>>url:http://dx.doi.org/10.1063/1.3463172||shape="rect"]]
280
281 === At beamlines FL24/FL23 ===
282
283 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
284 //The soft X-ray and XUV split-and-delay unit at beamlines FL23/24 at FLASH2//
285 J. Synchrotron Rad. (%%)**30**(% style="color:#000000" %), (% class="ica_pages" %)479-489 (2023)(%%)
286 (% 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"]]
287 1. M. Dreimann, S. Roling, F. Wahlert, S. Eppenhoff, M. Kuhlmann, S. Toleikis, M. Brachmanski, R. Treusch, E. Plönjes, H. Zacharias,
288 //A XUV and soft X-ray split-and-delay unit for FLASH2//,
289 Proc. SPIE **11776**, EUV and X-ray Optics, Sources, and Instrumentation; 117760R (30 April 2021);
290 [[https:~~/~~/doi.org/10.1117/12.2597647>>url:https://doi.org/10.1117/12.2597647||shape="rect"]]
291
292 == Fast Switching Mirror (BL beamlines) ==
293
294 1. R. Sternberger, M. Sachwitz, A. Donat, U. Gensch, R. Heller, LV. Vu, U. Hahn, H. Schulte-Schrepping, K. Tiedtke,
295 //A fast switching mirror unit at FLASH//,
296 Nucl. Instrum. Methods A **635**, S47-S51 (2011);
297 [[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"]]
298 1. J. Good, N. Leuschner, J. Nagler, F. Perlick, M. Sachwitz  and L.V. Vu,
299 //A Fast Switching Mirror Unit at FLASH//,
300 J. Phys.: Conf. Series **425**, 122008 (2013);
301 [[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"]]
302
303 == 4-mirror polarizer for circular polarization (BL beamlines) ==
304
305 1. C. von Korff Schmising et al.,
306 //Generating circularly polarized radiation in the extreme ultraviolet spectral range at the free-electron laser FLASH//,
307 Review of Scientic Instruments 88 053903 (2017);
308 [[https:~~/~~/doi.org/10.1063/1.4983056>>url:https://doi.org/10.1063/1.4983056||shape="rect"]]
309
310 == Fast shutter (BL, PG, and FLASH2 beamlines) ==
311
312 1. (((
313 E. Plönjes and K. Tiedtke,
314 //The Soft X-ray Free-Electron Laser FLASH at DESY//
315 in Optical Technologies for Extreme-Ultraviolet and Soft X-ray Coherent Sources,
316 edited by F. Canova and L. Poletto (Springer Series in Optical Sciences, Vol. 197, Springer, Heidelberg, 2015);
317 )))
318
319 == Photon diagnostics papers ==
320
321 === **a) Gas Monitor Detector (GMD)** ===
322
323 1. Andrey A. Sorokin, Yilmaz Bican, Susanne Bonfigt, Maciej Brachmanski, Markus Braune, Ulf Fini Jastrow, Alexander Gottwald, Hendrik Kaser, Mathias Richter and Kai Tiedtke,
324 //An X-ray gas monitor for free-electron lasers//,
325 J. Synchrotron Rad. **26**, 1092-1100 (2019);
326 [[https:~~/~~/doi.org/10.1107/S1600577519005174>>url:https://doi.org/10.1107/S1600577519005174||shape="rect"]]
327 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,
328 //Gas-detector for X-ray lasers//,
329 J. Appl. Phys. **103**, 094511 (2008);
330 [[http:~~/~~/dx.doi.org/10.1063/1.2913328>>url:http://dx.doi.org/10.1063/1.2913328||shape="rect"]]
331 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,(%%)
332 (% 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" %),(%%)
333 (% 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;"]]
334
335 === **b) VLS Online Spectrometer** ===
336
337 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,
338 //First results from the online variable line spacing grating spectrometer at FLASH//,
339 Nucl. Instr. and Meth A **635**, S99–S103 (2011);
340 [[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"]]
341
342 **see also "Kalypso detector"**
343
344 1. Rota L et al.,
345 (% class="title-text" %)//KALYPSO: Linear array detector for high-repetition rate and real-time beam diagnostics//, (%%)
346 Nucl. Instr. and Meth. A 936 10-13 (2018)
347 [[https:~~/~~/doi.org/10.1016/j.nima.2018.10.093>>url:https://doi.org/10.1016/j.nima.2018.10.093||shape="rect"]]
348
349 === **c) FLASH1 Tunnel Spectrometer** ===
350
351 *
352 ** ===
353
354 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,
355 //Spectroscopic characterization of vacuum ultraviolet free electron laser pulses//,
356 Opt. Lett. **31**, 1750-1752 (2006);
357 [[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;"]]
358
359 === **d) Compact Spectrometer** ===
360
361 *
362 ** ===
363
364 1. F. Frassetto, S. Coraggia, S. Dziarzhytski, N. Gerasimova, L. Poletto,
365 //Extreme-ultraviolet compact spectrometer for the characterization of the harmonics content in the free-electron-laser radiation at FLASH//,
366 J. Synchrotron Rad. **19**, 596-601 (2012);
367 [[http:~~/~~/dx.doi.org/10.1107/S0909049512022224>>url:http://dx.doi.org/10.1107/S0909049512022224||shape="rect"]]
368 1. Fabio Frassetto, Siarhei Dziarzhytski, Natalia Guerassimova and Luca Poletto,
369 //Compact spectrometer for on-line photon diagnostics at FLASH//,
370 J. Phys.: Conf. Ser. **425**,122010 (2013);
371 [[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"]]
372 1. F. Frassetto et al.,
373 (% class="title-text" %)//Compact spectrometer for photon diagnostics of the extreme-ultraviolet free-electron-laser radiation//, (%%)
374 Nucl. Instrum. Meth. A 635 S94-98 (2011)
375 [[https:~~/~~/doi.org/10.1016/j.nima.2010.11.004>>url:https://doi.org/10.1016/j.nima.2010.11.004||shape="rect"]]
376
377 === **e) Online photoionization spectrometer (OPIS)** ===
378
379 1. (((
380 Markus Braune, Jens Buck, Marion Kuhlmann, Sören Grunewald, Stefan Düsterer, Jens Viefhaus, Kai Tiedtke
381 //Non-invasive online wavelength measurements at FLASH2 and present benchmark.//
382 Proc. PhotonDiag2017,
383 J. Synchrotron Rad. **25**, 3–15 (2018)
384 (% style="color:#3366ff" %)__[[https:~~/~~/doi.org/10.1107/S1600577517013893>>url:https://doi.org/10.1107/S1600577517013893||shape="rect" style="color: rgb(51,102,255);"]]__
385 )))
386 1. Markus Braune, Günter Brenner, Siarhei Dziarzhytski, Pavle Juranić, Andrey Sorokin, Kai Tiedtke,
387 //A non-invasive online photoionization spectrometer for FLASH2//,
388 Proc. PhotonDiag2015,
389 J. Synchrotron Rad. **23**, 10-20 (2016);
390 [[__http:~~/~~/dx.doi.org/10.1107/S1600577515022675__>>url:http://dx.doi.org/10.1107/S1600577515022675||shape="rect"]]
391 1. Wellhöfer, J.T. Hoeft, M. Martins, W. Wurth, M. Braune, J. Viefhaus, M. Richter, K. Tiedtke,
392 //Photoelectron spectroscopy as non-invasive method to monitor SASE-FEL radiation//,
393 JINST **3**, P02003 (2008);
394 [[__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"]]
395
396 === **f) Gotthard detector** ===
397
398 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,
399 //Spectrometer for shot-to-shot photon energy characterization in the multi-bunch mode of the free electron laser at Hamburg//,
400 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"]]
401
402 === **g) KALYPSO detector** ===
403
404 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,
405 //Linear array detector for online diagnostics of spectral distributions at MHz repetition rates//,
406 J. Synchrotron Rad. **26**, 1514-1522 (2019);
407 [[https:~~/~~/doi.org/10.1107/S1600577519007835>>url:https://doi.org/10.1107/S1600577519007835||shape="rect"]]
408
409 === **h) Timing tools (photon arrival time monitors)** ===
410
411 *
412 ** ===
413
414 1. E. Zapolnova, R. Pan, T. Golz, M. Sindik, M. Nikolic, M. Temme, M. Rabasovic, D. Grujic, Z. Chen, S. Toleikis, N. Stojanovic,
415 //XUV-driven plasma switch for THz: new spatio-temporal overlap tool for XUV−THz pump−probe experiments at FELs//,
416 J. Synchrotron Rad. **27**, 11-16 (2020);
417 [[https:~~/~~/doi.org/10.1107/S1600577519014164>>url:https://doi.org/10.1107/S1600577519014164||shape="rect"]]
418 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,
419 //Plasma switch as a temporal overlap tool for pump-probe experiments at FEL facilities//,
420 JINST **7**, P08007 (2012);
421 [[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"]]
422 1. M. Drescher, U. Frühling, M. Krikunova, Th. Maltezopoulos, M. Wieland,
423 //Time-diagnostics for improved dynamics experiments at XUV FELs//,
424 J. Phys. B, **43**, 194010 (2010);
425 [[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"]]
426 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,
427 //Single-shot timing measurement of extreme-ultraviolet free-electron laser pulses,//
428 New Journal of Physics **10**, 033026 (2008);
429 [[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"]]
430 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,
431 //A femtosecond X-ray/optical cross-correlator//,
432 Nature Photonics **2**, 165-169 (2008);
433 [[__http:~~/~~/dx.doi.org/10.1038/nphoton.2007.298__>>url:http://dx.doi.org/10.1038/nphoton.2007.298||shape="rect"]]
434
435 === **i) XUV Pulse Length measurements** ===
436
437 *
438 ** ===
439
440 1. **(overview)**
441 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,
442 //Development of experimental techniques for the characterization of ultrashort photon pulses of extreme ultraviolet free-electron lasers//,
443 Phys. Rev. STAB **17**, 120702 (2014);
444 [[__http:~~/~~/dx.doi.org/10.1103/PhysRevSTAB.17.120702__>>url:http://dx.doi.org/10.1103/PhysRevSTAB.17.120702||shape="rect"]]
445 1. **(THz streaking - different pulse durations)**
446 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(%%)
447 //Single-shot temporal characterization of XUV pulses with duration from ~~10 fs to ~~350 fs at FLASH//
448 J. Phys. B: At. Mol. Opt. Phys. (2020)
449 (% class="Object" %)__[[https:~~/~~/doi.org/10.1088/1361-6455/ab9c38>>url:https://doi.org/10.1088/1361-6455/ab9c38||shape="rect"]]__
450 1. (((
451 **(THz streaking - statistical analysis)**
452 I. J. Bermúdez Macias, S. Düsterer, R. Ivanov, J. Liu, G. Brenner, J.Rönsch-Schulenburg, M.K. Czwalinna, and M. V. Yurkov,
453 //Study of temporal, spectral, arrival time and energy fluctuations of SASE FEL pulses//,
454 Optics Express 29, 10491-10508 (2021); 
455 __[[https:~~/~~/doi.org/10.1364/OE.419977>>url:https://doi.org/10.1364/OE.419977||shape="rect" style="letter-spacing: 0.0px;"]]__
456 )))
457
458 {{expand title="Further references - Click here to expand..."}}
459 1. **(general overview - not only FLASH)**
460 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,
461 //Ultrashort Free-Electron Laser X-ray Pulses//,
462 Appl. Sci. **7**, 915 (2017);
463 __[[http:~~/~~/dx.doi.org/10.3390/app7090915>>url:http://dx.doi.org/10.3390/app7090915||shape="rect"]]__
464 1. **(THz streaking)**
465 R. Ivanov, J. Liu, G. Brenner, M. Brachmanski, S. Düsterer,
466 //FLASH free-electron laser single-shot temporal diagnostic: terahertz-field-driven streaking//,
467 Special Issue (PhotonDiag2017),
468 J. Synchrotron Rad**. 25, **26-31 (2018);
469 [[https:~~/~~/doi.org/10.1107/S160057751701253X>>url:https://doi.org/10.1107/S160057751701253X||shape="rect"]]
470 1. **(THz streaking)**
471 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,
472 //Ultrafast X-ray pulse characterization at free-electron lasers//,
473 Nature Photonics **6**, 852-857 (2012);
474 [[http:~~/~~/dx.doi.org/10.1038/NPHOTON.2012.276>>url:http://dx.doi.org/10.1038/NPHOTON.2012.276||shape="rect"]]
475 1. **(THz streaking)**
476 U. Frühling, M. Wieland, M. Gensch, T. Gebert, B. Schütte, M. Krikunova, R. Kalms^^.^^, F. Budzyn, O. Grimm, J. Rossbach, E. Plönjes, M. Drescher,
477 //Single-shot THz field driven X-ray streak-camera//,
478 Nature Photonics **3**, 523-528 (2009);
479 [[http:~~/~~/dx.doi.org/10.1038/nphoton.2009.160>>url:http://dx.doi.org/10.1038/nphoton.2009.160||shape="rect"]]
480 1. **(spectral measurements)**
481 R. Engel, S. Düsterer, G. Brenner, and U. Teubner,
482 //Quasi-real-time photon pulse duration measurement by analysis of FEL radiation spectra//,
483 Proc. PhotonDiag2015,
484 J. Synchrotron Rad. **23**, 118-122 (2016);
485 [[__http:~~/~~/dx.doi.org/10.1107/S1600577515022997__>>url:http://dx.doi.org/10.1107/S1600577515022997||shape="rect"]]
486 1. (((
487 **(spectral and electron measurements, LOLA)**
488 Behrens C. , Gerasimova N., Gerth Ch., Schmidt B., Schneidmiller E. ,Serkez S., Wesch S., Yurkov, M.  
489 //Constraints on photon pulse duration from longitudinal electron beamdiagnostics at a soft X-ray free-electron laser//
490 Phys. Rev. STAB **15**, 030707 (2012);
491 [[http:~~/~~/dx.doi.org/10.1103/PhysRevSTAB.15.030707>>url:http://dx.doi.org/10.1103/PhysRevSTAB.15.030707||shape="rect"]]
492 )))
493 1. (((
494 **(reflectivity change on solids)**
495 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,
496 //Single-shot pulse duration monitor for extreme ultraviolet and X-ray free-electron lasers//,
497 Nature Comm. **4**, 1731 (2013);
498 [[http:~~/~~/dx.doi.org/10.1038/ncomms2754>>url:http://dx.doi.org/10.1038/ncomms2754||shape="rect"]]
499 )))
500
501
502 {{/expand}}
503
504
505 === **j) Wavefront Sensor and Wigner Distribution measurements** ===
506
507 *
508 ** ===
509
510 1. B. Keitel, E. Plönjes, S. Kreis, M. Kuhlmann, K. Tiedtke, T. Mey, B. Schäfer, K. Mann,
511 //Hartmann wavefront sensors and their application at FLASH//,
512 Proc. PhotonDiag2015,
513 J. Synchrotron Rad. **23**, 43-49 (2016);
514 [[http:~~/~~/dx.doi.org/10.1107/S1600577515020354>>url:http://dx.doi.org/10.1107/S1600577515020354||shape="rect"]]
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
520 {{expand title="Further References: click here to expand..."}}
521 1. T. Mey, //Radiation characteristics of extreme UV and soft X-ray sources//
522 PhD Thesis, Georg-August-Universität Göttingen.
523 Göttingen Series in X-ray Physics; 15 (2015), Universitätsverlag Göttingen, Göttingen, ISBN13: 978-3-86395-211-2;
524 [[__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)
525 1. T. Mey, B. Schäfer, K. Mann, B. Keitel, M. Kuhlmann, and E. Plönjes,
526 //Wigner distribution measurements of the spatial coherence properties of the free-electron laser FLASH//
527 Optics Express **22**, 16571 (2014);
528 [[__http:~~/~~/dx.doi.org/10.1364/OE.22.016571__>>url:http://http/dx.doi.org/10.1364/OE.22.016571||shape="rect"]]
529 1. B. Flöter, //Strahlcharakterisierung von Freie-Elektronen-Lasern im weichen Röntgen-Spektralbereich// 
530 PhD Thesis, Georg-August-Universität Göttingen,
531 Göttingen Series in X-ray Physics; 8 (2012), Universitätsverlag Göttingen, Göttingen, ISBN13: 978-3-86395-074-3;
532 [[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)
533 {{/expand}}
534
535
536 ----
537
538 = Pump-Probe Laser systems =
539
540 **a) FLASH2**
541
542 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,
543 Versatile OPCPA Pump-Probe Laser System for the FLASH2 XUV FEL Beamline at DESY,
544 //2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)//, Munich, Germany, 2019, pp. 1-1;
545 [[http:~~/~~/dx.doi.org/10.1109/CLEOE-EQEC.2019.8871596>>url:http://dx.doi.org/10.1109/CLEOE-EQEC.2019.8871596||shape="rect"]]
546 1. N. Schirmel, S. Alisauskas, T. Hülsenbusch, B. Manschwetus, C. Mohr, L. Winkelmann, U. Große-Wortmann, J. Zheng, T. Lang, and I. Hartl,
547 //Long-Term Stabilization of Temporal and Spectral Drifts of a Burst-Mode OPCPA System//,
548 in //Conference on Lasers and Electro-Optics//, OSA Technical Digest (Optical Society of America, 2019), paper STu4E.4.;
549 [[https:~~/~~/doi.org/10.1364/CLEO_SI.2019.STu4E.4>>url:https://doi.org/10.1364/CLEO_SI.2019.STu4E.4||shape="rect"]]
550
551 **b) FLASH1**
552
553 1. H. Redlin, A. Al-Shemmary, A. Azima, N. Stojanovic, F. Tavella, I. Will, S. Düsterer,
554 //The FLASH pump-probe laser system: Setup, characterization and optical beamlines//.,
555 Nucl. Instrum. Methods A **635**, 88–93 (2011);
556 [[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"]]
557 1. **(FEL-laser synchronization)**
558 S. Schulz, M. K. Czwalinna, M. Felber, P. Prędki, S. Schefer, H. Schlarb, U. Wegner,
559 //Femtosecond-precision synchronization of the pump-probe optical laser for user experiments at FLASH//,
560 Proc. SPIE **8778**, Advances in X-ray Free-Electron Lasers II: Instrumentation, 87780R (May 3, 2013);
561 [[http:~~/~~/dx.doi.org/10.1117/12.2021572>>url:http://dx.doi.org/10.1117/12.2021572||shape="rect"]]
562
563
564 **c) pump-probe data analysis**
565
566 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,
567 //Jitter-Correction for IR/UV-XUV Pump-Probe Experiments at the FLASH Free-Electron Laser//,
568 New J. Phys. **19**, 043009 (2017),
569 [[https:~~/~~/doi.org/10.1088/1367-2630/aa652d>>url:https://doi.org/10.1088/1367-2630/aa652d||shape="rect"]]
570
571 **d) HHG laser source at FL26/ReMi**
572
573 1. (((
574 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,
575 //Synchronized beamline at FLASH2 based on high-order harmonic generation for two-color dynamics studies//,
576 Rev. Sci. Instrum. **92**, 123004 (2021);
577 [[https:~~/~~/doi.org/10.1063/5.0063225>>url:https://doi.org/10.1063/5.0063225||shape="rect"]]
578 )))
579 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
580 Trost, Severin Meister, Patrizia Schoch, Rolf Treusch, Robert Moshammer, Ingmar Hartl, Uwe Morgner, and Milutin Kovacev,
581 //A synchronized VUV light source based on high-order harmonic generation at FLASH//,
582 Sci. Rep. **10**, 6867 (2020);
583 (% 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"]]
584
585 = Data analysis =
586
587 **Sorting data**
588
589 1. Dennis Mayer, Fabiano Lever and Markus Gühr,  ** (sorting GMD, BAM and Spectrum)**
590 (% style="letter-spacing:0.0px" %)//Data analysis procedures for time-resolved x-ray photoelectron spectroscopy at a SASE free-electron-laser,//(%%)
591 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;"]]
592 1. (((
593 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)**(%%)
594 (% style="letter-spacing:0.0px" %)//An open-source, end-to-end workflow for multidimensional photoemission spectroscopy//,
595 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;"]]
596 )))
597 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)**
598 //Jitter-Correction for IR/UV-XUV Pump-Probe Experiments at the FLASH Free-Electron Laser//,
599 New J. Phys. **19**, 043009 (2017),
600 [[https:~~/~~/doi.org/10.1088/1367-2630/aa652d>>url:https://doi.org/10.1088/1367-2630/aa652d||shape="rect"]]
601
602 ----
603
604 = Other references =
605
606 **Damage Tresholds of optical components, start at TTF1**
607
608 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,
609 Conductors, semiconductors, and insulators irradiated with shortwavelength free-electron laser,
610 J. Appl. Phys. **101**, 043107 (2007);
611 [[http:~~/~~/dx.doi.org/10.1063/1.2434989>>url:http://dx.doi.org/10.1063/1.2434989||shape="rect"]]
612
613 **Study of fluorescent crystals for beam profile imaging, start at TTF1**
614
615 1. Kirm, A. Andrejczuk, J.Krzywinski, and R. Sobierajski,
616 //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//,
617 phys. stat. sol. (c) **2**, 649-652 (2005);
618 [[__http:~~/~~/dx.doi.org/10.1002/pssc.200460255__>>url:http://dx.doi.org/10.1002/pssc.200460255||shape="rect"]]
619
620 **Study of carbon coatings for FEL mirrors,  start at TTF1**
621
622 1. Steeg, L. Juha, J. Feldhaus, S. Jacobi, R. Sobierajski, C.Michaelsen, A. Andrejczuk, and J. Krzywinski,
623 //Total reflection amorphous carbon mirrors for vacuum ultraviolet free electron lasers//,
624 Appl. Phys. Lett. **84**, 657-659 (2004);
625 [[__http:~~/~~/dx.doi.org/10.1063/1.1645320__>>url:http://dx.doi.org/10.1063/1.1645320||shape="rect"]]
626 {{/layout-cell}}
627 {{/layout-section}}
628 {{/layout}}