Z
Zheqiao Geng
Researcher at Paul Scherrer Institute
Publications - 25
Citations - 596
Zheqiao Geng is an academic researcher from Paul Scherrer Institute. The author has contributed to research in topics: Free-electron laser & Undulator. The author has an hindex of 8, co-authored 22 publications receiving 379 citations.
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Journal ArticleDOI
SwissFEL: The Swiss X-ray Free Electron Laser
Christopher J. Milne,Thomas Schietinger,M. Aiba,Arturo Alarcon,J. Alex,Alexander Anghel,Vladimir Arsov,Carl Beard,Paul Beaud,Simona Bettoni,M. Bopp,H. Brands,Manuel Brönnimann,Ingo Brunnenkant,Marco Calvi,A. Citterio,Paolo Craievich,Marta Csatari Divall,Mark Dällenbach,Michael D’Amico,Andreas Dax,Yunpei Deng,Alexander Dietrich,Roberto Dinapoli,Edwin Divall,Sladana Dordevic,Simon Ebner,Christian Erny,Hansrudolf Fitze,Uwe Flechsig,Rolf Follath,F. Frei,Florian Gärtner,Romain Ganter,Terence Garvey,Zheqiao Geng,I. Gorgisyan,C. Gough,A. Hauff,Christoph P. Hauri,Nicole Hiller,Tadej Humar,Stephan Hunziker,Gerhard Ingold,Rasmus Ischebeck,Markus Janousch,Pavle Juranić,M. Jurcevic,Maik Kaiser,Babak Kalantari,Roger Kalt,B. Keil,Christoph Kittel,Gregor Knopp,W. Koprek,Henrik T. Lemke,Thomas Lippuner,Daniel Llorente Sancho,Florian Löhl,C. Lopez-Cuenca,Fabian Märki,F. Marcellini,G. Marinkovic,Isabelle Martiel,Ralf Menzel,Aldo Mozzanica,Karol Nass,Gian Luca Orlandi,Cigdem Ozkan Loch,Ezequiel Panepucci,Martin Paraliev,Bruce D. Patterson,Bill Pedrini,Marco Pedrozzi,Patrick Pollet,Claude Pradervand,Eduard Prat,Peter Radi,Jean-Yves Raguin,S. Redford,Jens Rehanek,Julien Réhault,Sven Reiche,Matthias Ringele,J. Rittmann,Leonid Rivkin,Albert Romann,Marie Ruat,C. Ruder,Leonardo Sala,Lionel Schebacher,T. Schilcher,Volker Schlott,Thomas J. Schmidt,Bernd Schmitt,Xintian Shi,M. Stadler,L. Stingelin,Werner Sturzenegger,Jakub Szlachetko,D. Thattil,D. Treyer,A. Trisorio,Wolfgang Tron,S. Vetter,Carlo Vicario,Didier Voulot,Meitian Wang,Thierry Zamofing,Christof Zellweger,R. Zennaro,Elke Zimoch,Rafael Abela,Luc Patthey,Hans-Heinrich Braun +114 more
TL;DR: The SwissFEL X-ray Free Electron Laser (XFEL) facility as discussed by the authors started construction at the Paul Scherrer Institute (Villigen, Switzerland) in 2013 and will be ready to accept its first users in 2018 on the Aramis hard Xray branch.
Journal ArticleDOI
A compact and cost-effective hard X-ray free-electron laser driven by a high-brightness and low-energy electron beam
Eduard Prat,Rafael Abela,M. Aiba,Arturo Alarcon,J. Alex,Yunieski Arbelo,Christopher Arrell,Vladimir Arsov,Camila Bacellar,Camila Bacellar,Carl Beard,Paul Beaud,Simona Bettoni,Roger Biffiger,M. Bopp,Hans-Heinrich Braun,Marco Calvi,Ariana Cassar,Tine Celcer,Majed Chergui,Pavel Chevtsov,Claudio Cirelli,A. Citterio,Paolo Craievich,Marta Csatari Divall,Andreas Dax,Micha Dehler,Yunpei Deng,Alexander Dietrich,Philipp Dijkstal,Philipp Dijkstal,Roberto Dinapoli,Sladana Dordevic,Simon Ebner,Daniel Engeler,Christian Erny,Vincent Esposito,Vincent Esposito,Eugenio Ferrari,Uwe Flechsig,Rolf Follath,F. Frei,Romain Ganter,Terence Garvey,Zheqiao Geng,Alexandre Gobbo,C. Gough,A. Hauff,Christoph P. Hauri,Nicole Hiller,Stephan Hunziker,Martin Huppert,Gerhard Ingold,Rasmus Ischebeck,Markus Janousch,Philip J. M. Johnson,Steven L. Johnson,Steven L. Johnson,Pavle Juranić,M. Jurcevic,Maik Kaiser,Roger Kalt,B. Keil,Daniela Kiselev,Christoph Kittel,Gregor Knopp,W. Koprek,Michael Laznovsky,Henrik T. Lemke,Daniel Llorente Sancho,Florian Löhl,Alexander Malyzhenkov,Giulia F. Mancini,Giulia F. Mancini,Roman Mankowsky,F. Marcellini,G. Marinkovic,Isabelle Martiel,Fabian Märki,Christopher J. Milne,Aldo Mozzanica,Karol Nass,Gian Luca Orlandi,Cigdem Ozkan Loch,Martin Paraliev,Bruce D. Patterson,Luc Patthey,Bill Pedrini,Marco Pedrozzi,Claude Pradervand,Peter Radi,Jean-Yves Raguin,S. Redford,Jens Rehanek,Sven Reiche,Leonid Rivkin,Albert Romann,Leonardo Sala,Mathias Sander,Thomas Schietinger,T. Schilcher,Volker Schlott,Thomas J. Schmidt,Mike Seidel,M. Stadler,L. Stingelin,C. Svetina,D. Treyer,A. Trisorio,Carlo Vicario,Didier Voulot,A. Wrulich,Serhane Zerdane,Elke Zimoch +113 more
TL;DR: In this article, the first lasing results of SwissFEL, a hard X-ray free-electron laser (FEL) that recently came into operation at the Paul Scherrer Institute in Switzerland, were presented.
Journal ArticleDOI
The SwissFEL soft X-ray free-electron laser beamline: Athos
Rafael Abela,Arturo Alarcon,J. Alex,Christopher Arrell,Vladimir Arsov,Simona Bettoni,M. Bopp,Christoph Bostedt,Christoph Bostedt,Hans Heinrich Braun,Marco Calvi,Tine Celcer,Paolo Craievich,Andreas Dax,Philipp Dijkstal,Sladana Dordevic,Eugenio Ferrari,Uwe Flechsig,Rolf Follath,F. Frei,Nazareno Gaiffi,Zheqiao Geng,C. Gough,Nicole Hiller,Stephan Hunziker,Martin Huppert,Rasmus Ischebeck,Haimo Jöhri,Pavle Juranić,Roger Kalt,Maik Kaiser,B. Keil,Christoph Kittel,René Künzi,Thomas Lippuner,Florian Löhl,F. Marcellini,G. Marinkovic,Cigdem Ozkan Loch,Gian Luca Orlandi,Bruce D. Patterson,Claude Pradervand,Martin Paraliev,Marco Pedrozzi,Eduard Prat,Predrag Ranitovic,Sven Reiche,Colette Rosenberg,S. Sanfilippo,Thomas Schietinger,Thomas J. Schmidt,Kirsten Schnorr,C. Svetina,A. Trisorio,Carlo Vicario,Didier Voulot,Ulrich Wagner,Hans Jakob Wörner,Adriano Zandonella,Luc Patthey,Romain Ganter +60 more
TL;DR: An overview is given of the SwissFEL soft X-ray free-electron laser (FEL) beamline, called Athos, and its numerous operation modes, and several key hardware components, which enable these modes.
Evaluation of Fast ADCs for Direct Sampling RF Field Detection for the European XFEL and ILC
Zheqiao Geng,Stefan Simrock +1 more
TL;DR: In this article, a fast ADC (ADS5474) was employed to measure the 1.3 GHz RF signal directly without frequency down conversion, and the Signal to Noise Ratio (SNR) of the ADC was studied for different RF input levels.
ARCHITECTURE DESIGN FOR THE SwissFEL LLRF SYSTEM
Zheqiao Geng,M. Broennimann,I.Brunnenkant,Alexander Dietrich,F. Gärtner,A. Hauff,M. Jurcevic,Roger Kalt,S.Mair,A.Řežaeizadeh,L.Schebacher,T. Schilcher,W.Sturzenegger +12 more
TL;DR: The architecture design of the LLRF system will be described in this paper with the focus on the fast networks, digital hardware, firmware and software.