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Laboratory for Advanced Photonics (LAP)
The Laboratory for Advanced Photonics is responsible for the design and the realisation of novel schemes for Insertion Devices, Optics, Photon Diagnostics and Instrumentation for the Swiss Light Source (SLS) as well as for the Swiss X-ray Free Electron Laser (SwissFEL). In collaboration with other divisions of PSI, we coordinate new large photon science projects, such as the SLS upgrade (SLS 2.0) and the second beamline of SwissFEL Athos.
Transmission measurement at the Bernina branch of the Aramis Beamline of SwissFEL
An international collaboration consisting of metrology and photon diagnostics groups Germany, the U.S.A., Switzerland, and Japan performed a set of cross-calibration measurements of optical properties on the Bernina branch of the Aramis beamline [1]. The collaboration saw the DESY-developed gas detector, a novel diamond detector from Brookhaven, and a room temperature radiometer from AIST in Japan placed at the Bernina end station and measure the absolute intensity of the FEL light as it passed through the optical elements. The cross-calibrated measurements used in conjuction with the photon beam intensity-gas (PBIG) monitor at the front end of the Aramis beamline to characterize the performance of the optical components on the Bernina branch and then compare them to the expected theoretical values. The measurements were performed at photon energies of 6.08 and about 7.22 keV.
Towards X-ray Transient Grating Spectroscopy at SwissFEL
The high brilliance of new X-ray sources such as X-ray Free Electron Laser opens the way to non-linear spectroscopies. These techniques can probe ultrafast matter dynamics that would otherwise be inaccessible. One of these techniques, Transient Grating, involves the creation of a transient excitation grating by crossing X-ray beams on the sample. Scientists at PSI have realized a demonstration of such crossing by using an innovative approach well suited for the hard X-ray regime.
Regisseure mit Zusatzaufgaben
Datenspeicher aus neuartigen Materialien sollen ermöglichen, Informationen auf kleinerem Raum viel schneller und energiesparender als bisher aufzuzeichnen. Filmaufnahmen mit dem Röntgenlaser zeigen, was im Inneren möglicher neuer Speichermedien passiert und wie sich die Prozesse, bei denen das Material zwischen zwei Zuständen wechselt, optimieren lassen.
MOOCs – a paradigm shift in education
In March 2018, the nine-week MOOC “Introduction to synchrotrons and x-ray free-electron lasers” (abbreviated to “SYNCHROTRONx”) came online via the edX provider of the École Polytechnique Fédérale de Lausanne (EPFL), created by Phil Willmott of the Swiss Light Source, Paul Scherrer Institute. “MOOC” is an acronym for “massive open online course”, a teaching platform started in the first decade of this century, which has become increasingly popular in the last five to six years. MOOCs have no limits to participation and are free. Some of the most popular MOOCs can attract many tens of thousands of participants. Even the most specialized subjects may have an initial enrollment of over a thousand, more than an order of magnitude larger than that typically found in traditional higher education. There were over 70 million MOOC enrollments covering nearly 10’000 subjects offered by the top five providers in 2017 alone!
Hollywood im Würenlinger Wald
Mit dem Röntgenlaser SwissFEL wollen Forschende am PSI Filme von Biomolekülen in Aktion produzieren. So lässt sich aufzeigen, wie unser Auge funktioniert oder wie neue Medikamente wirken.
A first glance at the SwissFEL x-rays wave-front
X-ray Free Electron Lasers (XFELs) combine the properties of synchrotron radiation (short wavelengths) and laser radiation (high lateral coherence, ultrashort pulse durations). These outstanding machines allow to study ultra-fast phenomena at an atomic level with unprecedented temporal resolution for answering the most intriguing open questions in biology, chemistry and physics.
First Single-Shot SASE spectra of SwissFEL successfully measured
The team of the Laboratory for Advanced Photonics (LAP) has succeeded to perform the first set of shot-to-shot measurements of the SwissFEL generated spectrum.
First Pilot Experiment at SwissFEL-Alvra: UV photo-induced charge transfer in OLED system
On the 17th of December 2017 SwissFEL saw its first pilot experiment in the Alvra experimental station of the SwissFEL ARAMIS beamline.
Erstes Experiment am SwissFEL erfolgreich durchgeführt
Die Jahre des sorgsamen Planens und Aufbauens haben sich ausgezahlt: An der neuesten Grossforschungsanlage des Paul Scherrer Instituts PSI – dem Freie-Elektronen-Röntgenlaser SwissFEL – wurde das erste Experiment erfolgreich durchgeführt. Damit wurden zwei Ziele erreicht: Erstens gibt es schon gleich ein neues wissenschaftliches Ergebnis. Zweitens wird damit das Zusammenspiel der vielen Einzelkomponenten der hochkomplexen Anlage optimiert.
