International Day of Light (16 May) - Educational Offers

A range of selected offers (demo and hands-on experiments, out-of-school educational offers, historical aspects, etc.) are available on a dedicated page of the SPS website.

Welcome to the Swiss Physical Society !

Joint Annual Meeting 2021

The next annual meeting will take place at the University of Innsbruck, in the week of 30 August - 3 September 2021. The well established tradition of organising the conference every second year jointly with the Austrian Physical Society (ÖPG) will be continued, again in collaboration with CHIPP and SFB BeyondC. An interesting and rich program is thus guaranteed.

Save the date !

It is your conference, so we welcome contributions from all topical fields.

General Information

Abstract Submission and Registration


  • The SPS Communications No. 64 will appear presumably in June 2021.

Marie-Emmanuelle Couprie wins the Charpak-Ritz Award 2021

The Charpak-Ritz Prize 2021 is awarded to Marie-Emmanuelle Couprie, Researcher at the 2.75 GeV electron synchrotron SOLEIL, located south of Paris, for her outstanding contributions in:

light sources using particle accelerators to emit synchrotron radiation of high spectral purity and high degrees of longitudinal and transverse coherence, in particular her research programme in recent years moved towards compact and free electron lasers (FEL). As a major actor in a very competitive research field, Marie-Emmanuelle Couprie achieved outstanding results relevant for the physics and technology of accelerators at the core of the synchrotron light emitted by FELs. The jury appreciated also the excellent and very fruitful collaborations at the international level and with the Swiss community at Paul Scherrer Institute in Villigen /Switzerland for magnetic measurements.


Marie-Emmanuelle Couprie, researcher at Synchrotron SOLEIL, head of the Magnetism and Insertion Device group and in charge of piloting the Free Electron Laser activities, she is a world-wide known FEL specialist, expert of accelerator physics and innovative scientific technologies.

Her outstanding records span the entire FEL theory, FEL dynamics (chaos, non-linear dynamics, microwave instabilities) and the interplay with electron beam evolution. She has played a crucial role for the development of the first FEL user applications in the UV range with pump probe two color experiments.

Marie-Emmanuelle has brought a unique contribution to the understanding and optimization of the performance of the FEL and she has pioneered the successful experimental demonstration of seeding a FEL with High-order Harmonic Generation in gas (HHG).

She has an outstanding track record of referred publications and invitations to conferences. Her strong implication in the development of technology with Industries (mirrors, insertions devices, cutting edge instrumentation like streak camera, dissector,..) resulted in a successful development of high quality mirrors for the inherently large optical cavity of the FEL, initiating collaborations with international companies.

Her expertise has been naturally dedicated to the short pulses and coherent synchrotron radiation issue. She is head of the COXINEL (COherent Xray source INferred from Electrons accelerated by Laser) project, 2012-ongoing, Principal investigator of the ERC Advanced Grant, 2014-2019 for the development of laser plasma accelerated based undulator and free electron laser radiation where she demonstrates her capabilities in attracting talents and in cross-fertilizing a large diversity of world-wide collaborations.

Her unique talents in science and her fluency in foreign languages beyond English allowed her to join several invited professor positions in Japan, Russia, Italy, and USA. She has collaborated with PSI for magnetic measurements and currently she co-chairs the Insertion Device task group of LEAPS (League of European Accelerator-based Photon Sources), in charge of WP6 of the InfraInnov-proposal.



Wilhelm Conrad Röntgen Symposium

On Saturday 18 September 2021, a public symposium is dedicated to the physicist Wilhelm Conrad Röntgen (1845 - 1923). In 2020 his 175th birthday and the 125th anniversary of his discovery of X-rays should have been celebrated, but the occasion had to be shifted to 2021 due to the pandemics. The symposium will take place at the ETH Zürich / Hönggerberg. Several talks will highlight Röntgen's biography, as well as the current state of research and applications, in which X-rays play a fundamental role.

Since the combination of history and modern research is particularly attractive to young people, the organizing societies plan a special program in the morning before the Röntgen Symposium, where selected students, namely winners of the SwissPhO and similar competitions, can visit physics laboratories on Hönggerberg and get first-hand information about current research activities.

The public is cordially invited to attend the symposium lectures that will be given in English; admission is free and registration is not required.

The Young Talents Day and the Wilhelm Conrad Röntgen Symposium is jointly organized by the Swiss Physical Society SPS, the Physikali­sche Gesellschaft Zürich PGZ, and the Swiss Academy of Sciences SCNAT.

Symposium program:

  • 13:15 - 14:00: Ralph Claessen, Universität Würzburg, Röntgen's discovery: from serendipity to scientific revolution
  • 14:00 - 14:45: Marco Stampanoni, ETH Zürich, 125 years of X-ray imaging and still eager to push further
  • 14:45 - 15:15: Kaffepause
  • 15:15 - 15:45: Clemens Schulze-Briese, Dectris Ltd. Baden, X-rays in industry and society, what we do today and what can be done tomorrow
  • 15:45 - 16:15: Davide Bleiner, EMPA, Progress in small scale X-ray lasers
  • 16:15 - 16:45: Stéphane Paltani, Université de Genève, The revolution of X-ray astronomy
  • 16:45 - 17:45: Apéro