Proposal Deadlines 
All Events The RIANA – TNA Access is Now Open. We accept user proposals based on a “continuous call” concept. Applications for Pre-proposals are not mandatory but are highly encouraged. The SME Call for Proposals is Now Open. The application is open throughout the project and implemented as a rolling call. The Call for Proposals for the 2026-II cycle for beamlines and microscopes is now open. The Call for Proposals for the 2026-II cycle will cover experiments scheduled from end of June to December 2026, except for the MX Beamlines, which will cover the entire year. For those users applying to MSPD, CLAESS and NOTOS: if your proposal goes to the waiting list, it can be moved to another beamline in case enough beamtime is available. Please, indicate your preferred beamline and the second option in the text of the proposal. Applications for researcher’s access to beamlines and electron microscopes will be submitted the user office portal. Twice a year, the CLS opens a Call for Proposals during which time proposals are accepted for peer-reviewed access to beamtime in the upcoming cycle. Each cycle is typically 6 months long. Successful proposals become active projects at the CLS and remain active for 2 years. During an open Call for Proposals, beamtime requests (BTRs) for active projects can also be submitted for consideration in the upcoming cycle. Round – 2026-II Beamtime period – July 2026 – January 2027 Deadline – 01.03.2026 (CET 11.59 pm) 2026/07/15 till 2026/09/15 Location: SOLEIL synchrotron, Saint-Aubin, France Deadline: September 15th, 2026, at 17:00 (CET) The call for Proposals for the 2027-I cycle will cover experiments scheduled during the first semester of 2027, except for BAGs, which will cover the entire year, and MX-BAGs, which will cover 2 years. 2026-2nd Call for Proposals at PAL-XFEL We invite scientists worldwide to submit proposals for general user beamtime experiments at PAL-XFEL (Pohang Accelerator Laboratory – X-ray Free Electron Laser) from August to December 2026. PAL-XFEL has three beamlines, two for hard X-ray experiments (XSS: X-ray Scattering and Spectroscopy, NCI: Nano Crystallography and Coherent Imaging) and one for soft X-ray experiments (SSS: Soft X-ray Scattering and Spectroscopy). The access to PAL-XFEL is open to the international scientific community, with the requirement that foreign users collaborate with Korean scientists being local contacts. Additionally, all applicants must contact PAL-XFEL staff scientists to discuss experimental details before submitting a beamtime proposal. There is no fee for proposal submission, but charges will apply when the experiment is conducted, as per government policy. Please register as a user of PAL and submit an application form of the PAL-XFEL proposal via the website (https://pal.postech.ac.kr/en/index.do). On behalf of the International Union of Crystallography (IUCr), it is with immense excitement and joy that we cordially extend our warmest invitation to you to join the IUCr for the Twenty-Seventh Congress and General Assembly, set to be held in the magnificent city of Calgary, located in the heart of Alberta, Canada from August 11th-18th, 2026. Calgary, a city renowned for its breathtaking natural beauty and warm hospitality, has been chosen as the host for this remarkable occasion. Nestled amidst stunning landscapes and boasting a rich cultural heritage, this vibrant metropolis promises to provide an unforgettable experience for all attendees. Mark your calendars now—IUCr2026 is coming up sooner than you think! The world’s largest gathering of structural scientists will take place August 11 – 18, 2026, in beautiful Calgary, Canada. You are invited to join thousands of scientists in this stunning location to share your most exciting research results, learn about recent breakthroughs in your field, expand your network of collaborators, and participate in the proceedings of the 27th Congress and General Assembly of the International Union of Crystallography. The International Conference on X-ray Microscopy (XRM) is a biennial event that has brought together experts in X-ray microscopes, imaging methods, and related techniques since 1983. Featuring lectures, research presentations, posters, exhibitors, and networking opportunities, XRM highlights the latest advancements in X-ray microscopy technology and its applications across various scientific fields. The 17th edition of the conference, XRM 2026, will take place from August 30 to September 4, 2026, in Campinas, state of São Paulo, Brazil. It will be hosted by the Brazilian Synchrotron Light Laboratory (LNLS), part of the Brazilian Center for Research in Energy and Materials (CNPEM). LNLS is home to Sirius, Brazil’s most advanced scientific infrastructure, which will be open for guided visits during the event. 𝗕𝗿𝗶𝗻𝗴 𝗶𝗻 𝘆𝗼𝘂𝗿 𝗲𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲 𝗮𝗻𝗱 𝗵𝗲𝗹𝗽 𝘀𝗵𝗮𝗽𝗲 𝘁𝗵𝗲 𝗳𝘂𝘁𝘂𝗿𝗲 𝗼𝗳 #𝘀𝘆𝗻𝗰𝗵𝗿𝗼𝘁𝗿𝗼𝗻 𝘀𝗰𝗶𝗲𝗻𝗰𝗲! We are pleased to announce the second UK Small Angle Scattering Users Meeting to be held at the Rutherford Appleton Laboratory (7th-9th September 2025). This event will showcase the diverse spectrum of activities in small angle scattering. The event will have a broad scientific focus with plenary and invited speakers, setting the scene for sessions covering areas of soft matter, magnetism, polymers, energy materials, structural biology and biophysics. The event will be focused on the science from UK users of the ILL, Diamond and ISIS facilities. In addition, the facilities will provide updates on recent developments and future plans. In the evenings Diamond House will host poster sessions and we encourage all members of the community to attend. UK users can claim up to 150 pounds funding towards travel expenses and we will provide accommodation which will be allocated on a first come first serve basis. The next General User Proposal Call opened on Monday, May 25, 2026 and the APS will be accepting new proposals and follow-on experiment time requests for the 2026-3 run cycle. Call closes: June 24, 2026, 14:00/2:00 p.m. (Chicago time) The 14th International Conference on Inelastic X-ray Scattering (IXS2026) will connect scientists from around the world who are pushing the boundaries of resonant and non-resonant inelastic X-ray scattering to tackle today’s most compelling scientific challenges. A vibrant community of researchers to share breakthrough discoveries, explore the latest advances in theory, experiment and instrumentation, and help shape the future of the field. Participants will gain new perspectives into how IXS techniques are transforming our understanding of emerging materials—from correlated electron systems to complex functional materials. IXS2026 will be held at the Advanced Photon Source at Argonne National Laboratory near Chicago, IL, USA. Training the next generation of X-ray facility users, the National X-ray School provides an intensive introduction to the breadth of techniques available at DOE light sources. This immersive school, which will take place at the Advanced Photon Source, Argonne National Laboratory, features a combination of traditional lectures, hands-on experiments and panel discussions. It is geared towards graduate students who are beginning their research projects. Lectures are delivered by researchers from academia, industry, and national laboratories and will cover basic tutorials on X-ray generation and source characteristics, the fundamentals of X-ray interactions with matter, and the application of X-ray microscopy, spectroscopy, and diffraction methods to a range of scientific subjects. Registration Now Open! Early Bird Pricing until August 20th, 2026! In a first-ever collaboration, three U.S. Department of Energy national laboratory light source facilities—the Advanced Light Source, the Linac Coherent Light Source, and the Stanford Synchrotron Radiation Lightsource—will come together for a joint users’ meeting, hosted at the SLAC National Accelerator Laboratory. This unprecedented scientific gathering brings together the Bay Area’s world-leading light source community in a single, week-long event. While Stanford Synchrotron Radiation Lightsource and Linac Coherent Light Source have traditionally hosted a joint users’ meeting, 2026 marks the inaugural participation of the Advanced Light Source as a full partner, creating a unique forum for cross-facility collaboration, shared vision, and scientific exchange. Each year, thousands of scientists from universities, national laboratories, and industry worldwide use the Advanced Light Source, Linac Coherent Light Source, and Stanford Synchrotron Radiation Lightsource to advance discovery across materials and energy sciences, chemistry, biology, medicine, environmental science, engineering, astronomy, and physics. XTOP 2026 brings together scientists working in X-ray diffractometry and reflectometry, coherent and conventional X-ray diffraction imaging and topography, as well as 2D and 3D X-ray imaging using phase contrast and complementary contrast mechanisms. The conference is a leading forum for laboratory- and synchrotron-based methods, instrumentation, and applications. Important dates: 21–23 September 2026, Lund, Sweden. Organised by the TR+ matrix at MAX IV in collaboration with LINXS. Join researchers from across structural biology, chemistry, physics, and synchrotron science to explore how time-resolved techniques are revealing the dynamic processes that govern biomolecular function. For the latest programme, practical information, and registration, please visit the TR+ Conference 2026 webpage. Registration deadline is August 20. —— The next submission for proposals for AP40 is open. The call for proposals for AP40 (October 2026 – March 2027) is open and proposals must be submitted by Wednesday 25th March 2026 at 17:00hrs UTC/GMT. For submissions of proposals please see here: Apply for beamtime. For updates to the XChem BAG submission see: XChem BAG submission For MX related proposals please refer to the MX Responsive Beamtime Guide. A 4-day summit of talks, posters, activities, and discussion 50 Years of XAFS Adventure in France: From the Pioneers of LURE to 4th-Generation Sources The XAFS50.FR conference will take place at SOLEIL from October 5 to 9, 2026. How can we observe the environment around atoms ? Over the past 50 years, XAFS (X-ray Absorption Fine Structure) spectroscopy has attracted researchers from every field thanks to its atomic and orbital selectivity combined with high sensitivity, offering unique access to the structural and electronic properties of materials. Developed in parallel with major advances in synchrotron radiation, XAFS has established itself step by step, becoming an essential tool for many scientific communities as well as for industry, and is now even beginning to appear as a laboratory-based technique with commercial spectrometers. The XAFS50.FR event will bring together historical insight and scientific perspectives, highlighting the pioneering experiments carried out at LURE (ACO, DCI, Super-ACO), the development of formalisms and the standardization of analyses, and the current progress at SOLEIL and the 4th generation source ESRF-EBS — a development that SOLEIL-II will soon join. The first workshop on Frontiers in Science at 4th generation synchrotron facilities, to be held October 12th & 13th, 2026 at SOLEIL. Its scientific scope is intentionally broad and includes the SOLEIL scientific challenges defined in the Conceptual Design Report and discussed in the science sections of SOLEIL. The workshop aims to address important science topicsand major scientific and societal challenges that could benefit from the future evolution of synchrotron facilities, gathering the community to exchange ideas and share breakthroughs. Invited talks from international leaders will review key scientific questions and discuss the associated research needs, including new capabilities in instrumentation, techniques, data analysis, and facility capacity with emphasis in imaging and coherence-based techniques. An additional goal is the complementarity with other large-scale facilities (such as TEMs, lasers, FELs, etc.). The 10th edition of the ‘Crystallography and Large Scale Facilities’ school will take place at the SOLEIL synchrotron site in Saint-Aubin from 2 to 6 November 2026. The main objectives of this thematic school are to enable participants to reconnect with the fundamentals of crystallography: acquiring the theoretical foundations of crystallography and its methods, and using software for the determination and refinement of crystal structures. All disciplinary fields utilising crystallography are covered. It provides a state-of-the-art overview of the possibilities offered by various experimental methods and, in particular, at large scale facilities (i.e. synchrotron, neutron and XFEL sources). At Master’s level, it is aimed at PhD students, postdoctoral researchers, engineers, lecturer-researchers and researchers, as well as current or potential users of major research facilities. This five-day course comprises lectures, tutorials and practical sessions. It enables participants to quickly engage with applications and to link the training directly to their research work. The course also fosters close interaction with lecturers from major French laboratories specialising in crystallography and experts in their fields, and facilitates exchanges with participants from various disciplines. The course, accommodation and meals will be provided at the SOLEIL synchrotron site. The language of instruction is English and places are limited to 27. SESAME is pleased to announce that applications are now open for the IAEA Annual Training Workshop on Synchrotron Techniques and Applications, which will take place at SESAME from 15 to 19 November 2026. The workshop is organised by the International Atomic Energy Agency (IAEA) in cooperation with SESAME. The workshop is designed for researchers with little or no previous experience in synchrotron radiation techniques who wish to gain practical knowledge of synchrotron-based experiments and learn how to prepare competitive beamtime proposals. Participants will receive hands-on training at several SESAME beamlines, complemented by lectures covering the principles and applications of synchrotron science. Researchers interested in participating are invited to consult the registration information available on the IAEA event page. Applications must be submitted through the IAEA InTouch+ platform via the appropriate national authority or invited organisation. The deadline for submission is 16 August 2026. Welcome to the 2026 joint meeting of the African Light Source (AfLS), the African Physical Society (AfPS), and co-convened with several other Pan African professional science societies. We hope that you will join us as we communicate and celebrate Big Science and Big Goals for Africa! Advanced light sources support multiple disciplines. We have a vision to establish an advanced light source on the African continent. 30 November – 4 December 2026 | Pattaya, Thailand The MEDSI School 2026, hosted by the Synchrotron Light Research Institute (SLRI), is an intensive international training program dedicated to the fundamental and advanced aspects of mechanical engineering in synchrotron radiation facilities. Engineering for modern light sources requires a unique blend of precision, stability, and high-performance vacuum technology. This school provides a deep-dive into the specialized mechanical systems that enable world-class X-ray science, covering the entire facility lifecycle from conceptual design to final experimental integration. We wish to inform you that the twelfth Call for proposals is now open. Proposals must be prepared and submitted through the online portal: https://sup.sesame.org.jo/pls/vuo/guest.startup We invite scientists worldwide to submit proposals for general user beamtime experiments at PAL-XFEL (Pohang Accelerator Laboratory – X-ray Free Electron Laser) from January to June 2027. PAL-XFEL has three beamlines, two for hard X-ray experiments (XSS: X-ray Scattering and Spectroscopy, NCI: Nano Crystallography and Coherent Imaging) and one for soft X-ray experiments (SSS: Soft X-ray Scattering and Spectroscopy). The access to PAL-XFEL is open to the international scientific community, with the requirement that foreign users collaborate with Korean scientists being local contacts. Additionally, all applicants must contact PAL-XFEL staff scientists to discuss experimental details before submitting a beamtime proposal. There is no fee for proposal submission, but charges will apply when the experiment is conducted, as per government policy. Please register as a user of PAL and submit an application form of the PAL-XFEL proposal via the website (https://pal.postech.ac.kr/en/index.do). Deadline: August 26, 2026, 23:59 (Korean Standard Time) The 15th call for proposals at the European X-Ray Free-Electron Laser Facility (European XFEL) is open until Thursday, 07 May 2026, at 16:00 CEST
Cycle Scheduling Period Call Open Call Close PRC Meeting
(Week of)Results Announced
(Week of)42 July-Dec 2026 Jan 28, 2026 Feb 25, 2026 Apr 20, 2026 May 4, 2026
Lock In Your Structure: Abstract Deadline February 15
HZB and KFS invite researchers to actively contribute to the planning of the BESSY III instruments. As part of the conceptual phase of this next-generation light source, we are looking for your ideas for experiments that will be enabled by BESSY III, with commissioning expected from 2035 onwards.
📍 Workshop | 2-3 September | BESSY II, Berlin-Adlershof
The workshop will focus on seven “signature instruments,” aiming to integrate the user perspective into their design and functionality. The goal: to develop a research infrastructure capable of meeting the scientific challenges of the future. We also welcome contributions to a dedicated session on data handling.
To register and to provide an abstract for a presentation and/or poster please access the registration form.
The deadline for submitting proposals is September 22nd, 2026 at 23:59 (Jordan time).
Before preparing your proposal, please carefully check all the information available at the address: https://www.sesame.org.jo/beamlines. We would recommend that you contact the relevant beamline staff to discuss your proposed project.Our Call for Proposals for beamtime between January to June of 2027 opened on July 22. Submit new proposals or beamtime requests before noon (CST) on Aug 19, 2026. Learn about our Peer Review Process prior to submitting your proposal as well as our Research Security Policies. Contact the User Services Office with any questions at uso@lightsource.ca. Learn more
(local Hamburg/Schenefeld time / Central European Summer Time)