SUM2026
The 20th SOLEIL Users’ Meeting will take place from Thursday January 15th to Friday 16th, 2026 at SOLEIL.
This invaluable forum for the synchrotron radiation users’ community will provide the opportunity to exchange and learn about the evolution of the machine and the beamlines.
It will be also the occasion to share scientific, technical and practical issues about the synchrotron radiation use.
The plenary talks will cover recent research highlights of SOLEIL in the following areas:
- Soft Matter
- Geoscience
Scientific communications will be presented during three parallel sessions, selected from the submitted abstracts.
In the afternoon of January, 15th and 16th, a social time will be held at SOLEIL with stands from commercial exhibitors and the dinner buffet.
The novelty of this SUM2026 is the discussion times with two posters sessions: one dedicated to the synchrotron community (beamlines, scientific associations, …) and one dedicated to science.
The session dedicated to the synchrotron community, on 15/01, will newly offer time to discover all its sides and to discuss together as a community. For instance, the scientists of the beamlines will present an overview of their beamlines and their perspectives, while the scientific associations will present their goal and some of their actions.
The science session on 16/01, will be, as usual, dedicated to scientific results obtained (at least partially) thanks to SOLEIL, with a prize attributed to the best PhD student poster.
A multidisciplinary satellite workshop « Radiation Damage » will be held on Wednesday 14th of January, 2026 at SOLEIL.
A satellite meeting is organized for the French community of X-ray absorption spectroscopists at SOLEIL on Friday afternoon the 16th of January, 2026.
Radiation damage satellite workshop
The "Radiation Damage" thematic workshop is proposed in response to an issue raised by SOLEIL’s users in the framework of an S2UO survey. This workshop aims to train, inform, and initiate discussion among SOLEIL users. The program of the workshop is thought to be multidisciplinary, with general presentations and examples from several communities.
The roundtable has been designed to be as interactive and constructive as possible for all communities affected by radiation damage.
A tutorial on the RADDOSE-3D software, dedicated to predicting radiation damage, will conclude the day. Information about the software is available here: https://www.bioch.ox.ac.uk/garmangroup#tab-792756
To follow the tutorial, you must have previously installed the software on your personal computer. The software cannot be installed on an Apple computer.
The program is available below.
Wednesday, January 14th, 2026 Radiation damage satellite workshop SOLEIL Auditorium - Main Building
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09:00 - 09:30 | Registration – Welcome – Coffee |
09:30 – 09:40 | Introduction to the workshop Amélie Bordage - Institut de Chimie Moléculaire et des Matériaux d'Orsay, Orsay (France) - S2UO Chair |
09:40 – 10:25 | PLENARY TALK Radiation damage in macromolecular crystallography: What is it and why do we care? Prof. Elspeth Garman - Department of Biochemistry, Univ. of Oxford, Oxford (GB) |
10:25 – 11:00 | PLENARY TALK Beam damage and safe analysis: A study of how perception, perspective, and vocabulary shape the construction of risk Dr. Mathieu Thoury - IPANEMA, St Aubin (France) |
11:00 – 12:30 | A multidisciplinary viewpoint to radiation damage Stéphanie Belin, Christophe Sandt, Jean Susini - Synchrotron SOLEIL, Saint-Aubin, France Marine Fournier - LCPMR Sorbonne Université, Paris, France |
12:30 – 13:45 | Lunch |
13:45 – 14:30 | Introduction to round table Dr. Amelia Suzuki - Institute of Heritage Science ISPC-CNR of Florence, Florence (Italy) Dr. Marine Cotte - ESRF, Grenoble (France) |
14:30 – 16:00 | Interactive and multidisciplinary round table Dr. Amélie Bordage - Institut de Chimie Moléculaire et des Matériaux d'Orsay, Orsay (France) Dr. Laurent Tranchant – Synchrotron SOLEIL, Saint-Aubin (France) |
16:00 – 16:30 | Coffee Break |
16:30 – 17:20 | Tutorial The RADDOSE-3D software program Prof. Elspeth Garman - Department of Biochemistry, Univ. of Oxford, Oxford (GB) |
17:20 – 17:30 | Conclusion Myrtille Hunault - Synchrotron SOLEIL, Saint-Aubin, France Amélie Bordage - S2UO chair |
Tea-XAS Meeting
The TEA-XAS is a meeting dedicated to all SOLEIL users who use X-ray absorption spectroscopy. The objective of the TEA-XAS is twofold:
- To give information about the status of the XAS beamlines (SOLEIL, French CRG beamlines of the ESRF) as well as their projects.
- To provide space to the community for a discussion on your needs, expectations, questions, ideas, …
A project to unite the community of X-ray absorption spectroscopists is also under consideration, and this meeting of the French community will provide an opportunity to take stock on the project and discuss it together.
The afternoon will be divided into two parts: presentations of the beamlines by the XAS group leaders (SOLEIL, French CRG, ESRF), and an interactive roundtable discussion.
The programme is available below.
Please note that all the discussions will be held in French.
For more information, please contact sum2026@synchrotron-soleil.fr
Friday, January 16th, 2026 TEA-XAS Meeting SOLEIL Auditorium - Main Building
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13:30 - 13:35 | Introduction |
13:35 - 14:50 | Status and projects of the XAS beamlines and laboratory instruments Delphine Vantelon (SOLEIL), Olivier Proux (FAME/FAME-UHD), Marine Cotte (ESRF), Sophie Nowak (ITODYS) & Benoît Baptiste (IMPMC) |
14:50 - 15:00 | Status of the project to unite the French community of X-ray absorption spectroscopists Amélie BORDAGE - Institut de Chimie Moléculaire et des Matériaux d'Orsay, Orsay (France) |
15:00 - 16:00 | Interactive round table Amélie BORDAGE - Institut de Chimie Moléculaire et des Matériaux d'Orsay, Orsay (France) & Charlotte CATROUILLET - Institut de Physique du Globe de Paris, Paris (France), S2UO |
16:00 - 16:30 | Plenary discussion and conclusions |
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Download the programme on 'Downloads tab' at the bottom of the web page.
See the detailed programme here.
Thursday, January 15th, 2026
SOLEIL Auditorium - Main Building | |
09:00 - 10:00 | Registration & coffee |
10:00 - 10:10
| Welcome / Introduction, S2UO Chair – Amélie BORDAGE |
10:10 - 10:50 | Latest news from SOLEIL General Director – Jean SUSINI |
10:50 - 11:35 | PLENARY TALK – SOFT MATTER Structure, properties and reactivity of oxide nanoparticles in solution : synchrotron studies Olivier DIAT & Matthieu VIROT - Institut de Chimie Séparative de Marcoule (CEA, CNRS, ENSCM, Univ. Montpellier), Bagnols sur Cèze (France) |
11:35 - 12:05 | Towards SOLEIL II: The Experiment Division Perspective – Eva PEREIRO, Amina TALEB |
12:05 - 13:30 | Lunch |
13:30 - 15:40 | Parallel sessions – 5 different rooms
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15:40 - 16:10 | Coffee break |
16:10 - 18:20 | Parallel sessions – 5 different rooms
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18:30 - 20:00 | The Synchrotron Community Posters session Commercial Exhibitors / Aperitif |
20:00 - 21:30 | Dinner |
21:30 | Bus transfer |
Friday, January 16th, 2026
SOLEIL Auditorium - Main Building | |
9:00 - 9:45 | PLENARY – GEOSCIENCES Structure Surface reactivity of tubular Al/Si nanoparticles: interactions with nucleic acids and implications for prebiotic scenarios Jérôme ROSE – CEREGE, Aix-en-Provence (France) |
9:45 – 11:45
| Scientific Posters session - Coffee break |
11:45 - 12:00 | Award of the best student poster – Roger Fourme Prize Conclusion |
12:00 - 13:30 | Lunch |
13:30 - 15:00 | Visit of 4 Beamlines – DESIRS / MARS / PROXIMA 1 / SIXS |
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Scientific Committee
BIOLOGY / HEALTH | CULTURAL HERITAGE / ENVIRONEMENT / ARCHAEOLOGY / GEOSCIENCES |
| Paloma FERNANDEZ VARELA CNRS – on availability Lorella PASCOLO Institute for Maternal and Child Health - Burlo Garofolo Pediatric Institute - Trieste (Italy) | Charlotte CATROUILLET Institut de Physique du Globe de Paris Simona RANERI University of Florence - Department of Earth Sciences – Florence (Italy) |
DILUTED MATTER | MATTER & MATERIAL PROPERTIES: STRUCTURE, ORGANISATION CHARACTERISATION, ELABORATION |
| Pierre ASSELIN De la Molécule aux Nano-objets : Réactivité, Interactions et Spectroscopies - Paris Helgi Rafn HRODMARSSON Laboratoire inter-universitaire des systèmes atmosphèriques - Créteil | Amélie BORDAGE Institut de Chimie Moléculaire et des Matériaux d'Orsay - Orsay Eglantine BOULARD Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie - Paris |
ELECTRONIC AND MAGNETIC PROPERTY OF MATTER – SURFACES AND INTERFACES | CHEMISTRY AND PHYSICO-CHEMISTRY - REACTIVITY IN SITU - SOFT MATTER |
| Sara GONZALEZ Institut des Nanotechnologies de Lyon - Villeurbanne Fabien SILLY CEA SPEC - Gif-Sur-Yvette | Luis CARDENAS Université Lyon, Université Claude Bernard-Lyon 1, CNRS, IRCELYON - Villeurbanne Asma TOUGERTI Unité de Catalyse et de Chimie du Solide - Université de Lille – Villeneuve d’Ascq |
Local Organizing Committee
- Gaïa CAPILLIEZ
- Eliott COGNÉ, Synchrotron SOLEIL
- Mary-Anna DESTERMES, Synchrotron SOLEIL
- Camille ENJOMMET, Synchrotron SOLEIL
- Frédérique FRAISSARD, Synchrotron SOLEIL
- Jean-Marc LUCACCHIONI, Synchrotron SOLEIL
- France ROUET, Synchrotron SOLEIL
- Stéphanie YAO, Synchrotron SOLEIL
Registration is closed.
Deadline for registration: December 14th 2025
Registration fee is: 100 €.
It includes: attendance at the users meeting, buffets, lunches and coffee break
Please note that accommodation is NOT included in the registration fees. Please contact the Guest House directly to book a room (priority to students): Guesthouse.SOLEIL@elior-services.fr
| PARTICIPANT TYPE | AMOUNT |
| Participant* | 100€ VAT INCLUDED |
| Student, Invited speaker, member of Organisation Committee, SOLEIL | FREE |
*Participants from the same laboratory:
We propose, for the participants of a laboratory, the following rule:
from 1 to 4 participants: 100€
/ from the 5th participant: 50€
Payment modalities
Payment by order form for French public institutions
Please do not pay your fees.
Please send an order form (which is mandatory for French public institutions) to the following address: sum2026@synchrotron-soleil.fr
Please indicate the name(s) of the participant(s), the service code Chorus Pro and the users meeting reference: SUM2026 / AG 69250605
Payment by bank transfer
Thank you for transmitting your payment by bank transfer to the following account number:
BNP Paris Bas International Bank Account Number
(IBAN): FR76 3000 4006 8400 0100 8245 430
Bank Identification Code (BIC): BNPAFRPPIFO
Synchrotron SOLEIL
With mentioning your name and the users meeting reference: SUM2026 / AG 69250605
Payment by credit card
A payment online is possible: you just have to select this mode of payment when registering and to follow instructions.
Call for abstract is closed.
Deadlines for contributions:
- Oral communications: CLOSED
- Posters / Plenary and Invited talks: CLOSED
For the Posters session: “The Synchrotron Community” on Thursday 15th
- Please provide, as “Contribution” only the title and the authors (in INDICO)
For the Plenary and Invited talks and the Scientific Posters session on Friday 16th
- Please provide as “Contribution” an abstract that follows instructions below (in INDICO):
To submit an abstract please use ONLY the template below (in WORD or .rtf format). Any abstract which does not follow this format will be returned to the author. File size is limited to 4MB. |
Roger Fourme Prize
The best poster presented by a student will receive a prize offered by SOLEIL.
This is a mission to a congress or a school up to 1000 € (with original tickets).
The Prize will be awarded on Friday, January 16th, 2026 morning.
The students who have applied for the Best Poster Prize are required to attend the Friday, January 16th, 2026 morning session.
The candidates will be evaluated on the following criteria:
- Clear presentation
- Scientific interest
- Originality
- Visual aspects
The poster oral presentation in front of the jury should not exceed 4 minutes.
The S2UO committee will evaluate only the students who have applied for the Best poster Prize (Roger Fourme) when they have submitted their abstract.
Prize 2026
| 2026 - Muyan Zhou - Institut des NanoScience de Paris - Pairs, France Structure of Assemblies of Nanospheres Confined in Smectic Liquid Crystal Defects | L’abstract est disponible |
Stand offer for companies
Registration is closed.
The number of available booths has been reached.
Advertising
Registration for advertising insert is closed.
Deadline : December 14th 2025
The companies that so wish can insert an advertising page into the electronic abstract book of the Users’ Meeting, for an amount of 360,00 € all taxes included (300,00€ without taxes) per page.
Companies are requested to fill in the necessary form (download below) and to send it back to the following email adress: sum2026@synchrotron-soleil.fr
Please note that you need to send 1 page in A4 PDF format.
Exhibitors
Access to SOLEIL
List of hotels (not limited)
Maison d'Hébergement de SOLEIL - priority to students - Book your accommodation directly
L'Orme des Merisiers - 91190 GIF-SUR-YVETTE
Tel: +33(0)1 69 35 82 00
hebergement@synchrotron-soleil.fr
Hôtel Les Chevaliers des Balances - next to SOLEIL
Place de la Mairie - 91190 SAINT-AUBIN
Tél.: +33 (0)1 69 41 20 55 - Fax: +33 (0)1 69 85 50 75
E-mail: leschevaliersdesbalances@gmail.com
Web: www.leschevaliersdesbalances.fr
Hôtel Le Village**
4 rue Neuve - 91190 GIF-SUR-YVETTE
Tél.: +33 (0)1 69 28 82 51 - Fax: +33 (0)1 69 28 53 93
E-mail: hotel.le.village@wanadoo.fr
Web: http://hotellevillage.fr/
Hôtel d'Orsay - close to RER B
2 rue François Leroux - 91400 ORSAY
Tél.: +33 (0)1 64 86 17 47 - Fax: +33 (0)1 64 86 17 48
E-mail: hotel.orsay@orange.fr
Hôtel B&B
Plateau du Moulon - 91190 GIF-SUR-YVETTE
Tél.: +33 (0) 892 78 80 91 - Fax: +33 (0)1 69 35 34 59
Web: http://www.hotel-bb.com/
Hôtel Campanile Paris Sud
9 Ter Rue Joliot Curie - 91190 GIF-SUR-YVETTE
Tél.: +33 (0) 1 84 00 85 35
Web: https://www.campanile.com/fr/hotels/campanile-paris-saclay
Appart Hôtel Residhome Bures-Sur-Yvette La Guyonnerie
1 Rue de la Guyonnerie, 91440 BURES-SUR-YVETTE
Tél.: +33 (0) 1 64 86 36 00
Web: https://www.myresidhome.com/bures-sur-yvette/residhome-bures-la-guyonnerie/apparthotel-residence-hoteliere.html
For any questions, thank you to contact:
sum2026@synchrotron-soleil.fr
SOLEIL User Office
L’orme des Merisiers
Départementale 128
91190 Saint-Aubin
FRANCE