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.
On Wednesday, January 14, 2026, a workshop "Radiation Damage" will take place at SOLEIL.
The plenary talks will cover the research themes of the following SOLEIL user communities:
- Soft matter
- Geoscience
The parallel sessions will consist of original scientific presentations selected from submitted abstracts.
Two social and discussion sessions will be organized at SOLEIL:
- Thursday afternoon, January 15, 2026, alongside the « The Synchrotron Community » Posters session, company booths, and a buffet dinner.
- Friday morning, January 16, 2026, during the Scientific Posters session followed by the award ceremony for the best student poster and company booths.
Satellites and tutorials will also be held on Friday afternoon, January 16, 2026, at SOLEIL. Further details about the satellites and tutorials will be communicated later.
A thematic workshop "Radiation Damage" will be held on Wednesday 14th of January, 2026 at SOLEIL.
Further information will be available soon.
Download 
SUM2026 preliminary programme (222.31 KB)
Wednesday, January 14th, 2026
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SOLEIL Auditorium - Main Building |
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10:00 - 17:00 |
Workshop Radiation Damage – S2UO (Amélie BORDAGE, Charlotte CATROUILLET, Simona RANERI), Amélia Suzuki, SOLEIL staff |
Thursday, January 15th, 2026
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09:00 - 10:00 |
Registration & coffee |
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10:00 - 10:10 |
Welcome / Introduction, S2UO Chair – Amélie BORDAGE |
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10:10 - 10:50 |
The word of SOLEIL General Director – Jean SUSINI |
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10:50 - 11:35 |
PLENARY TALK – SOFT MATTER |
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11:35 - 12:05 |
The word of SOLEIL Science Division – Eva PEREIRO, Amina TALEB |
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12:05 - 12:30 |
Open questions session - S2UO, AFURS, ESUO, PRC |
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12:30 - 14:00 |
Lunch |
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14:00 - 15:45 |
Parallel sessions (Oral communications) – 5 different rooms • Structural Biology (Synchrotron Beamlines and CryoEM) • Chemistry & Soft Matter (Characterization of structure and properties of chemical materials, reactivity, catalysis, chemical surfaces and interfaces / Soft matter) • Diluted matter • Geosciences / Environment / Cultural Heritage • Physics & Advanced Materials (Structural, electronic and magnetic properties of matter / Physical surfaces and interfaces) |
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15:45 - 16:15 |
Coffee break |
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16:15 - 18:30 |
Parallel sessions (Oral communications and Flash posters) – 5 different rooms • Biology and Health • Chemistry & Soft Matter (Characterization of structure and properties of chemical materials, reactivity, catalysis, chemical surfaces and interfaces / Soft matter) • Diluted matter • Geosciences / Environment / Cultural Heritage • Physics & Advanced Materials (Structural, electronic and magnetic properties of matter / Physical surfaces and interfaces) |
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18:30 - 20:00 |
« The Synchrotron Community » Posters session |
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20:00 - 21:30 |
Dinner |
Friday, January 16th, 2026
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SOLEIL Auditorium - Main Building |
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9:00 - 9:45 |
PLENARY – GEOSCIENCES |
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9:45 - 11:45 |
Scientific Posters session - Coffee break |
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11:45 - 12:00 |
Award of the best student poster |
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12:00 - 13:30 |
Lunch |
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13:30 - 15:00 |
Visit of 3 SOLEIL Beamlines: DESIRS, PX1, SIXS |
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13:30 - 16:30 |
Tutorials will be announced on September |
Scientific Committee
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BIOLOGY / HEALTH |
CULTURAL HERITAGE / ENVIRONEMENT / ARCHAEOLOGY / GEOSCIENCES |
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Paloma FERNANDEZ VARELA |
Charlotte CATROUILLET |
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DILUTED MATTER |
MATTER & MATERIAL PROPERTIES: STRUCTURE, ORGANISATION CHARACTERISATION, ELABORATION |
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Pierre ASSELIN |
Amélie BORDAGE |
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ELECTRONIC AND MAGNETIC PROPERTY OF MATTER – SURFACES AND INTERFACES |
CHEMISTRY AND PHYSICO-CHEMISTRY - REACTIVITY IN SITU - SOFT MATTER |
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Sara GONZALEZ |
Luis CARDENAS |
Local Organizing Committee
- 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
Access to SOLEIL
If you come by car:
Geographic Address:
Synchrotron SOLEIL
l'Orme des Merisiers
Départementale 128
91190 Saint Aubin
GPS coordinates:
Latitude: 48.711922
Longitude: 2.146156
at the intersection of RD306 and D128
If you come by public transport:
From PARIS and CHARLES-DE-GAULLE airport
RER B direction SAINT-RÉMY-LÈS-CHEVREUSE until:
the station "MASSY-PALAISEAU" then BUS n°91-06 B or C direction SAINT-QUENTIN GARE, stop "L'ORME DES MERISIERS".
Timetable bus 91-06
the station "LE GUICHET" then join the bus station, take bus n°9, direction SACLAY, stop "L'ORME DES MERISIERS".
Timetable bus 9
station "GIF SUR YVETTE", take bus n° 10, stop SAINT AUBIN
Timetable bus 10
From Orly Airport, take the ORLYVAL, get off at ANTONY, take the RER B (see above) or take the BUS n°91-10 direction "Christ / N3"
Timetable RER.
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