The workshop will be held in the Auditorium Joliot Curie of the Institut de Physique Nucleaire d'Orsay (IPN), France, about 30 km south of Paris
http://ipnwww.in2p3.fr/Infos-pratiques
IPN is located in the Faculty of Science of University Paris-Sud, nearby the "Orsay-Ville" station on the RER B line (from Paris, direction either "Saint-Remy les Chevreuse" or "Orsay-Ville" direction).
At the station "Orsay-Ville", take the exit with the corridor under the rails on your left, then the first street on the left, rue Georges Clémenceau ; then go straight.
The main entrance of IPN is in the building N°100 as indicated on the detailed map. The workshop will take place in the Auditorium Irène Joliot-Curie, building N°100.
Detailed map of IPNO https://indico.esss.lu.se/event/800/picture/2.pdf
Public transportation
The single ticket from "Paris" to "Orsay-Ville" is 4,35 €. The price of the “Origin-Destination ticket” depends on your trip. You can buy them individually or by packs of 10 (you can save 20% if you buy a pack)
Information on https://www.transilien.com/en/page-editoriale/about-individual-tickets
Train/metro map: http://www.ratp.fr/plan-interactif/
Other useful Links: