The workshop will take place at the Amphithéâtre Bloch, which is located at the Institut de Physique Théorique (IPhT) of CEA-Saclay, near Paris.
A shuttle-bus to the IPhT will leave every day of the conference at 9:35am, sharp, from Le Guichet bus stop, that you can reach from Paris with the RER-B (~50 min), see the map.
From Paris or Charles-de Gaulle airport
Option 1: strongly preferred
Take RER B to Le Guichet (~50 min from Paris). Only the trains with destination Saint-Rémy-les-Chevreuse will stop at this station. Then you can either take the shuttle-bus reserved for the conference participants (50 seats max, it leaves at 9:35am), or transfer to the bus number 9 going in the direction of "Jouy-en-Josas" which are quite frequent (somewhat less after ~10am).
The bus requires an extra ticket "t+", sold for 2E if bought on board; these are the same tickets you would use for the underground in Paris. The bus station is 3 minutes walking from the RER B Le Guichet station, see map here.
Get off the bus N.9 at the stop "Orme des Merisiers" (~10 min). There is a gate for pedestrian access right across the street at the bus stop. After the gate, go right. Once you reach the road, go left. The IPhT is building 774 at the end of the road on the right-hand side (see map, approx. 5 minutes walk from the bus stop).
Take RER B to Massy-Palaiseau (~45 min from Paris). Then transfer to the 91-06 or 91-10 bus towards "Christ de Saclay". The bus stop is about a 3-4 minute walk from the train platforms (see map and map). Get off at the "Orme des Merisiers" stop*.
There is a gate for pedestrian access right across the street at the bus stop. After the gate, go right. Once you reach the road, go left. The IPhT is building 774 at the end of the road on the right-hand side (see map, approx. 5 minutes walk from the bus stop)
*Sometimes the 91-06 bus run only up to one stop earlier, "Joliot Curie"; in this unfortunate case just wait for the next bus, either 91-06, 91-10 or 9, in order to reach the "Orme des Merisiers" stop.
From Orly Airport: get to the Antony RER B station via Orlyval train shuttle. Then follow either direction 1 or 2 above.
You can check the train and bus schedules on the vianavigo.