From the Airport :
IJCLab is located on the Université d’Orsay Paris-Sud Campus, 25 kilometres southwest of Paris. The easiest way to reach the Orsay campus is by taking the RER B line to the "Orsay-Ville" station (35 minutes from Châtelet, around 3.45 Euros for a single ticket and 1 hour from Charles de Gaulle).
From Charles de Gaulle airport :
To reach Orsay from Charles de Gaulle, one simply need to find the RER B station, the B line goes directly to Orsay (it takes around one h). The station is underneath Terminal 2, so it can be reached on foot from Terminal 2 and 3 (look for the "Paris by train" sign). If you arrive at Terminal 1, you must use the CDGVAL to reach "Terminal 3-Roissypole".
From Orly airport :
You will need to take the OrlyVal automatic train to Reach the RER B. After arriving at Antony; you can take the RER B in the direction of "Saint-Rémy-lès-Chevreuse" until "Orsay-Ville".
From the Paris train stations :
All of Paris train stations are connected to the Metro/RER network; Google map usually gives a good enough indication of how to reach your destination. People coming from CERN will most likely arrive at Gare de Lyon. From there, the most straightforward path is to take the RER A for one station to reach Châtelet-les-Halles, then you can change to take the RER B in the direction of "Saint-Rémy-lès-Chevreuse" until "Orsay-Ville" (be careful some train stop before Orsay).
At Orsay :
If you arrive at Orsay Using the RER B, two exits are possible from the station; the easiest one to take is the one at the head of the train. You will exit directly inside the University. Going straight from that exit for 100m, you will reach Building 100, where the workshop will be held. The main section will be in Auditorium Irène JOLIOT-CURIE; direct access is possible from the small car park next to the lab.
For more information, see the map below.
