Practical Information


Slots for cloud chamber workshop are available Monday - Friday between 9:00 and 17:15.

Please note: We do not offer any workshops on weekends or official CERN holidays. In addition, S'Cool LAB will be closed completely during our winter shutdown from 19 December 2017 to 15 January 2018.


The Cloud Chamber Workshop is designed for high school students and their teachers. 

The minimum required number of participants (including all students and accompanying adults) for this workshop is 12. 

The recommended size of the group is 24 participants per workshop.

If there are more than 24 participants in your group, it is still possible to to take part in this workshop: the group can be divided and multiple workshop sessions arranged.

All participants must be at least 14 years old at the time they participate in this workshop. 

Note: in some countries, the age counting system is different than in others. For S'Cool LAB, a student is considered to be 14 years old when they have already completed 14 years of life. For example, for a S'Cool LAB Day taking place on 2 June 2017, students must have been born on or before 2 June 2003.


The workshop is free of charge. However, we are grateful if teachers participate in our research and fill in a short questionnaire when applying.

Travel expenses, accomodation and meals will not be covered by CERN.


CERN unfortunately cannot offer school groups any space for pick-nicks. School groups taking part in cloud chamber workshops in S'Cool LAB on the same day as their standard CERN visit are expected to buy lunch in CERN's cafeteria, where there is a wide range of options to suit all tastes and budgets.

Eating and drinking are forbidden in S'Cool LAB.

Language requirements

Cloud chamber workshops in S'Cool LAB are delivered by S'Cool LAB tutors, who are specially-trained volunteers from among CERN's international scientific community. Every effort is made to recruit and train tutors who speak a variety of languages, and to match them to the requirements of visiting groups. However, this is not always possible, so experiment sessions must sometimes be offered in English instead. 

Physics requirements Please have a look here to find out what students should already know before taking part in this experiment.


All the equipment needed to build the cloud chambers is provided by S'Cool LAB. Students wishing to take notes should bring a pen & paper.

Location & Meeting Point

S'Cool LAB, CERN, Geneva, Switzerland

Meeting Point: CERN Reception (Bld. 33) Please arrive at the CERN Reception 15 minutes before your workshop starts.

Application procedure

  1. Book a standard visit for schools via the CERN visit service website.

  2. Once you have a confirmed visit at CERN, submit your application here.

  3. Our team will take care of your request within a week. We will reply whether your application was successful or not, depending on the availability of S'Cool LAB and the group details.

Due to the high number of requests, we cannot guarantee the LAB's availability on your requested dates. Note we do not consider any applications from groups without a confirmed CERN visit ID number. 


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