A Collaborative National Center for Fusion & Plasma Research


Tour Arrangements at the Princeton Plasma Physics Laboratory

Come see first-hand the exciting world of fusion energy research at PPPL! Visiting the U.S. Department of Energy’s Princeton Plasma Physics Laboratory is a great opportunity to get a first-hand view of the laboratory where the quest to harness the power of the sun and the stars through fusion energy is taking place.

Our free tours are led by engineers and physicists who can answer all your questions about magnetic fusion. View our new “Star Power” movie, take part in hands-on plasma demonstrations, visit the National Spherical Torus Experiment Control Room and see Quasar, our stellarator experiment! Our flagship experiment, the National Spherical Torus Experiment-Upgrade is currently operating and is usually not available for tours. Please use our new tour calendar to register for group tours or public tours by clicking on the following link

We offer open public toursthe first and third Friday of most months except during holidays. (Pre-registration is required). Please note that the tour is appropriate for children age 12 and older. Also, please note that while we welcome all visitors, we require additional information (citizenship, date of birth, and place of birth) for non-citizens. Each person attending the tour should fill out a separate form. Please go to our open public tours page and click on group tours to link to the calendar to register. 

We also offer scheduled group toursfor large groups of 10 to 40 people who are middle-school age or older a few days a week at 10 a.m. Please go to our group tours page and click on group tours to go to the calendar to register. 

Please note that we do not offer tours on weekends or holidays. We can occasionally accommodate tours tours of more than 40 people and tours at other times of the day during weekdays. Please email tours@pppl.gov for more information. 

Organizers will need to submit a full list with the names of everyone in your group and the following additional information for non-citizens: citizenship, date of birth, and place of birth. 


Where is PPPL located?

The Princeton Plasma Physics Lab is located at 100 Stellarator Road, Princeton, N.J. 08540.

Where can I get directions?

Click here for directions to the Laboratory.

When are tours held?

Public tours are held the first and third Friday of every month at 10 a.m. Other tours are generally held at 10 a.m. or at 2 p.m. on weekdays but that schedule is flexible. The Lab is closed on holidays and for winter break between Christmas and New Year's Day. The Lab is also closed on Memorial Day, the Fourth of July, Labor Day, Thanksgiving, and the day after Thanksgiving. 

How much do tours cost? 

All tours of PPPL are free. 

How do I register for an open public tour? 

Click on open public tours to go to our new open public tours registration page and click on open public tours to go to the calendar and register for the open public tour of your choice. 

What other information is required? 

Non-citizens must provide the following information: citizenship, date of birth, and place of birth.

How do I schedule a tour for my group or class? 

Go to our new group tours page and click on group tours to go to the calendar and register for the date of your choice. 

What identification do I need to show at the PPPL security booth?

Please be prepared to show a photo ID – such as a license for adult citizens and a school ID for minors.  Non-citizens should bring their passports.

Who can attend the tours?

Our  tours are open to all adults and age 12 and up.  

Is PPPL wheelchair accessible?  

Most of the facility is wheelchair accessible and there is a wheelchair on site available for tours. Please let us know on your registration form if your or someone in your group will need to use it so we can make it available for you.  

Are photos allowed?

Yes. You are welcome to take photos during your tour.  If you are using social media, please tag your photos with "PPPLab".

What other security rules does PPPL have?

Please abide by the following regulations for your own health and safety and the Laboratory’s security:

  •  Stay with your group and do not wander outside or inside the building by yourself.
  •  No briefcases or packages.
 No food or drinks.
  •  No high-heeled shoes, open-toed shoes, or sandals.

Where can I park?

Members of tour groups can park in our visitor’s parking lot. After leaving the security booth, drive straight ahead to the parking lot on the right, just past the main building on the left.

Can I eat in the cafeteria?

Please feel free to eat or get a cup of coffee at our cafeteria, which is open weekdays from 7 a.m. to 2 p.m. We ask that you note that you will be staying for lunch on your registration form and call our cafeteria manager Mark Gazo, 609-243-3350 if you have a large group joining us for lunch so we can make special arrangements.

Where is the auditorium?

The Melvin B. Gottlieb auditorium is directly to your left as you enter our main building.

Where are the restrooms?

Restrooms are available directly to your right as you enter the main building.   

Where can I purchase PPPL souvenirs?

You may be able to purchase souvenirs at our Princeton Plasma Hutch in our lobby. The Laboratory’s Plasma Hutch store has PPPL T-shirts, hats, sweatshirts, vests, mugs and other PPPL goodies available for sale. Please let us know in advance if you plan to visit.


U.S. Department of Energy
Princeton Plasma Physics Laboratory is a U.S. Department of Energy national laboratory managed by Princeton University.

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Princeton University
Princeton Plasma Physics Laboratory
P.O. Box 451
Princeton, NJ 08543-0451
GPS: 100 Stellarator Road
Princeton, NJ, 08540
(609) 243-2000