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! (NSTX is currently undergoing a $94 million upgrade and will reopen in 2014).

We offer open public tours the first and third Friday of every month except during holidays. (Pre-registration is required). Please note that we will not have a public tour on Feb. 20 when PPPL will be hosting the DOE's New Jersey Regional Middle School Science Bowl. Please email tours@pppl.gov to request a registration form. The public tour dates for 2015 are: Feb. 6, March 6, March 20, April 3, April 17, May 1, May 15, June 5, June 19, July 17, Aug. 7, Aug. 21, Sept. 4, Sept. 18, Oct. 2, Oct. 16, Nov. 6 and Nov. 20, Dec. 4 and Dec. 18. 

We also offer scheduled tours for large groups of 10 or more people who are high school age and older by request at least two weeks in advance. Our tours are generally held on weekdays between 9 a.m. and 2 p.m. Please note that we do not offer tours on weekends or holidays.Please email tours@pppl.gov to request a tour and give us two weekday dates when you would like to visit and some background on your group, including where your group is from, how many people are in your group, the age-range and the educational background of your group.

Please see our FAQs below for more information on your tour, security arrangements and other visitor information.


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 Dec. 24 and Jan. 4, 2014.  

How much do tours cost? 

All tours of PPPL are free. 

How do I register for an open public tour? 

Email tours@pppl.gov and we will send you a form to register for the tour. 

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? 

Email tours@pppl.gov and we will send you a form that will put you on our master list. You will need to send a list of all visitors by two weeks before your scheduled tour. You will also need to provide the following information for non-U.S. citizens:citizenship, date of birth, and place of birth. 

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?

Tours are open to all adults and students middle school age or older for groups of 10 or more people. Individuals and smaller groups may join larger groups.

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 if 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 notify us in advance 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