Goddard Space Flight Center
Radiation Effects Facility (GSFC REF)
Providing TID Services Since 1998
This Webpage Last Updated: April 14, 2009



Damage Van de Graaff, Steering Magnet and Test Chamber.


Radiation Sources:

Gamma Source: Two separate irradiators available; a low intensity large area source suitable for low intensity and very low intensity studies (ELDRS); and a medium intensity irradiator for typical NASA orbit/missions.

Particle Accelerators: Two 2MeV Van de Graaff (one for damage testing and one for instrument calibration) and a 150keV Potential Drop (instrument calibration).


Radiation damage testing of spacecraft electronics, solar cells and microcircuits; optical sensors, couplings, coatings, lenses and filters; spacecraft paints, coatings, blankets and structural materials;

Calibration and development of magnetospheric and inter planetary particle sensors, low energy X-ray and other radiation measuring instruments.


The Facility is available to NASA Centers, other Government Agencies, Contractors, Universities and Manufacturers, on an as-available basis.

Host Location:

GSFC, Greenbelt, MD, Owned by NASA, Operated by MEI Corp.

Contacts for Costs and Scheduling:

Gamma, Ken LaBel, 301-286-9936, Kenneth.A.Label@nasa.gov,

Accelerators, Stephen Brown 301-286-5795, Stephen.K.Brown@nasa.gov


GSFC Radiation Effects Database:


Gamma Ray Source:


2Mev Damage Study Accelerator:


2Mev and 120Kev Instrument Calibration Accelerators:


Test Chambers Available for Instrument Calibration:

The 20" x 20" Chamber:

The 17" diameter by 30" high chamber:

Test Chamber Cleanliness:

The chambers are pumped down and sustained by non-oil cryogenic vacuum systems. Contamination from uncured epoxy, silicone, machine oil, etc. can kill flight detectors. Please do not plan to use our chambers to out gas a prototype or flight unit immediately after it has been soldered or glued.

Other Possible Uses of the Chambers:

With some set up the test chambers could also be used for:


Damage Van de Graaff Test Chamber.


150Kev Accelerator, Steering Magnet, 20" x 20" Test Chamber,
Pumping Station and Turntable Controls.


Steering Magnet, Electrostatic Focus and 30" diameter x 38" high
Test Chamber for the Instrument Van de Graaff.

Clean Bench Assembly Area


20" x 20" Test Chamber, showing Beam Monitor,
Turntable, 2" Ports and 50-pin Cable.


Data Reduction and Ground Station Area, for the Instrument Van de Graaff,
showing space available, Cable Penetrations through wall, and peripherals.


17" x 30" Test Chamber for Instrument Van de Graaff.