Low Distortion Lens Design for Large Scintillators
- Nevada National Security Site, National Security Technologies, LLC, New Mexico Operations, Los Alamos, New Mexico, USA
- Los Alamos National Laboratory, Los Alamos, New Mexico, USA
Tomographic imaging of large objects from an x-ray source require a 240 mm square scintillator that is imaged onto a 90 mm square charge-coupled device (CCD) with <0.01% distortion. A large pellicle and internal folding mirror keep the optical elements and the CCD camera out of the x-ray beam path to minimize shielding requirements. Better imaging is needed for 2-D digital radiography and computer tomography (3-D) on the Los Alamos National Laboratory’s Microtron x-ray–generating source, a bremsstrahlung source with endpoint energies of 6, 10, 15, and 20 MeV. Large objects are placed into the x-ray beam and rotated between radiographs. X-rays are deposited into scintillators that are viewed with digital cameras. Better light gathering is needed because the scintillators emit low levels of light. Earlier imaging techniques used film in contact with the scintillator. Our design goal is to match the resolution of the digital camera system to that of the film. 3-D tomography requires extremely low distortion of the collected images.
- Research Organization:
- Nevada National Security Site/National Security Technologies,LLC
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA), Office of Defense Programs (DP)
- DOE Contract Number:
- DE-AC52-06NA25946
- OSTI ID:
- 1542644
- Report Number(s):
- DOE/NV/25946-3293; 978-1-943580-31-6
- Journal Information:
- Proceedings of Optical Society of America, International Optical Design Conference 2017 (online Technical Digest JTu5A.19 ), Conference: Optical Society of America, International Optical Design Conference, Denver, Colorado, July 9-13, 2017 https://www.osa.org/en-us/meetings/osa_meetings/optical_design_and_fabrication/international_optical_design_conference/
- Publisher:
- OSA—The Optical Society, 2010 Massachusetts Ave., N.W. Washington, D.C. 20036-1012 USA Tel: 1.202.223.8130
- Country of Publication:
- United States
- Language:
- English
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