Ultra-high speed burst-mode imager for multi-frame radiography

Conference · Fri Jan 01 04:00:00 EST 2010

DOI:https://doi.org/10.1016/j.nima.2010.11.051· OSTI ID:1028195

Kwiatkowski, Kris ^[1]; Nedrow, Paul ^[1]; Mariam, Fesseha ^[1]; Merrill, Frank E ^[1]; Morris, Chris L ^[1]; Saunders, Abdy ^[1]; Hogan, Gary ^[1]; Douance, Vincent ^[2]; Bal, Yibin ^[2]; Joshi, Atul ^[2]; Auyeung, John ^[2]

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1. Los Alamos National Laboratory
2. TELEDYNE IMAGING SENSORS

A 720 x 720 pixel hybrid-CMOS imager was fabricated by Rockwell Scientific (now Teledyne Imaging Sensors). Several cameras have been in operation for 5 years, in a variety of static and dynamic experiments, at the 800MeV proton radiography (pRAD) facility at the LANSCE accelerator. The cameras can operate with a per-pulse adjustable inter-frame time of 250ns to 2s, and with an exposure/integration-time as short as 150 ns. Given the 800 ms total readout time, the imager can be externally synchronized to 0.1-to-5Hz, 50-ns wide proton beam pulses, and record 1000-frame radiographic movies of 5-to-30 minute duration. The effectiveness and dependence of the global electronic shutter on the pixelated Si photo-sensor bias voltage is discussed. The spatial resolution dependence of the full imaging system on various monolithic and structured scintillators is presented. We also present features of a new-generation 10-frame, 1024 x 1024 pixel, 50-ns exposure, 12-bit dynamic range imager, which is now in the design phase.

• Research Organization: Los Alamos National Laboratory (LANL)
• Sponsoring Organization: DOE
• DOE Contract Number: AC52-06NA25396
• OSTI ID: 1028195
• Report Number(s): LA-UR-10-05541; LA-UR-10-5541
• Country of Publication: United States
• Language: English

Related Subjects

47 OTHER INSTRUMENTATION
CAMERAS
DESIGN
ELECTRIC POTENTIAL
PHOSPHORS
PROTON BEAMS
PROTON RADIOGRAPHY
PULSES
SENSORS
SHUTTERS
SPATIAL RESOLUTION