Optical Diagnostics tight environment high radiation area

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Presentation transcript:

Optical Diagnostics tight environment high radiation area Thomas Tsang tight environment high radiation area non-serviceable area passive components optics only, no active electronics back illuminated with a single fiber laser - pulsed laser transmit image through flexible fiber bundle

Optical Diagnostics Thomas Tsang

Optical Diagnostics Thomas Tsang

Optical Diagnostics Thomas Tsang

Optical Diagnostics Thomas Tsang object image lens lens fiber bundle

The maximum dispersal velocity of the mercury drops is ~ 10 m/s E951 – Hg jet results Hg jet target The diameter of the mercury jet is ~1 cm traveling to the right in a speed of ~2.5 m/s with an interaction length of ~12 cm. The light illumination is in a diameter of ~10 cm. BNL data @ 3.8 TP 16 frames, at 1 ms/frame, 0.15 μs exposure time pulsed by a NIR laser 8 W peak power field of view ~10 cm diameter CERN data 0, 0.75, 2, 7, and 18 ms frames. The electronic shutter speed is 25 μs Illuminated by a 3 mW CW red laser The maximum dispersal velocity of the mercury drops is ~ 10 m/s

E951 – more Hg jet results 100 µs 10 µs 1 µs No evident of back propagating to the nozzle Hg break up ~40 us after proton impact

E951 – more Hg jet results 1 TP 2.6 TP 3.7 TP Hg droplets velocities increase roughly with proton beam energy