Optical Diagnostics T. Tsang BNL (Aug. 4, 2006). Optical Diagnostics tight environment high radiation area non-serviceable area passive components optics.

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Presentation transcript:

Optical Diagnostics T. Tsang BNL (Aug. 4, 2006)

Optical Diagnostics tight environment high radiation area non-serviceable area passive components optics only, no active electronics transmit image through flexible fiber bundle

Optical Diagnostics test target retroreflected illumination Spherical mirror laser illumination image collection Works OK in this tight environment cm scale

Optical Diagnostics optical design in secondary containment One set of optics per viewport Conceptual design completed

Sumitomo imaging fibers – used in oue setup IGN-08/30 sample 0.3-meter 30,000 pixels Cost per foot $78$158$305 Cost in 10 meter $2574$5214$10065 Total cost for 4 fibers (40 meter) $10.3k$20.8k$40.3k Rad-hard to 1 Mrad

Fujikura imaging fibers – Not used Fujikura data, FIGH-30 A continuous 20-meter fiber 30,000 pixel imaging fiber Cost per foot $85$250$540 Cost in 10 meter $2805$8250$17.8k Total cost for 4 fibers (40 meter) $11.2k$33k$71.8k unofficial price info illumination uniformity image after a continuous 20-meter long fiber Cost/foot$210$371.4 Cost in 10 meter$6,935.65$12,256.7 Cost in 20 meter$15,607.9 Total cost for 4 fibers (40 meter) $27,742.6$49,026.8 official price info

Image quality comparison camera SMD illumination NIR pulse, 10 us/frame 30,000 pixels, 1-mm diameter FujikuraSumitomo 25 cm long30 cm long NO significant difference in image quality Should go with Sumitomo fibers (20 meters have been ordered) $210/foot$78/footdelivery in 4 weeksdelivery in 3 months FIGH NIGN-08/30

Grin objective lens imaging fiber – 1 mm illumination fiber fiber holder All-in-one optical setup

July 2006 Sumitomo IGN08/30 imaging fiber – 20-meter long NIR 100 µs/frame static image 800 x 50 x

New baseplate on mock-up – SMD camera dynamic image SMD camera: NIR pulse 100 µs/frame illumination fiber imaging fiber 25 Watt pulsed NIR laser one set of viewport optics SMD camera mock-up primary stationary image

New baseplate on mock-up – FastVision camera dynamic image FastVision camera: NIR pulse 2 ms/frame stationary image

10-meter imaging fibers will be assembled on mock-up primary dynamic image collection on both viewports will be tested 1 st camera will be SMD CCD 2 nd camera will be FastVision CCD 2 sets of viewport/optics/CCD will be ready by the end of August 3 more 10-meter long imaging fibers in order – viewports 3 rd & 4 th Summary

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