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SNS Video Foil Monitor

SNS Video Foil Monitor. Summary: Two radiation hardened video camera systems with associated image processing electronics will analyze the light emitted from the primary and secondary stripping foils. In addition, foil illumination by a lamp during the absence of beam

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SNS Video Foil Monitor

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  1. SNS Video Foil Monitor Summary: Two radiation hardened video camera systems with associated image processing electronics will analyze the light emitted from the primary and secondary stripping foils. In addition, foil illumination by a lamp during the absence of beam will allow visual inspection to confirm the foil’s mechanical integrity. Status: Preliminary Design Stage Investigating the possible information which can be derived from the spectra of light emitted from the foils. SNS Foil Video

  2. SNS Video Foil Layout Secondary (thick) Foil Camera Cubby Primary (thin) Foil Camera Cubby Estimated Radiation levels The main cause of loss at injection will be nuclear scattering at the thin carbon foil. Uncontrolled loss = 2.5W/m Produces about 250 R/hr at 1 ft. HEBT Beam SNS/AP Tech note 7 Camera to foil distance 5 meters SNS Foil Video

  3. SNS Video Foil Hardware Dage 70RV camera, ND filter, lens assembly on rails inside cubby recessed in nearby wall. • Neutral density filter assembly (C-AD): • DC motor drive • Geneva gear with chain • 6 positions • Radiation hardened The cubby hole will be outfitted with a liner to shield it from neutrons produced in the ring. SNS Foil Video

  4. SNS Video Foil Data Object Details: Primary foil: 400ug/cm2 Carbon will heat up to > 2000K. 1.5” long by 0.5” tall. Object will be 0.5” x 0.5” (end of foil) viewed via 1.5” ID quartz port at 40o. Secondary foil: 10mils Carbon-carbon. 3.5” wide, 2.375” ID quartz port at 40o. We will see an ellipse 3.125” wide, 2.375 tall. The 2 beams H- & H0 are 2.125” apart on center. Resolution estimate: RS-170 video, 512 x 480 pixel frame grabber, 8 bits. Using Celestron G5 Schmidt-Cassegrain lens (1250mm focal length), we can get at least 10 pixels/mm. Frame grabber data (AGS to RHIC transport) showing profile projections. Neutral density filter can be inserted to avoid saturating the Dage 70RV Newvicon tube. SNS Foil Video

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