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Possible Locations

Possible (unmodeled) restrictions. Possible Locations. Possible Checks. 0th order: open up and look 1st order: Point-parallel-point optics to image shadows More wobbler studies to measure (a,b) acceptance Scattering from thick foil to measure (a,b,d) acceptance. Possible Locations.

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Possible Locations

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  1. Possible (unmodeled) restrictions Possible Locations

  2. Possible Checks • 0th order: open up and look • 1st order: • Point-parallel-point optics to image shadows • More wobbler studies to measure (a,b) acceptance • Scattering from thick foil to measure (a,b,d) acceptance

  3. Possible Locations • Just before Q9 (maximum y envelope) • Any of the BCMs after mass slits • Interceptor position • Other ideas?

  4. Detector schemes • Solar cell arrays • Pros: sensitive, cheap • Cons: energy, position resolution poor, • DSSSD • Pros: E,x,y position resolution OK • Cons: expensive, sensitive • Scintillating fibers • Pros: sensitive, good position resolution • Cons: complex

  5. (x,y)=0 • (a,b)=±20mrad • dE=±4% • SLITC=25mm • SLITC=15,25mm • SLITF=45mm Substantial loss at charge slits, but none beyond that

  6. (x,y)=0 • (a,b)=±20mrad • dE=±4% • SLITC=45mm • SLITC=45mm • SLITF=45mm No more loss at charge slits… …but additional loss points crop up

  7. (x,y)=0 • (a,b)=±20mrad • dE=±4% • SLITC=45mm • SLITC=45mm • SLITF=45mm ED1 field clamp limits rays

  8. (x,y)=0 • (a,b)=±20mrad • dE=±4% • SLITC=45mm • SLITC=45mm • SLITF=45mm Even if they make it past ED1, ED2 field clamp limits rays

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