Possible Locations
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Transcript of Possible Locations
Possible Locations
Possible (unmodeled) restrictions
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
• Just before Q9 (maximum y envelope)
• Any of the BCMs after mass slits
• Interceptor position
• Other ideas?
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
• (x,y)=0• (a,b)=±20mrad• dE=±4%• SLITC=25mm• SLITC=15,25mm• SLITF=45mm
Substantial loss at charge slits, but none beyond that
• (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
• (x,y)=0• (a,b)=±20mrad• dE=±4%• SLITC=45mm• SLITC=45mm• SLITF=45mm
ED1 field clamp limits rays
• (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