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start [2013/09/30 20:44]
pereira
start [2013/09/30 21:27]
pereira
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 ==== General ==== ==== General ====
-The S800 [1] is a superconducting spectrograph used for reaction studies with high-energy radioactive beams produced at the NSCL Coupled-Cyclotron Facility (CCF) and the A1900 Separator [2]. It was designed for high-precision measurements of scattering angles (ΔΘ=2) and momentum (p/Δp=2×104), and large momentum and solid-angle acceptances (ΔΩ=20 msr, Δp/p=6%). The S800 layout is shown in Fig. 1. It consists of two parts: the analysis line and the spectrograph. +The S800 [1] is a superconducting spectrograph used for reaction studies with high-energy radioactive beams produced at the NSCL Coupled-Cyclotron Facility (CCF) and the A1900 Separator [2]. It was designed for high-precision measurements of scattering angles (ΔΘ=2 msr) and momentum (p/Δp=2×10<sup>4</sup>), and large momentum and solid-angle acceptances (ΔΩ=20 msr, Δp/p=6%). The S800 layout is shown in [[start|Fig. 1]]. It consists of two parts: the analysis line and the spectrograph. 
  
 +<del>Strike-through Text</del>
 {{:wiki:s800_layout.png|}} {{:wiki:s800_layout.png|}}
 +
  
 ==== Analysis Line ==== ==== Analysis Line ====
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 ==== Spectrograph ==== ==== Spectrograph ====
-The spectrograph consist of two quadrupoles, a sextupole and two big dipoles assembled in a QQ-S-DD configuration (segment 8) that spans vertically from the target station to the focal plane, with a total length of 18 m. The figures of merit of the spectrograph are summarized in Table 1. Achieving the nominal angle and momentum resolution require the control of different conditions such as object size (less than 0.5 mm), target thickness, uncertainty of the incident angle on the target, intensity, and whether or not the incoming beam needs to be tracked. +The spectrograph consist of two quadrupoles, a sextupole and two big dipoles assembled in a QQ-S-DD configuration (segment 8) that spans vertically from the target station to the focal plane, with a total length of 18 m. The figures of merit of the spectrograph are summarized in [[start|Table 1]]. Achieving the nominal angle and momentum resolution require the control of different conditions such as object size (less than 0.5 mm), target thickness, uncertainty of the incident angle on the target, intensity, and whether or not the incoming beam needs to be tracked. 
  
  
-| Momentum Resolution (p/Δp)          | 2 × 10          ^  
-^ Heading 3    | Row 1 Col 2          |  
-^ Heading 4    | no colspan this time |     
-^ Heading 5    | Row 2 Col 2          |  
  
 +^ Momentum Resolution (p/Δp)      | 2×10<sup>4</sup>
 +^ Momentum Acceptance             | 5.8%             
 +^ Angle Resolution                | 2 msr            |
 +^ Solid Angle Acceptance          | 7º×10º or 20 msr |
 +^ Momentum Dispersion (x/δ)       | 9.5 cm/%           
 +^ Angle Dispersion (y/b)          | 0.9 mm/mrad      |   
 +^ Magnification(x/x)              | 0.74             
 +^ Focal Plane Size (x × y)        | 55 cm ×15 cm     
 +^ Maximum Rigidity                | 4 Tm             
 +^ Detector Position Resolution (x)| 0.3 mm           |
 +^ Detector Position Resolution (y)| 0.3 mm           |
  
  
start.txt · Last modified: 2024/01/02 12:45 by pereira