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- | + | ===== [[Introduction]] ===== | |
- | - Technical Aspects of the S800 | + | |
- | - Introduction | + | |
- | - Magnets | + | |
- | - Stations | + | |
- | - Modes of Operation | + | |
- | - How are angle and momentum measured? | + | |
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- | ====== Technical Aspects of the S800 ====== | + | |
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- | ===== Technical Introduction ===== | + | |
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- | ==== 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 msr) and momentum (p/ | + | |
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- | === Analysis Line === | + | |
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- | The analysis line extends from the object position to the target station, with a total length of 22 m. It includes four 22.5° dipoles, five quadrupole triplets, and two vertically steering magnets, assembled in two segments with configurations QQQ-H-DD-QQQ (segment 6) and QQQ-DD-H-QQQ-QQQ (segment 7) symmetrically oriented around an intermediate image plane. The maximum rigidity is 5 Tm, although it depends on the tune of the quadrupoles. The acceptances of the analysis line depends on the optical mode. | + | |
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- | [[s800]] | + | |
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- | === Spectrograph | + | |
- | The spectrograph consist of two quadrupoles, | + | |
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- | ^ Momentum Resolution (p/ | + | |
- | ^ Momentum Acceptance | + | |
- | ^ Angle Resolution | + | |
- | ^ Solid Angle Acceptance | + | |
- | ^ Momentum Dispersion (x/ | + | |
- | ^ Angle Dispersion (y/b) | 0.9 mm/ | + | |
- | ^ Magnification(x/ | + | |
- | ^ Focal Plane Size (x × y) | 55 cm ×15 cm | | + | |
- | ^ Maximum Rigidity | + | |
- | ^ Detector Position Resolution (x)| 0.3 mm | | + | |
- | ^ Detector Position Resolution (y)| 0.3 mm | | + | |
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==== S800 Stations ==== | ==== S800 Stations ==== |