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introduction [2013/12/24 08:07]
pereira |
introduction [2023/10/12 10:27] (current)
noji Changed from NSCL to FRIB, and a picture has been added. |
| ====== Introduction ====== | ====== Introduction ====== |
| The S800 ((D. Bazin, J.A. Caggiano, B.M. Sherrill, J. Yurkon, and A. Zeller, Nuclear Instruments and Methods in Physics Research B 204, 629 (2003) )) is a superconducting spectrograph used for reaction studies with high-energy radioactive beams produced at the [[http://www.nscl.msu.edu|NSCL Coupled-Cyclotron Facility (CCF)]] and the [[http://www.nscl.msu.edu/exp/devices#a1900|A1900 Separator]] ((D.J. Morrissey, B.M. Sherrill, M. Steiner, A. Stolz, and I. Wiedenhoever, Nuclear Instruments and Methods in Physics Research B 204, 90 (2003) )). 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 shown in the next figure depicts the two parts of the S800: the analysis line and the spectrograph. | The S800 ((D. Bazin, J.A. Caggiano, B.M. Sherrill, J. Yurkon, and A. Zeller, Nuclear Instruments and Methods in Physics Research B 204, 629 (2003) )) is a superconducting spectrograph used for reaction studies with high-energy radioactive beams produced at [[https://frib.msu.edu|Facility for Rare Isotope Beams (FRIB)]]. 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%). |
| | A picture of the S800 is shown below. The S800 consists of two parts, the analysis line and the spectrograph. |
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| {{:wiki:s800_layout.png|Layout of the S800}} | {{:wiki:s800_pano_red.png|Photograph of the S800}} |
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| === Analysis Line === | === Analysis Line === |
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| === Spectrograph === | === Spectrograph === |
| The spectrograph consist of two [[Magnets#Spectrograph Quadrupole Doublet|quadrupoles]], a [[Magnets#Spectrograph Sextupole|sextupole]] and two big [[Magnets#Spectrograph Dipoles|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 sequence of pictures below show the quadrupole doublet at the "entrance" of the spectrograph (left); the side view of the spectrograph as seen from the south bottom level of the S3 vault; and the second dipole as seen from the top level. | The spectrograph consist of two [[Magnets#Spectrograph Quadrupole Doublet|quadrupoles]], a [[Magnets#Spectrograph Sextupole|sextupole]] and two big [[Magnets#Spectrograph Dipoles|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 sequence of pictures below show the quadrupole doublet at the "entrance" of the spectrograph (left); the side view of the spectrograph as seen from the south bottom level of the [[S3 vault]]; and the second dipole as seen from the top level. |
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| {{:root:target_station_box.jpg?400|Spectrograph quadrupole doublet (yellow chamber) as seen from the bottom of the S3 vault.}} | {{:wiki:target_station_box.jpg?350|Spectrograph quadrupole doublet (yellow chamber) as seen from the bottom of the S3 vault.}} |
| | {{:wiki:S3-spectrograph.jpg?350|Spectrograph as seen from the south bottom of the S3 vault. Note that only the second dipole can be seen.}} |
| | {{:wiki:dipole-d2.jpg?350|Second dipole of the spectrograph as seen from the top of the S3 vault.}} |
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