This shows you the differences between two versions of the page.
Both sides previous revision Previous revision Next revision | Previous revision Next revision Both sides next revision | ||
start [2013/10/16 10:01] pereira |
start [2013/10/16 20:39] pereira |
||
---|---|---|---|
Line 1: | Line 1: | ||
- | ====== | + | ====== The NSCL S800 spectrograph ====== |
- | + | Welcome | |
- | ===== Technical Introduction ===== | + | |
- | + | ||
- | ==== 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/ | + | |
- | + | ||
- | + | ||
- | {{: | + | |
- | + | ||
- | === Analysis Line === | + | |
- | + | ||
- | The analysis line extends from the object position | + | |
- | + | ||
- | + | ||
- | === 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 | + | |
- | + | ||
- | + | ||
- | + | ||
- | ^ 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 | | + | |
- | + | ||
+ | ===== [[Introduction]] ===== | ||
==== S800 Stations ==== | ==== S800 Stations ==== | ||
Line 67: | Line 37: | ||
=== Spectrograph Sextupole === | === Spectrograph Sextupole === | ||
The only high-order magnet included in the S800 is a sextupole coil installed around the bore tube of Q2. The purpose of this element is to correct the broadening of the beam at the focal plane due to the dominant (x|2) aberration. This defines a narrower trajectory of the beam, allowing the use of a beam blocker at the focal plane to block the unreacted beam when its magnetic rigidity is close to the tuned setting. | The only high-order magnet included in the S800 is a sextupole coil installed around the bore tube of Q2. The purpose of this element is to correct the broadening of the beam at the focal plane due to the dominant (x|2) aberration. This defines a narrower trajectory of the beam, allowing the use of a beam blocker at the focal plane to block the unreacted beam when its magnetic rigidity is close to the tuned setting. | ||
+ | |||
+ | |||
+ | |||
+ | |||
+ | |||
+ | |||
+ | |||