S800 Documentation

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start [2013/10/16 10:52]
pereira 		start [2013/10/16 20:44]
pereira
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-====== Technical Aspects of the S800 ======+====== The NSCL S800 spectrograph ====== 
 +Welcome to the wiki page of the NSCL S800 spectrograph. The page provides technical information about the S800, as well as instructions to operate the S800 prior to and during an experiment. 
  
-===== Technical Introduction ===== 
  
-==== General ==== +===== Technical Aspects of the S800 ===== 
-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 Fig. 1. It consists of two parts: the analysis line and the spectrograph. + 
 +  * Introduction 
 +  * Stations 
 +  * Magnets 
 +  * Modes of Operation 
 +  * Determination of Angles and Momentum 
 +  * Detectors 
 +  * Electronics 
 +  * Software 
 +  * Data Acquisition 
 +  * Coupled Detectors/Devices 
 +  * Types of Experiments 
 + 
 +===== Operation of the S800 ===== 
 + 
 + 
 +===== Introduction ===== 
 +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 Fig. 1. It consists of two parts: the analysis line and the spectrograph. 
  
  
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 {{:wiki:s800_layout.png|}} {{:wiki:s800_layout.png|}}
  
-=== Analysis Line ===+==== Analysis Line ====
  
 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. 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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-=== 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 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. 
  
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 ^ Detector Position Resolution (x)| 0.3 mm           | ^ Detector Position Resolution (x)| 0.3 mm           |
 ^ Detector Position Resolution (y)| 0.3 mm           | ^ Detector Position Resolution (y)| 0.3 mm           |
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- 
  
  
start.txt · Last modified: 2024/01/02 12:45 by pereira

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