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tuning_the_s800_xdt [2015/10/26 14:18]
pereira [Setting Optimization]
tuning_the_s800_xdt [2015/10/26 15:08]
pereira [Coincidences]
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-====== Dispersion Matching tuning ======+====== Dispersion Matching Mode ======
  
 In the dispersion-matching optics, the S800 focal point is achromatic, i.e. the position of the beam in the dispersive direction does not depend on the momentum. As a consequence, the beam is momentum-dispersed on the target area (pivot point) with a dispersion of about 10 cm/%. The main goal of the tuning is to ensure that the position and angle dispersion are cancelled at the focal plane, thus maximizing the resolution at that point. We also want a good image in the object position, which will also contribute to increase the resolution at the focal plane.  In the dispersion-matching optics, the S800 focal point is achromatic, i.e. the position of the beam in the dispersive direction does not depend on the momentum. As a consequence, the beam is momentum-dispersed on the target area (pivot point) with a dispersion of about 10 cm/%. The main goal of the tuning is to ensure that the position and angle dispersion are cancelled at the focal plane, thus maximizing the resolution at that point. We also want a good image in the object position, which will also contribute to increase the resolution at the focal plane. 
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           * Probably smaller typical S800 delay needed for HiRA           * Probably smaller typical S800 delay needed for HiRA
       * An example of experiments where auxiliary detectors are not used and, thus, setting up coincidence timing is not an issue are the experiments with tritons run by the charge exchange group       * An example of experiments where auxiliary detectors are not used and, thus, setting up coincidence timing is not an issue are the experiments with tritons run by the charge exchange group
-      * It is not clear whether coincidence setup gets logged as “XDT” or “EXR” +     
   * Choice of setting to be used for coincidence timing setup   * Choice of setting to be used for coincidence timing setup
       * The reaction of interest for the experiment can be used to setup coincidences only if the rate of coincidences is high enough       * The reaction of interest for the experiment can be used to setup coincidences only if the rate of coincidences is high enough
tuning_the_s800_xdt.txt · Last modified: 2023/09/22 15:15 by swartzj