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tuning_the_s800_xdt [2017/06/17 15:12]
pereira [Coincidences]
tuning_the_s800_xdt [2017/06/27 11:05]
pereira [Dispersion Matching Mode]
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   * Open the NCS application **QtKM** in the Applications Menu. Open file **BLSetup_A1900.gkm**. The magnetic elements that are typically tweaked with the knob box sitting on the left side of u6pc5 are **I232TA**, **I236TC**, and **I245TC** which can be found on page **S800 BLine+Spectrograph**. Other elements used to improve the focusing in the object point, and the transmission are **I172QA** and **I174QB**. The goal of the dispersion-matching tuning is to find a compromise between transmission and resolution.   * Open the NCS application **QtKM** in the Applications Menu. Open file **BLSetup_A1900.gkm**. The magnetic elements that are typically tweaked with the knob box sitting on the left side of u6pc5 are **I232TA**, **I236TC**, and **I245TC** which can be found on page **S800 BLine+Spectrograph**. Other elements used to improve the focusing in the object point, and the transmission are **I172QA** and **I174QB**. The goal of the dispersion-matching tuning is to find a compromise between transmission and resolution.
        {{:wiki:QtKM.png?650|XG.}}        {{:wiki:QtKM.png?650|XG.}}
-         * The two figures below show the spectrum **CRDC1.XG!FOI-AFP-BFP** before (top) and after (bottom) the dispersion-matching tuning for a typical experiment. Be aware that the width given by SpecTcl for the selected peak is not too reliable. It is more convenient to do a real gaussian fit. Unfortunatelly this is not an option included in the current version of SpecTcl. That's why some device physicists prefer SpecTk for this type of tuning+         * The two figures below show the spectrum **CRDC1.XG!FOI-AFP-BFP** before (top) and after (bottom) the dispersion-matching tuning for a typical experiment. Be aware that the width given by SpecTcl for the selected peak is not too reliable. It is more convenient to do a real gaussian fit. 
 {{:wiki:DispMatch-XG-run2.png?650|XG before tuning.}} {{:wiki:DispMatch-XG-run5.png?650|XG after tuning.}}  {{:wiki:DispMatch-XG-run2.png?650|XG before tuning.}} {{:wiki:DispMatch-XG-run5.png?650|XG after tuning.}} 
  
tuning_the_s800_xdt.txt ยท Last modified: 2023/09/22 15:15 by swartzj