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tuning_the_s800_xdt [2017/07/21 17:35]
pereira [CRDCs setup]
tuning_the_s800_xdt [2019/03/13 21:17]
pereira
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   * Adjust MCFD threshold:   * Adjust MCFD threshold:
-      * Using the [[s800 daq tools#​Mesytec CFD gui|Mesytec CFD GUI]], open the configuration file **MCFD16.tcl** ​ in directory **/user/operations/daq/usb/Configs**+      * Using the [[s800 daq tools#​Mesytec CFD gui|Mesytec CFD GUI]], open the configuration file **MCFD16.tcl** ​ in directory **/user/s800/s800daq/Configs**
       * The OBJ signal feeding this module is not patched out to data U6       * The OBJ signal feeding this module is not patched out to data U6
       * The OBJ signal from MCFD module goes to the Mesytec MTDC module and scaler (channel OBJ.MCFD.Scint) ​       * The OBJ signal from MCFD module goes to the Mesytec MTDC module and scaler (channel OBJ.MCFD.Scint) ​
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           * End and Begin **[[s800 daq tools#Run Control Window|ReadoutGUI]]** to assert new trigger condition           * End and Begin **[[s800 daq tools#Run Control Window|ReadoutGUI]]** to assert new trigger condition
  
-  * Select **[[s800 SpecTcl|Spectcl]]** window **S800_SCINT.win** in directory **/​user/​s800/​operations/​spectcl/​s800v7/Windows**. (NOTE: Spectra definition files can be found in directory **/​user/​s800/​operations/​spectcl/​s800v7/​Definitions**. A good file with useful spectra is **s800xdt.tcl**)+  * Select **[[s800 SpecTcl|Spectcl]]** window **S800_SCINT.win** in directory **/​user/​s800/​s800spectcl/Windows**. (NOTE: Spectra definition files can be found in directory **/​user/​s800/​s800spectcl/​Definitions**. A good file with useful spectra is **s800xdt.tcl**)
  
  
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 {{:​wiki:​IC-raws.png?​500|IC.raw spectrum.}} {{:​wiki:​IC-raws.png?​500|IC.raw spectrum.}}
  
-        * Gains are controlled in **s800shpini.tcl** file in directory **s800/operations/daq/usb/Configs** (an example of the content of this file can be seen {{:​wiki:​s800shpini.pdf|here}}).+        * Gains are controlled in **s800shpini.tcl** file in directory **/user/s800/s800daq/Configs** (an example of the content of this file can be seen {{:​wiki:​s800shpini.pdf|here}}).
             * First shaper is for ion chamber             * First shaper is for ion chamber
             * Typically, only coarse gains are used             * Typically, only coarse gains are used
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       * Spectra **crdc1.raws** and **crdc2.raws** ​       * Spectra **crdc1.raws** and **crdc2.raws** ​
-          * Each spectra shows the multiple sampled ​signals from each pad  +          * Each spectra shows the pad signals ​averaged over the number of samples ​from the SCA (typically four
-          * These are good spectra to check if the pad thresholds are properly set. Thresholds are too low if you see that all pads are firing at low energies. If that's the case, increase the pad thresholds in files **s800crdcv1.tcl** and **s800crdcv2.tcl**,​ under directory **s800/​operations/​daq/​usb/​Configs** ​(contact device physicist for assistance, if needed).+
           * The 224 pads are assembled along the dispersive direction           * The 224 pads are assembled along the dispersive direction
           * Width of beam peak is proportional to A1900 p-acceptance in focus optics           * Width of beam peak is proportional to A1900 p-acceptance in focus optics
           * Width is narrower in match optics ​           * Width is narrower in match optics ​
           * Adjust anode HV to bring fuzzy maximum to around 600-700 channels (saturation of each pad at ~ 1000 ch)           * Adjust anode HV to bring fuzzy maximum to around 600-700 channels (saturation of each pad at ~ 1000 ch)
 +          * These are good spectra to check if the pad thresholds are properly set. Thresholds are too low if you see that all pads are firing at low energies. If that's the case, increase the pad thresholds in files **s800crdcv1.tcl** and **s800crdcv2.tcl**,​ under directory **/​user/​s800/​s800daq/​Configs** (contact device physicist for assistance, if needed).
  
       * Spectra **crdc1.anode_crdc1.tac** and **crdc2.anode_crdc2.tac** ​       * Spectra **crdc1.anode_crdc1.tac** and **crdc2.anode_crdc2.tac** ​
tuning_the_s800_xdt.txt · Last modified: 2019/03/13 21:22 by pereira