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tuning_the_s800_xdt

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tuning_the_s800_xdt [2015/10/21 14:07]
pereira 		tuning_the_s800_xdt [2015/10/21 16:14]
pereira
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   * Adjust MCFD threshold:   * Adjust MCFD threshold:
 +      * Open configuration file **MCFD16.tcl** in **/user/s800/operations/daq/usb/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-16 module goes to the Mesytec MTDC32 module and scaler (channel OBJ.MCFD.Scint)        * The OBJ signal from MCFD-16 module goes to the Mesytec MTDC32 module and scaler (channel OBJ.MCFD.Scint) 
-      * Adjust CFD threshold looking at scalers. The ratio of OBJ to XFP scaler rates (channels OBJ.MCFD.Scint and XFP.MCFD.Scint) should reflect the transmission of the cocktail beam  +      * Make sure that the threshold of the XFP MCFD channel is reasonable. Rates in scaler channels XFP.Scint and XFP.MCFD.Scint should be comparable 
 +      * Adjust MCFD OBJ threshold looking at scalers. The ratio of OBJ to XFP scaler rates (channels OBJ.MCFD.Scint and XFP.MCFD.Scint) should reflect the transmission of the cocktail beam         
 +      * Save new threshold in configuration file **MCFD16.tcl** 
        
  
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       * Spectra **crdc1.xg** and **crdc2.xg** (bottom spectra in first and second columns)       * Spectra **crdc1.xg** and **crdc2.xg** (bottom spectra in first and second columns)
-          * It shows the position of the beam in the dispersive direction, evaluated by calculating the "center of gravity" +          * It shows the position of the beam in the dispersive direction, evaluated by calculating the "center of gravity". The peak should be in the middle of the spectra in order to center the beam
  
-      * Spectra **crdc1.tac** and **crdc2.tac** (bottom spectra in third and fourth columns) 
-          * They correspond to the non-dispersive position of the beam in the CRDCs. The peak should be in the middle of the spectra in order to center the beam 
  
 +      * Spectra **crdc1.tac** and **crdc2.tac** (bottom spectra in third and fourth columns)
 +          * They correspond to the non-dispersive position of the beam in the CRDCs. 
  
 {{:wiki:CRDCS-example.png?850|CRDCs summary spectra}} {{:wiki:CRDCS-example.png?850|CRDCs summary spectra}}
tuning_the_s800_xdt.txt · Last modified: 2023/09/22 15:15 by swartzj

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