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timing [2016/07/24 17:57]
pereira 		timing [2016/08/01 13:01]
pereira [Timing]
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 Although it is possible to measure the ToF between any pair of timing sources, there are three "standard" measurements provided to any experiment, namely, between the cyclotron and the S800 FP (RF-FP); between the A1900 FP and the S800 FP (XFP-FP); and between the S800 OBJ and FP (OBJ-FP). These ToFs are electronically recorded in a {{:wiki:Manual_Phillips_TDC_7186.pdf|Phillips 7186 TDC}}, a {{:wiki:MTDC-32.pdf|Mesytec TDC}} (MTDC), and a group of {{:wiki:Manual_Ortec_TAC_566.pdf|Ortec 566 TACs}}, all them located in the [[Electronics#Crate Configuration|electronic racks in S3]], near the FP box.  Although it is possible to measure the ToF between any pair of timing sources, there are three "standard" measurements provided to any experiment, namely, between the cyclotron and the S800 FP (RF-FP); between the A1900 FP and the S800 FP (XFP-FP); and between the S800 OBJ and FP (OBJ-FP). These ToFs are electronically recorded in a {{:wiki:Manual_Phillips_TDC_7186.pdf|Phillips 7186 TDC}}, a {{:wiki:MTDC-32.pdf|Mesytec TDC}} (MTDC), and a group of {{:wiki:Manual_Ortec_TAC_566.pdf|Ortec 566 TACs}}, all them located in the [[Electronics#Crate Configuration|electronic racks in S3]], near the FP box. 
  
-Although the timing reference ("start") in the all the ToF modules is given by the FP scintillator E1 up, the electronic path from the detector to each module is different (see {{:wiki:s800electronicstschematics-to20160720.pdf|main electronics diagram}} for more details). +Although the timing reference ("start") in the all the ToF modules is given by the FP scintillator E1 up, the electronic path from the detector to each module is different (see {{:wiki:s800electronicstschematics.pdf|main electronics diagram}} for more details). 
    
 Some important things to know about each of these modules: Some important things to know about each of these modules:
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   * The width and delay of the matching window can be changed in file **vmusbdaqconfig.tcl** in directory **/user/s800/converged_daq/Scripts**   * The width and delay of the matching window can be changed in file **vmusbdaqconfig.tcl** in directory **/user/s800/converged_daq/Scripts**
   * SpecTcl calculates the OBJ-FP and XFP-FP ToFs by substracting the E1 up time (MTDC channel 15) to the OBJ time (MTDC channel 3) and the XFP time (MTDC channel 2)    * SpecTcl calculates the OBJ-FP and XFP-FP ToFs by substracting the E1 up time (MTDC channel 15) to the OBJ time (MTDC channel 3) and the XFP time (MTDC channel 2) 
-  * Note that the same flat ribbon cable connected to the MTDC is also feeding the scaler module. Thus, the 16 channels in the MTDC are exactly the same as channels 17-31 of the scaler module+  * Note that the same flat ribbon cable connected to the MTDC is also feeding the scaler module. Thus, the 16 channels in the MTDC are exactly the same as channels 16-31 of the scaler module
   * Copies of the timing signals from XF and OBJ used for the TAC ToF were included in channels 8 and 9 of the MTDC (also the scaler)    * Copies of the timing signals from XF and OBJ used for the TAC ToF were included in channels 8 and 9 of the MTDC (also the scaler) 
   * The table below lists the MTDC channels:      * The table below lists the MTDC channels:   
timing.txt ยท Last modified: 2020/04/02 20:58 by pereira

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