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timing [2016/08/01 13:01]
pereira [Timing]
timing [2019/05/24 14:11] (current)
pereira [Phillips TDC]
Line 38: Line 38:
 ^ E1 up ^ 14  | LeCroy Var. ampl. -> Mesytec MCFD ch #0  -> ECL-NIM -> Fan in/out -> Fan in/out -> Fan in/out -> NIM-ECL | ^ E1 up ^ 14  | LeCroy Var. ampl. -> Mesytec MCFD ch #0  -> ECL-NIM -> Fan in/out -> Fan in/out -> Fan in/out -> NIM-ECL |
 ^ E1 up ^ 15  | LeCroy Var. ampl. -> Mesytec MCFD ch #0  -> ECL-NIM -> Fan in/out -> Fan in/out -> NIM-ECL | ^ E1 up ^ 15  | LeCroy Var. ampl. -> Mesytec MCFD ch #0  -> ECL-NIM -> Fan in/out -> Fan in/out -> NIM-ECL |
 +^ II PPAC2 anode  ^ 16  | Mesytec MCFD2 ch #0 |
 +^ II PPAC2 down  ^ 17  | Mesytec MCFD2 ch #1 |
 +^ II PPAC2 up  ^ 18  | Mesytec MCFD2 ch #2 |
 +^ II PPAC2 right  ^ 19  | Mesytec MCFD2 ch #3 |
 +^ II PPAC2 left  ^ 20  | Mesytec MCFD2 ch #4 |
 +^ II PPAC1 anode  ^ 21 | Mesytec MCFD2 ch #5 |
 +^ II PPAC1 down  ^ 22 | Mesytec MCFD2 ch #6 |
 +^ II PPAC1 up  ^ 23 | Mesytec MCFD2 ch #7 |
 +^ II PPAC1 right  ^ 24 | Mesytec MCFD2 ch #8 |
 +^ II PPAC1 left  ^ 25 | Mesytec MCFD2 ch #9 |
 +
  
 The multi-hit capability requires some special attention. Let's imagine a situation where the rate from OBJ detector is much higher than from the FP detector. During this window, the MTDC will record one hit from the FP scintillator (E1 up, which SpecTcl uses as the start ToF reference) and multiple hits from the OBJ scintillator (stops). As a results, SpecTcl will generate an array of OBJ-FP ToFs  called **s800.fp.vmetdc.obj.i**,​ where i=0 stands for the first hit, i=2 second hit and so on (the corresponding array for XFP-FP TOF is **s800.fp.vmetdc.xfp.i**). The multi-hit capability requires some special attention. Let's imagine a situation where the rate from OBJ detector is much higher than from the FP detector. During this window, the MTDC will record one hit from the FP scintillator (E1 up, which SpecTcl uses as the start ToF reference) and multiple hits from the OBJ scintillator (stops). As a results, SpecTcl will generate an array of OBJ-FP ToFs  called **s800.fp.vmetdc.obj.i**,​ where i=0 stands for the first hit, i=2 second hit and so on (the corresponding array for XFP-FP TOF is **s800.fp.vmetdc.xfp.i**).
Line 72: Line 83:
  
 ==== Phillips TDC ==== ==== Phillips TDC ====
 +**ATTENTION:​ Since the end of the GRETINA-2017 campaign, this module is no longer used**
 +
   * Before going to the TDC, the OBJ and XFP detector signals are sent to a {{:​wiki:​Manual_Canberra_CFD_454.pdf|CANBERRA CFD 454 CFD}} in data U6 via patch panel #54 and #1, respectively   * Before going to the TDC, the OBJ and XFP detector signals are sent to a {{:​wiki:​Manual_Canberra_CFD_454.pdf|CANBERRA CFD 454 CFD}} in data U6 via patch panel #54 and #1, respectively
   * The TDC start is provided by the [[Trigger|ULM trigger module]]. Since the delay of the S800 trigger may be adjusted during tuning of the S800 (XDT), the stop signals (e.g. from OBJ or XFP) need to be re-adjusted so that the ToF fits into the 400-ns range of the TDC. This is done manually for OBJ and XFP, and remotely via [[XLM Delay|XLM delay module]] (operated by the [[S800 DAQ tools#Delay Window|Delay GUI]]) for other timing signals ​   * The TDC start is provided by the [[Trigger|ULM trigger module]]. Since the delay of the S800 trigger may be adjusted during tuning of the S800 (XDT), the stop signals (e.g. from OBJ or XFP) need to be re-adjusted so that the ToF fits into the 400-ns range of the TDC. This is done manually for OBJ and XFP, and remotely via [[XLM Delay|XLM delay module]] (operated by the [[S800 DAQ tools#Delay Window|Delay GUI]]) for other timing signals ​
timing.1470070860.txt.gz ยท Last modified: 2016/08/01 13:01 by pereira