timing
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| Both sides previous revision Previous revision Next revision | Previous revision | ||
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timing [2016/08/01 13:01] pereira [Timing] |
timing [2020/04/02 20:58] pereira [MTDC] |
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| * The XFP detector signal is sent to a {{: | * The XFP detector signal is sent to a {{: | ||
| * The MTDC timing signals do not require external delay adjustments because the matching window is sufficiently wide | * The MTDC timing signals do not require external delay adjustments because the matching window is sufficiently wide | ||
| - | * The width and delay of the matching window can be changed in file **vmusbdaqconfig.tcl** in directory **/ | + | * The width and delay of the matching window can be changed in file **vmusbdaqconfig.tcl** in directory **/ |
| - | * SpecTcl calculates the OBJ-FP and XFP-FP ToFs by substracting the E1 up time (MTDC channel | + | * The S800 SpecTcl |
| * 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 | * 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) | ||
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| ^ 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**, | 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**, | ||
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| ==== Phillips TDC ==== | ==== Phillips TDC ==== | ||
| + | **ATTENTION: | ||
| + | |||
| * Before going to the TDC, the OBJ and XFP detector signals are sent to a {{: | * Before going to the TDC, the OBJ and XFP detector signals are sent to a {{: | ||
| * 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.txt · Last modified: 2020/04/02 20:58 by pereira
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