trigger
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trigger [2014/03/11 11:18] pereira [Scalers and dead time] |
trigger [2014/03/11 11:20] pereira [Scalers and dead time] |
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| In addition, scalers are connected to the raw and live trigger signals. For the determination of the dead time, both a free running and vetoed 10 kHz pulser signal are also connected to scalers. This is the preferred method because the pulser is not subject to possible double triggering effects like the raw trigger. | In addition, scalers are connected to the raw and live trigger signals. For the determination of the dead time, both a free running and vetoed 10 kHz pulser signal are also connected to scalers. This is the preferred method because the pulser is not subject to possible double triggering effects like the raw trigger. | ||
| - | The remining 16 scaler input channels (pins 17 to 32 in module) are connected to a 16-channel CFD CAEN C808, which sends the signals from the S800 detectors (E1 up, E1 down, CRDC1, CRDC2, OBJ_SCI, A1900 SCI, and OR Hodoscopes). | + | The remining 16 scaler input channels (pins 17 to 32 in module) are connected to a **16-channel CFD CAEN C808**, which sends the signals from the S800 detectors (**E1 up,** **E1 down**, **CRDC1**, **CRDC2**, **OBJ_SCI**, **A1900 SCI**, and **OR Hodoscope**). |
| The list below is a direct copy of the scaler description file for the s800. This file maps channel names to channel numbers, and in addition determines the layout. | The list below is a direct copy of the scaler description file for the s800. This file maps channel names to channel numbers, and in addition determines the layout. | ||
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| - | * Modify the scaler display script to include the new signals: Go to / | + | * Modify the scaler display script to include the new signals: Go to **/ |
| * Connect the new logic signals into the free input channels of the 1**6-ch CFD CAEN C808.** Follow the output ribbon cable to know the corresponding scaler channel where the new signals from the CFD are sent. | * Connect the new logic signals into the free input channels of the 1**6-ch CFD CAEN C808.** Follow the output ribbon cable to know the corresponding scaler channel where the new signals from the CFD are sent. | ||
| - | * Enable the new CFD CAEN C808 channels (if they are not yet enabled): Go to / | + | * Enable the new CFD CAEN C808 channels (if they are not yet enabled): Go to **/ |
| - | * Start the scalers display script. You should see the new channels in the display counting. If they are zero, the CFD thresholds may be too high. If that is the case, you should lower them in file **s800cfdini.tcl** (directory / | + | * Start the scalers display script. You should see the new channels in the display counting. If they are zero, the CFD thresholds may be too high. If that is the case, you should lower them in file **s800cfdini.tcl** (directory |
trigger.txt ยท Last modified: 2023/10/24 16:47 by swartzj
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