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tuning_the_s800_xdt [2017/06/17 14:44] pereira [Object scintillator setup] |
tuning_the_s800_xdt [2017/06/17 15:10] pereira [Coincidences] |
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* The auxiliary detector provides a secondary trigger that is fed into the S800 trigger system | * The auxiliary detector provides a secondary trigger that is fed into the S800 trigger system | ||
* A key part of setting up the S800 for such experiments is getting proper timing setup between the S800 and any auxiliary detectors | * A key part of setting up the S800 for such experiments is getting proper timing setup between the S800 and any auxiliary detectors | ||
- | * For cases where the Secondary detector has a slow response relative to the S800, the coincidence timing must be reset to the S800 timing by delaying the S800 trigger using the third gate and delay generator on the trigger GUI | + | * For cases where the Secondary detector has a slow response relative to the S800, the coincidence timing must be reset to the S800 timing by delaying the S800 trigger using the third gate and delay generator on the |
* A typical S800 delay for SeGA is 450 ns | * A typical S800 delay for SeGA is 450 ns | ||
* Probably smaller typical S800 delay needed for HiRA | * Probably smaller typical S800 delay needed for HiRA | ||
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* Setup | * Setup | ||
- | * Coincidence signals are usually visible on scope without running scope in acquire mode | + | * Using the [[S800 DAQ tools# |
+ | * Assign each wire to an inspect channel from the patch panel so that you can check their timings | ||
* Adjust the width of the early signal (S800 or secondary) should be wide enough to catch coincidences with the late signal (width of late signal is not critical) | * Adjust the width of the early signal (S800 or secondary) should be wide enough to catch coincidences with the late signal (width of late signal is not critical) | ||
* Readjust TDC delays based on changes made to S800 trigger delay | * Readjust TDC delays based on changes made to S800 trigger delay | ||
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* To be resolved: | * To be resolved: | ||
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* Sample timing for running S800 with SeGA | * Sample timing for running S800 with SeGA | ||
* SeGA trigger is late with respect to S800 trigger | * SeGA trigger is late with respect to S800 trigger |