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tuning_the_s800_xdt [2015/10/26 12:41] pereira [Timing setup] |
tuning_the_s800_xdt [2015/10/26 13:21] pereira [Timing setup] |
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* Select SpecTcl window **S800_TOF.win** | * Select SpecTcl window **S800_TOF.win** | ||
- | * The three columns correspond to the RF-FP ToF (left), OBJ-FP (center), and XFP-FP (right) | + | * The three columns correspond to the **RF-FP** ToF (left), |
* The first (top) row corresponds to the Phillips TDC | * The first (top) row corresponds to the Phillips TDC | ||
* The second row corresponds to the MTDC with all the hits included | * The second row corresponds to the MTDC with all the hits included | ||
* The third row corresponds to the MTDC with only the first hit | * The third row corresponds to the MTDC with only the first hit | ||
- | * The fourth row corresponds to the ORTEC TACs. Note that there is not RF-FP TAC | + | * The fourth row corresponds to the ORTEC TACs. Note that there is not **RF-FP TAC** |
* The two spectra in the fifth row corresponds to the MTDC summary spectra of OBJ-FP and XFP-FP ToFs (zoomed in). The spectra show the ToF (vertical axis) vs. hit number (horizontal axis). In an unreacted setting, one expects to see the most of the " | * The two spectra in the fifth row corresponds to the MTDC summary spectra of OBJ-FP and XFP-FP ToFs (zoomed in). The spectra show the ToF (vertical axis) vs. hit number (horizontal axis). In an unreacted setting, one expects to see the most of the " | ||
* An empty ToF spectrum means that either the delays are not right (and need to be adjusted) or the spectrum range is too narrow | * An empty ToF spectrum means that either the delays are not right (and need to be adjusted) or the spectrum range is too narrow | ||
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{{: | {{: | ||
- | * Adjust | + | * If necessary, adjust |
- | * | + | * Using ULM GUI assign |
- | * | + | * Select the timing signals (Delay |
- | * Phillips TDC: | + | * Adjust |
- | + | * Adjust | |
- | + | * In principle, | |
- | | + | |
- | + | ||
- | * The TDC delays can only be changed when the run control is stopped; must SAVE settings before starting run control not to overwrite adjustments being made | + | |
- | + | ||
- | * The “S800” | + | |
- | + | ||
- | * Trigger | + | |
- | * There are 4 trigger | + | |
- | + | ||
- | | + | |
- | * There are 4 TDC inspect channels patched to data-U6 that can be assigned using the trigger GUI | + | |
- | * The full range of the TDC is 400 ns | + | |
- | * Set each timing to 200 ns | + | |
- | * TDCs of last 4 listed signals (including XF and object scintillators) are bypassed with cable delays inside the vault and thus their delays cannot be controlled with the GUI | + | |
- | * They can be inspected, however | + | |
- | + | ||
- | * Information | + | |
- | * The signal delays controlled by the GUI (and not by cable delays) are not “pipelined” -– i.e., any new signals that arrive during the delay time of a previous signal are lost and thus deadtime is introduced into the system. | + | |
- | * All of the trigger signals are not pipelined and are thus subject to deadtime | + | |
==== Checking Particle ID and rate at S800 FP ==== | ==== Checking Particle ID and rate at S800 FP ==== |