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tuning_the_s800_xdt [2019/03/13 21:22]
pereira [Checking Particle ID and rate at S800 FP] 		tuning_the_s800_xdt [2023/07/24 17:51]
swartzj
Line 182: Line 182:
  
   * 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), **OBJ-FP** (center), and **XFP-FP** (right). 
-      * 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. Note that in a unreacted-beam setting, the first hit typically provides the "good" ToF (i.e. start and stop signals come from the same event)        * The second row corresponds to the MTDC with all the hits included. Note that in a unreacted-beam setting, the first hit typically provides the "good" ToF (i.e. start and stop signals come from the same event) 
-      * 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). Note that in a unreacted-beam setting, the first hit typically provides the "good" ToF (i.e. start and stop signals come from the same event). This is not the case in a reaction setting, where the rates in the XFP and OBJ detectors are much higher than in the FP SCI +      * The two spectra in the fifth row correspond 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). Note that in an unreacted-beam setting, the first hit typically provides the "good" ToF (i.e. start and stop signals come from the same event). This is not the case in a reaction setting, where the rates in the XFP and OBJ detectors are much higher than in the FP SCI 
       * 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 
       * The MTDC delays should never need to be adjusted because the matching window is sufficiently wide (around 4000 ns)       * The MTDC delays should never need to be adjusted because the matching window is sufficiently wide (around 4000 ns)
tuning_the_s800_xdt.txt · Last modified: 2023/09/22 15:15 by swartzj

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