tuning_the_s800_xdt
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tuning_the_s800_xdt [2015/10/29 13:25] pereira [Ionization Chamber setup] |
tuning_the_s800_xdt [2015/10/30 10:25] pereira [Setting up Reaction Settings] |
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| * Count rate is a little higher than on scintillator due to noise or thresholds | * Count rate is a little higher than on scintillator due to noise or thresholds | ||
| - | * Check **[[s800 SpecTcl|Spectcl]]** window **S800_CRDCS.win** in directory **/ | + | * Check **[[s800 SpecTcl|Spectcl]]** window **S800_CRDCS.win** (see figure below) to verify the good performance of the detectors. (The spectra for each CRDC can be checked separatelly in windows **s800_CRDC1.win** and **S800_CRDC2.win**) |
| * Spectra **crdc1.raws** and **crdc2.raws** (top and middle spectra in the leftmost (first) column) | * Spectra **crdc1.raws** and **crdc2.raws** (top and middle spectra in the leftmost (first) column) | ||
| Line 189: | Line 189: | ||
| * Adjust the TDC delays of E1 up, down using the Delay GUI | * Adjust the TDC delays of E1 up, down using the Delay GUI | ||
| * In principle, the TACs delays don't need to be adjusted | * In principle, the TACs delays don't need to be adjusted | ||
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| + | |||
| + | * Check the efficiencies of the Phillips TDC, TACs, and MTDC for the OBJ-FP and XFP-FP ToFs: | ||
| + | * Make a gate on spectrum **IC.SUM** selecting the region of interest, and call it " | ||
| + | * Looking at the ToF spectra gated on " | ||
| + | * The window file **S800_TOF_EFFICIENCY.win** includes all the spectra needed | ||
| + | |||
| ==== Checking Particle ID and rate at S800 FP ==== | ==== Checking Particle ID and rate at S800 FP ==== | ||
| - | * Select SpecTcl window **S800_PID.win** in directory **/ | + | * Select SpecTcl window **S800_PID.win** |
| * The three columns correspond to the PID determined with the **RF-FP** ToF (left), **OBJ-FP** (center), and **XFP-FP** (right) | * The three columns correspond to the PID determined with the **RF-FP** ToF (left), **OBJ-FP** (center), and **XFP-FP** (right) | ||
| * The first (top) row corresponds to PID spectra using the Phillips TDC | * The first (top) row corresponds to PID spectra using the Phillips TDC | ||
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| * What experimenters want (e.g., if they want singles, the cut has to be more restrictive to limit acquisition deadtime) | * What experimenters want (e.g., if they want singles, the cut has to be more restrictive to limit acquisition deadtime) | ||
| * Move blocker, decrease attenuator, repeat | * Move blocker, decrease attenuator, repeat | ||
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| + | * If necessary, do the ToF corrections to improve the PID resolution (instructions [[During experiments# | ||
tuning_the_s800_xdt.txt ยท Last modified: 2023/09/22 15:15 by swartzj
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