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tuning_the_s800_xdt [2015/10/26 13:25] pereira [Timing setup] |
tuning_the_s800_xdt [2015/10/26 13:57] pereira [Checking Particle ID and rate at S800 FP] |
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==== Checking Particle ID and rate at S800 FP ==== | ==== Checking Particle ID and rate at S800 FP ==== | ||
- | * Establish PID | ||
- | * Refer to information on setting from A1900 FP | ||
- | * dE-TOF | ||
- | * dE signal from Ion Chamber | ||
- | * TOF from XF or Object scintillator to S800 FP | ||
- | * Not necessary to implement dE- or TOF-based corrections | ||
- | * Document rate of fragment of interest with run to disk | ||
- | * Measure beam current with appropriate Faraday cups | ||
- | * Timed run | ||
+ | * Select SpecTcl window **S800_PID.win** in directory **/ | ||
+ | * 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 the Phillips TDC | ||
+ | * The second row corresponds to the MTDC with just the first hit included | ||
+ | * The third row corresponds to the ORTEC TACs. Note that there is not **RF-FP TAC** | ||
+ | * You might need to adjust the limits of the spectra to get a good resolution | ||
+ | {{: | ||
+ | |||
+ | * Establish PID and measure rate | ||
+ | * Determine the blob that corresponds to the unreacted beam (refer to information on setting from A1900 FP) | ||
+ | * Take gates around the fragment of interest | ||
+ | * Measure the beam intensity the appropriate faraday cup | ||
+ | * Take a run on disk | ||
+ | * Measure the beam intensity again and calculate the average value | ||
+ | * In **[[s800 SpecTcl|SpecTcl GUI]], click **Attach to File** and select data file **run-xxxx-xx.evt** in directory **/ | ||
+ | * Check the run time and live time from the corresponding scaler file in directory **/ | ||
+ | * Calculate the rate and purity and compare with the value in the A1900 FP to determine the transmission | ||
==== Analysis line classic PPAC setup (Focus optics only) ==== | ==== Analysis line classic PPAC setup (Focus optics only) ==== | ||
* " | * " |