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--- tuning_the_s800_xdt [2015/10/26 13:25]
pereira [Timing setup]
+++ tuning_the_s800_xdt [2015/10/26 13:58]
pereira [Checking Particle ID and rate at S800 FP]
@@ Line 182: / Line 182: @@
 ==== Checking Particle ID and rate at S800 FP ====
-  * Establish PID
-      * Refer to information on setting from A1900 FP
+  * Select SpecTcl window **S800_PID.win** in directory **/user/s800/operations/spectcl/Windows**
-      * dE-TOF
+      * The three columns correspond to the PID determined with the **RF-FP** ToF (left), **OBJ-FP** (center), and **XFP-FP** (right)
-           * dE signal from Ion Chamber
+      * The first (top) row corresponds to the Phillips TDC
-           * TOF from XF or Object scintillator to S800 FP
+      * The second row corresponds to the MTDC with just the first hit included
-           * Not necessary to implement dE- or TOF-based corrections
+      * The third row corresponds to the ORTEC TACs. Note that there is not **RF-FP TAC**
-      * Document rate of fragment of interest with run to disk
+      * You might need to adjust the limits of the spectra to get a good resolution
-          * Measure beam current with appropriate Faraday cups
-          * Timed run
+{{:wiki:SpecTcl-e14019-PID-r103.jpg?850|S800_PID.win page}}
+  * 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 **/user/s800/stagearea/experiment/runxxxx**, where xxxx stands for the run number
+      * Check the run time and live time from the corresponding scaler file in directory **/user/s800/converged_daq/scalers**
+      * Calculate the rate and purity and compare with the value in the A1900 FP to determine the transmission

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