tuning_the_s800_xdt
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| Both sides previous revision Previous revision Next revision | Previous revision | ||
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tuning_the_s800_xdt [2018/03/10 14:13] pereira [FP scintillator setup] |
tuning_the_s800_xdt [2019/03/13 21:22] (current) pereira [Checking Particle ID and rate at S800 FP] |
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| * Adjust MCFD threshold: | * Adjust MCFD threshold: | ||
| - | * Using the [[s800 daq tools# | + | * Using the [[s800 daq tools# |
| * The OBJ signal feeding this module is not patched out to data U6 | * The OBJ signal feeding this module is not patched out to data U6 | ||
| * The OBJ signal from MCFD module goes to the Mesytec MTDC module and scaler (channel OBJ.MCFD.Scint) | * The OBJ signal from MCFD module goes to the Mesytec MTDC module and scaler (channel OBJ.MCFD.Scint) | ||
| Line 109: | Line 109: | ||
| {{: | {{: | ||
| - | * Gains are controlled in **s800shpini.tcl** file in directory **s800/operations/daq/usb/Configs** (an example of the content of this file can be seen {{: | + | * Gains are controlled in **s800shpini.tcl** file in directory **/user/s800/s800daq/Configurations** (an example of the content of this file can be seen {{: |
| * First shaper is for ion chamber | * First shaper is for ion chamber | ||
| * Typically, only coarse gains are used | * Typically, only coarse gains are used | ||
| Line 141: | Line 141: | ||
| * Width is narrower in match optics | * Width is narrower in match optics | ||
| * Adjust anode HV to bring fuzzy maximum to around 600-700 channels (saturation of each pad at ~ 1000 ch) | * Adjust anode HV to bring fuzzy maximum to around 600-700 channels (saturation of each pad at ~ 1000 ch) | ||
| - | * These are good spectra to check if the pad thresholds are properly set. Thresholds are too low if you see that all pads are firing at low energies. If that's the case, increase the pad thresholds in files **s800crdcv1.tcl** and **s800crdcv2.tcl**, | + | * These are good spectra to check if the pad thresholds are properly set. Thresholds are too low if you see that all pads are firing at low energies. If that's the case, increase the pad thresholds in files **s800crdcv1.tcl** and **s800crdcv2.tcl**, |
| * Spectra **crdc1.anode_crdc1.tac** and **crdc2.anode_crdc2.tac** | * Spectra **crdc1.anode_crdc1.tac** and **crdc2.anode_crdc2.tac** | ||
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| * Spectra **crdc1.pad_mult** and **crdc2.pad_mult** | * Spectra **crdc1.pad_mult** and **crdc2.pad_mult** | ||
| - | * They show the distribution of pad multiplicies | + | * They show the distribution of pad multiplicities |
| {{: | {{: | ||
| Line 235: | Line 235: | ||
| * Measure the beam intensity again and calculate the average value | * 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 **/ | * 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 **/ | + | * 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 | * Calculate the rate and purity and compare with the value in the A1900 FP to determine the transmission | ||
tuning_the_s800_xdt.1520709193.txt.gz ยท Last modified: 2018/03/10 14:13 by pereira
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