during_experiments
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during_experiments [2017/06/17 14:46] pereira [Shimming OBJ scintillator] |
during_experiments [2017/06/17 14:54] pereira [Efficiency of OBJ Scintillator] |
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| * [[#Mask calibration]] | * [[#Mask calibration]] | ||
| * [[#Particle identification corrections]] | * [[#Particle identification corrections]] | ||
| - | * [[#Handling detectors|Efficiency of OBJ scintillator]] | + | * [[# |
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| - | ===== Handling detectors | + | ===== Efficiency of OBJ Scintillator |
| + | At relatively high rates (~0.5 MHz), the OBJ scintillator will be gradually damaged. Experimenters should check the efficiency of this detector continuously during the course of the experiment. Whenever the rates drop below ~90%, they may request the Device/Beam Physicist to shim the detector. | ||
| - | ==== Efficiency of OBJ scintillator ==== | + | |
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| + | Before shimming, make sure that the thresholds are set properly (not too high) (refer to section " | ||
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| + | ==== Shimming | ||
| Shimming of the OBJ scintillator (or replacement) is required when the efficiency (measured by the experimenters) drops to about 85%. Please, refer to the operations [[https:// | Shimming of the OBJ scintillator (or replacement) is required when the efficiency (measured by the experimenters) drops to about 85%. Please, refer to the operations [[https:// | ||
during_experiments.txt · Last modified: 2023/07/20 10:43 by swartzj
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