This shows you the differences between two versions of the page.
Both sides previous revision Previous revision Next revision | Previous revision Next revision Both sides next revision | ||
during_experiments [2015/10/29 14:15] pereira [Particle identification corrections] |
during_experiments [2017/06/17 14:54] pereira [Efficiency of OBJ Scintillator] |
||
---|---|---|---|
Line 1: | Line 1: | ||
====== During experiment ====== | ====== During experiment ====== | ||
This section describes support tasks that are typically requested during the course of an experiment. Some of them, like Mask calibration, | This section describes support tasks that are typically requested during the course of an experiment. Some of them, like Mask calibration, | ||
+ | |||
+ | * [[#Mask calibration]] | ||
+ | * [[#Particle identification corrections]] | ||
+ | * [[# | ||
+ | |||
Line 81: | Line 86: | ||
* The correction process described above can be used for other ToF. SpecTcl includes a set of corrected ToF parameters and variables for the OBJ-FP and XFP-FP ToFs taken from the Phillips TDC, TACs, and MTDC: | * The correction process described above can be used for other ToF. SpecTcl includes a set of corrected ToF parameters and variables for the OBJ-FP and XFP-FP ToFs taken from the Phillips TDC, TACs, and MTDC: | ||
- | * **s800.tof.objcorr1**, | + | * **s800.tof.objcorr1**, |
- | * **s800.tof.objcorr2**, | + | * **s800.tof.objcorr2**, |
- | * **s800.tof.objcorr3**, | + | * **s800.tof.objcorr3**, |
- | * **s800.tof.xfpcorr1**, | + | * **s800.tof.xfpcorr1**, |
- | * **s800.tof.xfpcorr2**, | + | * **s800.tof.xfpcorr2**, |
- | * **s800.tof.xfpcorr3**, | + | * **s800.tof.xfpcorr3**, |
+ | |||
+ | |||
+ | |||
+ | ===== 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. | ||
+ | Before shimming, make sure that the thresholds are set properly (not too high) (refer to section " | ||
- | ===== Handling detectors ===== | ||
==== Shimming OBJ scintillator ==== | ==== Shimming OBJ scintillator ==== |