- Accelerator Settings
|beam energy||6.8 MeV|
|I_peak:||0.05A 0.006 duty factor|
|pulse width:||10s (it seems on 200 s is possible?)|
|PEPPO Spectrometer:||151.3 A|
Set HV to Detectors
|Signal channel||HV dac||HV (V)|
CH1: Beam Sync CH2: A1 CH3: A2
Annihilation Counter Runs
- Signal Definitions for Trigger logic
- SYNC:=60 Hz sync pulse 200 micro seconds long
- Det1:= Annihilation Counter #1 (HV1)
- Det2:=Annihilation Counter #2 (HV2)
Negative Energy ?
This run 2902, Int_Ch14 histogram. Why there is negative?
1st 100 puleses
pulse that only partially read-in:
first 10 pulses, some pulses that only partially read-in:
looks like some pulses are only partially read-in. We need to delay signal more?
One possible cut may to determine if the signal is increasing within the first 100 - 300 $Iterations. This would be like creating a leading edge discriminator in software.
T->Draw("CH14:Iteration$","Iteration$<300 & CH14<100","L",10,1)
looks like it just won't draw. I need to know the to way exclude that event does not satisfy "Iteration$<300 & CH14<100" requirement.
Why CH14 histogram is all positive, but int_14 histogram has negatives?
Using the following ROOT programs
Run 2904 and 2905 coincidence overlay (NOT Deadtime corrected)
Normalizing using run time and correcting for DAQ deadtime: