Make New Entry, Make Followup Entry
User name A. Camsonne
Log entry time 16:12:41 on January17,2009
Entry number 256540
keyword=Compton ratesI did a few tests with the compton :
-LED at 1600 V , no rate
-LED with LED trigger at 100 Hz I get the triggers so DAQ is fine
The fact I saw rate when beams come off made me think that the background might be so high that the gain drops or the signal is a DC level and discrimator does not fire anymore. I managed to get back some rates lowering the HV. I will try to figure the gain with the LED, though maybe we could ask to MCC to tune on the different setting at least to make a relative improvement.
FIGURE 1
