GEM Cosmic V792 Measurements
11-07-08
The pulse coming from the strips is delayed and amplified using the Timing Filter Amplifier Model_474(X6). The amplified pulse is connected to the V792 QDC.
Run 550
Start Time: Nov 6 19:58:03; End Time: Nov 7 09:45:57
12-10-08
The signal below represents a measurement of the Trig out signal from a 10 cm x 10 cm ionization chamber with 3 GEM preamplifiers. The chamber gas a 90/10 % mixture of Arcon and CO2. The Drift HV was set to 3200 Volts and the GEM preamplifier HV distribution network was set to 2900 Volts. The V792 CAEN ADC channels have a gain of 100 fC/channel. The main signal peak appears at channel number 759 and represents an accumulation of pC of charge.
