Qweak scintillator prototype cosmic test (7)

A. Fixed the F1TDC board, and took several cosmic data at different Z positions (Z=10, 110, 195 cm) along the big SCIN. Below are the ADC and TDC histograms of those cosmic runs.

1. ADC histograms of run 1312 (Z=10 cm, Y=center). The input signal of L PMT was attenuated using signal splitter (Otherwise, the ADC spectrum of L PMT will outside the range of ADC board).





2. ADC histograms of run 1310 (Z=110 cm, Y=center).





3. ADC histograms of run 1311 (Z=195 cm, Y=center).





4. TDC histograms of run 1312 (Z=10 cm, Y=center).





5. TDC histograms of run 1310 (Z=110 cm, Y=center).





6. TDC histograms of run 1311 (Z=195 cm, Y=center).





B. Position dependence of ADC response, and comparison to the guideit simulation. For L+R, guideit agrees to the cosmic test within 25%. The agreement is better at both ends than the middle. The agreement is better for the R PMT than the L PMT.









C. Position dependence of TDC response, and comparison to the guideit simulation. The simulation agrees to the cosmic test within 25%.