1. MPPC tests - Warsaw Michał Dziewiecki Robert Kurjata Robert Sulej Marcin Ziembicki

2. The Machine

3. Software Running on single computer Full control of the device Data acquisition via Ethernet On-line data processing (10.5 MB/s) Automatic parameters calculation (gain, V br, …)

4. Histograms fitting

5. Measurements status Processed till now: ≈600 pcs ≈100 devices measured at multiple voltages Finish: within next two weeks (huge throughput) Some devices need to be tested once again (≈5%)

6. Results – relative gain at Vop Calculations based on fft-filtered histogram Calculations based on gaussian fit

7. Results – dark rate 0.5 (red) and 1.5 p.e (blue) dark rates for 570 sensors operating at nominal V op Dark rates histogram

8. Results – dark rate Warsaw vs Hamamatsu dark rate measurements Two method of dark rate measurement: using discriminator or sampling ADC

9. Results – PDE (some problems) Flasher settings were changed during measurements Integration time was changed PDE (with dark-rate-correction) for whole series Dark rate measured with discriminator Blue: dark rate estimated using ADC (only 3 batches) Relative PDE histogram

10. Gain & dark-rate vs voltage Gain vs Vop 1.5 p.e. 0.5 p.e. Automatically calculated V BR

11. CT & AP Necessary data is acquired CT and AP rates are not calculated at the moment

12. Thank you.