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phase2:led [2015/07/17 13:14] asc |
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====== TileCal LED tests ====== | ====== TileCal LED tests ====== | ||
- | Here is a library with PMT signals with active dividers. | + | Here is a data library with PMT signals |
+ | The dynamic rage is from 1 pC to 2000 pC. The data are collected using R5900 PMT with active dividers | ||
+ | with 4 ns pulse width and David' | ||
+ | The talk that describes this study is [[https:// | ||
+ | |||
+ | Download the signal files from [[https:// | ||
+ | |||
+ | <code bash> | ||
+ | wget --no-check-certificate https:// | ||
+ | cd pmt_signals_phase2/ | ||
+ | python show_trace.py data/ | ||
+ | </ | ||
+ | |||
+ | We used several 50% (0.3) neutral density filters (NDF50), and 1 neutral density filter x16 (NDF16). | ||
+ | Data files with traces are in " | ||
+ | The file names has a letter " | ||
+ | |||
+ | - D1 NDF16 + 6xNDF50. Reduction of light by 6*2*16. About 0.3 pc -> x1024 | ||
+ | - D2 NDF16 + 5xNDF50 -> x512 | ||
+ | - D3 NDF16 + 4xNDF50 -> x256 | ||
+ | - D4 NDF16 + 3xNDF50 -> x128 | ||
+ | - D5 NDF16 + 2xNDF50 -> x64 | ||
+ | - D6 NDF16 + 1xNDF50 -> x32 | ||
+ | - D7 NDF16 (light reduction by a factor 16) -> x16 | ||
+ | - D8 3xNDF50 -> x8 | ||
+ | - D9 2xNDF50 -> x4 | ||
+ | - D10 1xNDF50 | ||
+ | - D11 - no NDF. About 2000 pC ->0 | ||
+ | |||
+ | Figures for 1000 traces are in " | ||
+ | |||
+ | {{: | ||
+ | |||
+ | Blue lines show traces before the noise removal, and small grey dots after the noise suppression. The green dots show the noise in the LED driver. | ||
+ | |||
+ | --- // |