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--- phase2:led [2015/07/17 19:16]
asc
+++ phase2:led [2015/08/04 18:35]
asc
@@ Line 10: / Line 10: @@
 wget --no-check-certificate https://atlaswww.hep.anl.gov/asc/phase2/data/pmt_signals_phase2.tgz -O - | tar -xz;
 cd pmt_signals_phase2/
-python show_trace.py data/D1_traces_full.txt.gz 1
+python show_trace.py data/D1_traces_full.txt.gz 1 # show 1st trace out of 1000
 </code>
@@ Line 17: / Line 17: @@
 The file names has a letter "D" that indicates attenuation strength for the light.
-  - D1 NDF16 + 6xNDF50 - 16x2x6 light reduction (1 pC)
+  - D1 NDF16 + 6xNDF50. Reduction of light by 6*2*16. About 0.3 pc -> x1024
-  - D2 NDF16 + 5xNDF50
+  - D2 NDF16 + 5xNDF50 -> x512
-  - D3 NDF16 + 4xNDF50
+  - D3 NDF16 + 4xNDF50 -> x256
-  - D4 NDF16 + 3xNDF50
+  - D4 NDF16 + 3xNDF50 -> x128
-  - D5 NDF16 + 2xNDF50
+  - D5 NDF16 + 2xNDF50 -> x64
-  - D6 NDF16 + 1xNDF50
+  - D6 NDF16 + 1xNDF50 -> x32
-  - D7 NDF16  (light reduction by a factor 16)
+  - D7 NDF16  (light reduction by a factor 16) -> x16
-  - D8 3xNDF50
+  - D8 3xNDF50 -> x8
-  - D9  2xNDF50
+  - D9  2xNDF50 -> x4
-  - D10 1xNDF50  (light reduction by a factor 2)
+  - D10 1xNDF50  (light reduction by a factor 2) -> x2
-  - D11  - no NDF. About 2000 pC
+  - D11  - no NDF. About 2000 pC ->0
 Figures for 1000 traces are in "figures".  Each trace was centralized at time=0. We use a numeric noise suppression for all traces as shown in this image.
@@ Line 33: / Line 33: @@
 {{:noise.png}}
-Blue lines show traces before the noise, and small grey dots after the noise suppression. The green dots show the noise in the LED driver.
+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.
  --- //[[[email protected]|Sergei Chekanov]] 2015/07/17 14:00//

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