Test Pulse Neighbors #3 Carl Goodrich 9/18/07
Electronic ID – Software ID Map Eid Sid location 0 682inner 12046outer 22047outer 32045outer 4 681inner 5 680inner 62044outer 72043outer 82042outer 9 679inner outer outer Pattern InnerOuter pattern repeats every 12 channels
Pattern in the links Repeating pattern of 12 channels groups of channels channels in links 0 – 11 0 – – 2332 – – 3564 – – 4796 – – 59 … 60 – – – – 107 … 3 possible configurations of 32 channels C0C1C2C0C1C2
From Last Time All Phi Detectors Channels 6 and 21 in links 1, 4, 7, 10, … –Double-Gaussian distribution Approximately symmetric about 0 (mean ≈ 0) TP injected into channels 4 and 23
Cause: Inner vs. Outer Strips? All 2 nd neighbor effects were observed in C 1 links Effects not observed for R detectors –Due to front-end electronics. C 0 : … C 1 : … C 2 : … Black: outerRed: inner
Why the second neighbor? Possibly the PaPad… This pattern repeats for ALL links Not the cause Might explain why it is observed in second neighbors
TELL1 27, link 9 (C 0 ) Ch.4 Ch.23
TELL1 27, link 10 (C 1 ) Ch.4 Ch.23
TELL1 27, link 11 (C 2 ) Ch.4 Ch.23