Central Points of TTs in eta & phi
Translations between iphi(TT) / ieta(TT) and physical eta / phi
of the center of the TT are given below. Remeber that TTs have
an extent of 0.2 in eta and phi.
| TT |ieta| | Cable | Detector eta & phi | Comments |
| all | EM & Had | phi = (iphi - 0.5) x 2pi/32 | |
| <=16 | EM & Had | eta = sign(ieta) x (|ieta| - 0.5) x 0.2 | EM: include only EM cells Had: include only FH cells |
| 17 | EM Had |
<eta> = 3.45 <eta> = 3.45 |
EM: include only EM cells Had: include only FH cells |
| 18 | EM Had |
<eta> = 3.9 <eta> = 4.1 |
EM: include only EM cells Had: include only FH cells |
| 19 | EM Had |
<eta> = 0.95 <eta> = 1.25 |
MG: add to ieta=5 Had ICD & MG: add to ieta=7 EM |
| 20 | EM Had |
<eta> = 0.75 <eta> = 1.05 |
MG: add to ieta=4 Had MG: add to ieta=6 Had |
TT Mapping in the ADFs and TABs
Each TAB receives as input all TTs in eta for its phi slices. Because of the nature of the search region of the Sliding Windows algorithm, only a limited range of Jet objects is output. The input and output of each TAB in ieta is given below:
| TT eta | TAB eta | |
| Input | -20 - +20 | 0 - 39 |
| Output | -16 - +15 | 4 - 34 |
The TABs all receive and output different phi regions, shown in the table below. In the table, each TAB's 9 phi inputs are shown as numbers 0-8 with a cyan backgroun, while its outputs are shown in boldface in a magenta background.
| TAB n Local phi | |||||||||
| TT phi | TAB/GAB Global phi |
0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| 01 | 00 | 2 | 6 | ||||||
| 02 | 01 | 3 | 7 | ||||||
| 03 | 02 | 4 | 0 | 8 | |||||
| 04 | 03 | 5 | 1 | ||||||
| 05 | 04 | 6 | 2 | ||||||
| 06 | 05 | 7 | 3 | ||||||
| 07 | 06 | 8 | 4 | 0 | |||||
| 08 | 07 | 5 | 1 | ||||||
| 09 | 08 | 6 | 2 | ||||||
| 10 | 09 | 7 | 3 | ||||||
| 11 | 10 | 8 | 4 | 0 | |||||
| 12 | 11 | 5 | 1 | ||||||
| 13 | 12 | 6 | 2 | ||||||
| 14 | 13 | 7 | 3 | ||||||
| 15 | 14 | 8 | 4 | 0 | |||||
| 16 | 15 | 5 | 1 | ||||||
| 17 | 16 | 6 | 2 | ||||||
| 18 | 17 | 7 | 3 | ||||||
| 19 | 18 | 8 | 4 | 0 | |||||
| 20 | 19 | 5 | 1 | ||||||
| 21 | 20 | 6 | 2 | ||||||
| 22 | 21 | 7 | 3 | ||||||
| 23 | 22 | 8 | 4 | 0 | |||||
| 24 | 23 | 5 | 1 | ||||||
| 25 | 24 | 6 | 2 | ||||||
| 26 | 25 | 7 | 3 | ||||||
| 27 | 26 | 8 | 4 | 0 | |||||
| 28 | 27 | 5 | 1 | ||||||
| 29 | 28 | 6 | 2 | ||||||
| 30 | 29 | 7 | 3 | ||||||
| 31 | 30 | 0 | 8 | 4 | |||||
| 32 | 31 | 1 | 5 | ||||||
| TT phi | TAB/GAB Global phi |
0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
Differnces in ADF and TAB Numbering Conventions
The TABs and GAB use a different eta,phi numbering convention than the
TT ieta,iphi.
| Range (TAB/GAB) | Range (TT) | Conversion | |
| phi | 0 - 31 | 1 - 32 |
iphi(TAB) = iphi(TT) - 1 iphi(TT) = iphi(TAB) + 1 |
| eta | 0 - 39 | -20 -- -1 & 1 -- 20 |
ieta(TAB) = ieta(TT) + 20 - [sign(ieta)+1]/2 ieta(TT) = ieta(TAB) - 20 (ieta(TAB)<20) ieta(TT) = ieta(TAB) - 19 (ieta(TAB)>=20) |