Meaning of Geometrical Indeces
cellID I, J, K: to each cell (tile+ SiPM) in a module is assigned a pair of ID numbers (I,J) according to:
high resolution version,high resolution version
Note0: I = x, J = y -> lower left I/J = 19/1
Note1: The sketch is a look from the back (i.e. looking into the beam).
In this scheme K should correspond to layer. However the layer numbering starts with 1, whereas the value, which is encoded in the cellID is "layer-1" i.e. starts with 0 (to be checked).
HCAL longitudinal setup
During our different data taking periodes the HCAL stack occupancy changed, while more and more modules were produced. This table should give an overview of which module was located where during which run periode. Note that we start and finish the HCAL stack with an absorber plate.
* In August '06 we started with 36 absorber plates and 15 active modules. Each 2nd was interleved with an active layer, until 15 active layers had been used. The remaining absorber plates were just filled by air. All active layers were high granular modules with 216 tiles each.
* In October '06 we had 31 absorber plates and 23 active modules. From layer 1 - 17, each absorber was followed by an active layer. In layer 18 - 30 only every 2nd layer was filled with an active module. All active layers were high granular modules with 216 tiles each. Modules 1 & 2 have accidentaly been operated at a wrong voltage during this periode, and should therefore be excluded from any analysis
* For the full 2007 dataset, the HCAL stack was completed. We had 38 absorber plates interleaved with 38 active modules. Layer 1 - 30 were equipped with high granular modules (216 tiles each), whereas layer 31 - 38 consisted of corse module (no 3x3 tiles -> 149 tiles each)
layer |
module in August '06 |
module in October '06 |
module in '07 |
1 |
1 |
4 |
3 |
2 |
not equipped |
5 |
4 |
3 |
4 |
6 |
5 |
4 |
not equipped |
8 |
6 |
5 |
12 |
9 |
7 |
6 |
not equipped |
11 |
8 |
7 |
3 |
12 |
9 |
8 |
not equipped |
13 |
10 |
9 |
5 |
14 |
11 |
10 |
not equipped |
15 |
12 |
11 |
6 |
17 |
13 |
12 |
not equipped |
18 |
14 |
13 |
7 |
19 |
15 |
14 |
not equipped |
20 |
16 |
15 |
8 |
21 |
17 |
16 |
not equipped |
22 |
18 |
17 |
9 |
23 |
19 |
18 |
not equipped |
not equipped |
20 |
19 |
11 |
16 |
21 |
20 |
not equipped |
not equipped |
22 |
21 |
13 |
7 |
23 |
22 |
not equipped |
not equipped |
25 |
23 |
2 |
10 |
26 |
24 |
not equipped |
not equipped |
27 |
25 |
14 |
3 |
28 |
26 |
not equipped |
not equipped |
29 |
27 |
10 |
2 |
30 |
28 |
not equipped |
not equipped |
1 |
29 |
15 |
1 |
2 |
30 |
not equipped |
not equipped |
24 |
31 |
not equipped |
missing |
36 |
32 |
not equipped |
missing |
31 |
33 |
not equipped |
missing |
32 |
34 |
not equipped |
missing |
33 |
35 |
not equipped |
missing |
34 |
36 |
missing |
missing |
35 |
37 |
missing |
missing |
37 |
38 |
missing |
missing |
38 |
* not equipped indicates a gap between absorber plates
* missing indicates that also the absorber plates have not been there
I/J to chip/channel
http://www.desy.de/~richters/IJ-to-chip-channel/
You find an image map which maps I/J to chip/channel. Hover your mouse cursor over a cell and the chip and channel will appear. It uses the title feature of an area in an image map. It works with firefox, mozilla and opera, but not with konqueror.