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:

cellids-fine-small.png cellids-coarse-small.png

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.

Geometry (last edited 2009-06-18 15:57:11 by JörgenSamson)