Pdt orientation in space
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cell_0 r f z. A - Layer. B - Layer. C - Layer. lo lo lo. 0 X 0, 0 X 1, 0 X 5 X = 1 , 2 , 3. 115 , 135. 2 X 0,2 X 1,2 X 4,2 X 5 X = 0 , 1 , 2 , 3 , 4. lo hi hi. 0 X 2, 0 X 3, 0 X 6 X = 1 , 2 , 3. 116 , 136.

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PDT Orientation in Space

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Pdt orientation in space

cell_0

r fz

A - Layer

B - Layer

C - Layer

lo lo lo

0X0, 0X1, 0X5

X = 1 , 2 , 3

115 , 135

2X0,2X1,2X4,2X5

X = 0 , 1 , 2 , 3 , 4

lo hi hi

0X2, 0X3, 0X6

X = 1 , 2 , 3

116 , 136

2X2,2X3,2X6,2X7

X = 0 , 1 , 2 , 3 , 4

hi lo hi

1x0 , 1x1 , 1x4

x = 0, 1, 2, 3, 4

106 146

hi hi lo

1x2 , 1x3 , 1x7

x = 0, 1, 2, 3, 4

105 145

A.Maciel (N.I.U.)

L2-Muon

PDT Orientation in Space

Nb; All chambers remain as in Run-I , except 115, 135, 116, 136 which are (x,p) rotated


Pdt orientation in space

A.Maciel

(N.I.U.)

L2-Muon

Cell 0 Position for East Chambers as Seen from East

( Assembly Bay View )

241

221

201

141

121

101

Toroid

031

021

011

Cell Stagger

(C)

0

Cell Stagger

(A)

0

Calorimeter

North

South

(B)

0

036

026

016

Toroid

E-away

146

136

116

106

E-away

246

206

Note chambers 116 and 136 rotated (x,p) w.r.to run-1

West seen from West reproduces same cell-0 pattern

146 116 E-away

All others E-near


Pdt orientation in space

Central PDT’s Local fOrientation Map

A.Maciel

(N.I.U.)

L2-Muon

Electronics

Readout

Boards

Toroids

EAST

WEST

Calorimeter

Bottom

B-Layer exceptions

Bottom

B-Layer exceptions

115

135

116

136

105 145

106 146


Pdt orientation in space

Scintillator Coverage for Central PDT’s

Z

Central C-layer PDT

Central A-layer PDT

C D

E F

A

B

C

D

E

A

B

C

D

E

8 9

A B

5

6

7

8

9

5

6

7

8

9

4 5

6 7

0

1

2

3

4

0

1

2

3

4

0 1

2 3

φ

For Aφ counters, each

SFE holds a half octant


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