CFT Installation

The CFT project description can be found here.

Scintillating fibers of the CFT are grouped into two staggered layers of 128 fibers each, forming a ribbon. Ribbon with an optical curved connector is mated/glued (RTV) to a similar connector of optical fibers - Light Guides (LG). LGs are terminated with two squared connectors that mate into the cassettes of VLPC's.

The Light Yield (LY) can be controlled, in particular, by illuminating the ribbons with an LED panel. Each LED panel spans almost three ribbons. An example of the VLPC performance as seen at DAB for the CFT readout chain can be found here.

This page is a summary of data taken at Lab 3 (for individual ribbons and LGs) and DAB (after gluing/installing the LGs). Details on data taking and analysis can be found here (for Lab 3 data) and here (for CFT installation at DAB).
Clicking LG, H through A, brings the summary plots of LGs QC for the whole cylinder (Lab 3 data); columns LG list results taken at DAB (so combination of ribbon plus LG) and columns Rib show QC data for ribbons (Lab 3).

Summary plots on the light yield measurements at DAB for the entire tracker (axial and stereo fibers) can be found here.

Axial Light Guide to Ribbon Connection Map

LG 
H
Rib
8A
LG 
G
Rib
7A
LG 
F
Rib
6A
LG 
E
Rib 
5A
LG 
D
Rib 
4A
LG 
C
Rib
3A
LG 
B
Rib
2A
LG 
A
Rib
1A
1
58
1
5
1
17
1
13
1
10
1
108
1
23
1
15
2
52
2
18
2
16
2
12
2
9
2
107
2
22
2
13
3
65
3
16
3
15
3
11
3
8
3
106
3spl
21
3
14
4
68
4
32
4
13
4
9
4spl
3
4
104
4
19
4
22
5
71
5
31
5spl
8
5
8
5
5
5
103
5
18
5
21
6spl
66
6
30
6
7
6
7
6
4
6
102
6
311/2
6
20
7
72
7
29
7
6
7
6
7
2
7
111
7
30
7
19
8
43
8
28
8
5
8
5
8
231/2
8
114
8
29
8
18
9
42
9
27
9
4
9
3
9
18
9
117
9
28
9
17
10
39
10
26
10
31/2
10
2
10
15
10
116
10
27
10
16
11
36
11
21
11
31
11
1
11
20
11
115
11spl
26
    
12
691/2
12
20
12
30
12
25
12
19
12
118
12
25
    
13
50
13
19
13
29
13
24
13
17
13
113
13
24
    
14
57
14
22
14
28
14
22
14
16
14
112
        
15
62
15
15
15
27
15
20
15spl
21
15
109
        
16
56
16
12
16
26
16
18
16
14
            
17
67
17
11
17
25
17
17
17
13
            
18
54
18
7
18
23
18
16
18
11
            
19
53
19
8
19spl
22
19
15
                
20
55
20
9
20
21
20
4
                
21
49
21
10
21
20
                    
22
61
22
1
22
19
                    
23spl
60
23
2
23
18
                    
24
48
24
3
                        
25
63
25
4
                        
26
64
                            
27
59
                            
28
41
                            

 

Stereo Light Guide to Ribbon Connection Map

LG 
H
Rib
8S
LG 
G
Rib
7S
LG 
F
Rib
6S
LG 
E
Rib 
5S
LG 
D
Rib 
4S
LG 
C
Rib
3S
LG 
B
Rib
2S
LG 
A
Rib
1S
1
24
1
14
1
20
1
6
1
15
1
110
1
24
1
11
2
9
2
15
2
22
2
11
2
16
2
111
2
25
2
12
3
17
3
16
3
23
3
13
3
17
3
112
3
26
3
1
4
33
4
17
4
24
4
14
4
23
4
113
4
28
4
2
5
35
5
18
5
21
5
9
5
24
5
114
5
27
5
3
6
31
6
19
6
25
6
12
6
25
6
115
6
151/2
6
4
7
22
7
20
7
26
7
15
7
26
7
101
7
17
7
5
8
30
8
21
8
28
8
16
8
211/2
8
102
8
18
8
6
9
12
9
23
9
29
9
17
9
2
9
103
9
21
9
9
10
23
10
25
10
11/2
10
18
10
3
10
104
10
19
10
10
11
6
11
26
11
3
11
19
11
5
11
105
11
22
    
12
11/2
12
27
12
4
12
21
12
6
12
106
12
20
    
13
7
13
28
13
5
13
22
13
7
13
107
13
23
    
14
16
14
29
14
10
14
23
14
8
14
108
        
15
15
15
30
15
11
15
8
15
9
15
109
        
16
28
16
9
16
12
16
2
16
12
            
17
19
17
1
17
13
17
3
17
13
            
18
27
18
2
18
14
18
4
18
14
            
19
20
19
3
19
15
19
7
                
20
29
20
4
20
6
20
5
                
21
4
21
5
21
17
                    
22
5
22
8
22
18
                    
23
11
23
10
23
19
                    
24
14
24
11
                        
25
25
25
13
                        
26
34
                            
27
13
                            
28
10
                            

avto@fnal.gov

Updated: 12/14/2000