N.Bondar
Report before Christmas
18.12.2008
Marathon modification
• According request of the VIENER we
modified all LV power supplies by installing
additional diode into the Primary Rectifier
for muon detector.
Total number of modules -19 pc.
M1 ECS cables measurement
• To measure ECS cable we are using a special
tool based on the pulse reflectometer idea.
• Accuracy of this tool ~10cm  5 ns.
• The table of the results is in the E-Log.
Special tools was designed and made by
Sasha Granik
Pincers for plugging ground tail
Special tools was designed and made by
Sasha Granik
Pincers for unplug connectors
Comments to results
Situazione cavi M1C 31/10/08
SB
Num.
126
Lunghezza effettiva cavi
Retested with the pulse reflectometer
delta (ns)
@20cm/ns
delta (ns)
@19.76cm/ns
measured
delay (ns)
-0.01
-0.05
-0.05
73
14.48
-0.03
-0.15
-0.15
73
14.40
14.43
-0.03
-0.15
-0.15
73
3
14.38
14.43
-0.05
-0.25
-0.25
73
1
4
14.53
14.43
0.10
0.50
0.51
73
EC-M1C-15A2-2
1
5
14.40
14.43
-0.03
-0.15
-0.15
73
EC-M1C-15A2-3
1
6
14.38
14.43
-0.05
-0.25
-0.25
73
EC-M1C-15A2-4
1
7
14.36
14.43
-0.07
-0.35
-0.35
73
EC-M1C-16A2-1
1
8
14.51
14.53
-0.02
-0.10
-0.10
74
EC-M1C-16A2-2
1
9
14.47
14.33
0.14
0.70
0.71
73
EC-M1C-16A2-3
1
10
14.40
14.38
0.02
0.10
0.10
73
EC-M1C-16A2-4
1
11
14.39
14.33
0.06
0.30
0.30
73
cavo
SB slot
I2c Chan
len (m)
length (m)
EC-M1C-15A1-1
1
0
14.47
14.48
EC-M1C-15A1-2
1
1
14.45
EC-M1C-15A1-3
1
2
EC-M1C-15A1-4
1
EC-M1C-15A2-1
delta (m)
Some results have a very good agreement with Valerio’s table
SB
Num.
120
Lunghezza effettiva cavi
Retested with the pulse reflectometer
Cable
SB
slot
I2c
Chan
Len
( meters )
lungh
(m)
Len.
(m)
delta
(m)
EC-M1A-17A2-1
2
0
19
16.68
16.26
0.42
82
2.1
2.13
EC-M1A-17A2-2
2
1
19
16.71
16.41
0.30
83
1.5
1.52
EC-M1A-17A2-3
2
2
19
16.10
15.82
0.28
80
1.4
1.42
EC-M1A-17A2-4
2
3
19
16.69
16.36
0.33
83
1.65
1.67
EC-M1A-18A1-1
2
4
20
17.07
16.76
0.31
85
1.55
1.57
EC-M1A-18A1-2
2
5
20
16.99
16.71
0.28
85
1.4
1.42
EC-M1A-18A1-3
2
6
20
16.96
16.71
0.25
85
1.25
1.27
EC-M1A-18A1-4
2
7
20
17.08
16.76
0.32
85
1.6
1.62
EC-M1A-18A2-1
2
8
19
15.97
15.67
0.30
79
1.5
1.52
EC-M1A-18A2-2
2
9
19
15.92
15.67
0.25
79
1.25
1.27
EC-M1A-18A2-3
2
10
19
15.94
15.52
0.42
79
2.1
2.13
EC-M1A-18A2-4
2
11
19
15.73
15.47
0.26
78
1.3
1.32
Some results have offset about 1.5 ns
delay
(ns)
delta (ns)
@20cm/ns
delta (ns)
@19.76cm/ns
SB
Num.
026
Lunghezza effettiva cavi
Retested with the pulse reflectometer
Cable
SB
slot
I2c
Chan
Len
( meters )
lungh
(m)
Len.
(m)
delta
(m)
delay
(ns)
EC-M1A-30A
19
0
27
23.04
22.1
0.94
112
4.7
4.76
EC-M1A-30B
19
1
26
21.99
21.21
0.78
107
3.9
3.95
EC-M1A-30C
19
2
25
20.71
19.87
0.84
101
4.2
4.25
EC-M1A-30D
19
3
24
20.22
18.98
1.24
96
6.2
6.28
EC-M1A-31A
19
4
27
22.60
21.61
0.99
99
4.95
5.01
EC-M1A-31B
19
5
26
21.84
20.91
0.93
106
4.65
4.71
EC-M1A-31C
19
6
25
20.95
20.02
0.93
101
4.65
4.71
EC-M1A-31D
19
7
24
19.75
19.23
0.52
97
2.6
2.63
EC-M1A-32A
19
8
27
23.06
22
1.06
111
5.3
5.36
EC-M1A-32B
19
9
26
22.02
20.96
1.06
106
5.3
5.36
EC-M1A-32C
19
10
25
20.99
20.07
0.92
102
4.6
4.66
EC-M1A-32D
19
11
24
20.55
19.18
1.37
97
6.85
6.93
Some results have very large disagreement >5 ns
Also found 3 failure connectors
delta (ns)
@20cm/ns
delta (ns)
@19.76cm/ns