report before christmas n.bondar 18.12.2008. marathon modification according request of the viener...
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Report before Christmas
N.Bondar
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 resultsSituazione cavi M1C 31/10/08
SB Lunghezza effettiva cavi Retested with the pulse reflectometer
Num. cavo SB slot I2c Chan len (m) length (m) delta (m)delta (ns) @20cm/ns
delta (ns) @19.76cm/ns
measured delay (ns)
126
EC-M1C-15A1-1 1 0 14.47 14.48 -0.01 -0.05 -0.05 73
EC-M1C-15A1-2 1 1 14.45 14.48 -0.03 -0.15 -0.15 73
EC-M1C-15A1-3 1 2 14.40 14.43 -0.03 -0.15 -0.15 73
EC-M1C-15A1-4 1 3 14.38 14.43 -0.05 -0.25 -0.25 73
EC-M1C-15A2-1 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
Some results have a very good agreement with Valerio’s table
120
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
SB Lunghezza effettiva cavi Retested with the pulse reflectometer
Num.Cable
SB slot
I2c Chan
Len ( meters )
lungh (m)
Len. (m)
delta (m)
delay (ns)
delta (ns) @20cm/ns
delta (ns) @19.76cm/ns
Some results have offset about 1.5 ns
026
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
SB Lunghezza effettiva cavi Retested with the pulse reflectometer
Num.Cable
SB slot
I2c Chan
Len ( meters )
lungh (m)
Len. (m)
delta (m)
delay (ns)
delta (ns) @20cm/ns
delta (ns) @19.76cm/ns
Some results have very large disagreement >5 ns
Also found 3 failure connectors