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