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ryutaro.takahashi - 23:52 Thursday 04 April 2024 (29088) Print this report
Comment to Replacement of feedthrough flange (29004)

[Hirata, Washimi, Takahashi]

We removed aluminum foils from the in-vacuum Dsub connectors at the P2 feedthrough flange. Some cables for 2:SF-LV, 3:TM-H2, and 6:IM-H1 were cut at the Dsub connectors during this work. They were repaired. The flange was closed with screws temporally. We checked the resistance between all pins in each Dsub connecter on the flange without the flip cables. 

  Before After Inductance

1:PI LV1

1-6

2-7

3-8

4-9

5-G

 

317Ω

248Ω

146Ω

OL

OL

 

317Ω

248Ω

146Ω

OL

OL

35.34mH

52.41mH

61.54mH

 

2:SF LV

1-6

2-7

3-8

4-9

5,6-G

 

198Ω

78.7Ω

111Ω

OL

0,0.4Ω

 

198Ω

78.5Ω

111Ω

OL

0,1.7Ω

39.16mH

10.11mH

68.99mH

 

3:TM H2

1-6

2-7

3-8

4-9

5-G

 

OL

18.6Ω

OL

OL

OL

 

OL

18.6Ω

OL

OL

OL

 

8.635mH

 

 

4:F0 LV

1-6

2-7

3-8

4-9

5-G

 

196Ω

77.1Ω

114Ω

OL

0.5Ω

 

196Ω

77.0Ω

114Ω

OL

OL

42.58mH

10.57mH

73.96mH

 

5:PI FR

1-6

2-7

3-8

4-9

 

4.8Ω

4.8Ω

3.2Ω

3.3Ω

 

5.1Ω

5.1Ω

3.2Ω

3.3Ω

 

 

 

 

 

6:IM H1

1-6

2-7

3-8

4-9

5-G

 

5.8MΩ

17.7Ω

OL

OL

4.3Ω

 

5.8MΩ

18.1Ω

OL

OL

0.0Ω

0.449V(6+)

8.357mH

0.950V(3+)

 

7:TM H3

1-6

2-7

3-8

4-9

5-G

 

OL

18.5Ω

OL

OL

OL

 

OL

18.7Ω

OL

OL

OL

 

8.662mH

 

 

8:PI SM

1-6

2-7

3-8

4-9

 

6.6Ω

6.8Ω

6.1Ω

5.2Ω

 

6.0Ω

7.0Ω

6.1Ω

6.1Ω

 

 

 

 

 

 

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