[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 |
|