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fabian.arellano - 12:19 Wednesday 19 January 2022 (19503) Print this report
Comment to In-vacuum cable health check at outer side of flanges in Type-B suspensions. (18214)

With Hirata-san and Nakagaki-san.

After we changed the flip cable adapters in Type-B suspensions, we checked again the health of the cables by measuring capacitance, resistance and capacitance values. I compiled the results of the three suspensions in a single file to make comparison easy.

We found the following potential problems:

  • BS F0 FR pins 2-7 (P2-5): the resistance value is 10.7 Ohm, which is  several Ohm higher than expected (e.g. 4.7 Ohm in SR2); the value was confirmed by Hirata-san and Nakagaki-san today.
  • SR2 IM V3 OSEM pins 2-7 (P3-3): the resistance is 22.3 Ohm, which is higher than in others OSEMs (20.1 Ohm maximum); the value was confirmed by Hirata-san and Nakagaki-san today.
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