vincent.lhuillier@LIGO.ORG - posted 12:23, Wednesday 07 March 2012 (2381)
Actuators resistances ISI-BSC8
Yesterday, we measured the resistances of the 12 actuators on ISI-BSC8. The table below shows the measured resistance when the ISI was:
- in the staging building
- on the teststand in the LVEA
- in the chamber (March 6, 2012)
Field cables in the LVEA are about 1 ohm. Resistances measured after the important drive are similar to those measured when the ISI was on the LVEA teststand. There are no obvious signs of damage on these actuators.
| Staging building | LVEA Teststand | Chamber after large drive | |
| Actuators | Resistance (ohm) | Resistance (ohm) | Resistance (ohm) |
| ST1 H1 | 6.4 | 7.5 | 7.4 |
| ST1 H2 | 6.6 | 7.4 | 7.4 |
| ST1 H3 | 6.6 | Not measured | 7.4 |
| ST1 V1 | 6.4 | 7.5 | 7.5 |
| ST1 V2 | 6.6 | 7.4 | 7.5 |
| ST1 V3 | 6.6 | Not measured | 7.5 |
| ST2 H1 | 10.3 | 11.3 | 11.3 |
| ST2 H2 | 10.3 | 11.1 | 11.1 |
| ST2 H3 | 10.1 | Not measured | 11.1 |
| ST2 V1 | 10.1 | 11.1 | 11.2 |
| ST2 V2 | 10.3 | 11.1 | 11.2 |
| ST2 V3 | 10.5 | Not measured | 11.3 |