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Size: 698
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Size: 1593
Comment:
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| Deletions are marked like this. | Additions are marked like this. |
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| * Reported later, the main reason the vibration to the OMC legs for the optical table inside the vacuum | * Reported later, the main reason is the vibration to the OMC legs for the optical table inside the vacuum |
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| * | * Reported later, the main reason is the vibration to the OMC legs for the optical table inside the vacuum |
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| * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=13105|klog13105]] * Now we didn't use the AS PD signals for interferometer control * There was possibility that the reflection light from AS table make dirty scattering light * Shadowed between the OMC viewport and AS table, but we couldn't see the clear noise reduction * Also, when we added vibration to the OMC viewport, we couldn't detect the noise increasing. * Hammering test SRM chamber (Done 22nd Feb.) * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=13105|klog13105]] * The SRM mirror is misaligned. So We need to investigate the scattering light from SRM mirror * In this test, we can see the excess above 100 Hz * After this test, we cannot lock the interferometer. So if we have a time, we want to check again. |
Memo for Commissioning break (Mar. 2020)
- Hammering test
Task list (Done)
- Hammering test of the OMC chamber (Done 22nd Feb.)
- There is excess in the sensitivity between 100 Hz to 400 Hz
- Reported later, the main reason is the vibration to the OMC legs for the optical table inside the vacuum
- Hammering test AS table (Done 22nd Feb.)
- Reported later, the main reason is the vibration to the OMC legs for the optical table inside the vacuum
- Reflection light check (Done 22nd Feb.)
- Now we didn't use the AS PD signals for interferometer control
- There was possibility that the reflection light from AS table make dirty scattering light
- Shadowed between the OMC viewport and AS table, but we couldn't see the clear noise reduction
- Also, when we added vibration to the OMC viewport, we couldn't detect the noise increasing.
- Hammering test SRM chamber (Done 22nd Feb.)
- The SRM mirror is misaligned. So We need to investigate the scattering light from SRM mirror
- In this test, we can see the excess above 100 Hz
- After this test, we cannot lock the interferometer. So if we have a time, we want to check again.
Task list (Partially done)
Task list (todo ; must items)
Task list (todo ; if possible)