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 Mon Jan 28 19:15:14 2013, Manasa, Update, Scattering, Scattering setup
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 Wed Jan 30 11:18:31 2013, Manasa, Update, Scattering, Scattering setup
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Thu Jan 31 11:53:31 2013, Manasa, Update, Scattering, Scattering setup
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Tue Feb 12 23:22:14 2013, Manasa, Update, Scattering, Scattering setup
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Message ID: 7971
Entry time: Thu Jan 31 11:53:31 2013
In reply to: 7962
Reply to this: 8072
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| Author: |
Manasa |
| Type: |
Update |
| Category: |
Scattering |
| Subject: |
Scattering setup |
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Since we are in air, we came up with a plan B. The plan is to temporarily install a mirror in the ITMY chamber to steer the beam from the laser pointer (installed on the POY table) through ITMY to the pickoff mirror at the ETMY end. This way, we can install the camera at the ETMY window and be sure we are looking at ITMY scattered light.
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[Jan,Manasa]
We executed plan B. We installed the green laser pointer on POY table and steered the beam through ITMY to hit the pick off mirror at the ETM end by installing *temporary mirrors. The pick off mirror was adjusted in pitch and yaw to center the reflected beam on the viewport window. We have installed irides on the ring attached to the viewport window to direct the beam to the camera.
*Temporary mirrors were removed from the ITMY chamber after this alignment. |