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Message ID: 4616
Entry time: Tue May 3 16:20:13 2011
In reply to: 4599
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| Author: |
steve |
| Type: |
Update |
| Category: |
SUS |
| Subject: |
PRM & BS oplevs are ready |
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| Quote: |
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The returning spot diameter on the qpd ~10 mm. In order to reduce the spot size I moved the f 1145 mm lens toward the PRM ~ 25 cm. The spot size was reduced to ~8 mm, 3200 counts.
I'll try to find an other lens tomorrow.
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Atm 1, PRM oplev inward path with 2 lens solution: 14 cm gap between F 1145 and F 1545 mm lenses.
Atm 2, The PRM beam size 3 mm and the beam quality is still bad. The BS path only needed alignment. |
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