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| 40m Log |
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 Thu Jun 14 21:37:37 2012, yuta, Update, Green Locking, succeeded in 1FSR mode scan 
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 Fri Jun 15 00:50:54 2012, yuta, Update, Green Locking, scanned Y arm for 5FSR
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Fri Jun 15 01:53:05 2012, Koji, Update, Green Locking, scanned Y arm for 5FSR
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Sat Jun 16 12:03:41 2012, Zach, Update, Green Locking, scanned Y arm for 5FSR
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Sat Jun 16 13:01:17 2012, yuta, Update, Green Locking, scanned Y arm for 5FSR
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Sat Jun 16 18:17:00 2012, yuta, Update, Green Locking, Y arm length using 5FSR scan
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Sat Jun 16 18:51:44 2012, Koji, Update, Green Locking, Y arm length using 5FSR scan
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Sat Jun 16 19:32:11 2012, yuta, Update, Green Locking, Y arm length using 5FSR scan
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Message ID: 6826
Entry time: Sat Jun 16 18:51:44 2012
In reply to: 6825
Reply to this: 6827
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| Author: |
Koji |
| Type: |
Update |
| Category: |
Green Locking |
| Subject: |
Y arm length using 5FSR scan |
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| Quote: |
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Calibrating beat frequency to Y arm length change;
I used L = 32.36 m (figure above, bottom plot).
dnu_g / dL = c / lamb_g / L = 1.74 MHz/m
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Wow. This is way too short.
You don't need to use Albertoo's arm length as his measurement was done before the upgrade. |