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40m Log |
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Tue Aug 14 23:14:24 2018, aaron, Update, OMC, OMC scanning/aligning script
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Tue Nov 20 20:33:11 2018, aaron, Update, OMC, OMC scanning/aligning script  
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Mon Nov 26 15:43:16 2018, aaron, Update, OMC, OMC scanning/aligning script
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Thu Dec 6 11:16:28 2018, aaron, Update, OMC, OMC channels
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Mon Dec 10 12:29:05 2018, aaron, Update, OMC, OMC channels  
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Mon Dec 10 19:47:06 2018, aaron, Update, OMC, OMC channels
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Tue Dec 11 13:42:44 2018, Koji, Update, OMC, OMC channels
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Tue Dec 11 13:48:04 2018, aaron, Update, OMC, OMC channels
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Thu Dec 13 22:24:21 2018, aaron, Update, OMC, OMC channels
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Mon Dec 10 12:11:28 2018, aaron, Update, OMC, Aligning the OMC
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Tue Dec 11 14:24:18 2018, aaron, Update, OMC, Aligning the OMC
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Tue Dec 11 22:50:07 2018, aaron, Update, OMC, Aligning the OMC 6x
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Thu Dec 13 22:36:42 2018, aaron, Update, OMC, Aligning the OMC
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Fri Dec 14 13:02:24 2018, aaron, Update, OMC, Aligning the OMC
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Fri Dec 14 13:06:12 2018, aaron, Update, OMC, Aligning the OMC
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Mon Dec 17 20:45:40 2018, aaron, Update, OMC, Aligning the OMC 
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Tue Dec 18 18:13:32 2018, aaron, Update, OMC, OMC L HV Piezo driver tests (again)
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Wed Dec 19 00:12:46 2018, gautam, Update, OMC, 40m OMC DCC node
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Message ID: 14366
Entry time: Wed Dec 19 00:12:46 2018
In reply to: 14365
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Author: |
gautam |
Type: |
Update |
Category: |
OMC |
Subject: |
40m OMC DCC node |
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I made a node to collect drawings/schematics for the 40m OMC, added the length drive for now. We should collect other stuff (TT drivers, AA/AI, mechanical drawings etc) there as well for easy reference.
Some numbers FTR:
- OMC length PZT capacitance was measured to be 209 nF.
- Series resistance in HV path of OMC lenght PZT driver is 10 kohms, so this creates a LP with corner 1/2/pi/10kohm/200nF ~80 Hz.
- Per Rob's thesis, the length PZT has DC actuation coefficient of 8.3 nm/V, ∼ 2 µm range.
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