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| Deletions are marked like this. | Additions are marked like this. |
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| . attachment:green.png align the beam axis at the end station . attachment:green.png open the heavy doors . attachment:green.png take the access connector out . attachment:green.png install the last periscope and steering mirrors . attachment:orange.png final alignment including 1064 optics |
. attachment:orange.png final alignment . attachment:red.png fix a clipped beam [[BR]] . ''' optics ''' . attachment:orange.png check the fiber . attachment:red.png preparation for the 1064nm beat note |
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| . ''' work at the PSL table ''' . attachment:green.png put a 90/10 beam splitter after the PMC . attachment:green.png rearrange the doubling crystal . attachment:green.png mode match to the doubling crystal --> '' it has s-polarization '' . attachment:green.png check the polarization of the crystal . attachment:green.png make the hole wider on the wall of the PSL booth . attachment:green.png place Hartmut's RFPD . attachment:orange.png characterization of the RFPD . attachment:green.png find beat note by sweeping the end laser's temperature |
. ''' work on some electronics ''' . attachment:red.png noise characterization of the RFPD . attachment:orange.png figure out 20dB missing factor in the beat note detection . attachment:orange.png VCO check . attachment:red.png noise characterization of the VCO |
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| . attachment:green.png re-check the items | . attachment:orange.png power budget |
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| . attachment:green.png have a prediction what we will see at the vertex . attachment:orange.png make the wiki page better and more user friendly |
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== How to add an offset to the PLL == . ''' How to do it ? ''' . How many channels ? . ''' What kind of digital control do we need ? ''' . Using epics slow channels ? . Using a realtime control ? . ''' What kind of analog circuit do we need ? ''' . Anti Aliasing ? . Dewhitening ? == Noise requirements for pre-arm stabilization == . ''' what is the actuation coefficient ''' of the ETM OSEMs . ''' Noise budget ''' |
goals in this month
Do something by using green beat note
Prepare digital systems
to do list
attachment:green.png complete |
attachment:orange.png intermediate state |
attachment:red.png nothing happened |
attachment:black.png gave up |
in-vac work
- attachment:orange.png final alignment
- attachment:red.png fix a clipped beam
optics
- attachment:orange.png check the fiber
- attachment:red.png preparation for the 1064nm beat note
work on some electronics
- attachment:red.png noise characterization of the RFPD
- attachment:orange.png figure out 20dB missing factor in the beat note detection
- attachment:orange.png VCO check
- attachment:red.png noise characterization of the VCO
digital system
attachment:orange.png prepare the front end machine c1iscex
- attachment:green.png make a simulated plant
- attachment:red.png run the realtime code on a Gentoo
- attachment:orange.png RFM
- attachment:red.png recheck the ADCs
- attachment:red.png digitally slow feedback to the laser temperature
misc.
- attachment:orange.png power budget
- attachment:red.png re-check the mode matching of the beam going to the cavity
- attachment:red.png renew some old diagrams
considerations
How to add an offset to the PLL
How to do it ?
- How many channels ?
What kind of digital control do we need ?
- Using epics slow channels ?
- Using a realtime control ?
What kind of analog circuit do we need ?
- Anti Aliasing ?
- Dewhitening ?
Noise requirements for pre-arm stabilization
what is the actuation coefficient of the ETM OSEMs
Noise budget