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← Revision 14 as of 2012-01-03 23:02:37 ⇥
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| ||attachment:green.png '''complete'''|| attachment:orange.png '''intermediate state ''' || attachment:red.png '''nothing happened''' || attachment:black.png gave up|| | ||{{attachment:green.png}} '''complete'''|| {{attachment:orange.png}} '''intermediate state ''' || {{attachment:red.png}} '''nothing happened''' || {{attachment:black.png}} gave up|| |
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| . attachment:green.png final alignment . attachment:green.png fix a clipped beam |
. {{attachment:green.png}} final alignment . {{attachment:green.png}} fix a clipped beam |
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| . attachment:green.png check the fiber . attachment:green.png preparation for the 1064nm beat note . attachment:orange.png find out the cause of a 20dB missing factor in the beat note detection |
. {{attachment:green.png}} check the fiber . {{attachment:green.png}} preparation for the 1064nm beat note . {{attachment:orange.png}} find out the cause of a 20dB missing factor in the beat note detection |
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| . attachment:green.png noise characterization of the RFPD . attachment:green.png VCO check . attachment:orange.png noise characterization of the VCO . attachment:red.png preparation for power line for the PFPDs and VCOs |
. {{attachment:green.png}} noise characterization of the RFPD . {{attachment:green.png}} VCO check . {{attachment:orange.png}} noise characterization of the VCO . {{attachment:red.png}} preparation for power line for the PFPDs and VCOs |
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| . attachment:green.png prepare the front end machine {{{ c1iscex }}} . attachment:green.png run the realtime code on a Gentoo . attachment:green.png RFM . attachment:green.png recheck the ADCs . attachment:green.png digitally slow feedback to the laser temperature |
. {{attachment:green.png}} prepare the front end machine {{{ c1iscex }}} . {{attachment:green.png}} run the realtime code on a Gentoo . {{attachment:green.png}} RFM . {{attachment:green.png}} recheck the ADCs . {{attachment:green.png}} digitally slow feedback to the laser temperature |
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| . attachment:green.png power budget . attachment:orange.png re-check the mode matching of the beam going to the cavity . attachment:orange.png renew some old diagrams |
. {{attachment:green.png}} power budget . {{attachment:orange.png}} re-check the mode matching of the beam going to the cavity . {{attachment:orange.png}} renew some old diagrams |
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goals in this month
- Do something by using green beat note
- Prepare digital systems
to do list
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gave up
in-vac work
final alignment - fix a clipped beam
optics
- check the fiber
- preparation for the 1064nm beat note
find out the cause of a 20dB missing factor in the beat note detection
work on some electronics
- noise characterization of the RFPD
- VCO check
- noise characterization of the VCO
preparation for power line for the PFPDs and VCOs
digital system
- prepare the front end machine c1iscex
- run the realtime code on a Gentoo
- RFM
- recheck the ADCs
- digitally slow feedback to the laser temperature
misc.
- power budget
- re-check the mode matching of the beam going to the cavity
- 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