Differences between revisions 2 and 23 (spanning 21 versions)

goals in this month

- get a green beam coming from the chamber to the PSL table
- do a science at the PSL table
- develop a simlink model for simulated plant

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: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

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

digital system
- attachment:orange.png prepare the front end machine c1iscex
- attachment:green.png make a simulated plant
- attachment:orange.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

misc.
- attachment:green.png re-check the items
- attachment:orange.png re-check the mode matching of the beam going to the cavity
- 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
- attachment:red.png renew some old diagrams
- attachment:green.png buy DC blocks from mini circuit

considerations

what is the polarization of the doubling crystal

The one sitting on the PSL table has S-polarization apparently. Since the beam coming from PMC is P-polarizing we had to put a lamda/2 wave plate.

Advanced_Techniques/Green_Locking/October_2010 (last edited 2012-01-03 23:02:40 by localhost)

-  ⇤ ← Revision 2 as of 2010-10-05 23:04:47 → 
  Size: 218
  Editor: KiwamuIzumi
  Comment:
+   ← Revision 23 as of 2011-09-23 05:35:55 → ⇥
  Size: 2458
  Editor: KiwamuIzumi
  Comment: This page was moved under advanced technique
-Deletions are marked like this.
+Additions are marked like this.
 Line 1:
+## page was renamed from Upgrade 09/GreenLock/October 2010
= goals in this month =

 . '''''  - get a green beam coming from the chamber to the PSL table '''''

 . '''''  - do a science at the PSL table '''''

 . ''''' - develop a simlink model for simulated plant '''''

[[BR]]
-Line 6:
+Line 16:
+ . ''' in-vac work '''
   . 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

[[BR]] 
 . ''' 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


[[BR]]
 . ''' digital system'''
   . attachment:orange.png prepare the front end machine {{{ c1iscex }}}
   . attachment:green.png make a simulated plant
   . attachment:orange.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

[[BR]]
 . ''' misc. '''
    . attachment:green.png re-check the items
    . attachment:orange.png re-check the mode matching of the beam going to the cavity
    . 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
    . attachment:red.png renew some old diagrams
    . attachment:green.png buy DC blocks from mini circuit

[[BR]]
-Line 8:
+Line 56:
+== what is the polarization of the doubling crystal ==
The one sitting on the PSL table has S-polarization apparently.
Since the beam coming from PMC is P-polarizing we had to put a lamda/2 wave plate.