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Entry  Fri Nov 12 00:42:11 2010, rana, koji, Update, IOO, MC alignment 
    Reply  Fri Nov 12 06:10:24 2010, yuta, Update, IOO, MC aligned (without coil balancing) MCalignCALIB.png
Message ID: 3903     Entry time: Fri Nov 12 00:42:11 2010     Reply to this: 3905
Author: rana, koji 
Type: Update 
Category: IOO 
Subject: MC alignment 

We decided to ignore the computer script outputs for the beam positions and use instead the eyeball method to get the beam into the MC:

  1. Adjust PSL launch beam to get the beam centered on IM1.
  2. Eyeball the beam to hit the center of MC1. We can get this pretty good by using the brackets to get the vertical and using the centering of the input/refl beams to center it horizontally.
  3. Use MC3 suspension to hit the center of MC2. We did this by hitting each of the 3 EQ stop screw heads and triangulating the MC3 bias settings.
  4. Use MC2 bias to hit the center of MC1.
  5. Use MC1 to get good flashes.
  6. Use all 3 MC sus biases to maximize the transmitted light and minimize the REFL DC.

With this rough alignment in place, we leave it to Yuta to finish the coil balancing and the A2L. We will have an aligned MC in the morning and will start the BS chamber alignment.

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