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Laser: energy calibration

https://confluence.slac.stanford.edu/plugins/servlet/mobile?contentId=376441349#content/view/376441349

December 2022: issues with aligning the incoming laser

...

  • We lost PB_FAR as alignment reference
  • The incoming beam had the wrong angle

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Laser profile on M1Laser profile on M2

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M1/M2 alignment on front view