LIGO Document T1000179-v17

aLIGO Hartmann Sensor Optical Solution descriptions (H1, L1) Input Test Masses [see T1100463 and T1100471 for coordinate sources]

Document #:
Document type:
T - Technical notes
Other Versions:
14 Dec 2018, 11:42
15 Aug 2018, 15:53
04 Apr 2017, 08:29
31 Aug 2016, 14:03
The purpose of this document is to record the mode-matching/imaging and optical layout solutions for the aLIGO Hartmann Wavefront Sensor (HWS) probe beams.

Each solution meets the following requirements:
1. Image the limiting aperture of the optical system (a baffle by the beam splitter) onto the Hartmann sensor
2. Provide a magnification of approximately 1/17.5x from the between the image plane and the Hartmann sensor.
3. Yield a roughly collimated beam at the Hartmann sensor

HWS Optical layout vertex
Notes and Changes:
- changed HWSY in L1 and H1 to correct for a sign error in SR2 in the optical solution calculation. This update reflects those changes.

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