[Keiko, Terri]
Using the wyncam, beam profile measurements of the laser at TMSY were taken and fitted using a la mode. The distance (z) was taken from RBS1. The Gouy phase was then plotted and the RQPD1 and RQPD2 were placed at -45 and +45 degrees respectively.
I'm suspecting if this fitting was correct. Let's discuss this further.
Sorry, it was my misunderstanding. The fitting result is good and the QPD positions are good!
Around 55cm (22 holes) the beam started to show an extra peak which was being used in the wyncam software to give the diameter. The size of beam can be seen to be unreliable from this distance (see k22479 attached txt file). Images of the beam at 7.5cm (3 holes) and 22cm are attached to k22479 for comparison. For this reason only the x values were used to find the waist. RLNS1 is labelled as dirty (see attached) and visibly has a lot of marks. This could be responsible for the extra peak.
The beam waist was calculated to be 195um wide (radius) at 75.08cm. Again using the wyncam, the beam was checked at this distance and the diameter was given as ~500um. The image of the fit shows it is slightly smaller than the measured values, and moving the wyncam around this area agrees that it is a waist.
The layout has been updated on JGW-T1808962-v12 and is attached here.
