Reports until 15:56, Friday 16 May 2014
H1 AOS (INS, SUS)
jason.oberling@LIGO.ORG - posted 15:56, Friday 16 May 2014 - last comment - 16:27, Friday 16 May 2014(11944)
SRM Surrogate Rough Alignment Complete
IAS: J. Oberling
SUS: J. Bartlett, A. Ramirez
 
After much fussing and fighting the rough pitch/yaw alignment of the SRM-s is complete.  Yaw was a fairly straightforward affair, but pitch fought us for most of the day.  I'll let Jeff post the details, but essentially we didn't have enough adjustment on the slider to bring the return beam back to the total station; mass had to be moved around on the suspension to get within range.  This was definitely non-trivial.  Jeff will start transfer functions to make sure we are not rubbing and if this is the case I will start setting up for fine pitch/yaw alignment on Monday morning.
Comments related to this report
jeffrey.bartlett@LIGO.ORG - 16:27, Friday 16 May 2014 (11945)
Link 

   As Jason said, we ran out of adjustment range on the Top Mass Pitch Slider and there is no pitch adjustment slider at the Intermediate level. To correct the pitch we (1) put the Top Mass Pitch Slider back into its neutral position, (2) Removed the left, right, and T1 BOSEMs (they can interfere with pitch), and (3) made several rounds of moving addable masses from front to back and back to front to dial in the pitch. Once we were close to the correct pitch alignment by shifting addable mass at the Intermediate Mass level, we made the final fine adjustments using the Top Mass Pitch Slider. 

   We reinstalled and aligned the BOSEMs. Transfer functions are running overnight. If these look good, we will be ready for fine tuning on Monday.