AdV-COM (AdV commissioning (1st part) )swinkels, martynov, hoak, ruggi - 0:59 Saturday 27 May 2017 (37765)
Print this reportComment to noise investigations -- first shot at beam jitter coupling (37762)Attached some more plots related to the alpha tuning: Fig 1, 2 and 3 show the longitudinal noise budget before tuning, after tuning and after increasing the roll-off of PRCL. Implementing a subtraction of PRCL noise should be done soon. Fig 4 shows that we reached a surpression close to a factor 100, but the coherence gets so low that the estimate might not be accurate. Fig 5 shows the difference between the online suppresion (as visible in the disappearing bump around 25 Hz) and the suppression in Hrec.
