BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//CERN//INDICO//EN
BEGIN:VEVENT
SUMMARY:Investigation of the possibility of using turn-by-turn measurement
 s to detect perturbations in the magnetic structure of accelerators
DTSTART;VALUE=DATE-TIME:20230912T100000Z
DTEND;VALUE=DATE-TIME:20230912T100100Z
DTSTAMP;VALUE=DATE-TIME:20260610T153704Z
UID:indico-contribution-2623@indico.inp.nsk.su
DESCRIPTION:Speakers: Daria Dorokhova ()\nThe PCA correction method consis
 ts of a global analysis of turn-by-turn data obtained from beam position m
 onitors (BPMs). One of its main advantages is speed of operation and the a
 bility to detect pulsating power supplies. Along with this\, a wide range 
 of applications characterizes the PCA method: determination of perturbatio
 ns of the accelerator magnetic structure\, calculation of transport matrix
  elements and optical functions\, and determination of the magnitude of th
 e transverse coupling. A software prototype implementing the proposed corr
 ection method was written and tested on the electron-positron collider VEP
 P-4M for experimental validation.\nIn the experiments\, perturbations were
  introduced one by one into individual elements of the skew-quadrupole and
  quadrupole corrections. In one case\, the excitation of betatron oscillat
 ions was carried out by the kick of the inflector. In another case\, the o
 scillations were excited by resonant swing with a depolariser. It was foun
 d that\, despite the simplicity of practical implementation\, the examined
  method has some nuances that make it difficult to obtain and identify cor
 rect results. Nevertheless\, it was possible to identify the introduced pe
 rturbations of quadrupole and skew-quadrupole corrections. Moreover\, it w
 as possible to detect a magnet with low-frequency pulsations by characteri
 stic changes in the estimated invariants. In addition\, the possibility of
  determining the integral coupling parameters in experiments on the observ
 ation of resonantly excited eigen modes having the shape of ellipses in th
 e plane transverse to the beam motion axis is considered.\n\nhttps://indic
 o.inp.nsk.su/event/114/contributions/2623/
LOCATION:
URL:https://indico.inp.nsk.su/event/114/contributions/2623/
END:VEVENT
END:VCALENDAR