CALIBRATION ERRORS IN THE CAVITY BEAM POSITION MONITOR SYSTEM AT THE ATF2

It has been shown at the Accelerator Test Facility at KEK, that it is possible to run a system of 37 cavity beam position monitors (BPMs) and achieve high working resolution. However, stability of the calibration constants (position scale and radio frequency (RF) phase) over a three/four week runnin...

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Detalles Bibliográficos
Autores principales: Cullinan, F, Boogert, S T, Joshi, N, Lyapin, A
Formato: info:eu-repo/semantics/article
Lenguaje:eng
Publicado: 2011
Materias:
Accelerators and Storage Rings
9: Technology for normal conducting higher energy linear accelerators
Acceso en línea:http://cds.cern.ch/record/1403143
Descripción
Sumario:It has been shown at the Accelerator Test Facility at KEK, that it is possible to run a system of 37 cavity beam position monitors (BPMs) and achieve high working resolution. However, stability of the calibration constants (position scale and radio frequency (RF) phase) over a three/four week running period is yet to be demonstrated. During the calibration procedure, random beam jitter gives rise to a statistical error in the position scale and slow orbit drift in position and tilt causes systematic errors in both the position scale and RF phase. These errors are dominant and have been evaluated for each BPM. The results are compared with the errors expected after a tested method of beam jitter subtraction has been applied.

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