In order to have efficient particle acceleration it is fundamental that the particles experience, in the accelerating gap, field amplitudes as uniform and as high as possible from gap to gap. Because of the unavoidable fabrication errors, an accelerating structure, when assembled, exhibits field values lower than the nominal ones and/or not uniform. All the usual procedures developed in order to adjust the parameter deviations responsible of the malfunctioning of these structures, are based on field amplitude measurements, by using the bead pull technique, which is a very invasive technique. In this paper the philosophy is reversed: it is assumed that all the information can be got by Sounding the Modes of the whole System (SMS) and correct the deviation of each frequency mode from its nominal value by means of an appropriate tuning of the cavities: resorting to a perturbative technique applied to a circuit model representing this kind of structures, it is possible to calculate the amount of tuning to give to the cavities. It will be shown that a very good equalization and maximization of the fields in the cavities can be achieved by using this technique.
A new tuning method for resonant coupling structures / V.G. Vaccaro, R. Buiano, A. D'Elia, C. De Martinis, D. Giove,M. Mauri, M.R. Masullo, D. Davino - In: 2005 IEEE Particle accelerator conference[s.l] : IEEE, 2005. - ISBN 0-7803-8859-3. - pp. 973-975 (( convegno Particle Accelerator Conference tenutosi a Knoxville, USA nel 2005.
|Titolo:||A new tuning method for resonant coupling structures|
|Parole Chiave:||linac ; acceleratori lineari ; metodi di tuning ; acceleratori per adroterapia|
|Settore Scientifico Disciplinare:||Settore ING-INF/01 - Elettronica|
|Data di pubblicazione:||2005|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1109/PAC.2005.1590629|
|Tipologia:||Book Part (author)|
|Appare nelle tipologie:||03 - Contributo in volume|