The choice of the main beam diagnostic elements at the LNS has to take into account the future in... more The choice of the main beam diagnostic elements at the LNS has to take into account the future installation of the Milan Superconducting Cyclotron and its matching to the MP tandem in Catania. A diagnostic box, consisting of a home-made beam profile monitor, a pair of slits and a Faraday cup, has been designed according to these particular requirements. The main features of these diagnostic elements and preliminary results are described.
For an assembled structure (module, tank) of a Linac, the single cells, when coupled, loose their... more For an assembled structure (module, tank) of a Linac, the single cells, when coupled, loose their individuality and in cooperation contribute to the generation of the structure modes (resonant frequencies) F m . On the other end these modes are the only measurable quantities. The system of the coupled cells can be modelled, in a narrow frequency band, as a lumped constant circuit. The modes are solution of an equation obtained equating to zero the determinant relevant to the lumped circuit representation. This is an algebraic equation of the same order as the number N of cells. A plausible question can be posed: is it possible from a manipulation of the measurable quantities (F m ) to draw the lumped circuit parameters, namely coupling constants and single cell resonant frequencies? The answer is positive if a certain degree of symmetry is satisfied. The coefficients of above mentioned equation can be easily related to the measured modes F m . By varying, by means of tuners, the tune of a single cell of a small unknown amount, any couple of equation coefficient moves on a straight line. Therefore, we have N(N-1)/2 known straight line coefficients which may give the unknowns with extremely high accuracy.
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1996
A heavy ion facility is now available at Laboratorio Nazionale de1 Sud (LNS) of Catania. It can d... more A heavy ion facility is now available at Laboratorio Nazionale de1 Sud (LNS) of Catania. It can deliver beams with an energy up to 100 MeV/amu. The facility is based on a 15 MV HVEC tandem and a K = 800 superconducting cyclotron as booster. During the last year, the facility came into operation. A 58Ni beam delivered by the tandem has been radially injected in the SC and then has been accelerated and extracted at 30 MeV/amu. In this paper the status of the facility together with the experience gained during the commissioning will be extensively reported.
The choice of the main beam diagnostic elements at the LNS has to take into account the future in... more The choice of the main beam diagnostic elements at the LNS has to take into account the future installation of the Milan Superconducting Cyclotron and its matching to the MP tandem in Catania. A diagnostic box, consisting of a home-made beam profile monitor, a pair of slits and a Faraday cup, has been designed according to these particular requirements. The main features of these diagnostic elements and preliminary results are described.
For an assembled structure (module, tank) of a Linac, the single cells, when coupled, loose their... more For an assembled structure (module, tank) of a Linac, the single cells, when coupled, loose their individuality and in cooperation contribute to the generation of the structure modes (resonant frequencies) F m . On the other end these modes are the only measurable quantities. The system of the coupled cells can be modelled, in a narrow frequency band, as a lumped constant circuit. The modes are solution of an equation obtained equating to zero the determinant relevant to the lumped circuit representation. This is an algebraic equation of the same order as the number N of cells. A plausible question can be posed: is it possible from a manipulation of the measurable quantities (F m ) to draw the lumped circuit parameters, namely coupling constants and single cell resonant frequencies? The answer is positive if a certain degree of symmetry is satisfied. The coefficients of above mentioned equation can be easily related to the measured modes F m . By varying, by means of tuners, the tune of a single cell of a small unknown amount, any couple of equation coefficient moves on a straight line. Therefore, we have N(N-1)/2 known straight line coefficients which may give the unknowns with extremely high accuracy.
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1996
A heavy ion facility is now available at Laboratorio Nazionale de1 Sud (LNS) of Catania. It can d... more A heavy ion facility is now available at Laboratorio Nazionale de1 Sud (LNS) of Catania. It can deliver beams with an energy up to 100 MeV/amu. The facility is based on a 15 MV HVEC tandem and a K = 800 superconducting cyclotron as booster. During the last year, the facility came into operation. A 58Ni beam delivered by the tandem has been radially injected in the SC and then has been accelerated and extracted at 30 MeV/amu. In this paper the status of the facility together with the experience gained during the commissioning will be extensively reported.
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