IPAC2017 - List of Authors (Calanna, A.)

Paper	Title	Page
WEPVA053	New Extraction Line for the Lns Cyclotron	3378
	L. Calabretta, A. Calanna, G. D'Agostino, D. Rifuggiato, A.D. Russo INFN/LNS, Catania, Italy G. D'Agostino Universita Degli Studi Di Catania, Catania, Italy
	The LNS Superconducting Cyclotron will be modified to allow the extraction by stripper of ion beams with power up to 10 kW. By choosing properly the position of the stripper foils and of the corrector magnetic channels, it is possible to convoy the trajectories of the selected representative ion beams across a new extraction channel. It is mandatory to design a new extraction line to transport these beams to the existing beam transport line. The extracted beams have an energy spread of about ±0.4%, so, the new extraction line has to compensate the correlation energy-position of the beam and to produce an achromatic waist of the beam at the common starting point of the existing transport lines. The main changes of the cyclotron will be briefly described and the performance and the features of the new extraction line will be presented too.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-WEPVA053
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WEPVA054	Study of The New Return Yoke for The Upgraded Superconducting Cyclotron of INFN-LNS	3381
	A. Calanna, L. Allegra, L. Calabretta, G. Costa, G. D'Agostino, G. Gallo, D. Rifuggiato, A.D. Russo INFN/LNS, Catania, Italy G. D'Agostino Universita Degli Studi Di Catania, Catania, Italy
	The LNS Superconducting Cyclotron (CS) has been working for 20 years making available a wide range of ions and energies. Its operational diagram is peculiar and many experiment are performed each year. In the near future a major upgrade is planned. This will allow to overcome the major limitation of the CS, which is the beam power limited at 100 W. In the new version of the CS, the extracted beam power will be increased up to a factor 100. This improvement will be reached adding a new extraction line dedicated to a specific set of light ions and energies extracted by stripping. The new design could affect the beam dynamics strongly. Indeed, the iron yoke penetrations don't respect the three folds symmetry of our cyclotron. This inhomogeneity produces unwanted field harmonics, which have to be reduced as much as possible to avoid beam precession or second order effects. Here the study accomplished to minimize the perturbation of the non-three fold field symmetry using the current sheet approximation (CSA) is presented, along with the state-of-art configuration of the updated cyclotron
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-WEPVA054
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

New Extraction Line for the Lns Cyclotron

3378

L. Calabretta, A. Calanna, G. D'Agostino, D. Rifuggiato, A.D. Russo
INFN/LNS, Catania, Italy
G. D'Agostino
Universita Degli Studi Di Catania, Catania, Italy

The LNS Superconducting Cyclotron will be modified to allow the extraction by stripper of ion beams with power up to 10 kW. By choosing properly the position of the stripper foils and of the corrector magnetic channels, it is possible to convoy the trajectories of the selected representative ion beams across a new extraction channel. It is mandatory to design a new extraction line to transport these beams to the existing beam transport line. The extracted beams have an energy spread of about ±0.4%, so, the new extraction line has to compensate the correlation energy-position of the beam and to produce an achromatic waist of the beam at the common starting point of the existing transport lines. The main changes of the cyclotron will be briefly described and the performance and the features of the new extraction line will be presented too.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-WEPVA053

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPVA054

Study of The New Return Yoke for The Upgraded Superconducting Cyclotron of INFN-LNS

3381

A. Calanna, L. Allegra, L. Calabretta, G. Costa, G. D'Agostino, G. Gallo, D. Rifuggiato, A.D. Russo
INFN/LNS, Catania, Italy
G. D'Agostino
Universita Degli Studi Di Catania, Catania, Italy

The LNS Superconducting Cyclotron (CS) has been working for 20 years making available a wide range of ions and energies. Its operational diagram is peculiar and many experiment are performed each year. In the near future a major upgrade is planned. This will allow to overcome the major limitation of the CS, which is the beam power limited at 100 W. In the new version of the CS, the extracted beam power will be increased up to a factor 100. This improvement will be reached adding a new extraction line dedicated to a specific set of light ions and energies extracted by stripping. The new design could affect the beam dynamics strongly. Indeed, the iron yoke penetrations don't respect the three folds symmetry of our cyclotron. This inhomogeneity produces unwanted field harmonics, which have to be reduced as much as possible to avoid beam precession or second order effects. Here the study accomplished to minimize the perturbation of the non-three fold field symmetry using the current sheet approximation (CSA) is presented, along with the state-of-art configuration of the updated cyclotron

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-WEPVA054

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)