Search

Your search keyword '"Zandolin, S."' showing total 26 results
Start Over Author "Zandolin, S."
26 results on '"Zandolin, S."'

2. Surface treatment of HV electrodes for superconducting cyclotron beam extraction

Author

Cuttone, G., Marchetta, C., Torrisi, L., Della Mea, G., Quaranta, A., Rigato, V., and Zandolin, S.

Subjects
Cyclotron -- Equipment and supplies, Electrodes -- Design and construction, Business, Electronics, Electronics and electrical industries
Abstract

At the Istituto Nazionale di Fisica Nucleare Laboratorio Nazionale del Sud of Catania, a K = 800 superconducting cyclotron is in operation since 1994. The accelerator beam extraction is accomplished using electrostatic deflectors constituted by HV electrodes generating electric fields to 140 kV/cm in 6 to 8 mm gaps. The electrostatic performance is strongly dependent on the presence of high magnetic fields (up to 5 T) and of high ion energy and intensity of heavy ion beams. The behavior of these systems is mainly determined by the field electron emission effects on the cathode surface, by electron focalization processes due to the magnetic field and by heating effects due to the ion beams. A detailed study of these effects is under development starting with point, the characterization of the electrode surface vs. the material used (Ti, Cu, stainless steel, etc.) and of the best mechanical and chemical treatment available. Moreover, we are studying the electrostatic performance by using titanium surfaces and nitriding over a wide temperature range (300 to 800 [degrees] C). Preliminary results concerning the use of thermal processed polished surfaces are presented and discussed.

Published
1997

5. Plasma wall interaction and energy fluxes in RFX

Author

Antoni, V, Bagatin, M, Bergsaker, H, Dellamea, G, Desideri, D, Martines, E, Rigato, V, Serianni, G, Sonato, P, Tramontin, L, Zandolin, S, ANTONI V, BAGATIN M, BERGSAKER H, DELLAMEA G, DESIDERI D, MARTINES E, RIGATO V, SERIANNI G, SONATO P, TRAMONTIN L, ZANDOLIN S, Antoni, V, Bagatin, M, Bergsaker, H, Dellamea, G, Desideri, D, Martines, E, Rigato, V, Serianni, G, Sonato, P, Tramontin, L, Zandolin, S, ANTONI V, BAGATIN M, BERGSAKER H, DELLAMEA G, DESIDERI D, MARTINES E, RIGATO V, SERIANNI G, SONATO P, TRAMONTIN L, and ZANDOLIN S

Abstract

The graphite first wall of the Reversed Field Pinch (RFP) experiment RFX has been inspected after one year of operation. Arc tracks and thermal erosion have been observed in particular around the two poloidal gaps of the shell. The ionization lengths calculated from the experimental edge profiles of electron temperature and density show that most of the carbon atoms released by thermal erosion, arcing and Radiation Enhanced Sublimation (RES) are locally redeposited, whereas physical sputtering, including self sputtering, results as the most important source of carbon impurity. © 1995, All rights reserved.

Published
1995

6. Probe measurements on drift patterns in RFP edge plasmas

Author

Bergsåker, H, Antoni, V, Desideri, D, Gudowska, I, Martines, E, Möller, A, Rigato, V, Serianni, G, Tramontin, L, Zandolin, S, Bergsåker H, Antoni V, Desideri D, Gudowska I, Martines E, Möller A, Rigato V, Serianni G, Tramontin L, Zandolin S, Bergsåker, H, Antoni, V, Desideri, D, Gudowska, I, Martines, E, Möller, A, Rigato, V, Serianni, G, Tramontin, L, Zandolin, S, Bergsåker H, Antoni V, Desideri D, Gudowska I, Martines E, Möller A, Rigato V, Serianni G, Tramontin L, and Zandolin S

Published
1994

7. Probe measurements on drift patterns in RFP edge plasmas

Author

Bergsaker, H., Antoni, V., Desideri, Daniele, Gudowska, I., Martines, E., Moller, A., Rigato, V., Serianni, G., Tramontin, L., Zandolin, S., Bergsåker, H, Antoni, V, Desideri, D, Gudowska, I, Martines, E, Möller, A, Rigato, V, Serianni, G, Tramontin, L, and Zandolin, S

Subjects
plasma drift, T1, RFP, reversed field pinch, RFX
Published
1994

10. Niobium sputter-coated QWRs

Author

Stark, S, Palmieri, V, Badan, L, Durand, C, Kulik, I I, Preciso, R, Stivanello, F, Venturini, W, and Zandolin, S

Subjects
Accelerators and Storage Rings
Published
1998

19. Boronization with trimethylboron in the reversed field pinch RFX

Author

Sonato, P., primary, Antoni, V., additional, Baker, W.R., additional, Bertoncello, R., additional, Buffa, A., additional, Carraro, L., additional, Costa, S., additional, Della Mea, G., additional, Marrelli, L., additional, Murari, A., additional, Puiatti, M.E., additional, Rigato, V., additional, Scarin, P., additional, Tramontin, L., additional, Valisa, M., additional, and Zandolin, S., additional

Published
1996
Full Text
View/download PDF

20. Plasma wall interaction and energy fluxes in RFX

Author

Antoni, V., primary, Bagatin, M., additional, Bergsåker, H., additional, Della Mea, G., additional, Desideri, D., additional, Martines, E., additional, Rigato, V., additional, Serianni, G., additional, Sonato, P., additional, Tramontin, L., additional, and Zandolin, S., additional

Published
1995
Full Text
View/download PDF

24. Performance of a GaAs electron source

Author

Calabrese, R., primary, Ciullo, G., additional, Della Mea, G., additional, Egeni, G.P., additional, Guidi, V., additional, Lamanna, G., additional, Lenisa, P., additional, Maciga, B., additional, Rigato, V., additional, Rudello, V., additional, Tecchio, L., additional, Yang, B., additional, and Zandolin, S., additional

Published
1994
Full Text
View/download PDF

26. Plasma wall interaction and energy fluxes in RFX

Author

L. Tramontin, V. Antoni, G. Della Mea, Gianluigi Serianni, H. Bergsåker, Mario Bagatin, S. Zandolin, Emilio Martines, Daniele Desideri, V. Rigato, Piergiorgio Sonato, Antoni, V, Bagatin, M, Bergsaker, H, Dellamea, G, Desideri, D, Martines, E, Rigato, V, Serianni, G, Sonato, P, Tramontin, L, and Zandolin, S

Subjects
Nuclear and High Energy Physics, Reversed field pinch, Chemistry, Plasma, reversed field pinch, Fusion power, Nuclear physics, Electric arc, Nuclear Energy and Engineering, Sputtering, Ionization, RFP, Electron temperature, General Materials Science, Sublimation (phase transition), Atomic physics, plasma-wall interaction, RFX
Abstract

The graphite first wall of the Reversed Field Pinch (RFP) experiment RFX has been inspected after one year of operation. Arc tracks and thermal erosion have been observed in particular around the two poloidal gaps of the shell. The ionization lengths calculated from the experimental edge profiles of electron temperature and density show that most of the carbon atoms released by thermal erosion, arcing and Radiation Enhanced Sublimation (RES) are locally redeposited, whereas physical sputtering, including self sputtering, results as the most important source of carbon impurity. © 1995, All rights reserved.

Published
1995

Catalog

Books, media, physical & digital resources
See catalog results