Overview of the RFX-mod fusion science activity

This paper reports the main recent results of the RFX-mod fusion science activity. The RFX-mod device is characterized by a unique flexibility in terms of accessible magnetic configurations. Axisymmetric and helically shaped reversed-field pinch equilibria have been studied, along with tokamak plasmas in a wide range of q(a) regimes (spanning from 4 down to 1.2 values). The full range of magnetic configurations in between the two, the so-called ultra-low q ones, has been explored, with the aim of studying specific physical issues common to all equilibria, such as, for example, the density limit phenomenon. The powerful RFX-mod feedback control system has been exploited for MHD control, which allowed us to extend the range of experimental parameters, as well as to induce specific magnetic perturbations for the study of 3D effects. In particular, transport, edge and isotope effects in 3D equilibria have been investigated, along with runaway mitigations through induced magnetic perturbations. The first transitions to an improved confinement scenario in circular and D-shaped tokamak plasmas have been obtained thanks to an active modification of the edge electric field through a polarized electrode. The experiments are supported by intense modeling with 3D MHD, gyrokinetic, guiding center and transport codes. Proposed modifications to the RFX-mod device, which will enable further contributions to the solution of key issues in the roadmap to ITER and DEMO, are also briefly presented.

G. Pucella | Faa Federico Felici | P. Vincenzi | G. Manduchi | G. Marchiori | A. Luchetta | C. Taliercio | Paolo Bettini | O. Tudisco | Piergiorgio Sonato | T. C. Luce | Elena Gaio | Francesco Gnesotto | R. Piovan | A. Maistrello | C. Finotti | D. K. Mansfield | Oliver Schmitz | Fabio Villone | W. A. Cooper | G. Mazzitelli | F. Belli | Andrea Rizzolo | Cristina Rea | Nicola Pilan | A. De Lorenzi | D. Cester | L. Stevanato | Fulvio Auriemma | M. Baruzzo | R. Cavazzana | Giuseppe Chitarin | G. De Masi | Paolo Innocente | L. Laguardia | O. McCormack | Simone Peruzzo | L. Piron | C. Piron | Italo Predebon | Cristian Ruset | Silvia Spagnolo | M. Valisa | O. Kudlacek | Laszlo Sajo-Bohus | G. Rostagni | M. Recchia | A. Zamengo | Chenguang Li | Piero Agostinetti | Marco Barbisan | M. Boldrin | M. Dalla Palma | A. Ferro | Luca Grando | M. Pavei | M. Siragusa | B. Zaniol | Luis Chacon | L. Carraro | N. Vianello | L. Giudicotti | Paolo Zanca | Lionello Marrelli | L. Zanotto | Yoshiro Narushima | Diego Marcuzzi | Piero Martin | M. Okabayashi | S. Dal Bello | Donald A. Spong | Nicolò Marconato | Chiara Bustreo | Roberto Paccagnella | T. Bolzonella | Emilio Martines | Gianluca Spizzo | David Terranova | J. L. Jackson | M. Valente | V. Antoni | L. Pigatto | Raul Sanchez | Marco Gobbin | A. Buffa | Alessandra Canton | R. Delogu | Paolo Franz | Satoru Kiyama | S. Martini | B. Momo | Hajime Sakakita | E. Zilli | M. Brombin | Pavlos Xanthopoulos | James D. Hanson | B. Liu | M. Bigi | Paolo Scarin | M. Vallar | J. Q. Dong | S. P. Hirshman | G. Urso | Lorenzo Frassinetti | M. Komm | D. F. Escande | Fabio Sattin | L. Cordaro | D. Lopez-Bruna | E. Spada | M. Zuin | Yueqiang Liu | F. Felici | L. Giudicotti | E. Zilli | P. Sonato | T. Luce | T. Luce | F. Felici | F. Belli | J. Hanson | S. Hirshman | R. Sánchez | O. Schmitz | L. Frassinetti | R. White | E. Gaio | R. Piovan | M. Bigi | Yueqiang Liu | R. Paccagnella | T. Bolzonella | G. Marchiori | A. Luchetta | G. Manduchi | L. Marrelli | P. Martin | G. Spizzo | P. Zanca | M. Okabayashi | F. Villone | P. Bettini | G. Masi | G. Chitarin | N. Marconato | V. Antoni | L. Chacón | Y.Q. Liu | D. Spong | P. Xanthopoulos | J. Jackson | C. Li | M. Brombin | R. Cavazzana | M. Moresco | D. Mansfield | T. Barbui | L. Carraro | M. Puiatti | O. Schmitz | W. Schneider | N. Vianello | M. Zuin | D. López-Bruna | Piero Martin | M. Agostini | S. Martini | G. Pucella | O. Tudisco | M. Valisa | F. Ghezzi | L. Sajo-Bohus | J. Sarff | P. Scarin | Y. Narushima | M. Spolaore | E. Martines | P. Innocente | A. Canton | N. Visonà | D. Terranova | F. Sattin | R. Lorenzini | P. Piovesan | D. Bonfiglio | S. Cappello | D. Escande | A. Fassina | P. Franz | M. Gobbin | F. Auriemma | M. Baruzzo | A. Buffa | A. Lorenzi | A. Ferro | F. Gnesotto | L. Grando | S. Guo | D. Marcuzzi | S. Peruzzo | L. Piron | I. Predebon | G. Rostagni | E. Spada | S. Spagnolo | C. Taliercio | B. Zaniol | L. Zanotto | B. Momo | S. D. Bello | P. Agostinetti | M. Barbisan | R. Bilel | M. Boldrin | D. Cester | M. D. Palma | S. Deambrosis | R. Delogu | J. Dong | C. Finotti | S. Kiyama | M. Komm | L. Laguardia | Chenguang Li | S. F. Liu | A. Maistrello | G. Mazzitelli | E. Miorin | N. Patel | M. Pavei | N. Pilan | L. Pigatto | C. Piron | C. Rea | M. Recchia | A. Rizzolo | C. Ruset | H. Sakakita | L. Stevanato | G. Urso | M. Valente | M. Veranda | P. Vincenzi | X. Xu | V. Yanovskiy | A. Zamengo | O. McCormack | Y. Zhang | Rita Lorenzini | Alessandro Fassina | Susanna Cappello | S. Deambrosis | F. Ghezzi | Monica Spolaore | R. B. White | Matteo Agostini | L. Cordaro | W. Schneider | R. Sánchez | C. Bustreo | Y. Suzuki | M. Moresco | S. C. Guo | W. Gonzalez | O. Kudlacek | G. De Masi | Wolf-Dieter Schneider | Nisarg Patel | P. Piovesan | M. E. Puiatti | D. Bonfiglio | M. Veranda | T. Barbui | R. Bilel | W. Gonzalez | S. F. Liu | E. Miorin | John Sarff | Y. Suzuki | N. Visona | X. Y. Xu | V. Yanovskiy | Y. Zhang | N. Marconato | M. Vallar | W. Cooper | S. Dal Bello | M. Dalla Palma | M. Siragusa | M. Agostini | J. L. Jackson | D. López Bruna | P. Bettini | B. Liu | M. Puiatti | R. White | X.Y. Xu | S. Hirshman | J. Dong | A. de Lorenzi | S.F. Liu | N. Patel | J. Hanson | L. Sajo-Bohus | L. Chacon | W. González

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